From f587f7242eb53d54c8cc0504b5abcbf52a6e58c4 Mon Sep 17 00:00:00 2001 From: Salvatore Bonaccorso Date: Fri, 5 Jan 2018 10:53:38 +0100 Subject: [PATCH] [rt] Update to 4.14.8-rt9 --- debian/changelog | 3 + ...able-base-independent-of-base-nohz_a.patch | 76 ++++++++ ...c-keys-for-migrate_enable-nohz_activ.patch | 50 ++--- ...t-trigger-Documentation-to-histogram.patch | 4 +- ...unofficial-trace_recursive_lock-patc.patch | 2 +- ...imer-Correct-blantanly-wrong-comment.patch | 7 +- ...vent-erroneous-tick-stop-invocations.patch | 53 ++++++ ...-Add-Documentation-for-log2-modifier.patch | 4 +- ...the-order-of-trace_types_lock-and-ev.patch | 2 +- ...erneldoc-for-struct-hrtimer_cpu_base.patch | 7 +- ...mer_start_debug-where-it-makes-sense.patch | 45 +++++ ...pport-to-detect-and-avoid-duplicates.patch | 4 +- ...clude-generic-fields-from-histograms.patch | 2 +- ...clock-argument-in-schedule_hrtimeout.patch | 7 +- ...ent-return-values-of-timerqueue_add-.patch | 45 +++++ 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2 +- .../all/rt/slub-enable-irqs-for-no-wait.patch | 2 +- ...pcm_stream_lock-irqs_disabled-splats.patch | 2 +- ...oftirq-disable-softirq-stacks-for-rt.patch | 2 +- .../all/rt/softirq-preempt-fix-3-re.patch | 2 +- .../features/all/rt/softirq-split-locks.patch | 2 +- ...plit-timer-softirqs-out-of-ksoftirqd.patch | 2 +- ...irq-wake-the-timer-softirq-if-needed.patch | 2 +- ...arc64-use-generic-rwsem-spinlocks-rt.patch | 2 +- .../all/rt/spinlock-types-separate-raw.patch | 2 +- ...it-call_srcu-use-under-raw-spinlocks.patch | 2 +- ...place-local_irqsave-with-a-locallock.patch | 2 +- ...-use-cpu_online-instead-custom-check.patch | 2 +- .../all/rt/stop-machine-raw-lock.patch | 2 +- ...nvert-stop_machine_run-to-PREEMPT_RT.patch | 2 +- ...vc_xprt_do_enqueue-use-get_cpu_light.patch | 2 +- .../suspend-prevernt-might-sleep-splats.patch | 2 +- .../all/rt/sysfs-realtime-entry.patch | 2 +- ...-from-going-into-infinite-spin-in-rt.patch | 2 +- ...rmal-Defer-thermal-wakups-to-threads.patch | 2 +- ...id-schedule_work-with-interrupts-dis.patch | 2 +- .../rt/timekeeping-split-jiffies-lock.patch | 2 +- ...-waking-softirqs-from-the-jiffy-tick.patch | 2 +- .../all/rt/timer-fd-avoid-live-lock.patch | 2 +- .../timers-prepare-for-full-preemption.patch | 2 +- .../tpm_tis-fix-stall-after-iowrite-s.patch | 2 +- ...-for-preempt-off-in-preempt_schedule.patch | 2 +- ...ish-Enable-earlycon-only-if-built-in.patch | 2 +- ...0-don-t-take-the-trylock-during-oops.patch | 2 +- ...ove-preemption-disabling-in-netif_rx.patch | 2 +- .../all/rt/usb-use-_nort-in-giveback.patch | 2 +- .../all/rt/user-use-local-irq-nort.patch | 2 +- .../all/rt/wait.h-include-atomic.h.patch | 2 +- ...rk-around-irqsafe-timer-optimization.patch | 2 +- ...mple-Simple-work-queue-implemenation.patch | 2 +- .../rt/workqueue-distangle-from-rq-lock.patch | 2 +- .../rt/workqueue-prevent-deadlock-stall.patch | 2 +- .../all/rt/workqueue-use-locallock.patch | 2 +- .../features/all/rt/workqueue-use-rcu.patch | 2 +- .../rt/x86-UV-raw_spinlock-conversion.patch | 2 +- ...ypto-reduce-preempt-disabled-regions.patch | 2 +- ...highmem-add-a-already-used-pte-check.patch | 2 +- .../all/rt/x86-io-apic-migra-no-unmask.patch | 2 +- .../rt/x86-kvm-require-const-tsc-for-rt.patch | 2 +- .../all/rt/x86-mce-timer-hrtimer.patch | 2 +- ...-mce-use-swait-queue-for-mce-wakeups.patch | 2 +- .../features/all/rt/x86-preempt-lazy.patch | 2 +- ...ignal-delay-calling-signals-on-32bit.patch | 2 +- .../rt/x86-stackprot-no-random-on-rt.patch | 2 +- .../rt/x86-use-gen-rwsem-spinlocks-rt.patch | 2 +- ...9pfs-don-t-inclide-rwlock.h-directly.patch | 2 +- debian/patches/series-rt | 9 +- 387 files changed, 974 insertions(+), 830 deletions(-) create mode 100644 debian/patches/features/all/rt/0001-timer-Use-deferrable-base-independent-of-base-nohz_a.patch create mode 100644 debian/patches/features/all/rt/0002-nohz-Prevent-erroneous-tick-stop-invocations.patch create mode 100644 debian/patches/features/all/rt/0003-timer-Invoke-timer_start_debug-where-it-makes-sense.patch create mode 100644 debian/patches/features/all/rt/0004-timerqueue-Document-return-values-of-timerqueue_add-.patch diff --git a/debian/changelog b/debian/changelog index 718d5ac9c..31eeb50f8 100644 --- a/debian/changelog +++ b/debian/changelog @@ -11,6 +11,9 @@ linux (4.14.8-1) UNRELEASED; urgency=medium * [arm64] Backport patch from linux-next to support SMP on tegra210 systems. + [ Salvatore Bonaccorso ] + * [rt] Update to 4.14.8-rt9 + -- Ben Hutchings Thu, 28 Dec 2017 01:18:05 +0000 linux (4.14.7-1) unstable; urgency=medium diff --git a/debian/patches/features/all/rt/0001-timer-Use-deferrable-base-independent-of-base-nohz_a.patch b/debian/patches/features/all/rt/0001-timer-Use-deferrable-base-independent-of-base-nohz_a.patch new file mode 100644 index 000000000..b1167e785 --- /dev/null +++ b/debian/patches/features/all/rt/0001-timer-Use-deferrable-base-independent-of-base-nohz_a.patch @@ -0,0 +1,76 @@ +From: Anna-Maria Gleixner +Date: Fri, 22 Dec 2017 15:51:12 +0100 +Subject: [PATCH 1/4] timer: Use deferrable base independent of + base::nohz_active +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz + +During boot and before base::nohz_active is set in the timer bases, deferrable +timers are enqueued into the standard timer base. This works correctly as +long as base::nohz_active is false. + +Once it base::nohz_active is set and a timer which was enqueued before that +is accessed the lock selector code choses the lock of the deferred +base. This causes unlocked access to the standard base and in case the +timer is removed it does not clear the pending flag in the standard base +bitmap which causes get_next_timer_interrupt() to return bogus values. + +To prevent that, the deferrable timers must be enqueued in the deferrable +base, even when base::nohz_active is not set. Those deferrable timers also +need to be expired unconditional. + +Fixes: 500462a9de65 ("timers: Switch to a non-cascading wheel") +Signed-off-by: Anna-Maria Gleixner +Signed-off-by: Thomas Gleixner +Cc: stable@vger.kernel.org +Cc: rt@linutronix.de +Signed-off-by: Sebastian Andrzej Siewior +--- + kernel/time/timer.c | 16 +++++++--------- + 1 file changed, 7 insertions(+), 9 deletions(-) + +diff --git a/kernel/time/timer.c b/kernel/time/timer.c +index f2674a056c26..fdfaf4f3bcfa 100644 +--- a/kernel/time/timer.c ++++ b/kernel/time/timer.c +@@ -814,11 +814,10 @@ static inline struct timer_base *get_timer_cpu_base(u32 tflags, u32 cpu) + struct timer_base *base = per_cpu_ptr(&timer_bases[BASE_STD], cpu); + + /* +- * If the timer is deferrable and nohz is active then we need to use +- * the deferrable base. ++ * If the timer is deferrable and NO_HZ_COMMON is set then we need ++ * to use the deferrable base. + */ +- if (IS_ENABLED(CONFIG_NO_HZ_COMMON) && base->nohz_active && +- (tflags & TIMER_DEFERRABLE)) ++ if (IS_ENABLED(CONFIG_NO_HZ_COMMON) && (tflags & TIMER_DEFERRABLE)) + base = per_cpu_ptr(&timer_bases[BASE_DEF], cpu); + return base; + } +@@ -828,11 +827,10 @@ static inline struct timer_base *get_timer_this_cpu_base(u32 tflags) + struct timer_base *base = this_cpu_ptr(&timer_bases[BASE_STD]); + + /* +- * If the timer is deferrable and nohz is active then we need to use +- * the deferrable base. ++ * If the timer is deferrable and NO_HZ_COMMON is set then we need ++ * to use the deferrable base. + */ +- if (IS_ENABLED(CONFIG_NO_HZ_COMMON) && base->nohz_active && +- (tflags & TIMER_DEFERRABLE)) ++ if (IS_ENABLED(CONFIG_NO_HZ_COMMON) && (tflags & TIMER_DEFERRABLE)) + base = this_cpu_ptr(&timer_bases[BASE_DEF]); + return base; + } +@@ -1644,7 +1642,7 @@ static __latent_entropy void run_timer_softirq(struct softirq_action *h) + base->must_forward_clk = false; + + __run_timers(base); +- if (IS_ENABLED(CONFIG_NO_HZ_COMMON) && base->nohz_active) ++ if (IS_ENABLED(CONFIG_NO_HZ_COMMON)) + __run_timers(this_cpu_ptr(&timer_bases[BASE_DEF])); + } + +-- +2.15.1 + diff --git a/debian/patches/features/all/rt/0001-timers-Use-static-keys-for-migrate_enable-nohz_activ.patch b/debian/patches/features/all/rt/0001-timers-Use-static-keys-for-migrate_enable-nohz_activ.patch index e535dc45a..adbe09aaf 100644 --- a/debian/patches/features/all/rt/0001-timers-Use-static-keys-for-migrate_enable-nohz_activ.patch +++ b/debian/patches/features/all/rt/0001-timers-Use-static-keys-for-migrate_enable-nohz_activ.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner -Date: Thu, 23 Nov 2017 16:38:42 +0100 -Subject: [PATCH 01/36] timers: Use static keys for migrate_enable/nohz_active -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Date: Wed, 20 Dec 2017 17:12:50 +0100 +Subject: [PATCH 01/29] timers: Use static keys for migrate_enable/nohz_active +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The members migrate_enable and nohz_active in the timer/hrtimer per CPU bases have been introduced to avoid accessing global variables for these @@ -15,14 +15,15 @@ high performance networking which tends to disable the timer migration functionality. Signed-off-by: Thomas Gleixner +Signed-off-by: Anna-Maria Gleixner Signed-off-by: Sebastian Andrzej Siewior --- - include/linux/hrtimer.h | 4 - + include/linux/hrtimer.h | 4 -- kernel/time/hrtimer.c | 17 ++------ - kernel/time/tick-internal.h | 19 +++++---- - kernel/time/tick-sched.c | 2 - kernel/time/timer.c | 91 ++++++++++++++++++++++---------------------- - 5 files changed, 65 insertions(+), 68 deletions(-) + kernel/time/tick-internal.h | 19 ++++++--- + kernel/time/tick-sched.c | 2 - + kernel/time/timer.c | 85 ++++++++++++++++++++++---------------------- + 5 files changed, 62 insertions(+), 65 deletions(-) --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -224,25 +225,7 @@ Signed-off-by: Sebastian Andrzej Siewior return; /* -@@ -817,7 +829,7 @@ static inline struct timer_base *get_tim - * If the timer is deferrable and nohz is active then we need to use - * the deferrable base. - */ -- if (IS_ENABLED(CONFIG_NO_HZ_COMMON) && base->nohz_active && -+ if (is_timers_nohz_active() && - (tflags & TIMER_DEFERRABLE)) - base = per_cpu_ptr(&timer_bases[BASE_DEF], cpu); - return base; -@@ -831,7 +843,7 @@ static inline struct timer_base *get_tim - * If the timer is deferrable and nohz is active then we need to use - * the deferrable base. - */ -- if (IS_ENABLED(CONFIG_NO_HZ_COMMON) && base->nohz_active && -+ if (is_timers_nohz_active() && - (tflags & TIMER_DEFERRABLE)) - base = this_cpu_ptr(&timer_bases[BASE_DEF]); - return base; -@@ -842,21 +854,20 @@ static inline struct timer_base *get_tim +@@ -840,21 +852,20 @@ static inline struct timer_base *get_tim return get_timer_cpu_base(tflags, tflags & TIMER_CPUMASK); } @@ -270,7 +253,7 @@ Signed-off-by: Sebastian Andrzej Siewior unsigned long jnow; /* -@@ -880,16 +891,8 @@ static inline void forward_timer_base(st +@@ -878,16 +889,8 @@ static inline void forward_timer_base(st base->clk = jnow; else base->clk = base->next_expiry; @@ -288,16 +271,7 @@ Signed-off-by: Sebastian Andrzej Siewior /* -@@ -1644,7 +1647,7 @@ static __latent_entropy void run_timer_s - base->must_forward_clk = false; - - __run_timers(base); -- if (IS_ENABLED(CONFIG_NO_HZ_COMMON) && base->nohz_active) -+ if (is_timers_nohz_active()) - __run_timers(this_cpu_ptr(&timer_bases[BASE_DEF])); - } - -@@ -1658,7 +1661,7 @@ void run_local_timers(void) +@@ -1656,7 +1659,7 @@ void run_local_timers(void) hrtimer_run_queues(); /* Raise the softirq only if required. */ if (time_before(jiffies, base->clk)) { diff --git a/debian/patches/features/all/rt/0001-tracing-Move-hist-trigger-Documentation-to-histogram.patch b/debian/patches/features/all/rt/0001-tracing-Move-hist-trigger-Documentation-to-histogram.patch index 4ea07b7ad..01cde195c 100644 --- a/debian/patches/features/all/rt/0001-tracing-Move-hist-trigger-Documentation-to-histogram.patch +++ b/debian/patches/features/all/rt/0001-tracing-Move-hist-trigger-Documentation-to-histogram.patch @@ -1,8 +1,8 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:37:42 -0600 +Date: Thu, 21 Dec 2017 10:02:23 -0600 Subject: [PATCH 01/37] tracing: Move hist trigger Documentation to histogram.txt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The hist trigger Documentation takes up a large part of events.txt - since it will be getting even larger, move it to a separate file. diff --git a/debian/patches/features/all/rt/0001-tracing-Steve-s-unofficial-trace_recursive_lock-patc.patch b/debian/patches/features/all/rt/0001-tracing-Steve-s-unofficial-trace_recursive_lock-patc.patch index 065b291b5..895545212 100644 --- a/debian/patches/features/all/rt/0001-tracing-Steve-s-unofficial-trace_recursive_lock-patc.patch +++ b/debian/patches/features/all/rt/0001-tracing-Steve-s-unofficial-trace_recursive_lock-patc.patch @@ -2,7 +2,7 @@ From: Steven Rostedt Date: Fri, 22 Sep 2017 14:58:15 -0500 Subject: [PATCH 01/42] tracing: Steve's unofficial trace_recursive_lock() patch -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz On Tue, 5 Sep 2017 16:57:52 -0500 Tom Zanussi wrote: diff --git a/debian/patches/features/all/rt/0002-hrtimer-Correct-blantanly-wrong-comment.patch b/debian/patches/features/all/rt/0002-hrtimer-Correct-blantanly-wrong-comment.patch index 1a4565b24..55c9a6a14 100644 --- a/debian/patches/features/all/rt/0002-hrtimer-Correct-blantanly-wrong-comment.patch +++ b/debian/patches/features/all/rt/0002-hrtimer-Correct-blantanly-wrong-comment.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner -Date: Thu, 23 Nov 2017 16:38:43 +0100 -Subject: [PATCH 02/36] hrtimer: Correct blantanly wrong comment -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Date: Wed, 20 Dec 2017 17:12:51 +0100 +Subject: [PATCH 02/29] hrtimer: Correct blantanly wrong comment +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The protection of a hrtimer which runs its callback against migration to a different CPU has nothing to do with hard interrupt context. @@ -14,6 +14,7 @@ callback is running. Reported-by: Anna-Maria Gleixner Signed-off-by: Thomas Gleixner +Signed-off-by: Anna-Maria Gleixner Signed-off-by: Sebastian Andrzej Siewior --- kernel/time/hrtimer.c | 6 +++--- diff --git a/debian/patches/features/all/rt/0002-nohz-Prevent-erroneous-tick-stop-invocations.patch b/debian/patches/features/all/rt/0002-nohz-Prevent-erroneous-tick-stop-invocations.patch new file mode 100644 index 000000000..2be6d512c --- /dev/null +++ b/debian/patches/features/all/rt/0002-nohz-Prevent-erroneous-tick-stop-invocations.patch @@ -0,0 +1,53 @@ +From: Thomas Gleixner +Date: Fri, 22 Dec 2017 15:51:13 +0100 +Subject: [PATCH 2/4] nohz: Prevent erroneous tick stop invocations +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz + +The conditions in irq_exit() to invoke tick_nohz_irq_exit() are: + + if ((idle_cpu(cpu) && !need_resched()) || tick_nohz_full_cpu(cpu)) + +This is too permissive in various aspects: + + 1) If need_resched() is set, then the tick cannot be stopped whether + the CPU is idle or in nohz full mode. + + 2) If need_resched() is not set, but softirqs are pending then this is an + indication that the softirq code punted and delegated the execution to + softirqd. need_resched() is not true because the current interrupted + task takes precedence over softirqd. + +Invoking tick_nohz_irq_exit() in these cases can cause an endless loop of +timer interrupts because the timer wheel contains an expired timer, but +softirqs are not yet executed. So it returns an immediate expiry request, +which causes the timer to fire immediately again. Lather, rinse and +repeat.... + +Prevent that by making the conditions proper and only allow invokation when +in idle or nohz full mode and neither need_resched() nor +local_softirq_pending() are set. + +Signed-off-by: Thomas Gleixner +Cc: stable@vger.kernel.org +Signed-off-by: Sebastian Andrzej Siewior +--- + kernel/softirq.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +diff --git a/kernel/softirq.c b/kernel/softirq.c +index 4e09821f9d9e..6d260b1229a1 100644 +--- a/kernel/softirq.c ++++ b/kernel/softirq.c +@@ -381,7 +381,8 @@ static inline void tick_irq_exit(void) + int cpu = smp_processor_id(); + + /* Make sure that timer wheel updates are propagated */ +- if ((idle_cpu(cpu) && !need_resched()) || tick_nohz_full_cpu(cpu)) { ++ if ((idle_cpu(cpu) || tick_nohz_full_cpu(cpu)) && ++ !need_resched() && !local_softirq_pending()) { + if (!in_interrupt()) + tick_nohz_irq_exit(); + } +-- +2.15.1 + diff --git a/debian/patches/features/all/rt/0002-tracing-Add-Documentation-for-log2-modifier.patch b/debian/patches/features/all/rt/0002-tracing-Add-Documentation-for-log2-modifier.patch index 22b8d13d2..ecd42e2c8 100644 --- a/debian/patches/features/all/rt/0002-tracing-Add-Documentation-for-log2-modifier.patch +++ b/debian/patches/features/all/rt/0002-tracing-Add-Documentation-for-log2-modifier.patch @@ -1,7 +1,7 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:37:43 -0600 +Date: Thu, 21 Dec 2017 10:02:24 -0600 Subject: [PATCH 02/37] tracing: Add Documentation for log2 modifier -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Add a line for the log2 modifier, to keep it aligned with tracing/README. diff --git a/debian/patches/features/all/rt/0002-tracing-Reverse-the-order-of-trace_types_lock-and-ev.patch b/debian/patches/features/all/rt/0002-tracing-Reverse-the-order-of-trace_types_lock-and-ev.patch index c67fec3db..9938d238d 100644 --- a/debian/patches/features/all/rt/0002-tracing-Reverse-the-order-of-trace_types_lock-and-ev.patch +++ b/debian/patches/features/all/rt/0002-tracing-Reverse-the-order-of-trace_types_lock-and-ev.patch @@ -2,7 +2,7 @@ From: "Steven Rostedt (VMware)" Date: Fri, 22 Sep 2017 14:58:16 -0500 Subject: [PATCH 02/42] tracing: Reverse the order of trace_types_lock and event_mutex -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz In order to make future changes where we need to call tracing_set_clock() from within an event command, the order of diff --git a/debian/patches/features/all/rt/0003-hrtimer-Fix-kerneldoc-for-struct-hrtimer_cpu_base.patch b/debian/patches/features/all/rt/0003-hrtimer-Fix-kerneldoc-for-struct-hrtimer_cpu_base.patch index 9186cb294..d83e71334 100644 --- a/debian/patches/features/all/rt/0003-hrtimer-Fix-kerneldoc-for-struct-hrtimer_cpu_base.patch +++ b/debian/patches/features/all/rt/0003-hrtimer-Fix-kerneldoc-for-struct-hrtimer_cpu_base.patch @@ -1,7 +1,7 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:39:40 +0200 -Subject: [PATCH 03/36] hrtimer: Fix kerneldoc for struct hrtimer_cpu_base -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Date: Wed, 20 Dec 2017 17:12:52 +0100 +Subject: [PATCH 03/29] hrtimer: Fix kerneldoc for struct hrtimer_cpu_base +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The sequence '/**' marks the start of a struct description. Add the missing second asterisk. While at it adapt the ordering of the struct @@ -9,7 +9,6 @@ members to the struct definition and document the purpose of expires_next more precisely. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- include/linux/hrtimer.h | 8 ++++---- diff --git a/debian/patches/features/all/rt/0003-timer-Invoke-timer_start_debug-where-it-makes-sense.patch b/debian/patches/features/all/rt/0003-timer-Invoke-timer_start_debug-where-it-makes-sense.patch new file mode 100644 index 000000000..896a46d8d --- /dev/null +++ b/debian/patches/features/all/rt/0003-timer-Invoke-timer_start_debug-where-it-makes-sense.patch @@ -0,0 +1,45 @@ +From: Thomas Gleixner +Date: Fri, 22 Dec 2017 15:51:14 +0100 +Subject: [PATCH 3/4] timer: Invoke timer_start_debug() where it makes sense +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz + +The timer start debug function is called before the proper timer base is +set. As a consequence the trace data contains the stale CPU and flags +values. + +Call the debug function after setting the new base and flags. + +Fixes: 500462a9de65 ("timers: Switch to a non-cascading wheel") +Signed-off-by: Thomas Gleixner +Cc: stable@vger.kernel.org +Cc: rt@linutronix.de +Signed-off-by: Sebastian Andrzej Siewior +--- + kernel/time/timer.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +diff --git a/kernel/time/timer.c b/kernel/time/timer.c +index fdfaf4f3bcfa..a4d095e1010e 100644 +--- a/kernel/time/timer.c ++++ b/kernel/time/timer.c +@@ -982,8 +982,6 @@ __mod_timer(struct timer_list *timer, unsigned long expires, bool pending_only) + if (!ret && pending_only) + goto out_unlock; + +- debug_activate(timer, expires); +- + new_base = get_target_base(base, timer->flags); + + if (base != new_base) { +@@ -1007,6 +1005,8 @@ __mod_timer(struct timer_list *timer, unsigned long expires, bool pending_only) + } + } + ++ debug_activate(timer, expires); ++ + timer->expires = expires; + /* + * If 'idx' was calculated above and the base time did not advance +-- +2.15.1 + diff --git a/debian/patches/features/all/rt/0003-tracing-Add-support-to-detect-and-avoid-duplicates.patch b/debian/patches/features/all/rt/0003-tracing-Add-support-to-detect-and-avoid-duplicates.patch index a66d3ccf8..5bb005052 100644 --- a/debian/patches/features/all/rt/0003-tracing-Add-support-to-detect-and-avoid-duplicates.patch +++ b/debian/patches/features/all/rt/0003-tracing-Add-support-to-detect-and-avoid-duplicates.patch @@ -1,7 +1,7 @@ From: Vedang Patel -Date: Wed, 6 Dec 2017 16:37:44 -0600 +Date: Thu, 21 Dec 2017 10:02:25 -0600 Subject: [PATCH 03/37] tracing: Add support to detect and avoid duplicates -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz A duplicate in the tracing_map hash table is when 2 different entries have the same key and, as a result, the key_hash. This is possible due diff --git a/debian/patches/features/all/rt/0003-tracing-Exclude-generic-fields-from-histograms.patch b/debian/patches/features/all/rt/0003-tracing-Exclude-generic-fields-from-histograms.patch index 683996d93..40177eab0 100644 --- a/debian/patches/features/all/rt/0003-tracing-Exclude-generic-fields-from-histograms.patch +++ b/debian/patches/features/all/rt/0003-tracing-Exclude-generic-fields-from-histograms.patch @@ -1,7 +1,7 @@ From: Tom Zanussi Date: Fri, 22 Sep 2017 14:58:17 -0500 Subject: [PATCH 03/42] tracing: Exclude 'generic fields' from histograms -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz There are a small number of 'generic fields' (comm/COMM/cpu/CPU) that are found by trace_find_event_field() but are only meant for diff --git a/debian/patches/features/all/rt/0004-hrtimer-Cleanup-clock-argument-in-schedule_hrtimeout.patch b/debian/patches/features/all/rt/0004-hrtimer-Cleanup-clock-argument-in-schedule_hrtimeout.patch index c2e719866..840723ec0 100644 --- a/debian/patches/features/all/rt/0004-hrtimer-Cleanup-clock-argument-in-schedule_hrtimeout.patch +++ b/debian/patches/features/all/rt/0004-hrtimer-Cleanup-clock-argument-in-schedule_hrtimeout.patch @@ -1,8 +1,8 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:39:41 +0200 -Subject: [PATCH 04/36] hrtimer: Cleanup clock argument in +Date: Wed, 20 Dec 2017 17:12:53 +0100 +Subject: [PATCH 04/29] hrtimer: Cleanup clock argument in schedule_hrtimeout_range_clock() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz schedule_hrtimeout_range_clock() uses an integer for the clock id instead of the predefined type "clockid_t". The ID of the clock is @@ -17,7 +17,6 @@ schedule_hrtimeout_range_clock(). No functional change. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- include/linux/hrtimer.h | 2 +- diff --git a/debian/patches/features/all/rt/0004-timerqueue-Document-return-values-of-timerqueue_add-.patch b/debian/patches/features/all/rt/0004-timerqueue-Document-return-values-of-timerqueue_add-.patch new file mode 100644 index 000000000..9d7967772 --- /dev/null +++ b/debian/patches/features/all/rt/0004-timerqueue-Document-return-values-of-timerqueue_add-.patch @@ -0,0 +1,45 @@ +From: Thomas Gleixner +Date: Fri, 22 Dec 2017 15:51:15 +0100 +Subject: [PATCH 4/4] timerqueue: Document return values of + timerqueue_add/del() +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz + +The return values of timerqueue_add/del() are not documented in the kernel doc +comment. Add proper documentation. + +Signed-off-by: Thomas Gleixner +Cc: rt@linutronix.de +Signed-off-by: Sebastian Andrzej Siewior +--- + lib/timerqueue.c | 8 +++++--- + 1 file changed, 5 insertions(+), 3 deletions(-) + +diff --git a/lib/timerqueue.c b/lib/timerqueue.c +index 4a720ed4fdaf..0d54bcbc8170 100644 +--- a/lib/timerqueue.c ++++ b/lib/timerqueue.c +@@ -33,8 +33,9 @@ + * @head: head of timerqueue + * @node: timer node to be added + * +- * Adds the timer node to the timerqueue, sorted by the +- * node's expires value. ++ * Adds the timer node to the timerqueue, sorted by the node's expires ++ * value. Returns true if the newly added timer is the first expiring timer in ++ * the queue. + */ + bool timerqueue_add(struct timerqueue_head *head, struct timerqueue_node *node) + { +@@ -70,7 +71,8 @@ EXPORT_SYMBOL_GPL(timerqueue_add); + * @head: head of timerqueue + * @node: timer node to be removed + * +- * Removes the timer node from the timerqueue. ++ * Removes the timer node from the timerqueue. Returns true if the queue is ++ * not empty after the remove. + */ + bool timerqueue_del(struct timerqueue_head *head, struct timerqueue_node *node) + { +-- +2.15.1 + diff --git a/debian/patches/features/all/rt/0004-tracing-Remove-code-which-merges-duplicates.patch b/debian/patches/features/all/rt/0004-tracing-Remove-code-which-merges-duplicates.patch index 380b185c0..7e62a7ca2 100644 --- a/debian/patches/features/all/rt/0004-tracing-Remove-code-which-merges-duplicates.patch +++ b/debian/patches/features/all/rt/0004-tracing-Remove-code-which-merges-duplicates.patch @@ -1,7 +1,7 @@ From: Vedang Patel -Date: Wed, 6 Dec 2017 16:37:45 -0600 +Date: Thu, 21 Dec 2017 10:02:26 -0600 Subject: [PATCH 04/37] tracing: Remove code which merges duplicates -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz We now have the logic to detect and remove duplicates in the tracing_map hash table. The code which merges duplicates in the diff --git a/debian/patches/features/all/rt/0004-tracing-Remove-lookups-from-tracing_map-hitcount.patch b/debian/patches/features/all/rt/0004-tracing-Remove-lookups-from-tracing_map-hitcount.patch index 4ba01f7ce..8ce9fc70f 100644 --- a/debian/patches/features/all/rt/0004-tracing-Remove-lookups-from-tracing_map-hitcount.patch +++ b/debian/patches/features/all/rt/0004-tracing-Remove-lookups-from-tracing_map-hitcount.patch @@ -1,7 +1,7 @@ From: Tom Zanussi Date: Fri, 22 Sep 2017 14:58:18 -0500 Subject: [PATCH 04/42] tracing: Remove lookups from tracing_map hitcount -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Lookups inflate the hitcount, making it essentially useless. Only inserts and updates should really affect the hitcount anyway, so diff --git a/debian/patches/features/all/rt/0005-hrtimer-Fix-hrtimer-function-description.patch b/debian/patches/features/all/rt/0005-hrtimer-Fix-hrtimer-function-description.patch index cbb0f96d8..73762a801 100644 --- a/debian/patches/features/all/rt/0005-hrtimer-Fix-hrtimer-function-description.patch +++ b/debian/patches/features/all/rt/0005-hrtimer-Fix-hrtimer-function-description.patch @@ -1,14 +1,13 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:39:42 +0200 -Subject: [PATCH 05/36] hrtimer: Fix hrtimer function description -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Date: Wed, 20 Dec 2017 17:12:54 +0100 +Subject: [PATCH 05/29] hrtimer: Fix hrtimer function description +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The hrtimer_start[_range_ns]() starts a timer reliable on this CPU only when HRTIMER_MODE_PINNED is set. Furthermore the HRTIMER_MODE_PINNED mode is not considered, when a hrtimer is initialized. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- include/linux/hrtimer.h | 6 +++--- diff --git a/debian/patches/features/all/rt/0005-ring-buffer-Add-interface-for-setting-absolute-time-.patch b/debian/patches/features/all/rt/0005-ring-buffer-Add-interface-for-setting-absolute-time-.patch index 8b4965254..4809e4c44 100644 --- a/debian/patches/features/all/rt/0005-ring-buffer-Add-interface-for-setting-absolute-time-.patch +++ b/debian/patches/features/all/rt/0005-ring-buffer-Add-interface-for-setting-absolute-time-.patch @@ -1,8 +1,8 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:37:46 -0600 +Date: Thu, 21 Dec 2017 10:02:27 -0600 Subject: [PATCH 05/37] ring-buffer: Add interface for setting absolute time stamps -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Define a new function, tracing_set_time_stamp_abs(), which can be used to enable or disable the use of absolute timestamps rather than time @@ -70,7 +70,7 @@ Signed-off-by: Sebastian Andrzej Siewior (EVENT_FILE_FL_SOFT_DISABLED | EVENT_FILE_FL_FILTERED)) && (entry = this_cpu_read(trace_buffered_event))) { /* Try to use the per cpu buffer first */ -@@ -6297,6 +6297,37 @@ static int tracing_clock_open(struct ino +@@ -6286,6 +6286,37 @@ static int tracing_clock_open(struct ino return ret; } diff --git a/debian/patches/features/all/rt/0005-tracing-Increase-tracing-map-KEYS_MAX-size.patch b/debian/patches/features/all/rt/0005-tracing-Increase-tracing-map-KEYS_MAX-size.patch index 408a29c8b..79fa53e4e 100644 --- a/debian/patches/features/all/rt/0005-tracing-Increase-tracing-map-KEYS_MAX-size.patch +++ b/debian/patches/features/all/rt/0005-tracing-Increase-tracing-map-KEYS_MAX-size.patch @@ -1,7 +1,7 @@ From: Tom Zanussi Date: Fri, 22 Sep 2017 14:58:19 -0500 Subject: [PATCH 05/42] tracing: Increase tracing map KEYS_MAX size -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The current default for the number of subkeys in a compound key is 2, which is too restrictive. Increase it to a more realistic value of 3. diff --git a/debian/patches/features/all/rt/0006-hrtimer-Ensure-POSIX-compliance-relative-CLOCK_REALT.patch b/debian/patches/features/all/rt/0006-hrtimer-Ensure-POSIX-compliance-relative-CLOCK_REALT.patch index 8a4a3fb71..49bdd50d9 100644 --- a/debian/patches/features/all/rt/0006-hrtimer-Ensure-POSIX-compliance-relative-CLOCK_REALT.patch +++ b/debian/patches/features/all/rt/0006-hrtimer-Ensure-POSIX-compliance-relative-CLOCK_REALT.patch @@ -1,8 +1,8 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:39:43 +0200 -Subject: [PATCH 06/36] hrtimer: Ensure POSIX compliance (relative +Date: Wed, 20 Dec 2017 17:12:55 +0100 +Subject: [PATCH 06/29] hrtimer: Ensure POSIX compliance (relative CLOCK_REALTIME hrtimers) -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz POSIX specification defines, that relative CLOCK_REALTIME timers are not affected by clock modifications. Those timers have to use CLOCK_MONOTONIC @@ -18,7 +18,6 @@ comparing with HRTIMER_MODE_ABS. Fixes: 597d0275736d ("timers: Framework for identifying pinned timers") Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- kernel/time/hrtimer.c | 7 ++++++- diff --git a/debian/patches/features/all/rt/0006-ring-buffer-Redefine-the-unimplemented-RINGBUF_TYPE_.patch b/debian/patches/features/all/rt/0006-ring-buffer-Redefine-the-unimplemented-RINGBUF_TYPE_.patch index a93616533..c3d38a278 100644 --- a/debian/patches/features/all/rt/0006-ring-buffer-Redefine-the-unimplemented-RINGBUF_TYPE_.patch +++ b/debian/patches/features/all/rt/0006-ring-buffer-Redefine-the-unimplemented-RINGBUF_TYPE_.patch @@ -1,8 +1,8 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:37:47 -0600 +Date: Thu, 21 Dec 2017 10:02:28 -0600 Subject: [PATCH 06/37] ring-buffer: Redefine the unimplemented RINGBUF_TYPE_TIME_STAMP -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz RINGBUF_TYPE_TIME_STAMP is defined but not used, and from what I can gather was reserved for something like an absolute timestamp feature diff --git a/debian/patches/features/all/rt/0006-tracing-Make-traceprobe-parsing-code-reusable.patch b/debian/patches/features/all/rt/0006-tracing-Make-traceprobe-parsing-code-reusable.patch index 64f826992..f0762e74c 100644 --- a/debian/patches/features/all/rt/0006-tracing-Make-traceprobe-parsing-code-reusable.patch +++ b/debian/patches/features/all/rt/0006-tracing-Make-traceprobe-parsing-code-reusable.patch @@ -1,7 +1,7 @@ From: Tom Zanussi Date: Fri, 22 Sep 2017 14:58:20 -0500 Subject: [PATCH 06/42] tracing: Make traceprobe parsing code reusable -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz traceprobe_probes_write() and traceprobe_command() actually contain nothing that ties them to kprobes - the code is generically useful for diff --git a/debian/patches/features/all/rt/0007-hrtimer-Cleanup-hrtimer_mode-enum.patch b/debian/patches/features/all/rt/0007-hrtimer-Cleanup-hrtimer_mode-enum.patch index fb6c28e07..2fed0af6c 100644 --- a/debian/patches/features/all/rt/0007-hrtimer-Cleanup-hrtimer_mode-enum.patch +++ b/debian/patches/features/all/rt/0007-hrtimer-Cleanup-hrtimer_mode-enum.patch @@ -1,7 +1,7 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:39:44 +0200 -Subject: [PATCH 07/36] hrtimer: Cleanup hrtimer_mode enum -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Date: Wed, 20 Dec 2017 17:12:56 +0100 +Subject: [PATCH 07/29] hrtimer: Cleanup hrtimer_mode enum +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz It's not obvious that the HRTIMER_MODE variants are bit combinations because all modes are hard coded constants. @@ -12,7 +12,6 @@ modes which combine bits. While at it get rid of the ugly tail comments. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- include/linux/hrtimer.h | 16 +++++++++++----- diff --git a/debian/patches/features/all/rt/0007-tracing-Add-timestamp_mode-trace-file.patch b/debian/patches/features/all/rt/0007-tracing-Add-timestamp_mode-trace-file.patch index e360bc318..6f3fa3349 100644 --- a/debian/patches/features/all/rt/0007-tracing-Add-timestamp_mode-trace-file.patch +++ b/debian/patches/features/all/rt/0007-tracing-Add-timestamp_mode-trace-file.patch @@ -1,7 +1,7 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:37:48 -0600 +Date: Thu, 21 Dec 2017 10:02:29 -0600 Subject: [PATCH 07/37] tracing: Add timestamp_mode trace file -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Add a new option flag indicating whether or not the ring buffer is in 'absolute timestamp' mode. @@ -57,7 +57,7 @@ Signed-off-by: Sebastian Andrzej Siewior Directory for the Hardware Latency Detector. --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c -@@ -4531,6 +4531,9 @@ static const char readme_msg[] = +@@ -4520,6 +4520,9 @@ static const char readme_msg[] = #ifdef CONFIG_X86_64 " x86-tsc: TSC cycle counter\n" #endif @@ -67,7 +67,7 @@ Signed-off-by: Sebastian Andrzej Siewior "\n trace_marker\t\t- Writes into this file writes into the kernel buffer\n" "\n trace_marker_raw\t\t- Writes into this file writes binary data into the kernel buffer\n" " tracing_cpumask\t- Limit which CPUs to trace\n" -@@ -6298,6 +6301,40 @@ static int tracing_clock_open(struct ino +@@ -6287,6 +6290,40 @@ static int tracing_clock_open(struct ino return ret; } @@ -108,7 +108,7 @@ Signed-off-by: Sebastian Andrzej Siewior int tracing_set_time_stamp_abs(struct trace_array *tr, bool abs) { int ret = 0; -@@ -6576,6 +6613,13 @@ static const struct file_operations trac +@@ -6565,6 +6602,13 @@ static const struct file_operations trac .write = tracing_clock_write, }; @@ -122,7 +122,7 @@ Signed-off-by: Sebastian Andrzej Siewior #ifdef CONFIG_TRACER_SNAPSHOT static const struct file_operations snapshot_fops = { .open = tracing_snapshot_open, -@@ -7903,6 +7947,9 @@ init_tracer_tracefs(struct trace_array * +@@ -7892,6 +7936,9 @@ init_tracer_tracefs(struct trace_array * trace_create_file("tracing_on", 0644, d_tracer, tr, &rb_simple_fops); diff --git a/debian/patches/features/all/rt/0007-tracing-Clean-up-hist_field_flags-enum.patch b/debian/patches/features/all/rt/0007-tracing-Clean-up-hist_field_flags-enum.patch index e520a0061..d37a7e09f 100644 --- a/debian/patches/features/all/rt/0007-tracing-Clean-up-hist_field_flags-enum.patch +++ b/debian/patches/features/all/rt/0007-tracing-Clean-up-hist_field_flags-enum.patch @@ -1,7 +1,7 @@ From: Tom Zanussi Date: Fri, 22 Sep 2017 14:58:21 -0500 Subject: [PATCH 07/42] tracing: Clean up hist_field_flags enum -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz As we add more flags, specifying explicit integers for the flag values becomes more unwieldy and error-prone - switch them over to left-shift diff --git a/debian/patches/features/all/rt/0008-tracing-Add-hist_field_name-accessor.patch b/debian/patches/features/all/rt/0008-tracing-Add-hist_field_name-accessor.patch index 05cb834ff..c633813ff 100644 --- a/debian/patches/features/all/rt/0008-tracing-Add-hist_field_name-accessor.patch +++ b/debian/patches/features/all/rt/0008-tracing-Add-hist_field_name-accessor.patch @@ -1,7 +1,7 @@ From: Tom Zanussi Date: Fri, 22 Sep 2017 14:58:22 -0500 Subject: [PATCH 08/42] tracing: Add hist_field_name() accessor -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz In preparation for hist_fields that won't be strictly based on trace_event_fields, add a new hist_field_name() accessor to allow that diff --git a/debian/patches/features/all/rt/0008-tracing-Give-event-triggers-access-to-ring_buffer_ev.patch b/debian/patches/features/all/rt/0008-tracing-Give-event-triggers-access-to-ring_buffer_ev.patch index 38b43f8e8..ed5f3b3e0 100644 --- a/debian/patches/features/all/rt/0008-tracing-Give-event-triggers-access-to-ring_buffer_ev.patch +++ b/debian/patches/features/all/rt/0008-tracing-Give-event-triggers-access-to-ring_buffer_ev.patch @@ -1,8 +1,8 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:37:49 -0600 +Date: Thu, 21 Dec 2017 10:02:30 -0600 Subject: [PATCH 08/37] tracing: Give event triggers access to ring_buffer_event -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The ring_buffer event can provide a timestamp that may be useful to various triggers - pass it into the handlers for that purpose. diff --git a/debian/patches/features/all/rt/0008-tracing-hrtimer-Take-all-clock-bases-and-modes-into-.patch b/debian/patches/features/all/rt/0008-tracing-hrtimer-Take-all-clock-bases-and-modes-into-.patch index 596a35aaf..cb30f795c 100644 --- a/debian/patches/features/all/rt/0008-tracing-hrtimer-Take-all-clock-bases-and-modes-into-.patch +++ b/debian/patches/features/all/rt/0008-tracing-hrtimer-Take-all-clock-bases-and-modes-into-.patch @@ -1,8 +1,8 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:39:45 +0200 -Subject: [PATCH 08/36] tracing/hrtimer: Take all clock bases and modes into +Date: Wed, 20 Dec 2017 17:12:57 +0100 +Subject: [PATCH 08/29] tracing/hrtimer: Take all clock bases and modes into account -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz So far only CLOCK_MONOTONIC and CLOCK_REALTIME were taken into account as well as HRTIMER_MODE_ABS/REL in hrtimer_init tracepoint. The query for @@ -13,7 +13,6 @@ HRTIMER_MODE_PINNED is not evaluated in hrtimer_init() call. But for the sake of completeness print all given modes. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- include/trace/events/timer.h | 20 ++++++++++++++++---- diff --git a/debian/patches/features/all/rt/0009-tracing-Add-ring-buffer-event-param-to-hist-field-fu.patch b/debian/patches/features/all/rt/0009-tracing-Add-ring-buffer-event-param-to-hist-field-fu.patch index b9d5af457..12201f318 100644 --- a/debian/patches/features/all/rt/0009-tracing-Add-ring-buffer-event-param-to-hist-field-fu.patch +++ b/debian/patches/features/all/rt/0009-tracing-Add-ring-buffer-event-param-to-hist-field-fu.patch @@ -1,8 +1,8 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:37:50 -0600 +Date: Thu, 21 Dec 2017 10:02:31 -0600 Subject: [PATCH 09/37] tracing: Add ring buffer event param to hist field functions -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Some events such as timestamps require access to a ring_buffer_event struct; add a param so that hist field functions can access that. diff --git a/debian/patches/features/all/rt/0009-tracing-Reimplement-log2.patch b/debian/patches/features/all/rt/0009-tracing-Reimplement-log2.patch index af8158ae9..e7d86137e 100644 --- a/debian/patches/features/all/rt/0009-tracing-Reimplement-log2.patch +++ b/debian/patches/features/all/rt/0009-tracing-Reimplement-log2.patch @@ -1,7 +1,7 @@ From: Tom Zanussi Date: Fri, 22 Sep 2017 14:58:23 -0500 Subject: [PATCH 09/42] tracing: Reimplement log2 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz log2 as currently implemented applies only to u64 trace_event_field derived fields, and assumes that anything it's applied to is a u64 diff --git a/debian/patches/features/all/rt/0009-tracing-hrtimer-Print-hrtimer-mode-in-hrtimer_start-.patch b/debian/patches/features/all/rt/0009-tracing-hrtimer-Print-hrtimer-mode-in-hrtimer_start-.patch index c58f557e8..0f84457a8 100644 --- a/debian/patches/features/all/rt/0009-tracing-hrtimer-Print-hrtimer-mode-in-hrtimer_start-.patch +++ b/debian/patches/features/all/rt/0009-tracing-hrtimer-Print-hrtimer-mode-in-hrtimer_start-.patch @@ -1,8 +1,8 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:39:46 +0200 -Subject: [PATCH 09/36] tracing/hrtimer: Print hrtimer mode in hrtimer_start +Date: Wed, 20 Dec 2017 17:12:58 +0100 +Subject: [PATCH 09/29] tracing/hrtimer: Print hrtimer mode in hrtimer_start tracepoint -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The hrtimer_start tracepoint lacks the mode information. The mode is important because consecutive starts can switch from ABS to REL or from @@ -11,7 +11,6 @@ PINNED to non PINNED. Add the mode information. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- include/trace/events/timer.h | 13 ++++++++----- diff --git a/debian/patches/features/all/rt/0010-hrtimer-Switch-for-loop-to-_ffs-evaluation.patch b/debian/patches/features/all/rt/0010-hrtimer-Switch-for-loop-to-_ffs-evaluation.patch index a03adce18..f9eeacaa1 100644 --- a/debian/patches/features/all/rt/0010-hrtimer-Switch-for-loop-to-_ffs-evaluation.patch +++ b/debian/patches/features/all/rt/0010-hrtimer-Switch-for-loop-to-_ffs-evaluation.patch @@ -1,7 +1,7 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:39:47 +0200 -Subject: [PATCH 10/36] hrtimer: Switch for loop to _ffs() evaluation -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Date: Wed, 20 Dec 2017 17:12:59 +0100 +Subject: [PATCH 10/29] hrtimer: Switch for loop to _ffs() evaluation +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Looping over all clock bases to find active bits is suboptimal if not all bases are active. @@ -12,7 +12,6 @@ Peter Zijlstra. Suggested-by: Peter Zijlstra Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- kernel/time/hrtimer.c | 31 +++++++++++++++++++++---------- @@ -27,15 +26,15 @@ Signed-off-by: Sebastian Andrzej Siewior +static struct hrtimer_clock_base * +__next_base(struct hrtimer_cpu_base *cpu_base, unsigned int *active) +{ -+ struct hrtimer_clock_base *base = NULL; ++ unsigned int idx; + -+ if (*active) { -+ unsigned int idx = __ffs(*active); -+ *active &= ~(1U << idx); -+ base = &cpu_base->clock_base[idx]; -+ } ++ if (!*active) ++ return NULL; + -+ return base; ++ idx = __ffs(*active); ++ *active &= ~(1U << idx); ++ ++ return &cpu_base->clock_base[idx]; +} + +#define for_each_active_base(base, cpu_base, active) \ diff --git a/debian/patches/features/all/rt/0010-tracing-Break-out-hist-trigger-assignment-parsing.patch b/debian/patches/features/all/rt/0010-tracing-Break-out-hist-trigger-assignment-parsing.patch index ebfbec546..6051e8896 100644 --- a/debian/patches/features/all/rt/0010-tracing-Break-out-hist-trigger-assignment-parsing.patch +++ b/debian/patches/features/all/rt/0010-tracing-Break-out-hist-trigger-assignment-parsing.patch @@ -1,7 +1,7 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:37:51 -0600 +Date: Thu, 21 Dec 2017 10:02:32 -0600 Subject: [PATCH 10/37] tracing: Break out hist trigger assignment parsing -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz This will make it easier to add variables, and makes the parsing code cleaner regardless. diff --git a/debian/patches/features/all/rt/0011-hrtimer-Store-running-timer-in-hrtimer_clock_base.patch b/debian/patches/features/all/rt/0011-hrtimer-Store-running-timer-in-hrtimer_clock_base.patch index d386e26c0..50923ff27 100644 --- a/debian/patches/features/all/rt/0011-hrtimer-Store-running-timer-in-hrtimer_clock_base.patch +++ b/debian/patches/features/all/rt/0011-hrtimer-Store-running-timer-in-hrtimer_clock_base.patch @@ -1,7 +1,7 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:39:48 +0200 -Subject: [PATCH 11/36] hrtimer: Store running timer in hrtimer_clock_base -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Date: Wed, 20 Dec 2017 17:13:00 +0100 +Subject: [PATCH 11/29] hrtimer: Store running timer in hrtimer_clock_base +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The pointer to the currently running timer is stored in hrtimer_cpu_base before the base lock is dropped and the callback is invoked. @@ -27,7 +27,6 @@ looking at the number of cache lines involved for the frequently used clocks. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- include/linux/hrtimer.h | 20 +++++++++----------- diff --git a/debian/patches/features/all/rt/0011-tracing-Add-hist-trigger-timestamp-support.patch b/debian/patches/features/all/rt/0011-tracing-Add-hist-trigger-timestamp-support.patch index 1b7457ac2..8b2f70d78 100644 --- a/debian/patches/features/all/rt/0011-tracing-Add-hist-trigger-timestamp-support.patch +++ b/debian/patches/features/all/rt/0011-tracing-Add-hist-trigger-timestamp-support.patch @@ -1,7 +1,7 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:37:52 -0600 +Date: Thu, 21 Dec 2017 10:02:33 -0600 Subject: [PATCH 11/37] tracing: Add hist trigger timestamp support -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Add support for a timestamp event field. This is actually a 'pseudo-' event field in that it behaves like it's part of the event record, but diff --git a/debian/patches/features/all/rt/0012-hrtimer-Make-room-in-struct-hrtimer_cpu_base.patch b/debian/patches/features/all/rt/0012-hrtimer-Make-room-in-struct-hrtimer_cpu_base.patch index c15cf9e13..5bb419423 100644 --- a/debian/patches/features/all/rt/0012-hrtimer-Make-room-in-struct-hrtimer_cpu_base.patch +++ b/debian/patches/features/all/rt/0012-hrtimer-Make-room-in-struct-hrtimer_cpu_base.patch @@ -1,7 +1,7 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:39:50 +0200 -Subject: [PATCH 12/36] hrtimer: Make room in struct hrtimer_cpu_base -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Date: Wed, 20 Dec 2017 17:13:01 +0100 +Subject: [PATCH 12/29] hrtimer: Make room in struct hrtimer_cpu_base +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The upcoming softirq based hrtimers support requires an additional field in the hrtimer_cpu_base struct, which would grow the struct size beyond a @@ -14,7 +14,6 @@ Make them unsigned short to create room for the new struct member. No functional change. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- include/linux/hrtimer.h | 4 ++-- diff --git a/debian/patches/features/all/rt/0012-tracing-Add-per-element-variable-support-to-tracing_.patch b/debian/patches/features/all/rt/0012-tracing-Add-per-element-variable-support-to-tracing_.patch index 7537226e8..500f15aa3 100644 --- a/debian/patches/features/all/rt/0012-tracing-Add-per-element-variable-support-to-tracing_.patch +++ b/debian/patches/features/all/rt/0012-tracing-Add-per-element-variable-support-to-tracing_.patch @@ -1,8 +1,8 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:37:53 -0600 +Date: Thu, 21 Dec 2017 10:02:34 -0600 Subject: [PATCH 12/37] tracing: Add per-element variable support to tracing_map -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz In order to allow information to be passed between trace events, add support for per-element variables to tracing_map. This provides a diff --git a/debian/patches/features/all/rt/0013-hrtimer-Reduce-conditional-code-hres_active.patch b/debian/patches/features/all/rt/0013-hrtimer-Reduce-conditional-code-hres_active.patch index 50861176d..3fba5be22 100644 --- a/debian/patches/features/all/rt/0013-hrtimer-Reduce-conditional-code-hres_active.patch +++ b/debian/patches/features/all/rt/0013-hrtimer-Reduce-conditional-code-hres_active.patch @@ -1,7 +1,7 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:39:51 +0200 -Subject: [PATCH 13/36] hrtimer: Reduce conditional code (hres_active) -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Date: Wed, 20 Dec 2017 17:13:02 +0100 +Subject: [PATCH 13/29] hrtimer: Reduce conditional code (hres_active) +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The hrtimer_cpu_base struct has the CONFIG_HIGH_RES_TIMERS conditional struct member hres_active. All related functions to this member are @@ -16,7 +16,6 @@ conditionals into common functions, which ensures dead code elimination. Suggested-by: Thomas Gleixner Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- include/linux/hrtimer.h | 20 ++++++++------------ diff --git a/debian/patches/features/all/rt/0013-tracing-Add-hist_data-member-to-hist_field.patch b/debian/patches/features/all/rt/0013-tracing-Add-hist_data-member-to-hist_field.patch index bcf72f896..d60cf8241 100644 --- a/debian/patches/features/all/rt/0013-tracing-Add-hist_data-member-to-hist_field.patch +++ b/debian/patches/features/all/rt/0013-tracing-Add-hist_data-member-to-hist_field.patch @@ -1,7 +1,7 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:37:54 -0600 +Date: Thu, 21 Dec 2017 10:02:35 -0600 Subject: [PATCH 13/37] tracing: Add hist_data member to hist_field -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Allow hist_data access via hist_field. Some users of hist_fields require or will require more access to the associated hist_data. diff --git a/debian/patches/features/all/rt/0014-hrtimer-Use-accesor-functions-instead-of-direct-acce.patch b/debian/patches/features/all/rt/0014-hrtimer-Use-accesor-functions-instead-of-direct-acce.patch index 0f284a9a2..a6c0b71d6 100644 --- a/debian/patches/features/all/rt/0014-hrtimer-Use-accesor-functions-instead-of-direct-acce.patch +++ b/debian/patches/features/all/rt/0014-hrtimer-Use-accesor-functions-instead-of-direct-acce.patch @@ -1,7 +1,7 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:39:52 +0200 -Subject: [PATCH 14/36] hrtimer: Use accesor functions instead of direct access -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Date: Wed, 20 Dec 2017 17:13:03 +0100 +Subject: [PATCH 14/29] hrtimer: Use accesor functions instead of direct access +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz __hrtimer_hres_active() is now available unconditionally. Replace the direct access to hrtimer_cpu_base.hres_active. @@ -9,7 +9,6 @@ direct access to hrtimer_cpu_base.hres_active. No functional change. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- kernel/time/hrtimer.c | 4 ++-- diff --git a/debian/patches/features/all/rt/0014-tracing-Add-usecs-modifier-for-hist-trigger-timestam.patch b/debian/patches/features/all/rt/0014-tracing-Add-usecs-modifier-for-hist-trigger-timestam.patch index 5f02c595a..c85d8067a 100644 --- a/debian/patches/features/all/rt/0014-tracing-Add-usecs-modifier-for-hist-trigger-timestam.patch +++ b/debian/patches/features/all/rt/0014-tracing-Add-usecs-modifier-for-hist-trigger-timestam.patch @@ -1,7 +1,7 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:37:55 -0600 +Date: Thu, 21 Dec 2017 10:02:36 -0600 Subject: [PATCH 14/37] tracing: Add usecs modifier for hist trigger timestamps -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Appending .usecs onto a common_timestamp field will cause the timestamp value to be in microseconds instead of the default @@ -50,7 +50,7 @@ Signed-off-by: Sebastian Andrzej Siewior /* * trace_parser_get_init - gets the buffer for trace parser */ -@@ -4710,8 +4718,9 @@ static const char readme_msg[] = +@@ -4699,8 +4707,9 @@ static const char readme_msg[] = "\t .sym display an address as a symbol\n" "\t .sym-offset display an address as a symbol and offset\n" "\t .execname display a common_pid as a program name\n" diff --git a/debian/patches/features/all/rt/0015-hrtimer-Make-the-remote-enqueue-check-unconditional.patch b/debian/patches/features/all/rt/0015-hrtimer-Make-the-remote-enqueue-check-unconditional.patch index 918c03cde..778b326ac 100644 --- a/debian/patches/features/all/rt/0015-hrtimer-Make-the-remote-enqueue-check-unconditional.patch +++ b/debian/patches/features/all/rt/0015-hrtimer-Make-the-remote-enqueue-check-unconditional.patch @@ -1,7 +1,7 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:39:53 +0200 -Subject: [PATCH 15/36] hrtimer: Make the remote enqueue check unconditional -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Date: Wed, 20 Dec 2017 17:13:04 +0100 +Subject: [PATCH 15/29] hrtimer: Make the remote enqueue check unconditional +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz hrtimer_cpu_base.expires_next is used to cache the next event armed in the timer hardware. The value is used to check whether an hrtimer can be @@ -22,7 +22,6 @@ hrtimer_cpu_base.expires_next yet. This will be changed with later patches which further reduce the #ifdef zoo in this code. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- include/linux/hrtimer.h | 6 +++--- diff --git a/debian/patches/features/all/rt/0015-tracing-Add-variable-support-to-hist-triggers.patch b/debian/patches/features/all/rt/0015-tracing-Add-variable-support-to-hist-triggers.patch index 8a7a8637d..f1920c87d 100644 --- a/debian/patches/features/all/rt/0015-tracing-Add-variable-support-to-hist-triggers.patch +++ b/debian/patches/features/all/rt/0015-tracing-Add-variable-support-to-hist-triggers.patch @@ -1,7 +1,7 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:37:56 -0600 +Date: Thu, 21 Dec 2017 10:02:37 -0600 Subject: [PATCH 15/37] tracing: Add variable support to hist triggers -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Add support for saving the value of a current event's event field by assigning it to a variable that can be read by a subsequent event. @@ -37,8 +37,8 @@ Signed-off-by: Tom Zanussi Signed-off-by: Baohong Liu Signed-off-by: Sebastian Andrzej Siewior --- - kernel/trace/trace_events_hist.c | 372 ++++++++++++++++++++++++++++++++++----- - 1 file changed, 332 insertions(+), 40 deletions(-) + kernel/trace/trace_events_hist.c | 370 ++++++++++++++++++++++++++++++++++----- + 1 file changed, 331 insertions(+), 39 deletions(-) --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -606,8 +606,7 @@ Signed-off-by: Sebastian Andrzej Siewior for_each_hist_val_field(i, hist_data) { hist_field = hist_data->fields[i]; -- hist_val = hist_field->fn(hist_field, rec, rbe); -+ hist_val = hist_field->fn(hist_field, rbe, rec); + hist_val = hist_field->fn(hist_field, rec, rbe); + if (hist_field->flags & HIST_FIELD_FL_VAR) { + var_idx = hist_field->var.idx; + tracing_map_set_var(elt, var_idx, hist_val); @@ -619,7 +618,7 @@ Signed-off-by: Sebastian Andrzej Siewior + for_each_hist_key_field(i, hist_data) { + hist_field = hist_data->fields[i]; + if (hist_field->flags & HIST_FIELD_FL_VAR) { -+ hist_val = hist_field->fn(hist_field, rbe, rec); ++ hist_val = hist_field->fn(hist_field, rec, rbe); + var_idx = hist_field->var.idx; + tracing_map_set_var(elt, var_idx, hist_val); + } diff --git a/debian/patches/features/all/rt/0016-hrtimer-Make-hrtimer_cpu_base.next_timer-handling-un.patch b/debian/patches/features/all/rt/0016-hrtimer-Make-hrtimer_cpu_base.next_timer-handling-un.patch index f54543294..e86dc3bc3 100644 --- a/debian/patches/features/all/rt/0016-hrtimer-Make-hrtimer_cpu_base.next_timer-handling-un.patch +++ b/debian/patches/features/all/rt/0016-hrtimer-Make-hrtimer_cpu_base.next_timer-handling-un.patch @@ -1,8 +1,8 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:39:54 +0200 -Subject: [PATCH 16/36] hrtimer: Make hrtimer_cpu_base.next_timer handling +Date: Wed, 20 Dec 2017 17:13:05 +0100 +Subject: [PATCH 16/29] hrtimer: Make hrtimer_cpu_base.next_timer handling unconditional -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz hrtimer_cpu_base.next_timer stores the pointer to the next expiring timer in a cpu base. @@ -24,7 +24,6 @@ marginal as it's just a store on an already dirtied cacheline. No functional change. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- include/linux/hrtimer.h | 4 ++-- diff --git a/debian/patches/features/all/rt/0016-tracing-Account-for-variables-in-named-trigger-compa.patch b/debian/patches/features/all/rt/0016-tracing-Account-for-variables-in-named-trigger-compa.patch index f149156bd..51c4c9000 100644 --- a/debian/patches/features/all/rt/0016-tracing-Account-for-variables-in-named-trigger-compa.patch +++ b/debian/patches/features/all/rt/0016-tracing-Account-for-variables-in-named-trigger-compa.patch @@ -1,8 +1,8 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:37:57 -0600 +Date: Thu, 21 Dec 2017 10:02:38 -0600 Subject: [PATCH 16/37] tracing: Account for variables in named trigger compatibility -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Named triggers must also have the same set of variables in order to be considered compatible - update the trigger match test to account for diff --git a/debian/patches/features/all/rt/0017-hrtimer-Make-hrtimer_reprogramm-unconditional.patch b/debian/patches/features/all/rt/0017-hrtimer-Make-hrtimer_reprogramm-unconditional.patch index 7fa37f86a..78f1386dd 100644 --- a/debian/patches/features/all/rt/0017-hrtimer-Make-hrtimer_reprogramm-unconditional.patch +++ b/debian/patches/features/all/rt/0017-hrtimer-Make-hrtimer_reprogramm-unconditional.patch @@ -1,7 +1,7 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:39:55 +0200 -Subject: [PATCH 17/36] hrtimer: Make hrtimer_reprogramm() unconditional -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Date: Wed, 20 Dec 2017 17:13:06 +0100 +Subject: [PATCH 17/29] hrtimer: Make hrtimer_reprogramm() unconditional +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz hrtimer_reprogram() needs to be available unconditionally for softirq based hrtimers. Move the function and all required struct members out of the @@ -13,7 +13,6 @@ increases the text size for the CONFIG_HIGH_RES_TIMERS=n case, but avoids replication of that code for the upcoming softirq based hrtimers support. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- include/linux/hrtimer.h | 6 +- diff --git a/debian/patches/features/all/rt/0017-tracing-Move-get_hist_field_flags.patch b/debian/patches/features/all/rt/0017-tracing-Move-get_hist_field_flags.patch index 0c8ab63dc..c71d08968 100644 --- a/debian/patches/features/all/rt/0017-tracing-Move-get_hist_field_flags.patch +++ b/debian/patches/features/all/rt/0017-tracing-Move-get_hist_field_flags.patch @@ -1,7 +1,7 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:37:58 -0600 +Date: Thu, 21 Dec 2017 10:02:39 -0600 Subject: [PATCH 17/37] tracing: Move get_hist_field_flags() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Move get_hist_field_flags() to make it more easily accessible for new code (and keep the move separate from new functionality). diff --git a/debian/patches/features/all/rt/0018-hrtimer-Make-hrtimer_force_reprogramm-unconditionall.patch b/debian/patches/features/all/rt/0018-hrtimer-Make-hrtimer_force_reprogramm-unconditionall.patch index ce4d0d82d..5e02ca900 100644 --- a/debian/patches/features/all/rt/0018-hrtimer-Make-hrtimer_force_reprogramm-unconditionall.patch +++ b/debian/patches/features/all/rt/0018-hrtimer-Make-hrtimer_force_reprogramm-unconditionall.patch @@ -1,8 +1,8 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:39:56 +0200 -Subject: [PATCH 18/36] hrtimer: Make hrtimer_force_reprogramm() +Date: Wed, 20 Dec 2017 17:13:07 +0100 +Subject: [PATCH 18/29] hrtimer: Make hrtimer_force_reprogramm() unconditionally available -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz hrtimer_force_reprogram() needs to be available unconditionally for softirq based hrtimers. Move the function and all required struct members out of @@ -18,7 +18,6 @@ for the upcoming softirq based hrtimers support. Most of the code gets eliminated in the CONFIG_HIGH_RES_TIMERS=n case by the compiler. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- kernel/time/hrtimer.c | 58 ++++++++++++++++++++++++-------------------------- diff --git a/debian/patches/features/all/rt/0018-tracing-Add-simple-expression-support-to-hist-trigge.patch b/debian/patches/features/all/rt/0018-tracing-Add-simple-expression-support-to-hist-trigge.patch index 28c52e7dd..9b66e5b38 100644 --- a/debian/patches/features/all/rt/0018-tracing-Add-simple-expression-support-to-hist-trigge.patch +++ b/debian/patches/features/all/rt/0018-tracing-Add-simple-expression-support-to-hist-trigge.patch @@ -1,7 +1,7 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:37:59 -0600 +Date: Thu, 21 Dec 2017 10:02:40 -0600 Subject: [PATCH 18/37] tracing: Add simple expression support to hist triggers -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Add support for simple addition, subtraction, and unary expressions (-(expr) and expr, where expr = b-a, a+b, a+b+c) to hist triggers, in diff --git a/debian/patches/features/all/rt/0019-hrtimer-Unify-handling-of-hrtimer-remove.patch b/debian/patches/features/all/rt/0019-hrtimer-Unify-handling-of-hrtimer-remove.patch index 7c0764b01..e5756b6af 100644 --- a/debian/patches/features/all/rt/0019-hrtimer-Unify-handling-of-hrtimer-remove.patch +++ b/debian/patches/features/all/rt/0019-hrtimer-Unify-handling-of-hrtimer-remove.patch @@ -1,7 +1,7 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:39:57 +0200 -Subject: [PATCH 19/36] hrtimer: Unify handling of hrtimer remove -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Date: Wed, 20 Dec 2017 17:13:08 +0100 +Subject: [PATCH 19/29] hrtimer: Unify handling of hrtimer remove +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz When the first hrtimer on the current CPU is removed, hrtimer_force_reprogram() is invoked but only when @@ -35,7 +35,6 @@ except the effective reprogramming part, which gets eliminated by the compiler in the CONFIG_HIGH_RES_TIMERS=n case. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- kernel/time/hrtimer.c | 10 ++++------ diff --git a/debian/patches/features/all/rt/0019-tracing-Generalize-per-element-hist-trigger-data.patch b/debian/patches/features/all/rt/0019-tracing-Generalize-per-element-hist-trigger-data.patch index a4b00b6ca..2c61c6358 100644 --- a/debian/patches/features/all/rt/0019-tracing-Generalize-per-element-hist-trigger-data.patch +++ b/debian/patches/features/all/rt/0019-tracing-Generalize-per-element-hist-trigger-data.patch @@ -1,7 +1,7 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:38:00 -0600 +Date: Thu, 21 Dec 2017 10:02:41 -0600 Subject: [PATCH 19/37] tracing: Generalize per-element hist trigger data -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Up until now, hist triggers only needed per-element support for saving 'comm' data, which was saved directly as a private data pointer. @@ -52,7 +52,7 @@ Signed-off-by: Sebastian Andrzej Siewior +static int hist_trigger_elt_data_alloc(struct tracing_map_elt *elt) { struct hist_trigger_data *hist_data = elt->map->private_data; -+ unsigned int size = TASK_COMM_LEN + 1; ++ unsigned int size = TASK_COMM_LEN; + struct hist_elt_data *elt_data; struct hist_field *key_field; unsigned int i; diff --git a/debian/patches/features/all/rt/0020-hrtimer-Unify-handling-of-remote-enqueue.patch b/debian/patches/features/all/rt/0020-hrtimer-Unify-handling-of-remote-enqueue.patch index 9af38aca4..a3f9128f9 100644 --- a/debian/patches/features/all/rt/0020-hrtimer-Unify-handling-of-remote-enqueue.patch +++ b/debian/patches/features/all/rt/0020-hrtimer-Unify-handling-of-remote-enqueue.patch @@ -1,7 +1,7 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:39:58 +0200 -Subject: [PATCH 20/36] hrtimer: Unify handling of remote enqueue -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Date: Wed, 20 Dec 2017 17:13:09 +0100 +Subject: [PATCH 20/29] hrtimer: Unify handling of remote enqueue +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz hrtimer_reprogram() is conditionally invoked from hrtimer_start_range_ns() when hrtimer_cpu_base.hres_active is true. @@ -47,7 +47,6 @@ Confine the timers_nohz_active static key to timer.c which is the only user now. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- kernel/time/hrtimer.c | 18 ++++++------------ diff --git a/debian/patches/features/all/rt/0020-tracing-Pass-tracing_map_elt-to-hist_field-accessor-.patch b/debian/patches/features/all/rt/0020-tracing-Pass-tracing_map_elt-to-hist_field-accessor-.patch index 7e34ad822..6f5b7b165 100644 --- a/debian/patches/features/all/rt/0020-tracing-Pass-tracing_map_elt-to-hist_field-accessor-.patch +++ b/debian/patches/features/all/rt/0020-tracing-Pass-tracing_map_elt-to-hist_field-accessor-.patch @@ -1,8 +1,8 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:38:01 -0600 +Date: Thu, 21 Dec 2017 10:02:42 -0600 Subject: [PATCH 20/37] tracing: Pass tracing_map_elt to hist_field accessor functions -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Some accessor functions, such as for variable references, require access to a corrsponding tracing_map_elt. @@ -186,7 +186,7 @@ Signed-off-by: Sebastian Andrzej Siewior for_each_hist_val_field(i, hist_data) { hist_field = hist_data->fields[i]; -- hist_val = hist_field->fn(hist_field, rbe, rec); +- hist_val = hist_field->fn(hist_field, rec, rbe); + hist_val = hist_field->fn(hist_field, elt, rbe, rec); if (hist_field->flags & HIST_FIELD_FL_VAR) { var_idx = hist_field->var.idx; @@ -195,7 +195,7 @@ Signed-off-by: Sebastian Andrzej Siewior for_each_hist_key_field(i, hist_data) { hist_field = hist_data->fields[i]; if (hist_field->flags & HIST_FIELD_FL_VAR) { -- hist_val = hist_field->fn(hist_field, rbe, rec); +- hist_val = hist_field->fn(hist_field, rec, rbe); + hist_val = hist_field->fn(hist_field, elt, rbe, rec); var_idx = hist_field->var.idx; tracing_map_set_var(elt, var_idx, hist_val); diff --git a/debian/patches/features/all/rt/0021-hrtimer-Make-remote-enqueue-decision-less-restrictiv.patch b/debian/patches/features/all/rt/0021-hrtimer-Make-remote-enqueue-decision-less-restrictiv.patch index 0a1cd0e67..21edfb655 100644 --- a/debian/patches/features/all/rt/0021-hrtimer-Make-remote-enqueue-decision-less-restrictiv.patch +++ b/debian/patches/features/all/rt/0021-hrtimer-Make-remote-enqueue-decision-less-restrictiv.patch @@ -1,7 +1,7 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:39:59 +0200 -Subject: [PATCH 21/36] hrtimer: Make remote enqueue decision less restrictive -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Date: Wed, 20 Dec 2017 17:13:10 +0100 +Subject: [PATCH 21/29] hrtimer: Make remote enqueue decision less restrictive +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The current decision whether a timer can be queued on a remote CPU checks for timer->expiry <= remote_cpu_base.expires_next. @@ -14,7 +14,6 @@ So its safe to allow enqueuing timers with the same expiry time as the first expiring timer on a remote CPU base. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- kernel/time/hrtimer.c | 2 +- diff --git a/debian/patches/features/all/rt/0021-tracing-Add-hist_field-type-field.patch b/debian/patches/features/all/rt/0021-tracing-Add-hist_field-type-field.patch index 3b988c05c..923e4defe 100644 --- a/debian/patches/features/all/rt/0021-tracing-Add-hist_field-type-field.patch +++ b/debian/patches/features/all/rt/0021-tracing-Add-hist_field-type-field.patch @@ -1,7 +1,7 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:38:02 -0600 +Date: Thu, 21 Dec 2017 10:02:43 -0600 Subject: [PATCH 21/37] tracing: Add hist_field 'type' field -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Future support for synthetic events requires hist_field 'type' information, so add a field for that. diff --git a/debian/patches/features/all/rt/0022-hrtimer-Remove-base-argument-from-hrtimer_reprogram.patch b/debian/patches/features/all/rt/0022-hrtimer-Remove-base-argument-from-hrtimer_reprogram.patch index b580fd533..3ccc37d03 100644 --- a/debian/patches/features/all/rt/0022-hrtimer-Remove-base-argument-from-hrtimer_reprogram.patch +++ b/debian/patches/features/all/rt/0022-hrtimer-Remove-base-argument-from-hrtimer_reprogram.patch @@ -1,7 +1,7 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:40:00 +0200 -Subject: [PATCH 22/36] hrtimer: Remove base argument from hrtimer_reprogram() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Date: Wed, 20 Dec 2017 17:13:11 +0100 +Subject: [PATCH 22/29] hrtimer: Remove base argument from hrtimer_reprogram() +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz hrtimer_reprogram() must have access to the hrtimer_clock_base of the new first expiring timer to access hrtimer_clock_base.offset for adjusting the @@ -19,7 +19,6 @@ Instead of handing in timer and timer->base as an argument remove the base argument from hrtimer_reprogram() and retrieve the clock base internally. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- kernel/time/hrtimer.c | 6 +++--- diff --git a/debian/patches/features/all/rt/0022-tracing-Add-variable-reference-handling-to-hist-trig.patch b/debian/patches/features/all/rt/0022-tracing-Add-variable-reference-handling-to-hist-trig.patch index c46486c59..ef9b805c6 100644 --- a/debian/patches/features/all/rt/0022-tracing-Add-variable-reference-handling-to-hist-trig.patch +++ b/debian/patches/features/all/rt/0022-tracing-Add-variable-reference-handling-to-hist-trig.patch @@ -1,8 +1,8 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:38:03 -0600 +Date: Thu, 21 Dec 2017 10:02:44 -0600 Subject: [PATCH 22/37] tracing: Add variable reference handling to hist triggers -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Add the necessary infrastructure to allow the variables defined on one event to be referenced in another. This allows variables set by a @@ -27,13 +27,13 @@ Signed-off-by: Sebastian Andrzej Siewior --- kernel/trace/trace.c | 2 kernel/trace/trace.h | 3 - kernel/trace/trace_events_hist.c | 673 +++++++++++++++++++++++++++++++++++- + kernel/trace/trace_events_hist.c | 660 +++++++++++++++++++++++++++++++++++- kernel/trace/trace_events_trigger.c | 6 - 4 files changed, 668 insertions(+), 16 deletions(-) + 4 files changed, 655 insertions(+), 16 deletions(-) --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c -@@ -7804,6 +7804,7 @@ static int instance_mkdir(const char *na +@@ -7793,6 +7793,7 @@ static int instance_mkdir(const char *na INIT_LIST_HEAD(&tr->systems); INIT_LIST_HEAD(&tr->events); @@ -41,7 +41,7 @@ Signed-off-by: Sebastian Andrzej Siewior if (allocate_trace_buffers(tr, trace_buf_size) < 0) goto out_free_tr; -@@ -8554,6 +8555,7 @@ ssize_t trace_parse_run_command(struct f +@@ -8543,6 +8544,7 @@ ssize_t trace_parse_run_command(struct f INIT_LIST_HEAD(&global_trace.systems); INIT_LIST_HEAD(&global_trace.events); @@ -315,7 +315,7 @@ Signed-off-by: Sebastian Andrzej Siewior static struct hist_field *find_var_field(struct hist_trigger_data *hist_data, const char *var_name) { -@@ -313,10 +529,150 @@ static struct hist_field *find_var(struc +@@ -313,10 +529,137 @@ static struct hist_field *find_var(struc return NULL; } @@ -326,36 +326,23 @@ Signed-off-by: Sebastian Andrzej Siewior +{ + struct hist_trigger_data *var_hist_data; + struct hist_var_data *var_data; -+ struct trace_event_call *call; + struct trace_event_file *file, *found = NULL; -+ const char *name; ++ ++ if (system) ++ return find_event_file(tr, system, event_name); + + list_for_each_entry(var_data, &tr->hist_vars, list) { + var_hist_data = var_data->hist_data; + file = var_hist_data->event_file; + if (file == found) + continue; -+ call = file->event_call; -+ name = trace_event_name(call); + -+ if (!system || !event_name) { -+ if (find_var(var_hist_data, file, var_name)) { -+ if (found) { -+ return NULL; -+ } ++ if (find_var_field(var_hist_data, var_name)) { ++ if (found) ++ return NULL; + -+ found = file; -+ } -+ continue; ++ found = file; + } -+ -+ if (strcmp(event_name, name) != 0) -+ continue; -+ if (strcmp(system, call->class->system) != 0) -+ continue; -+ -+ found = file; -+ break; + } + + return found; @@ -466,7 +453,7 @@ Signed-off-by: Sebastian Andrzej Siewior static const char *hist_field_name(struct hist_field *field, unsigned int level) { -@@ -331,8 +687,20 @@ static const char *hist_field_name(struc +@@ -331,8 +674,20 @@ static const char *hist_field_name(struc field_name = hist_field_name(field->operands[0], ++level); else if (field->flags & HIST_FIELD_FL_TIMESTAMP) field_name = "common_timestamp"; @@ -489,7 +476,7 @@ Signed-off-by: Sebastian Andrzej Siewior if (field_name == NULL) field_name = ""; -@@ -638,6 +1006,8 @@ static char *expr_str(struct hist_field +@@ -638,6 +993,8 @@ static char *expr_str(struct hist_field return expr; } @@ -498,7 +485,7 @@ Signed-off-by: Sebastian Andrzej Siewior strcat(expr, hist_field_name(field->operands[0], 0)); if (field->operands[0]->flags) { const char *flags_str = get_hist_field_flags(field->operands[0]); -@@ -660,6 +1030,8 @@ static char *expr_str(struct hist_field +@@ -660,6 +1017,8 @@ static char *expr_str(struct hist_field return NULL; } @@ -507,7 +494,7 @@ Signed-off-by: Sebastian Andrzej Siewior strcat(expr, hist_field_name(field->operands[1], 0)); if (field->operands[1]->flags) { const char *flags_str = get_hist_field_flags(field->operands[1]); -@@ -739,6 +1111,11 @@ static struct hist_field *create_hist_fi +@@ -739,6 +1098,11 @@ static struct hist_field *create_hist_fi if (flags & HIST_FIELD_FL_EXPR) goto out; /* caller will populate */ @@ -519,7 +506,7 @@ Signed-off-by: Sebastian Andrzej Siewior if (flags & HIST_FIELD_FL_HITCOUNT) { hist_field->fn = hist_field_counter; hist_field->size = sizeof(u64); -@@ -832,6 +1209,142 @@ static void destroy_hist_fields(struct h +@@ -832,6 +1196,142 @@ static void destroy_hist_fields(struct h } } @@ -662,7 +649,7 @@ Signed-off-by: Sebastian Andrzej Siewior static struct ftrace_event_field * parse_field(struct hist_trigger_data *hist_data, struct trace_event_file *file, char *field_str, unsigned long *flags) -@@ -888,10 +1401,40 @@ struct hist_field *parse_atom(struct his +@@ -888,10 +1388,40 @@ struct hist_field *parse_atom(struct his struct trace_event_file *file, char *str, unsigned long *flags, char *var_name) { @@ -703,7 +690,7 @@ Signed-off-by: Sebastian Andrzej Siewior field = parse_field(hist_data, file, str, flags); if (IS_ERR(field)) { ret = PTR_ERR(field); -@@ -1063,6 +1606,9 @@ static struct hist_field *parse_expr(str +@@ -1063,6 +1593,9 @@ static struct hist_field *parse_expr(str goto free; } @@ -713,7 +700,7 @@ Signed-off-by: Sebastian Andrzej Siewior expr->operands[0] = operand1; expr->operands[1] = operand2; expr->operator = field_op; -@@ -1235,6 +1781,12 @@ static int create_key_field(struct hist_ +@@ -1235,6 +1768,12 @@ static int create_key_field(struct hist_ goto out; } @@ -726,7 +713,7 @@ Signed-off-by: Sebastian Andrzej Siewior key_size = hist_field->size; } -@@ -1573,6 +2125,7 @@ create_hist_data(unsigned int map_bits, +@@ -1573,6 +2112,7 @@ create_hist_data(unsigned int map_bits, hist_data->attrs = attrs; hist_data->remove = remove; @@ -734,7 +721,7 @@ Signed-off-by: Sebastian Andrzej Siewior ret = create_hist_fields(hist_data, file); if (ret) -@@ -1595,12 +2148,6 @@ create_hist_data(unsigned int map_bits, +@@ -1595,12 +2135,6 @@ create_hist_data(unsigned int map_bits, ret = create_tracing_map_fields(hist_data); if (ret) goto free; @@ -747,7 +734,7 @@ Signed-off-by: Sebastian Andrzej Siewior out: return hist_data; free: -@@ -1615,12 +2162,17 @@ create_hist_data(unsigned int map_bits, +@@ -1615,12 +2149,17 @@ create_hist_data(unsigned int map_bits, static void hist_trigger_elt_update(struct hist_trigger_data *hist_data, struct tracing_map_elt *elt, void *rec, @@ -766,7 +753,7 @@ Signed-off-by: Sebastian Andrzej Siewior for_each_hist_val_field(i, hist_data) { hist_field = hist_data->fields[i]; hist_val = hist_field->fn(hist_field, elt, rbe, rec); -@@ -1672,6 +2224,7 @@ static void event_hist_trigger(struct ev +@@ -1672,6 +2211,7 @@ static void event_hist_trigger(struct ev struct hist_trigger_data *hist_data = data->private_data; bool use_compound_key = (hist_data->n_keys > 1); unsigned long entries[HIST_STACKTRACE_DEPTH]; @@ -774,7 +761,7 @@ Signed-off-by: Sebastian Andrzej Siewior char compound_key[HIST_KEY_SIZE_MAX]; struct tracing_map_elt *elt = NULL; struct stack_trace stacktrace; -@@ -1711,9 +2264,15 @@ static void event_hist_trigger(struct ev +@@ -1711,9 +2251,15 @@ static void event_hist_trigger(struct ev if (use_compound_key) key = compound_key; @@ -792,7 +779,7 @@ Signed-off-by: Sebastian Andrzej Siewior } static void hist_trigger_stacktrace_print(struct seq_file *m, -@@ -1930,8 +2489,11 @@ static void hist_field_print(struct seq_ +@@ -1930,8 +2476,11 @@ static void hist_field_print(struct seq_ if (hist_field->flags & HIST_FIELD_FL_TIMESTAMP) seq_puts(m, "common_timestamp"); @@ -805,7 +792,7 @@ Signed-off-by: Sebastian Andrzej Siewior if (hist_field->flags) { const char *flags_str = get_hist_field_flags(hist_field); -@@ -2071,7 +2633,11 @@ static void event_hist_trigger_free(stru +@@ -2071,7 +2620,11 @@ static void event_hist_trigger_free(stru if (!data->ref) { if (data->name) del_named_trigger(data); @@ -817,7 +804,7 @@ Signed-off-by: Sebastian Andrzej Siewior destroy_hist_data(hist_data); } } -@@ -2284,23 +2850,55 @@ static int hist_register_trigger(char *g +@@ -2284,23 +2837,55 @@ static int hist_register_trigger(char *g goto out; } @@ -877,7 +864,7 @@ Signed-off-by: Sebastian Andrzej Siewior static void hist_unregister_trigger(char *glob, struct event_trigger_ops *ops, struct event_trigger_data *data, struct trace_event_file *file) -@@ -2333,11 +2931,30 @@ static void hist_unregister_trigger(char +@@ -2333,11 +2918,30 @@ static void hist_unregister_trigger(char } } @@ -908,7 +895,7 @@ Signed-off-by: Sebastian Andrzej Siewior list_for_each_entry_safe(test, n, &file->triggers, list) { if (test->cmd_ops->trigger_type == ETT_EVENT_HIST) { hist_data = test->private_data; -@@ -2413,6 +3030,11 @@ static int event_hist_trigger_func(struc +@@ -2413,6 +3017,11 @@ static int event_hist_trigger_func(struc } if (remove) { @@ -920,7 +907,7 @@ Signed-off-by: Sebastian Andrzej Siewior cmd_ops->unreg(glob+1, trigger_ops, trigger_data, file); ret = 0; goto out_free; -@@ -2430,14 +3052,33 @@ static int event_hist_trigger_func(struc +@@ -2430,14 +3039,33 @@ static int event_hist_trigger_func(struc goto out_free; } else if (ret < 0) goto out_free; diff --git a/debian/patches/features/all/rt/0023-hrtimer-Split-hrtimer_start_range_ns.patch b/debian/patches/features/all/rt/0023-hrtimer-Split-hrtimer_start_range_ns.patch index a61f11515..f5a4f106c 100644 --- a/debian/patches/features/all/rt/0023-hrtimer-Split-hrtimer_start_range_ns.patch +++ b/debian/patches/features/all/rt/0023-hrtimer-Split-hrtimer_start_range_ns.patch @@ -1,13 +1,12 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:40:01 +0200 -Subject: [PATCH 23/36] hrtimer: Split hrtimer_start_range_ns() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Date: Wed, 20 Dec 2017 17:13:12 +0100 +Subject: [PATCH 23/29] hrtimer: Split hrtimer_start_range_ns() +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Preparatory patch for softirq based hrtimers to avoid code duplication. No functional change. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- kernel/time/hrtimer.c | 44 ++++++++++++++++++++++++-------------------- diff --git a/debian/patches/features/all/rt/0023-tracing-Add-hist-trigger-action-hook.patch b/debian/patches/features/all/rt/0023-tracing-Add-hist-trigger-action-hook.patch index ea6cd069e..a85a4328e 100644 --- a/debian/patches/features/all/rt/0023-tracing-Add-hist-trigger-action-hook.patch +++ b/debian/patches/features/all/rt/0023-tracing-Add-hist-trigger-action-hook.patch @@ -1,7 +1,7 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:38:04 -0600 +Date: Thu, 21 Dec 2017 10:02:45 -0600 Subject: [PATCH 23/37] tracing: Add hist trigger action hook -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Add a hook for executing extra actions whenever a histogram entry is added or updated. @@ -62,7 +62,7 @@ Signed-off-by: Sebastian Andrzej Siewior }; static u64 hist_field_timestamp(struct hist_field *hist_field, -@@ -777,6 +796,9 @@ static void destroy_hist_trigger_attrs(s +@@ -764,6 +783,9 @@ static void destroy_hist_trigger_attrs(s for (i = 0; i < attrs->n_assignments; i++) kfree(attrs->assignment_str[i]); @@ -72,7 +72,7 @@ Signed-off-by: Sebastian Andrzej Siewior kfree(attrs->name); kfree(attrs->sort_key_str); kfree(attrs->keys_str); -@@ -784,6 +806,16 @@ static void destroy_hist_trigger_attrs(s +@@ -771,6 +793,16 @@ static void destroy_hist_trigger_attrs(s kfree(attrs); } @@ -89,7 +89,7 @@ Signed-off-by: Sebastian Andrzej Siewior static int parse_assignment(char *str, struct hist_trigger_attrs *attrs) { int ret = 0; -@@ -867,8 +899,9 @@ static struct hist_trigger_attrs *parse_ +@@ -854,8 +886,9 @@ static struct hist_trigger_attrs *parse_ else if (strcmp(str, "clear") == 0) attrs->clear = true; else { @@ -101,7 +101,7 @@ Signed-off-by: Sebastian Andrzej Siewior } } -@@ -2056,11 +2089,55 @@ static int create_sort_keys(struct hist_ +@@ -2043,11 +2076,55 @@ static int create_sort_keys(struct hist_ return ret; } @@ -157,7 +157,7 @@ Signed-off-by: Sebastian Andrzej Siewior kfree(hist_data); } -@@ -2127,6 +2204,10 @@ create_hist_data(unsigned int map_bits, +@@ -2114,6 +2191,10 @@ create_hist_data(unsigned int map_bits, hist_data->remove = remove; hist_data->event_file = file; @@ -168,7 +168,7 @@ Signed-off-by: Sebastian Andrzej Siewior ret = create_hist_fields(hist_data, file); if (ret) goto free; -@@ -2218,6 +2299,20 @@ static inline void add_to_key(char *comp +@@ -2205,6 +2286,20 @@ static inline void add_to_key(char *comp memcpy(compound_key + key_field->offset, key, size); } @@ -189,7 +189,7 @@ Signed-off-by: Sebastian Andrzej Siewior static void event_hist_trigger(struct event_trigger_data *data, void *rec, struct ring_buffer_event *rbe) { -@@ -2273,6 +2368,9 @@ static void event_hist_trigger(struct ev +@@ -2260,6 +2355,9 @@ static void event_hist_trigger(struct ev return; hist_trigger_elt_update(hist_data, elt, rec, rbe, var_ref_vals); @@ -199,7 +199,7 @@ Signed-off-by: Sebastian Andrzej Siewior } static void hist_trigger_stacktrace_print(struct seq_file *m, -@@ -3059,6 +3157,10 @@ static int event_hist_trigger_func(struc +@@ -3046,6 +3144,10 @@ static int event_hist_trigger_func(struc if (has_hist_vars(hist_data)) save_hist_vars(hist_data); diff --git a/debian/patches/features/all/rt/0024-hrtimer-Split-__hrtimer_get_next_event.patch b/debian/patches/features/all/rt/0024-hrtimer-Split-__hrtimer_get_next_event.patch index df18b08fd..02d90afe3 100644 --- a/debian/patches/features/all/rt/0024-hrtimer-Split-__hrtimer_get_next_event.patch +++ b/debian/patches/features/all/rt/0024-hrtimer-Split-__hrtimer_get_next_event.patch @@ -1,13 +1,12 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:40:02 +0200 -Subject: [PATCH 24/36] hrtimer: Split __hrtimer_get_next_event() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Date: Wed, 20 Dec 2017 17:13:13 +0100 +Subject: [PATCH 24/29] hrtimer: Split __hrtimer_get_next_event() +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Preparatory patch for softirq based hrtimers to avoid code duplication. No functional change. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- kernel/time/hrtimer.c | 20 ++++++++++++++++---- diff --git a/debian/patches/features/all/rt/0024-tracing-Add-support-for-synthetic-events.patch b/debian/patches/features/all/rt/0024-tracing-Add-support-for-synthetic-events.patch index 6d40ac822..f379ca6cc 100644 --- a/debian/patches/features/all/rt/0024-tracing-Add-support-for-synthetic-events.patch +++ b/debian/patches/features/all/rt/0024-tracing-Add-support-for-synthetic-events.patch @@ -1,7 +1,7 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:38:05 -0600 +Date: Thu, 21 Dec 2017 10:02:46 -0600 Subject: [PATCH 24/37] tracing: Add support for 'synthetic' events -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Synthetic events are user-defined events generated from hist trigger variables saved from one or more other events. @@ -305,7 +305,7 @@ Signed-off-by: Sebastian Andrzej Siewior + /* parameter values */ + if (se->fields[i]->is_string) { + trace_seq_printf(s, print_fmt, se->fields[i]->name, -+ (char *)(long)entry->fields[n_u64], ++ (char *)&entry->fields[n_u64], + i == se->n_fields - 1 ? "" : " "); + n_u64 += STR_VAR_LEN_MAX / sizeof(u64); + } else { @@ -894,7 +894,7 @@ Signed-off-by: Sebastian Andrzej Siewior static u64 hist_field_timestamp(struct hist_field *hist_field, struct tracing_map_elt *elt, struct ring_buffer_event *rbe, -@@ -2974,6 +3788,28 @@ static int hist_trigger_enable(struct ev +@@ -2961,6 +3775,28 @@ static int hist_trigger_enable(struct ev return ret; } @@ -923,7 +923,7 @@ Signed-off-by: Sebastian Andrzej Siewior static bool hist_trigger_check_refs(struct event_trigger_data *data, struct trace_event_file *file) { -@@ -3049,6 +3885,8 @@ static void hist_unreg_all(struct trace_ +@@ -3036,6 +3872,8 @@ static void hist_unreg_all(struct trace_ { struct event_trigger_data *test, *n; struct hist_trigger_data *hist_data; @@ -932,7 +932,7 @@ Signed-off-by: Sebastian Andrzej Siewior if (hist_file_check_refs(file)) return; -@@ -3058,6 +3896,14 @@ static void hist_unreg_all(struct trace_ +@@ -3045,6 +3883,14 @@ static void hist_unreg_all(struct trace_ hist_data = test->private_data; list_del_rcu(&test->list); trace_event_trigger_enable_disable(file, 0); @@ -947,7 +947,7 @@ Signed-off-by: Sebastian Andrzej Siewior update_cond_flag(file); if (hist_data->enable_timestamps) tracing_set_time_stamp_abs(file->tr, false); -@@ -3076,6 +3922,8 @@ static int event_hist_trigger_func(struc +@@ -3063,6 +3909,8 @@ static int event_hist_trigger_func(struc struct hist_trigger_attrs *attrs; struct event_trigger_ops *trigger_ops; struct hist_trigger_data *hist_data; @@ -956,7 +956,7 @@ Signed-off-by: Sebastian Andrzej Siewior bool remove = false; char *trigger; int ret = 0; -@@ -3106,10 +3954,11 @@ static int event_hist_trigger_func(struc +@@ -3093,10 +3941,11 @@ static int event_hist_trigger_func(struc trigger_ops = cmd_ops->get_trigger_ops(cmd, trigger); @@ -970,7 +970,7 @@ Signed-off-by: Sebastian Andrzej Siewior trigger_data->count = -1; trigger_data->ops = trigger_ops; -@@ -3128,12 +3977,23 @@ static int event_hist_trigger_func(struc +@@ -3115,12 +3964,23 @@ static int event_hist_trigger_func(struc } if (remove) { @@ -994,7 +994,7 @@ Signed-off-by: Sebastian Andrzej Siewior ret = 0; goto out_free; } -@@ -3169,6 +4029,13 @@ static int event_hist_trigger_func(struc +@@ -3156,6 +4016,13 @@ static int event_hist_trigger_func(struc if (ret) goto out_unreg; @@ -1008,7 +1008,7 @@ Signed-off-by: Sebastian Andrzej Siewior /* Just return zero, not the number of registered triggers */ ret = 0; out: -@@ -3341,3 +4208,31 @@ static __init void unregister_trigger_hi +@@ -3328,3 +4195,31 @@ static __init void unregister_trigger_hi return ret; } diff --git a/debian/patches/features/all/rt/0025-hrtimer-Use-irqsave-irqrestore-around-__run_hrtimer.patch b/debian/patches/features/all/rt/0025-hrtimer-Use-irqsave-irqrestore-around-__run_hrtimer.patch index 44d8976e7..6ae532954 100644 --- a/debian/patches/features/all/rt/0025-hrtimer-Use-irqsave-irqrestore-around-__run_hrtimer.patch +++ b/debian/patches/features/all/rt/0025-hrtimer-Use-irqsave-irqrestore-around-__run_hrtimer.patch @@ -1,7 +1,7 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:40:03 +0200 -Subject: [PATCH 25/36] hrtimer: Use irqsave/irqrestore around __run_hrtimer() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Date: Wed, 20 Dec 2017 17:13:14 +0100 +Subject: [PATCH 25/29] hrtimer: Use irqsave/irqrestore around __run_hrtimer() +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz __run_hrtimer() is called with the hrtimer_cpu_base.lock held and interrupts disabled. Before invoking the timer callback the base lock is @@ -18,7 +18,6 @@ interrupt enabled state when called from softirq context. Suggested-by: Peter Zijlstra Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- kernel/time/hrtimer.c | 31 ++++++++++++++++++------------- diff --git a/debian/patches/features/all/rt/0025-tracing-Add-support-for-field-variables.patch b/debian/patches/features/all/rt/0025-tracing-Add-support-for-field-variables.patch index 68a7ec932..b42c63e84 100644 --- a/debian/patches/features/all/rt/0025-tracing-Add-support-for-field-variables.patch +++ b/debian/patches/features/all/rt/0025-tracing-Add-support-for-field-variables.patch @@ -1,7 +1,7 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:38:06 -0600 +Date: Thu, 21 Dec 2017 10:02:47 -0600 Subject: [PATCH 25/37] tracing: Add support for 'field variables' -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Users should be able to directly specify event fields in hist trigger 'actions' rather than being forced to explicitly create a variable for @@ -76,7 +76,7 @@ Signed-off-by: Sebastian Andrzej Siewior }; struct synth_field { -@@ -1444,6 +1460,7 @@ static struct hist_field *find_event_var +@@ -1431,6 +1447,7 @@ static struct hist_field *find_event_var struct hist_elt_data { char *comm; u64 *var_ref_vals; @@ -84,7 +84,7 @@ Signed-off-by: Sebastian Andrzej Siewior }; static u64 hist_field_var_ref(struct hist_field *hist_field, -@@ -1748,6 +1765,11 @@ static inline void save_comm(char *comm, +@@ -1735,6 +1752,11 @@ static inline void save_comm(char *comm, static void hist_elt_data_free(struct hist_elt_data *elt_data) { @@ -96,8 +96,8 @@ Signed-off-by: Sebastian Andrzej Siewior kfree(elt_data->comm); kfree(elt_data); } -@@ -1765,7 +1787,7 @@ static int hist_trigger_elt_data_alloc(s - unsigned int size = TASK_COMM_LEN + 1; +@@ -1752,7 +1774,7 @@ static int hist_trigger_elt_data_alloc(s + unsigned int size = TASK_COMM_LEN; struct hist_elt_data *elt_data; struct hist_field *key_field; - unsigned int i; @@ -105,7 +105,7 @@ Signed-off-by: Sebastian Andrzej Siewior elt_data = kzalloc(sizeof(*elt_data), GFP_KERNEL); if (!elt_data) -@@ -1784,6 +1806,18 @@ static int hist_trigger_elt_data_alloc(s +@@ -1771,6 +1793,18 @@ static int hist_trigger_elt_data_alloc(s } } @@ -124,7 +124,7 @@ Signed-off-by: Sebastian Andrzej Siewior elt->private_data = elt_data; return 0; -@@ -2486,6 +2520,470 @@ static struct hist_field *parse_expr(str +@@ -2473,6 +2507,470 @@ static struct hist_field *parse_expr(str return ERR_PTR(ret); } @@ -595,7 +595,7 @@ Signed-off-by: Sebastian Andrzej Siewior static int create_hitcount_val(struct hist_trigger_data *hist_data) { hist_data->fields[HITCOUNT_IDX] = -@@ -2941,6 +3439,16 @@ static int create_actions(struct hist_tr +@@ -2928,6 +3426,16 @@ static int create_actions(struct hist_tr return ret; } @@ -612,7 +612,7 @@ Signed-off-by: Sebastian Andrzej Siewior static void destroy_hist_data(struct hist_trigger_data *hist_data) { if (!hist_data) -@@ -2951,6 +3459,8 @@ static void destroy_hist_data(struct his +@@ -2938,6 +3446,8 @@ static void destroy_hist_data(struct his tracing_map_destroy(hist_data->map); destroy_actions(hist_data); @@ -621,7 +621,7 @@ Signed-off-by: Sebastian Andrzej Siewior kfree(hist_data); } -@@ -3087,6 +3597,8 @@ static void hist_trigger_elt_update(stru +@@ -3074,6 +3584,8 @@ static void hist_trigger_elt_update(stru tracing_map_set_var(elt, var_idx, hist_val); } } @@ -630,7 +630,7 @@ Signed-off-by: Sebastian Andrzej Siewior } static inline void add_to_key(char *compound_key, void *key, -@@ -3533,6 +4045,21 @@ static int event_hist_trigger_init(struc +@@ -3520,6 +4032,21 @@ static int event_hist_trigger_init(struc return 0; } @@ -652,7 +652,7 @@ Signed-off-by: Sebastian Andrzej Siewior static void event_hist_trigger_free(struct event_trigger_ops *ops, struct event_trigger_data *data) { -@@ -3550,6 +4077,8 @@ static void event_hist_trigger_free(stru +@@ -3537,6 +4064,8 @@ static void event_hist_trigger_free(stru remove_hist_vars(hist_data); diff --git a/debian/patches/features/all/rt/0026-hrtimer-Add-clock-bases-and-hrtimer-mode-for-soft-ir.patch b/debian/patches/features/all/rt/0026-hrtimer-Add-clock-bases-and-hrtimer-mode-for-soft-ir.patch index 1de7c5af8..75a33d0c1 100644 --- a/debian/patches/features/all/rt/0026-hrtimer-Add-clock-bases-and-hrtimer-mode-for-soft-ir.patch +++ b/debian/patches/features/all/rt/0026-hrtimer-Add-clock-bases-and-hrtimer-mode-for-soft-ir.patch @@ -1,8 +1,8 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:40:04 +0200 -Subject: [PATCH 26/36] hrtimer: Add clock bases and hrtimer mode for soft irq +Date: Wed, 20 Dec 2017 17:13:15 +0100 +Subject: [PATCH 26/29] hrtimer: Add clock bases and hrtimer mode for soft irq context -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz hrtimer callback functions are always executed in hard interrupt context. Users of hrtimer which need their timer function to be executed @@ -18,7 +18,6 @@ HRTIMER_MODE_SOFT and the matching combinations with the ABS/REL/PINNED bits and update the decoding of hrtimer_mode in tracepoints. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- include/linux/hrtimer.h | 14 ++++++++++++++ diff --git a/debian/patches/features/all/rt/0026-tracing-Add-onmatch-hist-trigger-action-support.patch b/debian/patches/features/all/rt/0026-tracing-Add-onmatch-hist-trigger-action-support.patch index 44d0923c1..11511158e 100644 --- a/debian/patches/features/all/rt/0026-tracing-Add-onmatch-hist-trigger-action-support.patch +++ b/debian/patches/features/all/rt/0026-tracing-Add-onmatch-hist-trigger-action-support.patch @@ -1,7 +1,7 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:38:07 -0600 +Date: Thu, 21 Dec 2017 10:02:48 -0600 Subject: [PATCH 26/37] tracing: Add 'onmatch' hist trigger action support -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Add an 'onmatch(matching.event).(param list)' hist trigger action which is invoked with the set of variables or @@ -126,7 +126,7 @@ Signed-off-by: Sebastian Andrzej Siewior return found; } -@@ -1439,6 +1470,37 @@ static struct hist_field *find_file_var( +@@ -1426,6 +1457,37 @@ static struct hist_field *find_file_var( return NULL; } @@ -164,7 +164,7 @@ Signed-off-by: Sebastian Andrzej Siewior static struct hist_field *find_event_var(struct hist_trigger_data *hist_data, char *system, char *event_name, -@@ -1448,6 +1510,14 @@ static struct hist_field *find_event_var +@@ -1435,6 +1497,14 @@ static struct hist_field *find_event_var struct hist_field *hist_field = NULL; struct trace_event_file *file; @@ -179,7 +179,7 @@ Signed-off-by: Sebastian Andrzej Siewior file = find_var_file(tr, system, event_name, var_name); if (!file) return NULL; -@@ -1639,11 +1709,21 @@ static void destroy_hist_trigger_attrs(s +@@ -1626,11 +1696,21 @@ static void destroy_hist_trigger_attrs(s static int parse_action(char *str, struct hist_trigger_attrs *attrs) { @@ -202,7 +202,7 @@ Signed-off-by: Sebastian Andrzej Siewior return ret; } -@@ -2648,7 +2728,7 @@ find_synthetic_field_var(struct hist_tri +@@ -2635,7 +2715,7 @@ find_synthetic_field_var(struct hist_tri * * Return: The variable created for the field. */ @@ -211,7 +211,7 @@ Signed-off-by: Sebastian Andrzej Siewior create_field_var_hist(struct hist_trigger_data *target_hist_data, char *subsys_name, char *event_name, char *field_name) { -@@ -2761,7 +2841,7 @@ create_field_var_hist(struct hist_trigge +@@ -2748,7 +2828,7 @@ create_field_var_hist(struct hist_trigge return event_var; } @@ -220,7 +220,7 @@ Signed-off-by: Sebastian Andrzej Siewior find_target_event_var(struct hist_trigger_data *hist_data, char *subsys_name, char *event_name, char *var_name) { -@@ -2932,7 +3012,7 @@ static struct field_var *create_field_va +@@ -2919,7 +2999,7 @@ static struct field_var *create_field_va * * Return: The variable created for the field. */ @@ -229,7 +229,7 @@ Signed-off-by: Sebastian Andrzej Siewior create_target_field_var(struct hist_trigger_data *target_hist_data, char *subsys_name, char *event_name, char *var_name) { -@@ -2956,6 +3036,27 @@ create_target_field_var(struct hist_trig +@@ -2943,6 +3023,27 @@ create_target_field_var(struct hist_trig return create_field_var(target_hist_data, file, var_name); } @@ -257,7 +257,7 @@ Signed-off-by: Sebastian Andrzej Siewior static void destroy_field_var(struct field_var *field_var) { if (!field_var) -@@ -2975,8 +3076,8 @@ static void destroy_field_vars(struct hi +@@ -2962,8 +3063,8 @@ static void destroy_field_vars(struct hi destroy_field_var(hist_data->field_vars[i]); } @@ -268,7 +268,7 @@ Signed-off-by: Sebastian Andrzej Siewior { hist_data->field_vars[hist_data->n_field_vars++] = field_var; -@@ -2984,6 +3085,304 @@ void save_field_var(struct hist_trigger_ +@@ -2971,6 +3072,304 @@ void save_field_var(struct hist_trigger_ hist_data->n_field_var_str++; } @@ -573,7 +573,7 @@ Signed-off-by: Sebastian Andrzej Siewior static int create_hitcount_val(struct hist_trigger_data *hist_data) { hist_data->fields[HITCOUNT_IDX] = -@@ -3408,18 +3807,39 @@ static void destroy_actions(struct hist_ +@@ -3395,18 +3794,39 @@ static void destroy_actions(struct hist_ for (i = 0; i < hist_data->n_actions; i++) { struct action_data *data = hist_data->actions[i]; @@ -614,7 +614,7 @@ Signed-off-by: Sebastian Andrzej Siewior } return ret; -@@ -3434,11 +3854,50 @@ static int create_actions(struct hist_tr +@@ -3421,11 +3841,50 @@ static int create_actions(struct hist_tr for (i = 0; i < hist_data->attrs->n_actions; i++) { data = hist_data->actions[i]; @@ -665,7 +665,7 @@ Signed-off-by: Sebastian Andrzej Siewior static void destroy_field_var_hists(struct hist_trigger_data *hist_data) { unsigned int i; -@@ -3461,6 +3920,7 @@ static void destroy_hist_data(struct his +@@ -3448,6 +3907,7 @@ static void destroy_hist_data(struct his destroy_actions(hist_data); destroy_field_vars(hist_data); destroy_field_var_hists(hist_data); @@ -673,7 +673,7 @@ Signed-off-by: Sebastian Andrzej Siewior kfree(hist_data); } -@@ -4019,6 +4479,8 @@ static int event_hist_trigger_print(stru +@@ -4006,6 +4466,8 @@ static int event_hist_trigger_print(stru } seq_printf(m, ":size=%u", (1 << hist_data->map->map_bits)); diff --git a/debian/patches/features/all/rt/0027-hrtimer-Prepare-handling-of-hard-and-softirq-based-h.patch b/debian/patches/features/all/rt/0027-hrtimer-Prepare-handling-of-hard-and-softirq-based-h.patch index 165940c4a..af4588457 100644 --- a/debian/patches/features/all/rt/0027-hrtimer-Prepare-handling-of-hard-and-softirq-based-h.patch +++ b/debian/patches/features/all/rt/0027-hrtimer-Prepare-handling-of-hard-and-softirq-based-h.patch @@ -1,8 +1,8 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:40:05 +0200 -Subject: [PATCH 27/36] hrtimer: Prepare handling of hard and softirq based +Date: Wed, 20 Dec 2017 17:13:16 +0100 +Subject: [PATCH 27/29] hrtimer: Prepare handling of hard and softirq based hrtimers -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The softirq based hrtimer can utilize most of the existing hrtimers functions, but need to operate on a different data set. @@ -12,7 +12,6 @@ can be selected. Fixup the existing callers and hand in the ACTIVE_HARD mask. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- kernel/time/hrtimer.c | 38 +++++++++++++++++++++++++++++--------- diff --git a/debian/patches/features/all/rt/0027-tracing-Add-onmax-hist-trigger-action-support.patch b/debian/patches/features/all/rt/0027-tracing-Add-onmax-hist-trigger-action-support.patch index a24161b5a..cb945abad 100644 --- a/debian/patches/features/all/rt/0027-tracing-Add-onmax-hist-trigger-action-support.patch +++ b/debian/patches/features/all/rt/0027-tracing-Add-onmax-hist-trigger-action-support.patch @@ -1,7 +1,7 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:38:08 -0600 +Date: Thu, 21 Dec 2017 10:02:49 -0600 Subject: [PATCH 27/37] tracing: Add 'onmax' hist trigger action support -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Add an 'onmax(var).save(field,...)' hist trigger action which is invoked whenever an event exceeds the current maximum. @@ -86,7 +86,7 @@ Signed-off-by: Sebastian Andrzej Siewior }; }; -@@ -1714,7 +1726,8 @@ static int parse_action(char *str, struc +@@ -1701,7 +1713,8 @@ static int parse_action(char *str, struc if (attrs->n_actions >= HIST_ACTIONS_MAX) return ret; @@ -96,7 +96,7 @@ Signed-off-by: Sebastian Andrzej Siewior attrs->action_str[attrs->n_actions] = kstrdup(str, GFP_KERNEL); if (!attrs->action_str[attrs->n_actions]) { ret = -ENOMEM; -@@ -1886,7 +1899,7 @@ static int hist_trigger_elt_data_alloc(s +@@ -1873,7 +1886,7 @@ static int hist_trigger_elt_data_alloc(s } } @@ -105,7 +105,7 @@ Signed-off-by: Sebastian Andrzej Siewior size = STR_VAR_LEN_MAX; -@@ -2907,6 +2920,15 @@ static void update_field_vars(struct his +@@ -2894,6 +2907,15 @@ static void update_field_vars(struct his hist_data->n_field_vars, 0); } @@ -121,7 +121,7 @@ Signed-off-by: Sebastian Andrzej Siewior static struct hist_field *create_var(struct hist_trigger_data *hist_data, struct trace_event_file *file, char *name, int size, const char *type) -@@ -3036,6 +3058,227 @@ create_target_field_var(struct hist_trig +@@ -3023,6 +3045,227 @@ create_target_field_var(struct hist_trig return create_field_var(target_hist_data, file, var_name); } @@ -349,7 +349,7 @@ Signed-off-by: Sebastian Andrzej Siewior static void onmatch_destroy(struct action_data *data) { unsigned int i; -@@ -3120,39 +3363,6 @@ static int check_synth_field(struct synt +@@ -3107,39 +3350,6 @@ static int check_synth_field(struct synt return 0; } @@ -389,7 +389,7 @@ Signed-off-by: Sebastian Andrzej Siewior static struct hist_field * onmatch_find_var(struct hist_trigger_data *hist_data, struct action_data *data, char *system, char *event, char *var) -@@ -3809,6 +4019,8 @@ static void destroy_actions(struct hist_ +@@ -3796,6 +4006,8 @@ static void destroy_actions(struct hist_ if (data->fn == action_trace) onmatch_destroy(data); @@ -398,7 +398,7 @@ Signed-off-by: Sebastian Andrzej Siewior else kfree(data); } -@@ -3834,6 +4046,15 @@ static int parse_actions(struct hist_tri +@@ -3821,6 +4033,15 @@ static int parse_actions(struct hist_tri break; } data->fn = action_trace; @@ -414,7 +414,7 @@ Signed-off-by: Sebastian Andrzej Siewior } else { ret = -EINVAL; break; -@@ -3859,12 +4080,48 @@ static int create_actions(struct hist_tr +@@ -3846,12 +4067,48 @@ static int create_actions(struct hist_tr ret = onmatch_create(hist_data, file, data); if (ret) return ret; @@ -463,7 +463,7 @@ Signed-off-by: Sebastian Andrzej Siewior static void print_onmatch_spec(struct seq_file *m, struct hist_trigger_data *hist_data, struct action_data *data) -@@ -3895,6 +4152,8 @@ static void print_actions_spec(struct se +@@ -3882,6 +4139,8 @@ static void print_actions_spec(struct se if (data->fn == action_trace) print_onmatch_spec(m, hist_data, data); @@ -472,7 +472,7 @@ Signed-off-by: Sebastian Andrzej Siewior } } -@@ -4276,6 +4535,8 @@ hist_trigger_entry_print(struct seq_file +@@ -4263,6 +4522,8 @@ hist_trigger_entry_print(struct seq_file } } diff --git a/debian/patches/features/all/rt/0028-hrtimer-Implement-support-for-softirq-based-hrtimers.patch b/debian/patches/features/all/rt/0028-hrtimer-Implement-support-for-softirq-based-hrtimers.patch index 4d6c4c834..f7958b03c 100644 --- a/debian/patches/features/all/rt/0028-hrtimer-Implement-support-for-softirq-based-hrtimers.patch +++ b/debian/patches/features/all/rt/0028-hrtimer-Implement-support-for-softirq-based-hrtimers.patch @@ -1,7 +1,7 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:40:06 +0200 -Subject: [PATCH 28/36] hrtimer: Implement support for softirq based hrtimers -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Date: Wed, 20 Dec 2017 17:13:17 +0100 +Subject: [PATCH 28/29] hrtimer: Implement support for softirq based hrtimers +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz hrtimer callbacks are always invoked in hard interrupt context. Several users in tree require soft interrupt context for their callbacks and @@ -32,12 +32,11 @@ processing the regular processing is resumed. Suggested-by: Thomas Gleixner Suggested-by: Peter Zijlstra Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- include/linux/hrtimer.h | 21 +++-- - kernel/time/hrtimer.c | 201 ++++++++++++++++++++++++++++++++++++++++-------- - 2 files changed, 186 insertions(+), 36 deletions(-) + kernel/time/hrtimer.c | 198 +++++++++++++++++++++++++++++++++++++++++------- + 2 files changed, 188 insertions(+), 31 deletions(-) --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -112,36 +111,17 @@ Signed-off-by: Sebastian Andrzej Siewior const enum hrtimer_mode mode) --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c -@@ -68,6 +68,9 @@ - #define HRTIMER_ACTIVE_SOFT (HRTIMER_ACTIVE_HARD << MASK_SHIFT) - #define HRTIMER_ACTIVE_ALL (HRTIMER_ACTIVE_SOFT | HRTIMER_ACTIVE_HARD) - -+/* Define for debug mode check */ -+#define HRTIMER_MODECHECK true -+ - /* - * The timer bases: - * -@@ -411,8 +414,17 @@ static inline void debug_hrtimer_init(st +@@ -411,7 +411,8 @@ static inline void debug_hrtimer_init(st debug_object_init(timer, &hrtimer_debug_descr); } -static inline void debug_hrtimer_activate(struct hrtimer *timer) +static inline void debug_hrtimer_activate(struct hrtimer *timer, -+ enum hrtimer_mode mode, -+ bool modecheck) ++ enum hrtimer_mode mode) { -+ /* -+ * Check whether the HRTIMER_MODE_SOFT bit and hrtimer.is_soft -+ * match, when a timer is started via__hrtimer_start_range_ns(). -+ */ -+ if (modecheck) -+ WARN_ON_ONCE(!(mode & HRTIMER_MODE_SOFT) ^ !timer->is_soft); -+ debug_object_activate(timer, &hrtimer_debug_descr); } - -@@ -444,8 +456,11 @@ void destroy_hrtimer_on_stack(struct hrt +@@ -444,8 +445,10 @@ void destroy_hrtimer_on_stack(struct hrt EXPORT_SYMBOL_GPL(destroy_hrtimer_on_stack); #else @@ -149,25 +129,20 @@ Signed-off-by: Sebastian Andrzej Siewior static inline void debug_hrtimer_init(struct hrtimer *timer) { } -static inline void debug_hrtimer_activate(struct hrtimer *timer) { } +static inline void debug_hrtimer_activate(struct hrtimer *timer, -+ enum hrtimer_mode mode, -+ bool modecheck) { } ++ enum hrtimer_mode mode) { } static inline void debug_hrtimer_deactivate(struct hrtimer *timer) { } #endif -@@ -458,9 +473,10 @@ debug_init(struct hrtimer *timer, clocki - } - +@@ -460,7 +463,7 @@ debug_init(struct hrtimer *timer, clocki static inline void debug_activate(struct hrtimer *timer, -- enum hrtimer_mode mode) -+ enum hrtimer_mode mode, -+ bool modecheck) + enum hrtimer_mode mode) { - debug_hrtimer_activate(timer); -+ debug_hrtimer_activate(timer, mode, modecheck); ++ debug_hrtimer_activate(timer, mode); trace_hrtimer_start(timer, mode); } -@@ -487,7 +503,6 @@ static struct hrtimer_clock_base * +@@ -487,7 +490,6 @@ static struct hrtimer_clock_base * #define for_each_active_base(base, cpu_base, active) \ while ((base = __next_base((cpu_base), &(active)))) @@ -175,7 +150,7 @@ Signed-off-by: Sebastian Andrzej Siewior static ktime_t __hrtimer_next_event_base(struct hrtimer_cpu_base *cpu_base, unsigned int active, ktime_t expires_next) -@@ -504,7 +519,10 @@ static ktime_t __hrtimer_next_event_base +@@ -504,7 +506,10 @@ static ktime_t __hrtimer_next_event_base expires = ktime_sub(hrtimer_get_expires(timer), base->offset); if (expires < expires_next) { expires_next = expires; @@ -187,7 +162,7 @@ Signed-off-by: Sebastian Andrzej Siewior } } /* -@@ -521,25 +539,42 @@ static ktime_t __hrtimer_next_event_base +@@ -521,25 +526,42 @@ static ktime_t __hrtimer_next_event_base * Recomputes cpu_base::*next_timer and returns the earliest expires_next but * does not set cpu_base::*expires_next, that is done by hrtimer_reprogram. * @@ -196,11 +171,12 @@ Signed-off-by: Sebastian Andrzej Siewior + * hrtimer_run_softirq(), hrtimer_update_softirq_timer() will re-add these bases. + * + * Therefore softirq values are those from the HRTIMER_ACTIVE_SOFT clock bases. -+ * The !softirq values are the minima across HRTIMER_ACTIVE, unless an actual ++ * The !softirq values are the minima across HRTIMER_ACTIVE_ALL, unless an actual + * softirq is pending, in which case they're the minima of HRTIMER_ACTIVE_HARD. + * * @active_mask must be one of: - * - HRTIMER_ACTIVE, +- * - HRTIMER_ACTIVE, ++ * - HRTIMER_ACTIVE_ALL, * - HRTIMER_ACTIVE_SOFT, or * - HRTIMER_ACTIVE_HARD. */ @@ -236,7 +212,7 @@ Signed-off-by: Sebastian Andrzej Siewior static inline ktime_t hrtimer_update_base(struct hrtimer_cpu_base *base) { -@@ -547,8 +582,14 @@ static inline ktime_t hrtimer_update_bas +@@ -547,8 +569,14 @@ static inline ktime_t hrtimer_update_bas ktime_t *offs_boot = &base->clock_base[HRTIMER_BASE_BOOTTIME].offset; ktime_t *offs_tai = &base->clock_base[HRTIMER_BASE_TAI].offset; @@ -252,7 +228,7 @@ Signed-off-by: Sebastian Andrzej Siewior } /* -@@ -575,7 +616,23 @@ hrtimer_force_reprogram(struct hrtimer_c +@@ -575,7 +603,23 @@ hrtimer_force_reprogram(struct hrtimer_c { ktime_t expires_next; @@ -277,7 +253,7 @@ Signed-off-by: Sebastian Andrzej Siewior if (skip_equal && expires_next == cpu_base->expires_next) return; -@@ -702,7 +759,7 @@ static inline void retrigger_next_event( +@@ -702,7 +746,7 @@ static inline void retrigger_next_event( * * Called with interrupts disabled and base->cpu_base.lock held */ @@ -286,7 +262,7 @@ Signed-off-by: Sebastian Andrzej Siewior { struct hrtimer_cpu_base *cpu_base = this_cpu_ptr(&hrtimer_bases); struct hrtimer_clock_base *base = timer->base; -@@ -711,6 +768,28 @@ static void hrtimer_reprogram(struct hrt +@@ -711,6 +755,37 @@ static void hrtimer_reprogram(struct hrt WARN_ON_ONCE(hrtimer_get_expires_tv64(timer) < 0); /* @@ -297,16 +273,25 @@ Signed-off-by: Sebastian Andrzej Siewior + expires = 0; + + if (timer->is_soft) { -+ if (cpu_base->softirq_activated) ++ /* ++ * soft hrtimer could be started on a remote CPU. In this ++ * case softirq_expires_next needs to be updated on the ++ * remote CPU. The soft hrtimer will not expire before the ++ * first hard hrtimer on the remote CPU - ++ * hrtimer_check_target() prevents this case. ++ */ ++ struct hrtimer_cpu_base *timer_cpu_base = base->cpu_base; ++ ++ if (timer_cpu_base->softirq_activated) + return; + -+ if (!ktime_before(expires, cpu_base->softirq_expires_next)) ++ if (!ktime_before(expires, timer_cpu_base->softirq_expires_next)) + return; + -+ cpu_base->softirq_next_timer = timer; -+ cpu_base->softirq_expires_next = expires; ++ timer_cpu_base->softirq_next_timer = timer; ++ timer_cpu_base->softirq_expires_next = expires; + -+ if (!ktime_before(expires, cpu_base->expires_next) || ++ if (!ktime_before(expires, timer_cpu_base->expires_next) || + !reprogram) + return; + } @@ -315,7 +300,7 @@ Signed-off-by: Sebastian Andrzej Siewior * If the timer is not on the current cpu, we cannot reprogram * the other cpus clock event device. */ -@@ -727,13 +806,6 @@ static void hrtimer_reprogram(struct hrt +@@ -727,13 +802,6 @@ static void hrtimer_reprogram(struct hrt if (cpu_base->in_hrtirq) return; @@ -329,20 +314,7 @@ Signed-off-by: Sebastian Andrzej Siewior if (expires >= cpu_base->expires_next) return; -@@ -868,9 +940,10 @@ EXPORT_SYMBOL_GPL(hrtimer_forward); - */ - static int enqueue_hrtimer(struct hrtimer *timer, - struct hrtimer_clock_base *base, -- enum hrtimer_mode mode) -+ enum hrtimer_mode mode, -+ bool modecheck) - { -- debug_activate(timer, mode); -+ debug_activate(timer, mode, modecheck); - - base->cpu_base->active_bases |= 1 << base->index; - -@@ -961,6 +1034,31 @@ static inline ktime_t hrtimer_update_low +@@ -961,6 +1029,31 @@ static inline ktime_t hrtimer_update_low return tim; } @@ -361,7 +333,7 @@ Signed-off-by: Sebastian Andrzej Siewior + * hrtimer expires at the same time than the next hard + * hrtimer. cpu_base->softirq_expires_next needs to be updated! + */ -+ if (!reprogram || expires == KTIME_MAX) ++ if (expires == KTIME_MAX) + return; + + /* @@ -374,16 +346,14 @@ Signed-off-by: Sebastian Andrzej Siewior static int __hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim, u64 delta_ns, const enum hrtimer_mode mode, struct hrtimer_clock_base *base) -@@ -980,7 +1078,7 @@ static int __hrtimer_start_range_ns(stru - /* Switch the timer base, if necessary: */ - new_base = switch_hrtimer_base(timer, base, mode & HRTIMER_MODE_PINNED); +@@ -982,13 +1075,15 @@ static int __hrtimer_start_range_ns(stru -- return enqueue_hrtimer(timer, new_base, mode); -+ return enqueue_hrtimer(timer, new_base, mode, HRTIMER_MODECHECK); + return enqueue_hrtimer(timer, new_base, mode); } ++ /** * hrtimer_start_range_ns - (re)start an hrtimer -@@ -988,7 +1086,8 @@ static int __hrtimer_start_range_ns(stru + * @timer: the timer to be added * @tim: expiry time * @delta_ns: "slack" range for the timer * @mode: timer mode: absolute (HRTIMER_MODE_ABS) or @@ -393,7 +363,16 @@ Signed-off-by: Sebastian Andrzej Siewior */ void hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim, u64 delta_ns, const enum hrtimer_mode mode) -@@ -999,7 +1098,7 @@ void hrtimer_start_range_ns(struct hrtim +@@ -996,10 +1091,16 @@ void hrtimer_start_range_ns(struct hrtim + struct hrtimer_clock_base *base; + unsigned long flags; + ++ /* ++ * Check whether the HRTIMER_MODE_SOFT bit and hrtimer.is_soft ++ * match. ++ */ ++ WARN_ON_ONCE(!(mode & HRTIMER_MODE_SOFT) ^ !timer->is_soft); ++ base = lock_hrtimer_base(timer, &flags); if (__hrtimer_start_range_ns(timer, tim, delta_ns, mode, base)) @@ -402,7 +381,7 @@ Signed-off-by: Sebastian Andrzej Siewior unlock_hrtimer_base(timer, &flags); } -@@ -1098,7 +1197,7 @@ u64 hrtimer_get_next_event(void) +@@ -1098,7 +1199,7 @@ u64 hrtimer_get_next_event(void) raw_spin_lock_irqsave(&cpu_base->lock, flags); if (!__hrtimer_hres_active(cpu_base)) @@ -411,17 +390,7 @@ Signed-off-by: Sebastian Andrzej Siewior raw_spin_unlock_irqrestore(&cpu_base->lock, flags); -@@ -1256,7 +1355,8 @@ static void __run_hrtimer(struct hrtimer - */ - if (restart != HRTIMER_NORESTART && - !(timer->state & HRTIMER_STATE_ENQUEUED)) -- enqueue_hrtimer(timer, base, HRTIMER_MODE_ABS); -+ enqueue_hrtimer(timer, base, HRTIMER_MODE_ABS, -+ !HRTIMER_MODECHECK); - - /* - * Separate the ->running assignment from the ->state assignment. -@@ -1308,6 +1408,23 @@ static void __hrtimer_run_queues(struct +@@ -1308,6 +1409,23 @@ static void __hrtimer_run_queues(struct } } @@ -445,7 +414,7 @@ Signed-off-by: Sebastian Andrzej Siewior #ifdef CONFIG_HIGH_RES_TIMERS /* -@@ -1338,10 +1455,16 @@ void hrtimer_interrupt(struct clock_even +@@ -1338,10 +1456,16 @@ void hrtimer_interrupt(struct clock_even */ cpu_base->expires_next = KTIME_MAX; @@ -463,7 +432,7 @@ Signed-off-by: Sebastian Andrzej Siewior /* * Store the new expiry value so the migration code can verify * against it. -@@ -1445,6 +1568,13 @@ void hrtimer_run_queues(void) +@@ -1445,6 +1569,13 @@ void hrtimer_run_queues(void) raw_spin_lock_irqsave(&cpu_base->lock, flags); now = hrtimer_update_base(cpu_base); @@ -477,7 +446,7 @@ Signed-off-by: Sebastian Andrzej Siewior __hrtimer_run_queues(cpu_base, now, flags, HRTIMER_ACTIVE_HARD); raw_spin_unlock_irqrestore(&cpu_base->lock, flags); } -@@ -1626,6 +1756,7 @@ int hrtimers_prepare_cpu(unsigned int cp +@@ -1626,6 +1757,7 @@ int hrtimers_prepare_cpu(unsigned int cp cpu_base->cpu = cpu; cpu_base->hres_active = 0; cpu_base->expires_next = KTIME_MAX; @@ -485,17 +454,20 @@ Signed-off-by: Sebastian Andrzej Siewior return 0; } -@@ -1657,7 +1788,8 @@ static void migrate_hrtimer_list(struct - * sort out already expired timers and reprogram the - * event device. - */ -- enqueue_hrtimer(timer, new_base, HRTIMER_MODE_ABS); -+ enqueue_hrtimer(timer, new_base, HRTIMER_MODE_ABS, -+ !HRTIMER_MODECHECK); - } - } +@@ -1669,6 +1801,12 @@ int hrtimers_dead_cpu(unsigned int scpu) + BUG_ON(cpu_online(scpu)); + tick_cancel_sched_timer(scpu); -@@ -1684,6 +1816,12 @@ int hrtimers_dead_cpu(unsigned int scpu) ++ /* ++ * this BH disable ensures that raise_softirq_irqoff() does ++ * not wakeup ksoftirqd (and acquire the pi-lock) while ++ * holding the cpu_base lock ++ */ ++ local_bh_disable(); + local_irq_disable(); + old_base = &per_cpu(hrtimer_bases, scpu); + new_base = this_cpu_ptr(&hrtimer_bases); +@@ -1684,12 +1822,19 @@ int hrtimers_dead_cpu(unsigned int scpu) &new_base->clock_base[i]); } @@ -508,7 +480,14 @@ Signed-off-by: Sebastian Andrzej Siewior raw_spin_unlock(&old_base->lock); raw_spin_unlock(&new_base->lock); -@@ -1698,6 +1836,7 @@ int hrtimers_dead_cpu(unsigned int scpu) + /* Check, if we got expired work to do */ + __hrtimer_peek_ahead_timers(); + local_irq_enable(); ++ local_bh_enable(); + return 0; + } + +@@ -1698,6 +1843,7 @@ int hrtimers_dead_cpu(unsigned int scpu) void __init hrtimers_init(void) { hrtimers_prepare_cpu(smp_processor_id()); diff --git a/debian/patches/features/all/rt/0028-tracing-Allow-whitespace-to-surround-hist-trigger-fi.patch b/debian/patches/features/all/rt/0028-tracing-Allow-whitespace-to-surround-hist-trigger-fi.patch index 919b409ad..3deac7de8 100644 --- a/debian/patches/features/all/rt/0028-tracing-Allow-whitespace-to-surround-hist-trigger-fi.patch +++ b/debian/patches/features/all/rt/0028-tracing-Allow-whitespace-to-surround-hist-trigger-fi.patch @@ -1,8 +1,8 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:38:09 -0600 +Date: Thu, 21 Dec 2017 10:02:50 -0600 Subject: [PATCH 28/37] tracing: Allow whitespace to surround hist trigger filter -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The existing code only allows for one space before and after the 'if' specifying the filter for a hist trigger. Add code to make that more @@ -19,7 +19,7 @@ Signed-off-by: Sebastian Andrzej Siewior --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c -@@ -5177,7 +5177,7 @@ static int event_hist_trigger_func(struc +@@ -5164,7 +5164,7 @@ static int event_hist_trigger_func(struc struct synth_event *se; const char *se_name; bool remove = false; @@ -28,7 +28,7 @@ Signed-off-by: Sebastian Andrzej Siewior int ret = 0; if (!param) -@@ -5186,10 +5186,37 @@ static int event_hist_trigger_func(struc +@@ -5173,10 +5173,37 @@ static int event_hist_trigger_func(struc if (glob[0] == '!') remove = true; diff --git a/debian/patches/features/all/rt/0029-hrtimer-Implement-SOFT-HARD-clock-base-selection.patch b/debian/patches/features/all/rt/0029-hrtimer-Implement-SOFT-HARD-clock-base-selection.patch index 193413d29..b1608f28a 100644 --- a/debian/patches/features/all/rt/0029-hrtimer-Implement-SOFT-HARD-clock-base-selection.patch +++ b/debian/patches/features/all/rt/0029-hrtimer-Implement-SOFT-HARD-clock-base-selection.patch @@ -1,7 +1,7 @@ From: Anna-Maria Gleixner -Date: Sun, 22 Oct 2017 23:40:07 +0200 -Subject: [PATCH 29/36] hrtimer: Implement SOFT/HARD clock base selection -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Date: Wed, 20 Dec 2017 17:13:18 +0100 +Subject: [PATCH 29/29] hrtimer: Implement SOFT/HARD clock base selection +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz All prerequisites to handle hrtimers for expiry in either hard or soft interrupt context are in place. @@ -10,7 +10,6 @@ Add the missing bit in hrtimer_init() which associates the timer to the hard or the soft irq clock base. Signed-off-by: Anna-Maria Gleixner -Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior --- kernel/time/hrtimer.c | 15 +++++++++++---- @@ -18,7 +17,7 @@ Signed-off-by: Sebastian Andrzej Siewior --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c -@@ -1220,8 +1220,9 @@ static inline int hrtimer_clockid_to_bas +@@ -1222,8 +1222,9 @@ static inline int hrtimer_clockid_to_bas static void __hrtimer_init(struct hrtimer *timer, clockid_t clock_id, enum hrtimer_mode mode) { @@ -29,7 +28,7 @@ Signed-off-by: Sebastian Andrzej Siewior memset(timer, 0, sizeof(struct hrtimer)); -@@ -1235,7 +1236,8 @@ static void __hrtimer_init(struct hrtime +@@ -1237,7 +1238,8 @@ static void __hrtimer_init(struct hrtime if (clock_id == CLOCK_REALTIME && mode & HRTIMER_MODE_REL) clock_id = CLOCK_MONOTONIC; @@ -39,7 +38,7 @@ Signed-off-by: Sebastian Andrzej Siewior timer->base = &cpu_base->clock_base[base]; timerqueue_init(&timer->node); } -@@ -1244,8 +1246,13 @@ static void __hrtimer_init(struct hrtime +@@ -1246,8 +1248,13 @@ static void __hrtimer_init(struct hrtime * hrtimer_init - initialize a timer to the given clock * @timer: the timer to be initialized * @clock_id: the clock to be used diff --git a/debian/patches/features/all/rt/0029-tracing-Add-cpu-field-for-hist-triggers.patch b/debian/patches/features/all/rt/0029-tracing-Add-cpu-field-for-hist-triggers.patch index b7b05159e..d713675f1 100644 --- a/debian/patches/features/all/rt/0029-tracing-Add-cpu-field-for-hist-triggers.patch +++ b/debian/patches/features/all/rt/0029-tracing-Add-cpu-field-for-hist-triggers.patch @@ -1,7 +1,7 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:38:10 -0600 +Date: Thu, 21 Dec 2017 10:02:51 -0600 Subject: [PATCH 29/37] tracing: Add cpu field for hist triggers -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz A common key to use in a histogram is the cpuid - add a new cpu 'synthetic' field named 'cpu' for that purpose. @@ -64,7 +64,7 @@ Signed-off-by: Sebastian Andrzej Siewior static struct hist_field * check_field_for_var_ref(struct hist_field *hist_field, struct hist_trigger_data *var_data, -@@ -1619,6 +1630,8 @@ static const char *hist_field_name(struc +@@ -1606,6 +1617,8 @@ static const char *hist_field_name(struc field_name = hist_field_name(field->operands[0], ++level); else if (field->flags & HIST_FIELD_FL_TIMESTAMP) field_name = "common_timestamp"; @@ -73,7 +73,7 @@ Signed-off-by: Sebastian Andrzej Siewior else if (field->flags & HIST_FIELD_FL_EXPR || field->flags & HIST_FIELD_FL_VAR_REF) { if (field->system) { -@@ -2124,6 +2137,15 @@ static struct hist_field *create_hist_fi +@@ -2111,6 +2124,15 @@ static struct hist_field *create_hist_fi goto out; } @@ -89,7 +89,7 @@ Signed-off-by: Sebastian Andrzej Siewior if (WARN_ON_ONCE(!field)) goto out; -@@ -2358,7 +2380,9 @@ parse_field(struct hist_trigger_data *hi +@@ -2345,7 +2367,9 @@ parse_field(struct hist_trigger_data *hi hist_data->enable_timestamps = true; if (*flags & HIST_FIELD_FL_TIMESTAMP_USECS) hist_data->attrs->ts_in_usecs = true; @@ -100,7 +100,7 @@ Signed-off-by: Sebastian Andrzej Siewior field = trace_find_event_field(file->event_call, field_name); if (!field || !field->size) { field = ERR_PTR(-EINVAL); -@@ -4634,6 +4658,8 @@ static void hist_field_print(struct seq_ +@@ -4621,6 +4645,8 @@ static void hist_field_print(struct seq_ if (hist_field->flags & HIST_FIELD_FL_TIMESTAMP) seq_puts(m, "common_timestamp"); diff --git a/debian/patches/features/all/rt/0030-can-bcm-Replace-hrtimer_tasklet-with-softirq-based-h.patch b/debian/patches/features/all/rt/0030-can-bcm-Replace-hrtimer_tasklet-with-softirq-based-h.patch index 67bd3b4f9..4012b5ee6 100644 --- a/debian/patches/features/all/rt/0030-can-bcm-Replace-hrtimer_tasklet-with-softirq-based-h.patch +++ b/debian/patches/features/all/rt/0030-can-bcm-Replace-hrtimer_tasklet-with-softirq-based-h.patch @@ -2,7 +2,7 @@ From: Thomas Gleixner Date: Thu, 23 Nov 2017 16:39:11 +0100 Subject: [PATCH 30/36] can/bcm: Replace hrtimer_tasklet with softirq based hrtimer -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Switch the timer to HRTIMER_MODE_SOFT, which executed the timer callback in softirq context and remove the hrtimer_tasklet. diff --git a/debian/patches/features/all/rt/0030-tracing-Add-hist-trigger-support-for-variable-refere.patch b/debian/patches/features/all/rt/0030-tracing-Add-hist-trigger-support-for-variable-refere.patch index 2f2a86b44..2056d74fd 100644 --- a/debian/patches/features/all/rt/0030-tracing-Add-hist-trigger-support-for-variable-refere.patch +++ b/debian/patches/features/all/rt/0030-tracing-Add-hist-trigger-support-for-variable-refere.patch @@ -1,8 +1,8 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:38:11 -0600 +Date: Thu, 21 Dec 2017 10:02:52 -0600 Subject: [PATCH 30/37] tracing: Add hist trigger support for variable reference aliases -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Add support for alias=$somevar where alias can be used as onmatch.xxx($alias). @@ -37,7 +37,7 @@ Signed-off-by: Sebastian Andrzej Siewior }; struct var_defs { -@@ -1626,7 +1627,8 @@ static const char *hist_field_name(struc +@@ -1613,7 +1614,8 @@ static const char *hist_field_name(struc if (field->field) field_name = field->field->name; @@ -47,7 +47,7 @@ Signed-off-by: Sebastian Andrzej Siewior field_name = hist_field_name(field->operands[0], ++level); else if (field->flags & HIST_FIELD_FL_TIMESTAMP) field_name = "common_timestamp"; -@@ -2095,7 +2097,7 @@ static struct hist_field *create_hist_fi +@@ -2082,7 +2084,7 @@ static struct hist_field *create_hist_fi hist_field->hist_data = hist_data; @@ -56,7 +56,7 @@ Signed-off-by: Sebastian Andrzej Siewior goto out; /* caller will populate */ if (flags & HIST_FIELD_FL_VAR_REF) { -@@ -2395,6 +2397,28 @@ parse_field(struct hist_trigger_data *hi +@@ -2382,6 +2384,28 @@ parse_field(struct hist_trigger_data *hi return field; } @@ -85,7 +85,7 @@ Signed-off-by: Sebastian Andrzej Siewior struct hist_field *parse_atom(struct hist_trigger_data *hist_data, struct trace_event_file *file, char *str, unsigned long *flags, char *var_name) -@@ -2428,6 +2452,13 @@ struct hist_field *parse_atom(struct his +@@ -2415,6 +2439,13 @@ struct hist_field *parse_atom(struct his if (hist_field) { hist_data->var_refs[hist_data->n_var_refs] = hist_field; hist_field->var_ref_idx = hist_data->n_var_refs++; @@ -99,7 +99,7 @@ Signed-off-by: Sebastian Andrzej Siewior return hist_field; } } else -@@ -2532,6 +2563,26 @@ static int check_expr_operands(struct hi +@@ -2519,6 +2550,26 @@ static int check_expr_operands(struct hi unsigned long operand1_flags = operand1->flags; unsigned long operand2_flags = operand2->flags; @@ -126,7 +126,7 @@ Signed-off-by: Sebastian Andrzej Siewior if ((operand1_flags & HIST_FIELD_FL_TIMESTAMP_USECS) != (operand2_flags & HIST_FIELD_FL_TIMESTAMP_USECS)) return -EINVAL; -@@ -4661,7 +4712,8 @@ static void hist_field_print(struct seq_ +@@ -4648,7 +4699,8 @@ static void hist_field_print(struct seq_ else if (hist_field->flags & HIST_FIELD_FL_CPU) seq_puts(m, "cpu"); else if (field_name) { diff --git a/debian/patches/features/all/rt/0031-mac80211_hwsim-Replace-hrtimer-tasklet-with-softirq-.patch b/debian/patches/features/all/rt/0031-mac80211_hwsim-Replace-hrtimer-tasklet-with-softirq-.patch index ed0579bc5..a69fce133 100644 --- a/debian/patches/features/all/rt/0031-mac80211_hwsim-Replace-hrtimer-tasklet-with-softirq-.patch +++ b/debian/patches/features/all/rt/0031-mac80211_hwsim-Replace-hrtimer-tasklet-with-softirq-.patch @@ -2,7 +2,7 @@ From: Thomas Gleixner Date: Thu, 23 Nov 2017 16:39:12 +0100 Subject: [PATCH 31/36] mac80211_hwsim: Replace hrtimer tasklet with softirq hrtimer -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Switch the timer to HRTIMER_MODE_SOFT, which executed the timer callback in softirq context and remove the hrtimer_tasklet. diff --git a/debian/patches/features/all/rt/0031-tracing-Add-last-error-error-facility-for-hist-trigg.patch b/debian/patches/features/all/rt/0031-tracing-Add-last-error-error-facility-for-hist-trigg.patch index bfaf54961..41f212de9 100644 --- a/debian/patches/features/all/rt/0031-tracing-Add-last-error-error-facility-for-hist-trigg.patch +++ b/debian/patches/features/all/rt/0031-tracing-Add-last-error-error-facility-for-hist-trigg.patch @@ -1,8 +1,8 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:38:12 -0600 +Date: Thu, 21 Dec 2017 10:02:53 -0600 Subject: [PATCH 31/37] tracing: Add 'last error' error facility for hist triggers -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz With the addition of variables and actions, it's become necessary to provide more detailed error information to users about syntax errors. @@ -27,8 +27,8 @@ Signed-off-by: Tom Zanussi Signed-off-by: Sebastian Andrzej Siewior --- Documentation/trace/histogram.txt | 20 ++++ - kernel/trace/trace_events_hist.c | 156 +++++++++++++++++++++++++++++++++++--- - 2 files changed, 164 insertions(+), 12 deletions(-) + kernel/trace/trace_events_hist.c | 159 ++++++++++++++++++++++++++++++++++---- + 2 files changed, 166 insertions(+), 13 deletions(-) --- a/Documentation/trace/histogram.txt +++ b/Documentation/trace/histogram.txt @@ -127,15 +127,19 @@ Signed-off-by: Sebastian Andrzej Siewior static LIST_HEAD(synth_event_list); static DEFINE_MUTEX(synth_event_mutex); -@@ -1455,6 +1514,7 @@ static struct trace_event_file *find_var - if (!system || !event_name) { - if (find_var(var_hist_data, file, var_name)) { - if (found) { -+ hist_err_event("Variable name not unique, need to use fully qualified name (subsys.event.var) for variable: ", system, event_name, var_name); - return NULL; - } +@@ -1452,8 +1511,10 @@ static struct trace_event_file *find_var + continue; -@@ -1515,6 +1575,7 @@ find_match_var(struct hist_trigger_data + if (find_var_field(var_hist_data, var_name)) { +- if (found) ++ if (found) { ++ hist_err_event("Variable name not unique, need to use fully qualified name (subsys.event.var) for variable: ", system, event_name, var_name); + return NULL; ++ } + + found = file; + } +@@ -1502,6 +1563,7 @@ find_match_var(struct hist_trigger_data hist_field = find_file_var(file, var_name); if (hist_field) { if (found) { @@ -143,7 +147,7 @@ Signed-off-by: Sebastian Andrzej Siewior return ERR_PTR(-EINVAL); } -@@ -1798,6 +1859,7 @@ static int parse_assignment(char *str, s +@@ -1785,6 +1847,7 @@ static int parse_assignment(char *str, s char *assignment; if (attrs->n_assignments == TRACING_MAP_VARS_MAX) { @@ -151,7 +155,7 @@ Signed-off-by: Sebastian Andrzej Siewior ret = -EINVAL; goto out; } -@@ -2340,6 +2402,10 @@ static struct hist_field *parse_var_ref( +@@ -2327,6 +2390,10 @@ static struct hist_field *parse_var_ref( if (var_field) ref_field = create_var_ref(var_field, system, event_name); @@ -162,7 +166,7 @@ Signed-off-by: Sebastian Andrzej Siewior return ref_field; } -@@ -2584,8 +2650,10 @@ static int check_expr_operands(struct hi +@@ -2571,8 +2638,10 @@ static int check_expr_operands(struct hi } if ((operand1_flags & HIST_FIELD_FL_TIMESTAMP_USECS) != @@ -174,7 +178,7 @@ Signed-off-by: Sebastian Andrzej Siewior return 0; } -@@ -2831,12 +2899,17 @@ create_field_var_hist(struct hist_trigge +@@ -2818,12 +2887,17 @@ create_field_var_hist(struct hist_trigge char *cmd; int ret; @@ -193,7 +197,7 @@ Signed-off-by: Sebastian Andrzej Siewior ret = PTR_ERR(file); return ERR_PTR(ret); } -@@ -2848,8 +2921,11 @@ create_field_var_hist(struct hist_trigge +@@ -2835,8 +2909,11 @@ create_field_var_hist(struct hist_trigge * yet a registered histogram so we can't use that. */ hist_data = find_compatible_hist(target_hist_data, file); @@ -206,7 +210,7 @@ Signed-off-by: Sebastian Andrzej Siewior /* See if a synthetic field variable has already been created */ event_var = find_synthetic_field_var(target_hist_data, subsys_name, -@@ -2908,6 +2984,8 @@ create_field_var_hist(struct hist_trigge +@@ -2895,6 +2972,8 @@ create_field_var_hist(struct hist_trigge kfree(cmd); kfree(var_hist->cmd); kfree(var_hist); @@ -215,7 +219,7 @@ Signed-off-by: Sebastian Andrzej Siewior return ERR_PTR(ret); } -@@ -2919,6 +2997,8 @@ create_field_var_hist(struct hist_trigge +@@ -2906,6 +2985,8 @@ create_field_var_hist(struct hist_trigge if (IS_ERR_OR_NULL(event_var)) { kfree(var_hist->cmd); kfree(var_hist); @@ -224,7 +228,7 @@ Signed-off-by: Sebastian Andrzej Siewior return ERR_PTR(-EINVAL); } -@@ -3055,18 +3135,21 @@ static struct field_var *create_field_va +@@ -3042,18 +3123,21 @@ static struct field_var *create_field_va int ret = 0; if (hist_data->n_field_vars >= SYNTH_FIELDS_MAX) { @@ -246,7 +250,7 @@ Signed-off-by: Sebastian Andrzej Siewior kfree(val); ret = PTR_ERR(var); goto err; -@@ -3209,13 +3292,17 @@ static int onmax_create(struct hist_trig +@@ -3196,13 +3280,17 @@ static int onmax_create(struct hist_trig int ret = 0; onmax_var_str = data->onmax.var_str; @@ -266,7 +270,7 @@ Signed-off-by: Sebastian Andrzej Siewior flags = HIST_FIELD_FL_VAR_REF; ref_field = create_hist_field(hist_data, NULL, flags, NULL); -@@ -3235,6 +3322,7 @@ static int onmax_create(struct hist_trig +@@ -3222,6 +3310,7 @@ static int onmax_create(struct hist_trig data->onmax.max_var_ref_idx = var_ref_idx; max_var = create_var(hist_data, file, "max", sizeof(u64), "u64"); if (IS_ERR(max_var)) { @@ -274,7 +278,7 @@ Signed-off-by: Sebastian Andrzej Siewior ret = PTR_ERR(max_var); goto out; } -@@ -3249,6 +3337,7 @@ static int onmax_create(struct hist_trig +@@ -3236,6 +3325,7 @@ static int onmax_create(struct hist_trig field_var = create_target_field_var(hist_data, NULL, NULL, param); if (IS_ERR(field_var)) { @@ -282,7 +286,7 @@ Signed-off-by: Sebastian Andrzej Siewior ret = PTR_ERR(field_var); kfree(param); goto out; -@@ -3281,6 +3370,7 @@ static int parse_action_params(char *par +@@ -3268,6 +3358,7 @@ static int parse_action_params(char *par param = strstrip(param); if (strlen(param) < 2) { @@ -290,7 +294,7 @@ Signed-off-by: Sebastian Andrzej Siewior ret = -EINVAL; goto out; } -@@ -3456,6 +3546,9 @@ onmatch_find_var(struct hist_trigger_dat +@@ -3443,6 +3534,9 @@ onmatch_find_var(struct hist_trigger_dat hist_field = find_event_var(hist_data, system, event, var); } @@ -300,7 +304,7 @@ Signed-off-by: Sebastian Andrzej Siewior return hist_field; } -@@ -3523,6 +3616,7 @@ static int onmatch_create(struct hist_tr +@@ -3510,6 +3604,7 @@ static int onmatch_create(struct hist_tr mutex_lock(&synth_event_mutex); event = find_synth_event(data->onmatch.synth_event_name); if (!event) { @@ -308,7 +312,7 @@ Signed-off-by: Sebastian Andrzej Siewior mutex_unlock(&synth_event_mutex); return -EINVAL; } -@@ -3582,12 +3676,15 @@ static int onmatch_create(struct hist_tr +@@ -3569,12 +3664,15 @@ static int onmatch_create(struct hist_tr continue; } @@ -324,7 +328,7 @@ Signed-off-by: Sebastian Andrzej Siewior ret = -EINVAL; goto err; } -@@ -3617,15 +3714,22 @@ static struct action_data *onmatch_parse +@@ -3604,15 +3702,22 @@ static struct action_data *onmatch_parse return ERR_PTR(-ENOMEM); match_event = strsep(&str, ")"); @@ -350,7 +354,7 @@ Signed-off-by: Sebastian Andrzej Siewior data->onmatch.match_event = kstrdup(match_event, GFP_KERNEL); if (!data->onmatch.match_event) { -@@ -3640,12 +3744,16 @@ static struct action_data *onmatch_parse +@@ -3627,12 +3732,16 @@ static struct action_data *onmatch_parse } strsep(&str, "."); @@ -369,7 +373,7 @@ Signed-off-by: Sebastian Andrzej Siewior data->onmatch.synth_event_name = kstrdup(synth_event_name, GFP_KERNEL); if (!data->onmatch.synth_event_name) { -@@ -3654,8 +3762,10 @@ static struct action_data *onmatch_parse +@@ -3641,8 +3750,10 @@ static struct action_data *onmatch_parse } params = strsep(&str, ")"); @@ -381,7 +385,7 @@ Signed-off-by: Sebastian Andrzej Siewior ret = parse_action_params(params, data); if (ret) -@@ -3730,7 +3840,9 @@ static int create_var_field(struct hist_ +@@ -3717,7 +3828,9 @@ static int create_var_field(struct hist_ if (WARN_ON(val_idx >= TRACING_MAP_VALS_MAX + TRACING_MAP_VARS_MAX)) return -EINVAL; @@ -391,7 +395,7 @@ Signed-off-by: Sebastian Andrzej Siewior return -EINVAL; } -@@ -3811,6 +3923,7 @@ static int create_key_field(struct hist_ +@@ -3798,6 +3911,7 @@ static int create_key_field(struct hist_ } if (hist_field->flags & HIST_FIELD_FL_VAR_REF) { @@ -399,7 +403,7 @@ Signed-off-by: Sebastian Andrzej Siewior destroy_hist_field(hist_field, 0); ret = -EINVAL; goto out; -@@ -3924,11 +4037,13 @@ static int parse_var_defs(struct hist_tr +@@ -3911,11 +4025,13 @@ static int parse_var_defs(struct hist_tr var_name = strsep(&field_str, "="); if (!var_name || !field_str) { @@ -413,7 +417,7 @@ Signed-off-by: Sebastian Andrzej Siewior ret = -EINVAL; goto free; } -@@ -4682,6 +4797,11 @@ static int hist_show(struct seq_file *m, +@@ -4669,6 +4785,11 @@ static int hist_show(struct seq_file *m, hist_trigger_show(m, data, n++); } @@ -425,7 +429,7 @@ Signed-off-by: Sebastian Andrzej Siewior out_unlock: mutex_unlock(&event_mutex); -@@ -5046,6 +5166,7 @@ static int hist_register_trigger(char *g +@@ -5033,6 +5154,7 @@ static int hist_register_trigger(char *g if (named_data) { if (!hist_trigger_match(data, named_data, named_data, true)) { @@ -433,7 +437,7 @@ Signed-off-by: Sebastian Andrzej Siewior ret = -EINVAL; goto out; } -@@ -5065,13 +5186,16 @@ static int hist_register_trigger(char *g +@@ -5052,13 +5174,16 @@ static int hist_register_trigger(char *g test->paused = false; else if (hist_data->attrs->clear) hist_clear(test); @@ -451,7 +455,7 @@ Signed-off-by: Sebastian Andrzej Siewior ret = -ENOENT; goto out; } -@@ -5258,6 +5382,11 @@ static int event_hist_trigger_func(struc +@@ -5245,6 +5370,11 @@ static int event_hist_trigger_func(struc char *trigger, *p; int ret = 0; @@ -463,7 +467,7 @@ Signed-off-by: Sebastian Andrzej Siewior if (!param) return -EINVAL; -@@ -5396,6 +5525,9 @@ static int event_hist_trigger_func(struc +@@ -5383,6 +5513,9 @@ static int event_hist_trigger_func(struc /* Just return zero, not the number of registered triggers */ ret = 0; out: diff --git a/debian/patches/features/all/rt/0032-tracing-Add-inter-event-hist-trigger-Documentation.patch b/debian/patches/features/all/rt/0032-tracing-Add-inter-event-hist-trigger-Documentation.patch index 9421e641b..d4efa60aa 100644 --- a/debian/patches/features/all/rt/0032-tracing-Add-inter-event-hist-trigger-Documentation.patch +++ b/debian/patches/features/all/rt/0032-tracing-Add-inter-event-hist-trigger-Documentation.patch @@ -1,7 +1,7 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:38:13 -0600 +Date: Thu, 21 Dec 2017 10:02:54 -0600 Subject: [PATCH 32/37] tracing: Add inter-event hist trigger Documentation -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Add background and details on inter-event hist triggers, including hist variables, synthetic events, and actions. diff --git a/debian/patches/features/all/rt/0032-xfrm-Replace-hrtimer-tasklet-with-softirq-hrtimer.patch b/debian/patches/features/all/rt/0032-xfrm-Replace-hrtimer-tasklet-with-softirq-hrtimer.patch index 3d86dc0fa..60f07d224 100644 --- a/debian/patches/features/all/rt/0032-xfrm-Replace-hrtimer-tasklet-with-softirq-hrtimer.patch +++ b/debian/patches/features/all/rt/0032-xfrm-Replace-hrtimer-tasklet-with-softirq-hrtimer.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 23 Nov 2017 16:39:13 +0100 Subject: [PATCH 32/36] xfrm: Replace hrtimer tasklet with softirq hrtimer -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Switch the timer to HRTIMER_MODE_SOFT, which executed the timer callback in softirq context and remove the hrtimer_tasklet. diff --git a/debian/patches/features/all/rt/0033-softirq-Remove-tasklet_hrtimer.patch b/debian/patches/features/all/rt/0033-softirq-Remove-tasklet_hrtimer.patch index dbd3a5552..e5fd2e4bd 100644 --- a/debian/patches/features/all/rt/0033-softirq-Remove-tasklet_hrtimer.patch +++ b/debian/patches/features/all/rt/0033-softirq-Remove-tasklet_hrtimer.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 23 Nov 2017 16:39:14 +0100 Subject: [PATCH 33/36] softirq: Remove tasklet_hrtimer -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz There are no more tasklet_hrtimer users of this interface. Remove it. diff --git a/debian/patches/features/all/rt/0033-tracing-Make-tracing_set_clock-non-static.patch b/debian/patches/features/all/rt/0033-tracing-Make-tracing_set_clock-non-static.patch index 1a4d07524..396936a30 100644 --- a/debian/patches/features/all/rt/0033-tracing-Make-tracing_set_clock-non-static.patch +++ b/debian/patches/features/all/rt/0033-tracing-Make-tracing_set_clock-non-static.patch @@ -1,7 +1,7 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:38:14 -0600 +Date: Thu, 21 Dec 2017 10:02:55 -0600 Subject: [PATCH 33/37] tracing: Make tracing_set_clock() non-static -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Allow tracing code outside of trace.c to access tracing_set_clock(). @@ -19,7 +19,7 @@ Signed-off-by: Sebastian Andrzej Siewior --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c -@@ -6230,7 +6230,7 @@ static int tracing_clock_show(struct seq +@@ -6219,7 +6219,7 @@ static int tracing_clock_show(struct seq return 0; } diff --git a/debian/patches/features/all/rt/0034-ALSA-dummy-Replace-tasklet-with-softirq-hrtimer.patch b/debian/patches/features/all/rt/0034-ALSA-dummy-Replace-tasklet-with-softirq-hrtimer.patch index 4395e4856..a61e5fd26 100644 --- a/debian/patches/features/all/rt/0034-ALSA-dummy-Replace-tasklet-with-softirq-hrtimer.patch +++ b/debian/patches/features/all/rt/0034-ALSA-dummy-Replace-tasklet-with-softirq-hrtimer.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 23 Nov 2017 16:39:15 +0100 Subject: [PATCH 34/36] ALSA/dummy: Replace tasklet with softirq hrtimer -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The tasklet is used to defer the execution of snd_pcm_period_elapsed() to the softirq context. Using the HRTIMER_MODE_SOFT mode invokes the timer diff --git a/debian/patches/features/all/rt/0034-tracing-Add-a-clock-attribute-for-hist-triggers.patch b/debian/patches/features/all/rt/0034-tracing-Add-a-clock-attribute-for-hist-triggers.patch index 77f92c4ba..b3954309b 100644 --- a/debian/patches/features/all/rt/0034-tracing-Add-a-clock-attribute-for-hist-triggers.patch +++ b/debian/patches/features/all/rt/0034-tracing-Add-a-clock-attribute-for-hist-triggers.patch @@ -1,7 +1,7 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:38:15 -0600 +Date: Thu, 21 Dec 2017 10:02:56 -0600 Subject: [PATCH 34/37] tracing: Add a clock attribute for hist triggers -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The default clock if timestamps are used in a histogram is "global". If timestamps aren't used, the clock is irrelevant. @@ -47,7 +47,7 @@ Signed-off-by: Sebastian Andrzej Siewior bool pause; bool cont; bool clear; -@@ -1792,6 +1793,7 @@ static void destroy_hist_trigger_attrs(s +@@ -1780,6 +1781,7 @@ static void destroy_hist_trigger_attrs(s kfree(attrs->sort_key_str); kfree(attrs->keys_str); kfree(attrs->vals_str); @@ -55,7 +55,7 @@ Signed-off-by: Sebastian Andrzej Siewior kfree(attrs); } -@@ -1847,6 +1849,19 @@ static int parse_assignment(char *str, s +@@ -1835,6 +1837,19 @@ static int parse_assignment(char *str, s ret = -ENOMEM; goto out; } @@ -75,7 +75,7 @@ Signed-off-by: Sebastian Andrzej Siewior } else if (strncmp(str, "size=", strlen("size=")) == 0) { int map_bits = parse_map_size(str); -@@ -1911,6 +1926,14 @@ static struct hist_trigger_attrs *parse_ +@@ -1899,6 +1914,14 @@ static struct hist_trigger_attrs *parse_ goto free; } @@ -90,7 +90,7 @@ Signed-off-by: Sebastian Andrzej Siewior return attrs; free: destroy_hist_trigger_attrs(attrs); -@@ -4937,6 +4960,8 @@ static int event_hist_trigger_print(stru +@@ -4925,6 +4948,8 @@ static int event_hist_trigger_print(stru seq_puts(m, ".descending"); } seq_printf(m, ":size=%u", (1 << hist_data->map->map_bits)); @@ -99,7 +99,7 @@ Signed-off-by: Sebastian Andrzej Siewior print_actions_spec(m, hist_data); -@@ -5204,7 +5229,6 @@ static int hist_register_trigger(char *g +@@ -5192,7 +5217,6 @@ static int hist_register_trigger(char *g data->paused = true; if (named_data) { @@ -107,7 +107,7 @@ Signed-off-by: Sebastian Andrzej Siewior data->private_data = named_data->private_data; set_named_trigger_data(data, named_data); data->ops = &event_hist_trigger_named_ops; -@@ -5216,10 +5240,22 @@ static int hist_register_trigger(char *g +@@ -5204,10 +5228,22 @@ static int hist_register_trigger(char *g goto out; } diff --git a/debian/patches/features/all/rt/0035-tracing-Increase-trace_recursive_lock-limit-for-synt.patch b/debian/patches/features/all/rt/0035-tracing-Increase-trace_recursive_lock-limit-for-synt.patch index 9ad0b25f6..4469acc48 100644 --- a/debian/patches/features/all/rt/0035-tracing-Increase-trace_recursive_lock-limit-for-synt.patch +++ b/debian/patches/features/all/rt/0035-tracing-Increase-trace_recursive_lock-limit-for-synt.patch @@ -1,8 +1,8 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:38:16 -0600 +Date: Thu, 21 Dec 2017 10:02:57 -0600 Subject: [PATCH 35/37] tracing: Increase trace_recursive_lock() limit for synthetic events -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Synthetic event generation needs to happen while the current event is still in progress, so add 1 to the trace_recursive_lock() recursion diff --git a/debian/patches/features/all/rt/0035-usb-gadget-NCM-Replace-tasklet-with-softirq-hrtimer.patch b/debian/patches/features/all/rt/0035-usb-gadget-NCM-Replace-tasklet-with-softirq-hrtimer.patch index d8a4ad41d..0ef3cd1a1 100644 --- a/debian/patches/features/all/rt/0035-usb-gadget-NCM-Replace-tasklet-with-softirq-hrtimer.patch +++ b/debian/patches/features/all/rt/0035-usb-gadget-NCM-Replace-tasklet-with-softirq-hrtimer.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 23 Nov 2017 16:39:16 +0100 Subject: [PATCH 35/36] usb/gadget/NCM: Replace tasklet with softirq hrtimer -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The tx_tasklet tasklet is used in invoke the hrtimer (task_timer) in softirq context. This can be also achieved without the tasklet but diff --git a/debian/patches/features/all/rt/0036-net-mvpp2-Replace-tasklet-with-softirq-hrtimer.patch b/debian/patches/features/all/rt/0036-net-mvpp2-Replace-tasklet-with-softirq-hrtimer.patch index 997e0b5c6..cf80a1775 100644 --- a/debian/patches/features/all/rt/0036-net-mvpp2-Replace-tasklet-with-softirq-hrtimer.patch +++ b/debian/patches/features/all/rt/0036-net-mvpp2-Replace-tasklet-with-softirq-hrtimer.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 23 Nov 2017 16:39:17 +0100 Subject: [PATCH 36/36] net/mvpp2: Replace tasklet with softirq hrtimer -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The tx_done_tasklet tasklet is used in invoke the hrtimer (mvpp2_hr_timer_cb) in softirq context. This can be also achieved without diff --git a/debian/patches/features/all/rt/0036-tracing-Add-inter-event-blurb-to-HIST_TRIGGERS-confi.patch b/debian/patches/features/all/rt/0036-tracing-Add-inter-event-blurb-to-HIST_TRIGGERS-confi.patch index 7d8346ba7..883aa44c1 100644 --- a/debian/patches/features/all/rt/0036-tracing-Add-inter-event-blurb-to-HIST_TRIGGERS-confi.patch +++ b/debian/patches/features/all/rt/0036-tracing-Add-inter-event-blurb-to-HIST_TRIGGERS-confi.patch @@ -1,8 +1,8 @@ From: Tom Zanussi -Date: Wed, 6 Dec 2017 16:38:17 -0600 +Date: Thu, 21 Dec 2017 10:02:58 -0600 Subject: [PATCH 36/37] tracing: Add inter-event blurb to HIST_TRIGGERS config option -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz So that users know that inter-event tracing is supported as part of the HIST_TRIGGERS option, include text to that effect in the help diff --git a/debian/patches/features/all/rt/0037-selftests-ftrace-Add-inter-event-hist-triggers-testc.patch b/debian/patches/features/all/rt/0037-selftests-ftrace-Add-inter-event-hist-triggers-testc.patch index 968f7d438..60c730922 100644 --- a/debian/patches/features/all/rt/0037-selftests-ftrace-Add-inter-event-hist-triggers-testc.patch +++ b/debian/patches/features/all/rt/0037-selftests-ftrace-Add-inter-event-hist-triggers-testc.patch @@ -1,8 +1,8 @@ From: Rajvi Jingar -Date: Wed, 6 Dec 2017 16:38:18 -0600 +Date: Thu, 21 Dec 2017 10:02:59 -0600 Subject: [PATCH 37/37] selftests: ftrace: Add inter-event hist triggers testcases -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz This adds inter-event hist triggers testcases which covers following: - create/remove synthetic event diff --git a/debian/patches/features/all/rt/ARM-enable-irq-in-translation-section-permission-fau.patch b/debian/patches/features/all/rt/ARM-enable-irq-in-translation-section-permission-fau.patch index 274cdd10b..4756a569d 100644 --- a/debian/patches/features/all/rt/ARM-enable-irq-in-translation-section-permission-fau.patch +++ b/debian/patches/features/all/rt/ARM-enable-irq-in-translation-section-permission-fau.patch @@ -1,7 +1,7 @@ From: "Yadi.hu" Date: Wed, 10 Dec 2014 10:32:09 +0800 Subject: ARM: enable irq in translation/section permission fault handlers -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Probably happens on all ARM, with CONFIG_PREEMPT_RT_FULL diff --git a/debian/patches/features/all/rt/Bluetooth-avoid-recursive-locking-in-hci_send_to_cha.patch b/debian/patches/features/all/rt/Bluetooth-avoid-recursive-locking-in-hci_send_to_cha.patch index 112b78127..c65c0e2ea 100644 --- a/debian/patches/features/all/rt/Bluetooth-avoid-recursive-locking-in-hci_send_to_cha.patch +++ b/debian/patches/features/all/rt/Bluetooth-avoid-recursive-locking-in-hci_send_to_cha.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 21 Sep 2017 15:35:57 +0200 Subject: Bluetooth: avoid recursive locking in hci_send_to_channel() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Mart reported a deadlock in -RT in the call path: hci_send_monitor_ctrl_event() -> hci_send_to_channel() diff --git a/debian/patches/features/all/rt/HACK-printk-drop-the-logbuf_lock-more-often.patch b/debian/patches/features/all/rt/HACK-printk-drop-the-logbuf_lock-more-often.patch index 1da66193a..6a641afc9 100644 --- a/debian/patches/features/all/rt/HACK-printk-drop-the-logbuf_lock-more-often.patch +++ b/debian/patches/features/all/rt/HACK-printk-drop-the-logbuf_lock-more-often.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 21 Mar 2013 19:01:05 +0100 Subject: printk: Drop the logbuf_lock more often -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The lock is hold with irgs off. The latency drops 500us+ on my arm bugs with a "full" buffer after executing "dmesg" on the shell. diff --git a/debian/patches/features/all/rt/KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch b/debian/patches/features/all/rt/KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch index e5610190b..c0e3e6811 100644 --- a/debian/patches/features/all/rt/KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch +++ b/debian/patches/features/all/rt/KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch @@ -1,7 +1,7 @@ From: Josh Cartwright Date: Thu, 11 Feb 2016 11:54:01 -0600 Subject: KVM: arm/arm64: downgrade preempt_disable()d region to migrate_disable() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz kvm_arch_vcpu_ioctl_run() disables the use of preemption when updating the vgic and timer states to prevent the calling task from migrating to diff --git a/debian/patches/features/all/rt/NFSv4-replace-seqcount_t-with-a-seqlock_t.patch b/debian/patches/features/all/rt/NFSv4-replace-seqcount_t-with-a-seqlock_t.patch index 3675a9d3a..5543a0244 100644 --- a/debian/patches/features/all/rt/NFSv4-replace-seqcount_t-with-a-seqlock_t.patch +++ b/debian/patches/features/all/rt/NFSv4-replace-seqcount_t-with-a-seqlock_t.patch @@ -5,7 +5,7 @@ Cc: Anna Schumaker , linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de Subject: NFSv4: replace seqcount_t with a seqlock_t -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The raw_write_seqcount_begin() in nfs4_reclaim_open_state() bugs me because it maps to preempt_disable() in -RT which I can't have at this diff --git a/debian/patches/features/all/rt/RCU-we-need-to-skip-that-warning-but-only-on-sleepin.patch b/debian/patches/features/all/rt/RCU-we-need-to-skip-that-warning-but-only-on-sleepin.patch index d7ef7bbe6..95fe517e0 100644 --- a/debian/patches/features/all/rt/RCU-we-need-to-skip-that-warning-but-only-on-sleepin.patch +++ b/debian/patches/features/all/rt/RCU-we-need-to-skip-that-warning-but-only-on-sleepin.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 21 Sep 2017 14:25:13 +0200 Subject: [PATCH] RCU: we need to skip that warning but only on sleeping locks -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz This check is okay for upstream. On RT we trigger this while blocking on sleeping lock. In this case, it is okay to schedule() within a RCU diff --git a/debian/patches/features/all/rt/Revert-fs-jbd2-pull-your-plug-when-waiting-for-space.patch b/debian/patches/features/all/rt/Revert-fs-jbd2-pull-your-plug-when-waiting-for-space.patch index a44b22f4d..574793f19 100644 --- a/debian/patches/features/all/rt/Revert-fs-jbd2-pull-your-plug-when-waiting-for-space.patch +++ b/debian/patches/features/all/rt/Revert-fs-jbd2-pull-your-plug-when-waiting-for-space.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 23 Nov 2017 17:51:51 +0100 Subject: [PATCH] Revert "fs: jbd2: pull your plug when waiting for space" -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz This reverts commit "fs: jbd2: pull your plug when waiting for space". This was a duct-tape fix which shouldn't be needed since commit diff --git a/debian/patches/features/all/rt/Revert-memcontrol-Prevent-scheduling-while-atomic-in.patch b/debian/patches/features/all/rt/Revert-memcontrol-Prevent-scheduling-while-atomic-in.patch index a4c36c2ea..e22d6e278 100644 --- a/debian/patches/features/all/rt/Revert-memcontrol-Prevent-scheduling-while-atomic-in.patch +++ b/debian/patches/features/all/rt/Revert-memcontrol-Prevent-scheduling-while-atomic-in.patch @@ -2,7 +2,7 @@ From: "Steven Rostedt (VMware)" Date: Wed, 22 Nov 2017 07:31:19 -0500 Subject: [PATCH] Revert "memcontrol: Prevent scheduling while atomic in cgroup code" -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The commit "memcontrol: Prevent scheduling while atomic in cgroup code" fixed this issue: diff --git a/debian/patches/features/all/rt/acpi-rt-Convert-acpi_gbl_hardware-lock-back-to-a-raw.patch b/debian/patches/features/all/rt/acpi-rt-Convert-acpi_gbl_hardware-lock-back-to-a-raw.patch index db75932f1..596fa68b5 100644 --- a/debian/patches/features/all/rt/acpi-rt-Convert-acpi_gbl_hardware-lock-back-to-a-raw.patch +++ b/debian/patches/features/all/rt/acpi-rt-Convert-acpi_gbl_hardware-lock-back-to-a-raw.patch @@ -1,7 +1,7 @@ From: Steven Rostedt Date: Wed, 13 Feb 2013 09:26:05 -0500 Subject: acpi/rt: Convert acpi_gbl_hardware lock back to a raw_spinlock_t -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz We hit the following bug with 3.6-rt: diff --git a/debian/patches/features/all/rt/add_migrate_disable.patch b/debian/patches/features/all/rt/add_migrate_disable.patch index f3913a22c..53989f993 100644 --- a/debian/patches/features/all/rt/add_migrate_disable.patch +++ b/debian/patches/features/all/rt/add_migrate_disable.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Sat, 27 May 2017 19:02:06 +0200 Subject: kernel/sched/core: add migrate_disable() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz --- include/linux/preempt.h | 23 ++++++++ diff --git a/debian/patches/features/all/rt/apparmor-use-a-locallock-instead-preempt_disable.patch b/debian/patches/features/all/rt/apparmor-use-a-locallock-instead-preempt_disable.patch index cd9079689..fccd4cc31 100644 --- a/debian/patches/features/all/rt/apparmor-use-a-locallock-instead-preempt_disable.patch +++ b/debian/patches/features/all/rt/apparmor-use-a-locallock-instead-preempt_disable.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 11 Oct 2017 17:43:49 +0200 Subject: apparmor: use a locallock instead preempt_disable() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz get_buffers() disables preemption which acts as a lock for the per-CPU variable. Since we can't disable preemption here on RT, a local_lock is diff --git a/debian/patches/features/all/rt/arch-arm64-Add-lazy-preempt-support.patch b/debian/patches/features/all/rt/arch-arm64-Add-lazy-preempt-support.patch index ad21aacab..714be122e 100644 --- a/debian/patches/features/all/rt/arch-arm64-Add-lazy-preempt-support.patch +++ b/debian/patches/features/all/rt/arch-arm64-Add-lazy-preempt-support.patch @@ -1,7 +1,7 @@ From: Anders Roxell Date: Thu, 14 May 2015 17:52:17 +0200 Subject: arch/arm64: Add lazy preempt support -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz arm64 is missing support for PREEMPT_RT. The main feature which is lacking is support for lazy preemption. The arch-specific entry code, diff --git a/debian/patches/features/all/rt/arm-at91-pit-remove-irq-handler-when-clock-is-unused.patch b/debian/patches/features/all/rt/arm-at91-pit-remove-irq-handler-when-clock-is-unused.patch index d033df504..b2f8d758d 100644 --- a/debian/patches/features/all/rt/arm-at91-pit-remove-irq-handler-when-clock-is-unused.patch +++ b/debian/patches/features/all/rt/arm-at91-pit-remove-irq-handler-when-clock-is-unused.patch @@ -1,7 +1,7 @@ From: Benedikt Spranger Date: Sat, 6 Mar 2010 17:47:10 +0100 Subject: ARM: AT91: PIT: Remove irq handler when clock event is unused -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Setup and remove the interrupt handler in clock event mode selection. This avoids calling the (shared) interrupt handler when the device is diff --git a/debian/patches/features/all/rt/arm-at91-tclib-default-to-tclib-timer-for-rt.patch b/debian/patches/features/all/rt/arm-at91-tclib-default-to-tclib-timer-for-rt.patch index a11cb6454..2e8f627c1 100644 --- a/debian/patches/features/all/rt/arm-at91-tclib-default-to-tclib-timer-for-rt.patch +++ b/debian/patches/features/all/rt/arm-at91-tclib-default-to-tclib-timer-for-rt.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Sat, 1 May 2010 18:29:35 +0200 Subject: ARM: at91: tclib: Default to tclib timer for RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz RT is not too happy about the shared timer interrupt in AT91 devices. Default to tclib timer for RT. diff --git a/debian/patches/features/all/rt/arm-convert-boot-lock-to-raw.patch b/debian/patches/features/all/rt/arm-convert-boot-lock-to-raw.patch index 41a1e6005..ab01b9156 100644 --- a/debian/patches/features/all/rt/arm-convert-boot-lock-to-raw.patch +++ b/debian/patches/features/all/rt/arm-convert-boot-lock-to-raw.patch @@ -1,7 +1,7 @@ From: Frank Rowand Date: Mon, 19 Sep 2011 14:51:14 -0700 Subject: arm: Convert arm boot_lock to raw -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The arm boot_lock is used by the secondary processor startup code. The locking task is the idle thread, which has idle->sched_class == &idle_sched_class. diff --git a/debian/patches/features/all/rt/arm-disable-NEON-in-kernel-mode.patch b/debian/patches/features/all/rt/arm-disable-NEON-in-kernel-mode.patch index 0146808ea..dcb552d3f 100644 --- a/debian/patches/features/all/rt/arm-disable-NEON-in-kernel-mode.patch +++ b/debian/patches/features/all/rt/arm-disable-NEON-in-kernel-mode.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 1 Dec 2017 10:42:03 +0100 Subject: [PATCH] arm*: disable NEON in kernel mode -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz NEON in kernel mode is used by the crypto algorithms and raid6 code. While the raid6 code looks okay, the crypto algorithms do not: NEON diff --git a/debian/patches/features/all/rt/arm-enable-highmem-for-rt.patch b/debian/patches/features/all/rt/arm-enable-highmem-for-rt.patch index 6d3efece4..4e87e137b 100644 --- a/debian/patches/features/all/rt/arm-enable-highmem-for-rt.patch +++ b/debian/patches/features/all/rt/arm-enable-highmem-for-rt.patch @@ -1,7 +1,7 @@ Subject: arm: Enable highmem for rt From: Thomas Gleixner Date: Wed, 13 Feb 2013 11:03:11 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz fixup highmem for ARM. diff --git a/debian/patches/features/all/rt/arm-highmem-flush-tlb-on-unmap.patch b/debian/patches/features/all/rt/arm-highmem-flush-tlb-on-unmap.patch index a981a0708..6425a03cc 100644 --- a/debian/patches/features/all/rt/arm-highmem-flush-tlb-on-unmap.patch +++ b/debian/patches/features/all/rt/arm-highmem-flush-tlb-on-unmap.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Mon, 11 Mar 2013 21:37:27 +0100 Subject: arm/highmem: Flush tlb on unmap -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The tlb should be flushed on unmap and thus make the mapping entry invalid. This is only done in the non-debug case which does not look diff --git a/debian/patches/features/all/rt/arm-include-definition-for-cpumask_t.patch b/debian/patches/features/all/rt/arm-include-definition-for-cpumask_t.patch index 8045ee013..446dd562a 100644 --- a/debian/patches/features/all/rt/arm-include-definition-for-cpumask_t.patch +++ b/debian/patches/features/all/rt/arm-include-definition-for-cpumask_t.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 22 Dec 2016 17:28:33 +0100 Subject: [PATCH] arm: include definition for cpumask_t -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz This definition gets pulled in by other files. With the (later) split of RCU and spinlock.h it won't compile anymore. diff --git a/debian/patches/features/all/rt/arm-kprobe-replace-patch_lock-to-raw-lock.patch b/debian/patches/features/all/rt/arm-kprobe-replace-patch_lock-to-raw-lock.patch index 71795d4ad..2f3cd0c4c 100644 --- a/debian/patches/features/all/rt/arm-kprobe-replace-patch_lock-to-raw-lock.patch +++ b/debian/patches/features/all/rt/arm-kprobe-replace-patch_lock-to-raw-lock.patch @@ -1,7 +1,7 @@ From: Yang Shi Date: Thu, 10 Nov 2016 16:17:55 -0800 Subject: [PATCH] arm: kprobe: replace patch_lock to raw lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz When running kprobe on -rt kernel, the below bug is caught: diff --git a/debian/patches/features/all/rt/arm-preempt-lazy-support.patch b/debian/patches/features/all/rt/arm-preempt-lazy-support.patch index 1e0682916..31abb8398 100644 --- a/debian/patches/features/all/rt/arm-preempt-lazy-support.patch +++ b/debian/patches/features/all/rt/arm-preempt-lazy-support.patch @@ -1,7 +1,7 @@ Subject: arm: Add support for lazy preemption From: Thomas Gleixner Date: Wed, 31 Oct 2012 12:04:11 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Implement the arm pieces for lazy preempt. diff --git a/debian/patches/features/all/rt/arm-unwind-use_raw_lock.patch b/debian/patches/features/all/rt/arm-unwind-use_raw_lock.patch index 783921437..69ae3aa94 100644 --- a/debian/patches/features/all/rt/arm-unwind-use_raw_lock.patch +++ b/debian/patches/features/all/rt/arm-unwind-use_raw_lock.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 20 Sep 2013 14:31:54 +0200 Subject: arm/unwind: use a raw_spin_lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Mostly unwind is done with irqs enabled however SLUB may call it with irqs disabled while creating a new SLUB cache. diff --git a/debian/patches/features/all/rt/arm64-xen--Make-XEN-depend-on-non-rt.patch b/debian/patches/features/all/rt/arm64-xen--Make-XEN-depend-on-non-rt.patch index 9cfbff8e3..625f67874 100644 --- a/debian/patches/features/all/rt/arm64-xen--Make-XEN-depend-on-non-rt.patch +++ b/debian/patches/features/all/rt/arm64-xen--Make-XEN-depend-on-non-rt.patch @@ -1,7 +1,7 @@ Subject: arm64/xen: Make XEN depend on !RT From: Thomas Gleixner Date: Mon, 12 Oct 2015 11:18:40 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz It's not ready and probably never will be, unless xen folks have a look at it. diff --git a/debian/patches/features/all/rt/at91_dont_enable_disable_clock.patch b/debian/patches/features/all/rt/at91_dont_enable_disable_clock.patch index b1e9ad3fb..d5d3a70d7 100644 --- a/debian/patches/features/all/rt/at91_dont_enable_disable_clock.patch +++ b/debian/patches/features/all/rt/at91_dont_enable_disable_clock.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 09 Mar 2016 10:51:06 +0100 Subject: arm: at91: do not disable/enable clocks in a row -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Currently the driver will disable the clock and enable it one line later if it is switching from periodic mode into one shot. diff --git a/debian/patches/features/all/rt/ata-disable-interrupts-if-non-rt.patch b/debian/patches/features/all/rt/ata-disable-interrupts-if-non-rt.patch index d41b2efe2..fc8bf623a 100644 --- a/debian/patches/features/all/rt/ata-disable-interrupts-if-non-rt.patch +++ b/debian/patches/features/all/rt/ata-disable-interrupts-if-non-rt.patch @@ -1,7 +1,7 @@ From: Steven Rostedt Date: Fri, 3 Jul 2009 08:44:29 -0500 Subject: ata: Do not disable interrupts in ide code for preempt-rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Use the local_irq_*_nort variants. diff --git a/debian/patches/features/all/rt/block-blk-mq-use-swait.patch b/debian/patches/features/all/rt/block-blk-mq-use-swait.patch index 880ff708b..a25464832 100644 --- a/debian/patches/features/all/rt/block-blk-mq-use-swait.patch +++ b/debian/patches/features/all/rt/block-blk-mq-use-swait.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 13 Feb 2015 11:01:26 +0100 Subject: block: blk-mq: Use swait -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz | BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:914 | in_atomic(): 1, irqs_disabled(): 0, pid: 255, name: kworker/u257:6 diff --git a/debian/patches/features/all/rt/block-mq-don-t-complete-requests-via-IPI.patch b/debian/patches/features/all/rt/block-mq-don-t-complete-requests-via-IPI.patch index 1ffde853e..ba91fe2c1 100644 --- a/debian/patches/features/all/rt/block-mq-don-t-complete-requests-via-IPI.patch +++ b/debian/patches/features/all/rt/block-mq-don-t-complete-requests-via-IPI.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 29 Jan 2015 15:10:08 +0100 Subject: block/mq: don't complete requests via IPI -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The IPI runs in hardirq context and there are sleeping locks. This patch moves the completion into a workqueue. diff --git a/debian/patches/features/all/rt/block-mq-drop-preempt-disable.patch b/debian/patches/features/all/rt/block-mq-drop-preempt-disable.patch index 8c9426390..59899c819 100644 --- a/debian/patches/features/all/rt/block-mq-drop-preempt-disable.patch +++ b/debian/patches/features/all/rt/block-mq-drop-preempt-disable.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Tue, 14 Jul 2015 14:26:34 +0200 Subject: block/mq: do not invoke preempt_disable() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz preempt_disable() and get_cpu() don't play well together with the sleeping locks it tries to allocate later. diff --git a/debian/patches/features/all/rt/block-mq-use-cpu_light.patch b/debian/patches/features/all/rt/block-mq-use-cpu_light.patch index e608691b7..f5aa218f2 100644 --- a/debian/patches/features/all/rt/block-mq-use-cpu_light.patch +++ b/debian/patches/features/all/rt/block-mq-use-cpu_light.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 9 Apr 2014 10:37:23 +0200 Subject: block: mq: use cpu_light() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz there is a might sleep splat because get_cpu() disables preemption and later we grab a lock. As a workaround for this we use get_cpu_light(). diff --git a/debian/patches/features/all/rt/block-shorten-interrupt-disabled-regions.patch b/debian/patches/features/all/rt/block-shorten-interrupt-disabled-regions.patch index 09e13a867..9a8daa696 100644 --- a/debian/patches/features/all/rt/block-shorten-interrupt-disabled-regions.patch +++ b/debian/patches/features/all/rt/block-shorten-interrupt-disabled-regions.patch @@ -1,7 +1,7 @@ Subject: block: Shorten interrupt disabled regions From: Thomas Gleixner Date: Wed, 22 Jun 2011 19:47:02 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Moving the blk_sched_flush_plug() call out of the interrupt/preempt disabled region in the scheduler allows us to replace diff --git a/debian/patches/features/all/rt/block-use-cpu-chill.patch b/debian/patches/features/all/rt/block-use-cpu-chill.patch index 99b68e863..25cb7f51b 100644 --- a/debian/patches/features/all/rt/block-use-cpu-chill.patch +++ b/debian/patches/features/all/rt/block-use-cpu-chill.patch @@ -1,7 +1,7 @@ Subject: block: Use cpu_chill() for retry loops From: Thomas Gleixner Date: Thu, 20 Dec 2012 18:28:26 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Retry loops on RT might loop forever when the modifying side was preempted. Steven also observed a live lock when there was a diff --git a/debian/patches/features/all/rt/bug-rt-dependend-variants.patch b/debian/patches/features/all/rt/bug-rt-dependend-variants.patch index 321e68665..ba7a6a660 100644 --- a/debian/patches/features/all/rt/bug-rt-dependend-variants.patch +++ b/debian/patches/features/all/rt/bug-rt-dependend-variants.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:29:58 -0500 Subject: bug: BUG_ON/WARN_ON variants dependend on RT/!RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Introduce RT/NON-RT WARN/BUG statements to avoid ifdefs in the code. diff --git a/debian/patches/features/all/rt/cgroups-scheduling-while-atomic-in-cgroup-code.patch b/debian/patches/features/all/rt/cgroups-scheduling-while-atomic-in-cgroup-code.patch index 918ec582c..e81eea4c1 100644 --- a/debian/patches/features/all/rt/cgroups-scheduling-while-atomic-in-cgroup-code.patch +++ b/debian/patches/features/all/rt/cgroups-scheduling-while-atomic-in-cgroup-code.patch @@ -1,7 +1,7 @@ From: Mike Galbraith Date: Sat, 21 Jun 2014 10:09:48 +0200 Subject: memcontrol: Prevent scheduling while atomic in cgroup code -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz mm, memcg: make refill_stock() use get_cpu_light() diff --git a/debian/patches/features/all/rt/cgroups-use-simple-wait-in-css_release.patch b/debian/patches/features/all/rt/cgroups-use-simple-wait-in-css_release.patch index 4f594fd65..2f3d62551 100644 --- a/debian/patches/features/all/rt/cgroups-use-simple-wait-in-css_release.patch +++ b/debian/patches/features/all/rt/cgroups-use-simple-wait-in-css_release.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 13 Feb 2015 15:52:24 +0100 Subject: cgroups: use simple wait in css_release() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz To avoid: |BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:914 diff --git a/debian/patches/features/all/rt/char-random-don-t-print-that-the-init-is-done.patch b/debian/patches/features/all/rt/char-random-don-t-print-that-the-init-is-done.patch index ef0decab8..fda66e55d 100644 --- a/debian/patches/features/all/rt/char-random-don-t-print-that-the-init-is-done.patch +++ b/debian/patches/features/all/rt/char-random-don-t-print-that-the-init-is-done.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Tue, 30 May 2017 16:39:01 +0200 Subject: char/random: don't print that the init is done -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz On RT we run into circular locking with pendingb_lock (workqueue), port_lock_key (uart) and the primary_crng (random): diff --git a/debian/patches/features/all/rt/clockevents-drivers-timer-atmel-pit-fix-double-free_.patch b/debian/patches/features/all/rt/clockevents-drivers-timer-atmel-pit-fix-double-free_.patch index a6c543f2d..6eb19c749 100644 --- a/debian/patches/features/all/rt/clockevents-drivers-timer-atmel-pit-fix-double-free_.patch +++ b/debian/patches/features/all/rt/clockevents-drivers-timer-atmel-pit-fix-double-free_.patch @@ -1,7 +1,7 @@ From: Alexandre Belloni Date: Thu, 17 Mar 2016 21:09:43 +0100 Subject: [PATCH] clockevents/drivers/timer-atmel-pit: fix double free_irq -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz clockevents_exchange_device() changes the state from detached to shutdown and so at that point the IRQ has not yet been requested. diff --git a/debian/patches/features/all/rt/clocksource-tclib-allow-higher-clockrates.patch b/debian/patches/features/all/rt/clocksource-tclib-allow-higher-clockrates.patch index 785783674..aaa6738cf 100644 --- a/debian/patches/features/all/rt/clocksource-tclib-allow-higher-clockrates.patch +++ b/debian/patches/features/all/rt/clocksource-tclib-allow-higher-clockrates.patch @@ -1,7 +1,7 @@ From: Benedikt Spranger Date: Mon, 8 Mar 2010 18:57:04 +0100 Subject: clocksource: TCLIB: Allow higher clock rates for clock events -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz As default the TCLIB uses the 32KiHz base clock rate for clock events. Add a compile time selection to allow higher clock resulution. diff --git a/debian/patches/features/all/rt/completion-use-simple-wait-queues.patch b/debian/patches/features/all/rt/completion-use-simple-wait-queues.patch index d8734bbf4..8c448eabb 100644 --- a/debian/patches/features/all/rt/completion-use-simple-wait-queues.patch +++ b/debian/patches/features/all/rt/completion-use-simple-wait-queues.patch @@ -1,7 +1,7 @@ Subject: completion: Use simple wait queues From: Thomas Gleixner Date: Fri, 11 Jan 2013 11:23:51 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Completions have no long lasting callbacks and therefor do not need the complex waitqueue variant. Use simple waitqueues which reduces the diff --git a/debian/patches/features/all/rt/cond-resched-lock-rt-tweak.patch b/debian/patches/features/all/rt/cond-resched-lock-rt-tweak.patch index 3b6d0e8a0..53940b564 100644 --- a/debian/patches/features/all/rt/cond-resched-lock-rt-tweak.patch +++ b/debian/patches/features/all/rt/cond-resched-lock-rt-tweak.patch @@ -1,7 +1,7 @@ Subject: sched: Use the proper LOCK_OFFSET for cond_resched() From: Thomas Gleixner Date: Sun, 17 Jul 2011 22:51:33 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz RT does not increment preempt count when a 'sleeping' spinlock is locked. Update PREEMPT_LOCK_OFFSET for that case. diff --git a/debian/patches/features/all/rt/cond-resched-softirq-rt.patch b/debian/patches/features/all/rt/cond-resched-softirq-rt.patch index fce79cb0d..1be4ef58f 100644 --- a/debian/patches/features/all/rt/cond-resched-softirq-rt.patch +++ b/debian/patches/features/all/rt/cond-resched-softirq-rt.patch @@ -1,7 +1,7 @@ Subject: sched: Take RT softirq semantics into account in cond_resched() From: Thomas Gleixner Date: Thu, 14 Jul 2011 09:56:44 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The softirq semantics work different on -RT. There is no SOFTIRQ_MASK in the preemption counter which leads to the BUG_ON() statement in diff --git a/debian/patches/features/all/rt/connector-cn_proc-Protect-send_msg-with-a-local-lock.patch b/debian/patches/features/all/rt/connector-cn_proc-Protect-send_msg-with-a-local-lock.patch index 11c7b3a38..8168c20ec 100644 --- a/debian/patches/features/all/rt/connector-cn_proc-Protect-send_msg-with-a-local-lock.patch +++ b/debian/patches/features/all/rt/connector-cn_proc-Protect-send_msg-with-a-local-lock.patch @@ -2,7 +2,7 @@ From: Mike Galbraith Date: Sun, 16 Oct 2016 05:11:54 +0200 Subject: [PATCH] connector/cn_proc: Protect send_msg() with a local lock on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz |BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:931 |in_atomic(): 1, irqs_disabled(): 0, pid: 31807, name: sleep diff --git a/debian/patches/features/all/rt/cpu-hotplug--Implement-CPU-pinning.patch b/debian/patches/features/all/rt/cpu-hotplug--Implement-CPU-pinning.patch index 100636e2a..9f39d92be 100644 --- a/debian/patches/features/all/rt/cpu-hotplug--Implement-CPU-pinning.patch +++ b/debian/patches/features/all/rt/cpu-hotplug--Implement-CPU-pinning.patch @@ -1,7 +1,7 @@ Subject: cpu/hotplug: Implement CPU pinning From: Thomas Gleixner Date: Wed, 19 Jul 2017 17:31:20 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Signed-off-by: Thomas Gleixner --- diff --git a/debian/patches/features/all/rt/cpu_chill-Add-a-UNINTERRUPTIBLE-hrtimer_nanosleep.patch b/debian/patches/features/all/rt/cpu_chill-Add-a-UNINTERRUPTIBLE-hrtimer_nanosleep.patch index af5c86535..1ebd09b1b 100644 --- a/debian/patches/features/all/rt/cpu_chill-Add-a-UNINTERRUPTIBLE-hrtimer_nanosleep.patch +++ b/debian/patches/features/all/rt/cpu_chill-Add-a-UNINTERRUPTIBLE-hrtimer_nanosleep.patch @@ -1,7 +1,7 @@ From: Steven Rostedt Date: Tue, 4 Mar 2014 12:28:32 -0500 Subject: cpu_chill: Add a UNINTERRUPTIBLE hrtimer_nanosleep -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz We hit another bug that was caused by switching cpu_chill() from msleep() to hrtimer_nanosleep(). diff --git a/debian/patches/features/all/rt/cpufreq-drop-K8-s-driver-from-beeing-selected.patch b/debian/patches/features/all/rt/cpufreq-drop-K8-s-driver-from-beeing-selected.patch index de88b2e5f..0e1d1bbea 100644 --- a/debian/patches/features/all/rt/cpufreq-drop-K8-s-driver-from-beeing-selected.patch +++ b/debian/patches/features/all/rt/cpufreq-drop-K8-s-driver-from-beeing-selected.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 9 Apr 2015 15:23:01 +0200 Subject: cpufreq: drop K8's driver from beeing selected -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Ralf posted a picture of a backtrace from diff --git a/debian/patches/features/all/rt/cpumask-disable-offstack-on-rt.patch b/debian/patches/features/all/rt/cpumask-disable-offstack-on-rt.patch index 151322f57..52bb1ef9d 100644 --- a/debian/patches/features/all/rt/cpumask-disable-offstack-on-rt.patch +++ b/debian/patches/features/all/rt/cpumask-disable-offstack-on-rt.patch @@ -1,7 +1,7 @@ Subject: cpumask: Disable CONFIG_CPUMASK_OFFSTACK for RT From: Thomas Gleixner Date: Wed, 14 Dec 2011 01:03:49 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz There are "valid" GFP_ATOMIC allocations such as diff --git a/debian/patches/features/all/rt/cpuset-Convert-callback_lock-to-raw_spinlock_t.patch b/debian/patches/features/all/rt/cpuset-Convert-callback_lock-to-raw_spinlock_t.patch index 0ec8a42c0..c13b7f450 100644 --- a/debian/patches/features/all/rt/cpuset-Convert-callback_lock-to-raw_spinlock_t.patch +++ b/debian/patches/features/all/rt/cpuset-Convert-callback_lock-to-raw_spinlock_t.patch @@ -1,7 +1,7 @@ From: Mike Galbraith Date: Sun, 8 Jan 2017 09:32:25 +0100 Subject: [PATCH] cpuset: Convert callback_lock to raw_spinlock_t -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The two commits below add up to a cpuset might_sleep() splat for RT: diff --git a/debian/patches/features/all/rt/crypto-Reduce-preempt-disabled-regions-more-algos.patch b/debian/patches/features/all/rt/crypto-Reduce-preempt-disabled-regions-more-algos.patch index bf06b41cc..cfa536da9 100644 --- a/debian/patches/features/all/rt/crypto-Reduce-preempt-disabled-regions-more-algos.patch +++ b/debian/patches/features/all/rt/crypto-Reduce-preempt-disabled-regions-more-algos.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 21 Feb 2014 17:24:04 +0100 Subject: crypto: Reduce preempt disabled regions, more algos -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Don Estabrook reported | kernel: WARNING: CPU: 2 PID: 858 at kernel/sched/core.c:2428 migrate_disable+0xed/0x100() diff --git a/debian/patches/features/all/rt/crypto-limit-more-FPU-enabled-sections.patch b/debian/patches/features/all/rt/crypto-limit-more-FPU-enabled-sections.patch index 704cd3d59..35b852071 100644 --- a/debian/patches/features/all/rt/crypto-limit-more-FPU-enabled-sections.patch +++ b/debian/patches/features/all/rt/crypto-limit-more-FPU-enabled-sections.patch @@ -4,7 +4,7 @@ Subject: [PATCH] crypto: limit more FPU-enabled sections MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Those crypto drivers use SSE/AVX/… for their crypto work and in order to do so in kernel they need to enable the "FPU" in kernel mode which diff --git a/debian/patches/features/all/rt/crypto-mcryptd-protect-the-per-CPU-queue-with-a-lock.patch b/debian/patches/features/all/rt/crypto-mcryptd-protect-the-per-CPU-queue-with-a-lock.patch index f7eff5b1b..fc67156bf 100644 --- a/debian/patches/features/all/rt/crypto-mcryptd-protect-the-per-CPU-queue-with-a-lock.patch +++ b/debian/patches/features/all/rt/crypto-mcryptd-protect-the-per-CPU-queue-with-a-lock.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 30 Nov 2017 13:03:09 +0100 Subject: [PATCH] crypto: mcryptd: protect the per-CPU queue with a lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz mcryptd_enqueue_request() grabs the per-CPU queue struct and protects access to it with disabled preemption. Then it schedules a worker on the diff --git a/debian/patches/features/all/rt/debugobjects-rt.patch b/debian/patches/features/all/rt/debugobjects-rt.patch index 87c755dfa..11cc372b1 100644 --- a/debian/patches/features/all/rt/debugobjects-rt.patch +++ b/debian/patches/features/all/rt/debugobjects-rt.patch @@ -1,7 +1,7 @@ Subject: debugobjects: Make RT aware From: Thomas Gleixner Date: Sun, 17 Jul 2011 21:41:35 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Avoid filling the pool / allocating memory with irqs off(). diff --git a/debian/patches/features/all/rt/delayacct-use-raw_spinlocks.patch b/debian/patches/features/all/rt/delayacct-use-raw_spinlocks.patch index b39a817f1..68db3fe36 100644 --- a/debian/patches/features/all/rt/delayacct-use-raw_spinlocks.patch +++ b/debian/patches/features/all/rt/delayacct-use-raw_spinlocks.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Sat, 20 May 2017 12:32:23 +0200 Subject: [PATCH] delayacct: use raw_spinlocks -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz try_to_wake_up() might invoke delayacct_blkio_end() while holding the pi_lock. The lock is only held for a short amount of time so it should diff --git a/debian/patches/features/all/rt/dm-make-rt-aware.patch b/debian/patches/features/all/rt/dm-make-rt-aware.patch index 029bcf105..fc3616786 100644 --- a/debian/patches/features/all/rt/dm-make-rt-aware.patch +++ b/debian/patches/features/all/rt/dm-make-rt-aware.patch @@ -1,7 +1,7 @@ Subject: dm: Make rt aware From: Thomas Gleixner Date: Mon, 14 Nov 2011 23:06:09 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Use the BUG_ON_NORT variant for the irq_disabled() checks. RT has interrupts legitimately enabled here as we cant deadlock against the diff --git a/debian/patches/features/all/rt/drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch b/debian/patches/features/all/rt/drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch index e16a678c9..c0c1bf99a 100644 --- a/debian/patches/features/all/rt/drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch +++ b/debian/patches/features/all/rt/drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch @@ -2,7 +2,7 @@ From: Mike Galbraith Date: Thu, 31 Mar 2016 04:08:28 +0200 Subject: [PATCH] drivers/block/zram: Replace bit spinlocks with rtmutex for -rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz They're nondeterministic, and lead to ___might_sleep() splats in -rt. OTOH, they're a lot less wasteful than an rtmutex per page. diff --git a/debian/patches/features/all/rt/drivers-net-8139-disable-irq-nosync.patch b/debian/patches/features/all/rt/drivers-net-8139-disable-irq-nosync.patch index 391e5d864..7774c05e4 100644 --- a/debian/patches/features/all/rt/drivers-net-8139-disable-irq-nosync.patch +++ b/debian/patches/features/all/rt/drivers-net-8139-disable-irq-nosync.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:29:24 -0500 Subject: drivers/net: Use disable_irq_nosync() in 8139too -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Use disable_irq_nosync() instead of disable_irq() as this might be called in atomic context with netpoll. diff --git a/debian/patches/features/all/rt/drivers-net-vortex-fix-locking-issues.patch b/debian/patches/features/all/rt/drivers-net-vortex-fix-locking-issues.patch index 7e3fba817..acfbb9dfe 100644 --- a/debian/patches/features/all/rt/drivers-net-vortex-fix-locking-issues.patch +++ b/debian/patches/features/all/rt/drivers-net-vortex-fix-locking-issues.patch @@ -1,7 +1,7 @@ From: Steven Rostedt Date: Fri, 3 Jul 2009 08:30:00 -0500 Subject: drivers/net: vortex fix locking issues -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Argh, cut and paste wasn't enough... diff --git a/debian/patches/features/all/rt/drivers-random-reduce-preempt-disabled-region.patch b/debian/patches/features/all/rt/drivers-random-reduce-preempt-disabled-region.patch index d82f36fcd..da589361c 100644 --- a/debian/patches/features/all/rt/drivers-random-reduce-preempt-disabled-region.patch +++ b/debian/patches/features/all/rt/drivers-random-reduce-preempt-disabled-region.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:29:30 -0500 Subject: drivers: random: Reduce preempt disabled region -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz No need to keep preemption disabled across the whole function. diff --git a/debian/patches/features/all/rt/drivers-tty-fix-omap-lock-crap.patch b/debian/patches/features/all/rt/drivers-tty-fix-omap-lock-crap.patch index 51c963d11..d777e2fba 100644 --- a/debian/patches/features/all/rt/drivers-tty-fix-omap-lock-crap.patch +++ b/debian/patches/features/all/rt/drivers-tty-fix-omap-lock-crap.patch @@ -1,7 +1,7 @@ Subject: tty/serial/omap: Make the locking RT aware From: Thomas Gleixner Date: Thu, 28 Jul 2011 13:32:57 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The lock is a sleeping lock and local_irq_save() is not the optimsation we are looking for. Redo it to make it work on -RT and diff --git a/debian/patches/features/all/rt/drivers-tty-pl011-irq-disable-madness.patch b/debian/patches/features/all/rt/drivers-tty-pl011-irq-disable-madness.patch index 8b58ce1d6..7ed1b0aae 100644 --- a/debian/patches/features/all/rt/drivers-tty-pl011-irq-disable-madness.patch +++ b/debian/patches/features/all/rt/drivers-tty-pl011-irq-disable-madness.patch @@ -1,7 +1,7 @@ Subject: tty/serial/pl011: Make the locking work on RT From: Thomas Gleixner Date: Tue, 08 Jan 2013 21:36:51 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The lock is a sleeping lock and local_irq_save() is not the optimsation we are looking for. Redo it to make it work on -RT and non-RT. diff --git a/debian/patches/features/all/rt/drivers-zram-Don-t-disable-preemption-in-zcomp_strea.patch b/debian/patches/features/all/rt/drivers-zram-Don-t-disable-preemption-in-zcomp_strea.patch index db3b2a96c..401807629 100644 --- a/debian/patches/features/all/rt/drivers-zram-Don-t-disable-preemption-in-zcomp_strea.patch +++ b/debian/patches/features/all/rt/drivers-zram-Don-t-disable-preemption-in-zcomp_strea.patch @@ -2,7 +2,7 @@ From: Mike Galbraith Date: Thu, 20 Oct 2016 11:15:22 +0200 Subject: [PATCH] drivers/zram: Don't disable preemption in zcomp_stream_get/put() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz In v4.7, the driver switched to percpu compression streams, disabling preemption via get/put_cpu_ptr(). Use a per-zcomp_strm lock here. We diff --git a/debian/patches/features/all/rt/drivers-zram-fix-zcomp_stream_get-smp_processor_id-u.patch b/debian/patches/features/all/rt/drivers-zram-fix-zcomp_stream_get-smp_processor_id-u.patch index 1c719636b..7f59e2c6f 100644 --- a/debian/patches/features/all/rt/drivers-zram-fix-zcomp_stream_get-smp_processor_id-u.patch +++ b/debian/patches/features/all/rt/drivers-zram-fix-zcomp_stream_get-smp_processor_id-u.patch @@ -2,7 +2,7 @@ From: Mike Galbraith Date: Wed, 23 Aug 2017 11:57:29 +0200 Subject: [PATCH] drivers/zram: fix zcomp_stream_get() smp_processor_id() use in preemptible code -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Use get_local_ptr() instead this_cpu_ptr() to avoid a warning regarding smp_processor_id() in preemptible code. diff --git a/debian/patches/features/all/rt/drm-i915-properly-init-lockdep-class.patch b/debian/patches/features/all/rt/drm-i915-properly-init-lockdep-class.patch index 5ea45c082..f8c4db108 100644 --- a/debian/patches/features/all/rt/drm-i915-properly-init-lockdep-class.patch +++ b/debian/patches/features/all/rt/drm-i915-properly-init-lockdep-class.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 30 Nov 2017 16:06:13 +0100 Subject: [PATCH] drm/i915: properly init lockdep class -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The code has an ifdef and uses two functions to either init the bare spinlock or init it and set a lock-class. It is possible to do the same diff --git a/debian/patches/features/all/rt/drmi915_Use_local_lockunlock_irq()_in_intel_pipe_update_startend().patch b/debian/patches/features/all/rt/drmi915_Use_local_lockunlock_irq()_in_intel_pipe_update_startend().patch index d636dbd44..6feb21a9b 100644 --- a/debian/patches/features/all/rt/drmi915_Use_local_lockunlock_irq()_in_intel_pipe_update_startend().patch +++ b/debian/patches/features/all/rt/drmi915_Use_local_lockunlock_irq()_in_intel_pipe_update_startend().patch @@ -1,7 +1,7 @@ Subject: drm,i915: Use local_lock/unlock_irq() in intel_pipe_update_start/end() From: Mike Galbraith Date: Sat, 27 Feb 2016 09:01:42 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz [ 8.014039] BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:918 diff --git a/debian/patches/features/all/rt/drmradeoni915_Use_preempt_disableenable_rt()_where_recommended.patch b/debian/patches/features/all/rt/drmradeoni915_Use_preempt_disableenable_rt()_where_recommended.patch index 666202f80..088a50237 100644 --- a/debian/patches/features/all/rt/drmradeoni915_Use_preempt_disableenable_rt()_where_recommended.patch +++ b/debian/patches/features/all/rt/drmradeoni915_Use_preempt_disableenable_rt()_where_recommended.patch @@ -1,7 +1,7 @@ Subject: drm,radeon,i915: Use preempt_disable/enable_rt() where recommended From: Mike Galbraith Date: Sat, 27 Feb 2016 08:09:11 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz DRM folks identified the spots, so use them. diff --git a/debian/patches/features/all/rt/epoll-use-get-cpu-light.patch b/debian/patches/features/all/rt/epoll-use-get-cpu-light.patch index d02314694..ac3b3b231 100644 --- a/debian/patches/features/all/rt/epoll-use-get-cpu-light.patch +++ b/debian/patches/features/all/rt/epoll-use-get-cpu-light.patch @@ -1,7 +1,7 @@ Subject: fs/epoll: Do not disable preemption on RT From: Thomas Gleixner Date: Fri, 08 Jul 2011 16:35:35 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz ep_call_nested() takes a sleeping lock so we can't disable preemption. The light version is enough since ep_call_nested() doesn't mind beeing diff --git a/debian/patches/features/all/rt/fs-aio-simple-simple-work.patch b/debian/patches/features/all/rt/fs-aio-simple-simple-work.patch index 35168fcdc..b09f9796e 100644 --- a/debian/patches/features/all/rt/fs-aio-simple-simple-work.patch +++ b/debian/patches/features/all/rt/fs-aio-simple-simple-work.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Mon, 16 Feb 2015 18:49:10 +0100 Subject: fs/aio: simple simple work -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz |BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:768 |in_atomic(): 1, irqs_disabled(): 0, pid: 26, name: rcuos/2 diff --git a/debian/patches/features/all/rt/fs-block-rt-support.patch b/debian/patches/features/all/rt/fs-block-rt-support.patch index df09e6448..954d016f9 100644 --- a/debian/patches/features/all/rt/fs-block-rt-support.patch +++ b/debian/patches/features/all/rt/fs-block-rt-support.patch @@ -1,7 +1,7 @@ Subject: block: Turn off warning which is bogus on RT From: Thomas Gleixner Date: Tue, 14 Jun 2011 17:05:09 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz On -RT the context is always with IRQs enabled. Ignore this warning on -RT. diff --git a/debian/patches/features/all/rt/fs-dcache-bringt-back-explicit-INIT_HLIST_BL_HEAD-in.patch b/debian/patches/features/all/rt/fs-dcache-bringt-back-explicit-INIT_HLIST_BL_HEAD-in.patch index e8f7e0394..36582e10b 100644 --- a/debian/patches/features/all/rt/fs-dcache-bringt-back-explicit-INIT_HLIST_BL_HEAD-in.patch +++ b/debian/patches/features/all/rt/fs-dcache-bringt-back-explicit-INIT_HLIST_BL_HEAD-in.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 13 Sep 2017 12:32:34 +0200 Subject: [PATCH] fs/dcache: bringt back explicit INIT_HLIST_BL_HEAD init -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Commit 3d375d78593c ("mm: update callers to use HASH_ZERO flag") removed INIT_HLIST_BL_HEAD and uses the ZERO flag instead for the init. However diff --git a/debian/patches/features/all/rt/fs-dcache-disable-preemption-on-i_dir_seq-s-write-si.patch b/debian/patches/features/all/rt/fs-dcache-disable-preemption-on-i_dir_seq-s-write-si.patch index 659aaf36d..d0612224c 100644 --- a/debian/patches/features/all/rt/fs-dcache-disable-preemption-on-i_dir_seq-s-write-si.patch +++ b/debian/patches/features/all/rt/fs-dcache-disable-preemption-on-i_dir_seq-s-write-si.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 20 Oct 2017 11:29:53 +0200 Subject: [PATCH] fs/dcache: disable preemption on i_dir_seq's write side -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz i_dir_seq is an opencoded seqcounter. Based on the code it looks like we could have two writers in parallel despite the fact that the d_lock is diff --git a/debian/patches/features/all/rt/fs-dcache-use-cpu-chill-in-trylock-loops.patch b/debian/patches/features/all/rt/fs-dcache-use-cpu-chill-in-trylock-loops.patch index f6fdfb242..a293d6648 100644 --- a/debian/patches/features/all/rt/fs-dcache-use-cpu-chill-in-trylock-loops.patch +++ b/debian/patches/features/all/rt/fs-dcache-use-cpu-chill-in-trylock-loops.patch @@ -1,7 +1,7 @@ Subject: fs: dcache: Use cpu_chill() in trylock loops From: Thomas Gleixner Date: Wed, 07 Mar 2012 21:00:34 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Retry loops on RT might loop forever when the modifying side was preempted. Use cpu_chill() instead of cpu_relax() to let the system diff --git a/debian/patches/features/all/rt/fs-dcache-use-swait_queue-instead-of-waitqueue.patch b/debian/patches/features/all/rt/fs-dcache-use-swait_queue-instead-of-waitqueue.patch index e816d4da8..a2df33383 100644 --- a/debian/patches/features/all/rt/fs-dcache-use-swait_queue-instead-of-waitqueue.patch +++ b/debian/patches/features/all/rt/fs-dcache-use-swait_queue-instead-of-waitqueue.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 14 Sep 2016 14:35:49 +0200 Subject: [PATCH] fs/dcache: use swait_queue instead of waitqueue -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz __d_lookup_done() invokes wake_up_all() while holding a hlist_bl_lock() which disables preemption. As a workaround convert it to swait. diff --git a/debian/patches/features/all/rt/fs-jbd-replace-bh_state-lock.patch b/debian/patches/features/all/rt/fs-jbd-replace-bh_state-lock.patch index 808253ba4..93f740a48 100644 --- a/debian/patches/features/all/rt/fs-jbd-replace-bh_state-lock.patch +++ b/debian/patches/features/all/rt/fs-jbd-replace-bh_state-lock.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Fri, 18 Mar 2011 10:11:25 +0100 Subject: fs: jbd/jbd2: Make state lock and journal head lock rt safe -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz bit_spin_locks break under RT. diff --git a/debian/patches/features/all/rt/fs-jbd2-pull-your-plug-when-waiting-for-space.patch b/debian/patches/features/all/rt/fs-jbd2-pull-your-plug-when-waiting-for-space.patch index 4efe2012a..df47a3298 100644 --- a/debian/patches/features/all/rt/fs-jbd2-pull-your-plug-when-waiting-for-space.patch +++ b/debian/patches/features/all/rt/fs-jbd2-pull-your-plug-when-waiting-for-space.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Mon, 17 Feb 2014 17:30:03 +0100 Subject: fs: jbd2: pull your plug when waiting for space -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Two cps in parallel managed to stall the the ext4 fs. It seems that journal code is either waiting for locks or sleeping waiting for diff --git a/debian/patches/features/all/rt/fs-namespace-preemption-fix.patch b/debian/patches/features/all/rt/fs-namespace-preemption-fix.patch index 229daed64..144c09365 100644 --- a/debian/patches/features/all/rt/fs-namespace-preemption-fix.patch +++ b/debian/patches/features/all/rt/fs-namespace-preemption-fix.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Sun, 19 Jul 2009 08:44:27 -0500 Subject: fs: namespace preemption fix -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz On RT we cannot loop with preemption disabled here as mnt_make_readonly() might have been preempted. We can safely enable diff --git a/debian/patches/features/all/rt/fs-nfs-turn-rmdir_sem-into-a-semaphore.patch b/debian/patches/features/all/rt/fs-nfs-turn-rmdir_sem-into-a-semaphore.patch index bd39225ad..a9424ee3c 100644 --- a/debian/patches/features/all/rt/fs-nfs-turn-rmdir_sem-into-a-semaphore.patch +++ b/debian/patches/features/all/rt/fs-nfs-turn-rmdir_sem-into-a-semaphore.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 15 Sep 2016 10:51:27 +0200 Subject: [PATCH] fs/nfs: turn rmdir_sem into a semaphore -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The RW semaphore had a reader side which used the _non_owner version because it most likely took the reader lock in one thread and released it diff --git a/debian/patches/features/all/rt/fs-ntfs-disable-interrupt-non-rt.patch b/debian/patches/features/all/rt/fs-ntfs-disable-interrupt-non-rt.patch index e8521f12e..a139ac8b0 100644 --- a/debian/patches/features/all/rt/fs-ntfs-disable-interrupt-non-rt.patch +++ b/debian/patches/features/all/rt/fs-ntfs-disable-interrupt-non-rt.patch @@ -1,7 +1,7 @@ From: Mike Galbraith Date: Fri, 3 Jul 2009 08:44:12 -0500 Subject: fs: ntfs: disable interrupt only on !RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz On Sat, 2007-10-27 at 11:44 +0200, Ingo Molnar wrote: > * Nick Piggin wrote: diff --git a/debian/patches/features/all/rt/fs-replace-bh_uptodate_lock-for-rt.patch b/debian/patches/features/all/rt/fs-replace-bh_uptodate_lock-for-rt.patch index 5700408f3..9a1415b04 100644 --- a/debian/patches/features/all/rt/fs-replace-bh_uptodate_lock-for-rt.patch +++ b/debian/patches/features/all/rt/fs-replace-bh_uptodate_lock-for-rt.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Fri, 18 Mar 2011 09:18:52 +0100 Subject: buffer_head: Replace bh_uptodate_lock for -rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Wrap the bit_spin_lock calls into a separate inline and add the RT replacements with a real spinlock. diff --git a/debian/patches/features/all/rt/ftrace-Fix-trace-header-alignment.patch b/debian/patches/features/all/rt/ftrace-Fix-trace-header-alignment.patch index c6e1e8b22..18f7d1284 100644 --- a/debian/patches/features/all/rt/ftrace-Fix-trace-header-alignment.patch +++ b/debian/patches/features/all/rt/ftrace-Fix-trace-header-alignment.patch @@ -1,7 +1,7 @@ From: Mike Galbraith Date: Sun, 16 Oct 2016 05:08:30 +0200 Subject: [PATCH] ftrace: Fix trace header alignment -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Line up helper arrows to the right column. diff --git a/debian/patches/features/all/rt/ftrace-migrate-disable-tracing.patch b/debian/patches/features/all/rt/ftrace-migrate-disable-tracing.patch index 0df2fbb7a..566d2ad51 100644 --- a/debian/patches/features/all/rt/ftrace-migrate-disable-tracing.patch +++ b/debian/patches/features/all/rt/ftrace-migrate-disable-tracing.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Sun, 17 Jul 2011 21:56:42 +0200 Subject: trace: Add migrate-disabled counter to tracing output -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Signed-off-by: Thomas Gleixner --- diff --git a/debian/patches/features/all/rt/futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch b/debian/patches/features/all/rt/futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch index 932234c3f..eac86f27c 100644 --- a/debian/patches/features/all/rt/futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch +++ b/debian/patches/features/all/rt/futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Fri, 1 Mar 2013 11:17:42 +0100 Subject: futex: Ensure lock/unlock symetry versus pi_lock and hash bucket lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz In exit_pi_state_list() we have the following locking construct: diff --git a/debian/patches/features/all/rt/futex-requeue-pi-fix.patch b/debian/patches/features/all/rt/futex-requeue-pi-fix.patch index 1164e3e4d..364e2c4d6 100644 --- a/debian/patches/features/all/rt/futex-requeue-pi-fix.patch +++ b/debian/patches/features/all/rt/futex-requeue-pi-fix.patch @@ -1,7 +1,7 @@ From: Steven Rostedt Date: Tue, 14 Jul 2015 14:26:34 +0200 Subject: futex: Fix bug on when a requeued RT task times out -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Requeue with timeout causes a bug with PREEMPT_RT_FULL. diff --git a/debian/patches/features/all/rt/futex-workaround-migrate_disable-enable-in-different.patch b/debian/patches/features/all/rt/futex-workaround-migrate_disable-enable-in-different.patch index e728f9ee5..4e090be26 100644 --- a/debian/patches/features/all/rt/futex-workaround-migrate_disable-enable-in-different.patch +++ b/debian/patches/features/all/rt/futex-workaround-migrate_disable-enable-in-different.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Wed, 8 Mar 2017 14:23:35 +0100 Subject: [PATCH] futex: workaround migrate_disable/enable in different context -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz migrate_disable()/migrate_enable() takes a different path in atomic() vs !atomic() context. These little hacks ensure that we don't underflow / overflow diff --git a/debian/patches/features/all/rt/genirq-disable-irqpoll-on-rt.patch b/debian/patches/features/all/rt/genirq-disable-irqpoll-on-rt.patch index f079c209f..d3cf1b071 100644 --- a/debian/patches/features/all/rt/genirq-disable-irqpoll-on-rt.patch +++ b/debian/patches/features/all/rt/genirq-disable-irqpoll-on-rt.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:29:57 -0500 Subject: genirq: Disable irqpoll on -rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Creates long latencies for no value diff --git a/debian/patches/features/all/rt/genirq-do-not-invoke-the-affinity-callback-via-a-wor.patch b/debian/patches/features/all/rt/genirq-do-not-invoke-the-affinity-callback-via-a-wor.patch index 31c5f5751..9b94ff1b1 100644 --- a/debian/patches/features/all/rt/genirq-do-not-invoke-the-affinity-callback-via-a-wor.patch +++ b/debian/patches/features/all/rt/genirq-do-not-invoke-the-affinity-callback-via-a-wor.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 21 Aug 2013 17:48:46 +0200 Subject: genirq: Do not invoke the affinity callback via a workqueue on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Joe Korty reported, that __irq_set_affinity_locked() schedules a workqueue while holding a rawlock which results in a might_sleep() diff --git a/debian/patches/features/all/rt/genirq-force-threading.patch b/debian/patches/features/all/rt/genirq-force-threading.patch index 42a4e078f..01603da06 100644 --- a/debian/patches/features/all/rt/genirq-force-threading.patch +++ b/debian/patches/features/all/rt/genirq-force-threading.patch @@ -1,7 +1,7 @@ Subject: genirq: Force interrupt thread on RT From: Thomas Gleixner Date: Sun, 03 Apr 2011 11:57:29 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Force threaded_irqs and optimize the code (force_irqthreads) in regard to this. diff --git a/debian/patches/features/all/rt/genirq-update-irq_set_irqchip_state-documentation.patch b/debian/patches/features/all/rt/genirq-update-irq_set_irqchip_state-documentation.patch index d13ab49c7..4b135a533 100644 --- a/debian/patches/features/all/rt/genirq-update-irq_set_irqchip_state-documentation.patch +++ b/debian/patches/features/all/rt/genirq-update-irq_set_irqchip_state-documentation.patch @@ -1,7 +1,7 @@ From: Josh Cartwright Date: Thu, 11 Feb 2016 11:54:00 -0600 Subject: genirq: update irq_set_irqchip_state documentation -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz On -rt kernels, the use of migrate_disable()/migrate_enable() is sufficient to guarantee a task isn't moved to another CPU. Update the diff --git a/debian/patches/features/all/rt/greybus-audio-don-t-inclide-rwlock.h-directly.patch b/debian/patches/features/all/rt/greybus-audio-don-t-inclide-rwlock.h-directly.patch index b68c8967a..7556dce65 100644 --- a/debian/patches/features/all/rt/greybus-audio-don-t-inclide-rwlock.h-directly.patch +++ b/debian/patches/features/all/rt/greybus-audio-don-t-inclide-rwlock.h-directly.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 5 Oct 2017 14:38:52 +0200 Subject: [PATCH] greybus: audio: don't inclide rwlock.h directly. -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz rwlock.h should not be included directly. Instead linux/splinlock.h should be included. One thing it does is to break the RT build. diff --git a/debian/patches/features/all/rt/hotplug-duct-tape-RT-rwlock-usage-for-non-RT.patch b/debian/patches/features/all/rt/hotplug-duct-tape-RT-rwlock-usage-for-non-RT.patch index fa51ed378..e01630c06 100644 --- a/debian/patches/features/all/rt/hotplug-duct-tape-RT-rwlock-usage-for-non-RT.patch +++ b/debian/patches/features/all/rt/hotplug-duct-tape-RT-rwlock-usage-for-non-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 4 Aug 2017 18:31:00 +0200 Subject: [PATCH] hotplug: duct-tape RT-rwlock usage for non-RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz This type is only available on -RT. We need to craft something for non-RT. Since the only migrate_disable() user is -RT only, there is no diff --git a/debian/patches/features/all/rt/hotplug-light-get-online-cpus.patch b/debian/patches/features/all/rt/hotplug-light-get-online-cpus.patch index 889af4d20..f44d9fe50 100644 --- a/debian/patches/features/all/rt/hotplug-light-get-online-cpus.patch +++ b/debian/patches/features/all/rt/hotplug-light-get-online-cpus.patch @@ -1,7 +1,7 @@ Subject: hotplug: Lightweight get online cpus From: Thomas Gleixner Date: Wed, 15 Jun 2011 12:36:06 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz get_online_cpus() is a heavy weight function which involves a global mutex. migrate_disable() wants a simpler construct which prevents only diff --git a/debian/patches/features/all/rt/hrtimer-Move-schedule_work-call-to-helper-thread.patch b/debian/patches/features/all/rt/hrtimer-Move-schedule_work-call-to-helper-thread.patch index 50a6301e0..95a9cf321 100644 --- a/debian/patches/features/all/rt/hrtimer-Move-schedule_work-call-to-helper-thread.patch +++ b/debian/patches/features/all/rt/hrtimer-Move-schedule_work-call-to-helper-thread.patch @@ -1,7 +1,7 @@ From: Yang Shi Date: Mon, 16 Sep 2013 14:09:19 -0700 Subject: hrtimer: Move schedule_work call to helper thread -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz When run ltp leapsec_timer test, the following call trace is caught: diff --git a/debian/patches/features/all/rt/hrtimer-by-timers-by-default-into-the-softirq-context.patch b/debian/patches/features/all/rt/hrtimer-by-timers-by-default-into-the-softirq-context.patch index e86535ed2..2b979ee2d 100644 --- a/debian/patches/features/all/rt/hrtimer-by-timers-by-default-into-the-softirq-context.patch +++ b/debian/patches/features/all/rt/hrtimer-by-timers-by-default-into-the-softirq-context.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 3 Jul 2009 08:44:31 -0500 Subject: hrtimer: by timers by default into the softirq context -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz We can't have hrtimers callbacks running in hardirq context on RT. Therefore the timers are deferred to the softirq context by default. @@ -115,17 +115,16 @@ Signed-off-by: Sebastian Andrzej Siewior --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c -@@ -422,8 +422,10 @@ static inline void debug_hrtimer_activat +@@ -1122,7 +1122,9 @@ void hrtimer_start_range_ns(struct hrtim * Check whether the HRTIMER_MODE_SOFT bit and hrtimer.is_soft - * match, when a timer is started via__hrtimer_start_range_ns(). + * match. */ +#ifndef CONFIG_PREEMPT_RT_BASE - if (modecheck) - WARN_ON_ONCE(!(mode & HRTIMER_MODE_SOFT) ^ !timer->is_soft); + WARN_ON_ONCE(!(mode & HRTIMER_MODE_SOFT) ^ !timer->is_soft); +#endif - debug_object_activate(timer, &hrtimer_debug_descr); - } + base = lock_hrtimer_base(timer, &flags); + @@ -1249,10 +1251,17 @@ static inline int hrtimer_clockid_to_bas static void __hrtimer_init(struct hrtimer *timer, clockid_t clock_id, enum hrtimer_mode mode) @@ -146,7 +145,7 @@ Signed-off-by: Sebastian Andrzej Siewior memset(timer, 0, sizeof(struct hrtimer)); cpu_base = raw_cpu_ptr(&hrtimer_bases); -@@ -1632,11 +1641,32 @@ static enum hrtimer_restart hrtimer_wake +@@ -1631,11 +1640,32 @@ static enum hrtimer_restart hrtimer_wake return HRTIMER_NORESTART; } diff --git a/debian/patches/features/all/rt/hrtimer-consolidate-hrtimer_init-hrtimer_init_sleepe.patch b/debian/patches/features/all/rt/hrtimer-consolidate-hrtimer_init-hrtimer_init_sleepe.patch index c03da25dd..1c1ec6cfc 100644 --- a/debian/patches/features/all/rt/hrtimer-consolidate-hrtimer_init-hrtimer_init_sleepe.patch +++ b/debian/patches/features/all/rt/hrtimer-consolidate-hrtimer_init-hrtimer_init_sleepe.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Mon, 4 Sep 2017 18:31:50 +0200 Subject: [PATCH] hrtimer: consolidate hrtimer_init() + hrtimer_init_sleeper() calls -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz hrtimer_init_sleeper() calls require a prior initialisation of the hrtimer object with hrtimer_init(). Lets make the initialisation of the diff --git a/debian/patches/features/all/rt/hrtimers-prepare-full-preemption.patch b/debian/patches/features/all/rt/hrtimers-prepare-full-preemption.patch index 53eb0f63e..5899ffa4a 100644 --- a/debian/patches/features/all/rt/hrtimers-prepare-full-preemption.patch +++ b/debian/patches/features/all/rt/hrtimers-prepare-full-preemption.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:29:34 -0500 Subject: hrtimers: Prepare full preemption -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Make cancellation of a running callback in softirq context safe against preemption. diff --git a/debian/patches/features/all/rt/ide-use-nort-local-irq-variants.patch b/debian/patches/features/all/rt/ide-use-nort-local-irq-variants.patch index b514b8a26..772a016bb 100644 --- a/debian/patches/features/all/rt/ide-use-nort-local-irq-variants.patch +++ b/debian/patches/features/all/rt/ide-use-nort-local-irq-variants.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:30:16 -0500 Subject: ide: Do not disable interrupts for PREEMPT-RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Use the local_irq_*_nort variants. diff --git a/debian/patches/features/all/rt/infiniband-mellanox-ib-use-nort-irq.patch b/debian/patches/features/all/rt/infiniband-mellanox-ib-use-nort-irq.patch index 2a4f560c1..c1615b7d0 100644 --- a/debian/patches/features/all/rt/infiniband-mellanox-ib-use-nort-irq.patch +++ b/debian/patches/features/all/rt/infiniband-mellanox-ib-use-nort-irq.patch @@ -1,7 +1,7 @@ From: Sven-Thorsten Dietrich Date: Fri, 3 Jul 2009 08:30:35 -0500 Subject: infiniband: Mellanox IB driver patch use _nort() primitives -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Fixes in_atomic stack-dump, when Mellanox module is loaded into the RT Kernel. diff --git a/debian/patches/features/all/rt/inpt-gameport-use-local-irq-nort.patch b/debian/patches/features/all/rt/inpt-gameport-use-local-irq-nort.patch index ac5cfcf06..84e2fe57a 100644 --- a/debian/patches/features/all/rt/inpt-gameport-use-local-irq-nort.patch +++ b/debian/patches/features/all/rt/inpt-gameport-use-local-irq-nort.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:30:16 -0500 Subject: input: gameport: Do not disable interrupts on PREEMPT_RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Use the _nort() primitives. diff --git a/debian/patches/features/all/rt/iommu-amd--Use-WARN_ON_NORT.patch b/debian/patches/features/all/rt/iommu-amd--Use-WARN_ON_NORT.patch index b1168eea5..e4fc57378 100644 --- a/debian/patches/features/all/rt/iommu-amd--Use-WARN_ON_NORT.patch +++ b/debian/patches/features/all/rt/iommu-amd--Use-WARN_ON_NORT.patch @@ -1,7 +1,7 @@ Subject: iommu/amd: Use WARN_ON_NORT in __attach_device() From: Thomas Gleixner Date: Sat, 27 Feb 2016 10:22:23 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz RT does not disable interrupts here, but the protection is still correct. Fixup the WARN_ON so it won't yell on RT. diff --git a/debian/patches/features/all/rt/iommu-iova-Use-raw_cpu_ptr-instead-of-get_cpu_ptr-fo.patch b/debian/patches/features/all/rt/iommu-iova-Use-raw_cpu_ptr-instead-of-get_cpu_ptr-fo.patch index 284b6b8eb..b3a40d4db 100644 --- a/debian/patches/features/all/rt/iommu-iova-Use-raw_cpu_ptr-instead-of-get_cpu_ptr-fo.patch +++ b/debian/patches/features/all/rt/iommu-iova-Use-raw_cpu_ptr-instead-of-get_cpu_ptr-fo.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 21 Sep 2017 17:21:40 +0200 Subject: [PATCH] iommu/iova: Use raw_cpu_ptr() instead of get_cpu_ptr() for ->fq -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz get_cpu_ptr() disabled preemption and returns the ->fq object of the current CPU. raw_cpu_ptr() does the same except that it not disable diff --git a/debian/patches/features/all/rt/irq-allow-disabling-of-softirq-processing-in-irq-thread-context.patch b/debian/patches/features/all/rt/irq-allow-disabling-of-softirq-processing-in-irq-thread-context.patch index e6c830dfb..6efb96bb6 100644 --- a/debian/patches/features/all/rt/irq-allow-disabling-of-softirq-processing-in-irq-thread-context.patch +++ b/debian/patches/features/all/rt/irq-allow-disabling-of-softirq-processing-in-irq-thread-context.patch @@ -1,7 +1,7 @@ Subject: genirq: Allow disabling of softirq processing in irq thread context From: Thomas Gleixner Date: Tue, 31 Jan 2012 13:01:27 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The processing of softirqs in irq thread context is a performance gain for the non-rt workloads of a system, but it's counterproductive for diff --git a/debian/patches/features/all/rt/irqwork-Move-irq-safe-work-to-irq-context.patch b/debian/patches/features/all/rt/irqwork-Move-irq-safe-work-to-irq-context.patch index 08d1b0cd9..73fb32868 100644 --- a/debian/patches/features/all/rt/irqwork-Move-irq-safe-work-to-irq-context.patch +++ b/debian/patches/features/all/rt/irqwork-Move-irq-safe-work-to-irq-context.patch @@ -1,7 +1,7 @@ Subject: irqwork: Move irq safe work to irq context From: Thomas Gleixner Date: Sun, 15 Nov 2015 18:40:17 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz On architectures where arch_irq_work_has_interrupt() returns false, we end up running the irq safe work from the softirq context. That diff --git a/debian/patches/features/all/rt/irqwork-push_most_work_into_softirq_context.patch b/debian/patches/features/all/rt/irqwork-push_most_work_into_softirq_context.patch index 0c7dc484a..e20fe4f6e 100644 --- a/debian/patches/features/all/rt/irqwork-push_most_work_into_softirq_context.patch +++ b/debian/patches/features/all/rt/irqwork-push_most_work_into_softirq_context.patch @@ -1,7 +1,7 @@ Subject: irqwork: push most work into softirq context From: Sebastian Andrzej Siewior Date: Tue, 23 Jun 2015 15:32:51 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Initially we defered all irqwork into softirq because we didn't want the latency spikes if perf or another user was busy and delayed the RT task. diff --git a/debian/patches/features/all/rt/jump-label-rt.patch b/debian/patches/features/all/rt/jump-label-rt.patch index ad0ceec58..b4c9d4815 100644 --- a/debian/patches/features/all/rt/jump-label-rt.patch +++ b/debian/patches/features/all/rt/jump-label-rt.patch @@ -1,7 +1,7 @@ Subject: jump-label: disable if stop_machine() is used From: Thomas Gleixner Date: Wed, 08 Jul 2015 17:14:48 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Some architectures are using stop_machine() while switching the opcode which leads to latency spikes. diff --git a/debian/patches/features/all/rt/kconfig-disable-a-few-options-rt.patch b/debian/patches/features/all/rt/kconfig-disable-a-few-options-rt.patch index 30df0bef2..f88ae4e9e 100644 --- a/debian/patches/features/all/rt/kconfig-disable-a-few-options-rt.patch +++ b/debian/patches/features/all/rt/kconfig-disable-a-few-options-rt.patch @@ -1,7 +1,7 @@ Subject: kconfig: Disable config options which are not RT compatible From: Thomas Gleixner Date: Sun, 24 Jul 2011 12:11:43 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Disable stuff which is known to have issues on RT diff --git a/debian/patches/features/all/rt/kconfig-preempt-rt-full.patch b/debian/patches/features/all/rt/kconfig-preempt-rt-full.patch index da8341994..2011bcf98 100644 --- a/debian/patches/features/all/rt/kconfig-preempt-rt-full.patch +++ b/debian/patches/features/all/rt/kconfig-preempt-rt-full.patch @@ -1,7 +1,7 @@ Subject: kconfig: Add PREEMPT_RT_FULL From: Thomas Gleixner Date: Wed, 29 Jun 2011 14:58:57 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Introduce the final symbol for PREEMPT_RT_FULL. diff --git a/debian/patches/features/all/rt/kernel-SRCU-provide-a-static-initializer.patch b/debian/patches/features/all/rt/kernel-SRCU-provide-a-static-initializer.patch index cd432217d..02dec5d8d 100644 --- a/debian/patches/features/all/rt/kernel-SRCU-provide-a-static-initializer.patch +++ b/debian/patches/features/all/rt/kernel-SRCU-provide-a-static-initializer.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Tue, 19 Mar 2013 14:44:30 +0100 Subject: kernel/SRCU: provide a static initializer -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz There are macros for static initializer for the three out of four possible notifier types, that are: diff --git a/debian/patches/features/all/rt/kernel-printk-Don-t-try-to-print-from-IRQ-NMI-region.patch b/debian/patches/features/all/rt/kernel-printk-Don-t-try-to-print-from-IRQ-NMI-region.patch index e0d500a99..9d86ff7a1 100644 --- a/debian/patches/features/all/rt/kernel-printk-Don-t-try-to-print-from-IRQ-NMI-region.patch +++ b/debian/patches/features/all/rt/kernel-printk-Don-t-try-to-print-from-IRQ-NMI-region.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 19 May 2016 17:45:27 +0200 Subject: [PATCH] kernel/printk: Don't try to print from IRQ/NMI region -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz On -RT we try to acquire sleeping locks which might lead to warnings from lockdep or a warn_on() from spin_try_lock() (which is a rtmutex on diff --git a/debian/patches/features/all/rt/kernel-sched-Provide-a-pointer-to-the-valid-CPU-mask.patch b/debian/patches/features/all/rt/kernel-sched-Provide-a-pointer-to-the-valid-CPU-mask.patch index b206abc3a..5c08f5180 100644 --- a/debian/patches/features/all/rt/kernel-sched-Provide-a-pointer-to-the-valid-CPU-mask.patch +++ b/debian/patches/features/all/rt/kernel-sched-Provide-a-pointer-to-the-valid-CPU-mask.patch @@ -4,7 +4,7 @@ Subject: [PATCH] kernel: sched: Provide a pointer to the valid CPU mask MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz In commit 4b53a3412d66 ("sched/core: Remove the tsk_nr_cpus_allowed() wrapper") the tsk_nr_cpus_allowed() wrapper was removed. There was not diff --git a/debian/patches/features/all/rt/kernel-sched-move-stack-kprobe-clean-up-to-__put_tas.patch b/debian/patches/features/all/rt/kernel-sched-move-stack-kprobe-clean-up-to-__put_tas.patch index f8260c9f8..b9165de62 100644 --- a/debian/patches/features/all/rt/kernel-sched-move-stack-kprobe-clean-up-to-__put_tas.patch +++ b/debian/patches/features/all/rt/kernel-sched-move-stack-kprobe-clean-up-to-__put_tas.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Mon, 21 Nov 2016 19:31:08 +0100 Subject: [PATCH] kernel/sched: move stack + kprobe clean up to __put_task_struct() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz There is no need to free the stack before the task struct. This also comes handy on -RT because we can't free memory in preempt disabled diff --git a/debian/patches/features/all/rt/kernel-softirq-unlock-with-irqs-on.patch b/debian/patches/features/all/rt/kernel-softirq-unlock-with-irqs-on.patch index e686e61fc..64817cfc9 100644 --- a/debian/patches/features/all/rt/kernel-softirq-unlock-with-irqs-on.patch +++ b/debian/patches/features/all/rt/kernel-softirq-unlock-with-irqs-on.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Tue, 9 Feb 2016 18:17:18 +0100 Subject: kernel: softirq: unlock with irqs on -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz We unlock the lock while the interrupts are off. This isn't a problem now but will get because the migrate_disable() + enable are not diff --git a/debian/patches/features/all/rt/kgb-serial-hackaround.patch b/debian/patches/features/all/rt/kgb-serial-hackaround.patch index dc59d06d5..23a06f7d6 100644 --- a/debian/patches/features/all/rt/kgb-serial-hackaround.patch +++ b/debian/patches/features/all/rt/kgb-serial-hackaround.patch @@ -1,7 +1,7 @@ From: Jason Wessel Date: Thu, 28 Jul 2011 12:42:23 -0500 Subject: kgdb/serial: Short term workaround -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz On 07/27/2011 04:37 PM, Thomas Gleixner wrote: > - KGDB (not yet disabled) is reportedly unusable on -rt right now due diff --git a/debian/patches/features/all/rt/leds-trigger-disable-CPU-trigger-on-RT.patch b/debian/patches/features/all/rt/leds-trigger-disable-CPU-trigger-on-RT.patch index f7b7cec66..8924da89d 100644 --- a/debian/patches/features/all/rt/leds-trigger-disable-CPU-trigger-on-RT.patch +++ b/debian/patches/features/all/rt/leds-trigger-disable-CPU-trigger-on-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 23 Jan 2014 14:45:59 +0100 Subject: leds: trigger: disable CPU trigger on -RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz as it triggers: |CPU: 0 PID: 0 Comm: swapper Not tainted 3.12.8-rt10 #141 diff --git a/debian/patches/features/all/rt/list_bl-fixup-bogus-lockdep-warning.patch b/debian/patches/features/all/rt/list_bl-fixup-bogus-lockdep-warning.patch index 523a0ee7b..841a18c99 100644 --- a/debian/patches/features/all/rt/list_bl-fixup-bogus-lockdep-warning.patch +++ b/debian/patches/features/all/rt/list_bl-fixup-bogus-lockdep-warning.patch @@ -1,7 +1,7 @@ From: Josh Cartwright Date: Thu, 31 Mar 2016 00:04:25 -0500 Subject: [PATCH] list_bl: fixup bogus lockdep warning -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz At first glance, the use of 'static inline' seems appropriate for INIT_HLIST_BL_HEAD(). diff --git a/debian/patches/features/all/rt/list_bl.h-make-list-head-locking-RT-safe.patch b/debian/patches/features/all/rt/list_bl.h-make-list-head-locking-RT-safe.patch index 0bde88aef..aecd50c4f 100644 --- a/debian/patches/features/all/rt/list_bl.h-make-list-head-locking-RT-safe.patch +++ b/debian/patches/features/all/rt/list_bl.h-make-list-head-locking-RT-safe.patch @@ -1,7 +1,7 @@ From: Paul Gortmaker Date: Fri, 21 Jun 2013 15:07:25 -0400 Subject: list_bl: Make list head locking RT safe -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz As per changes in include/linux/jbd_common.h for avoiding the bit_spin_locks on RT ("fs: jbd/jbd2: Make state lock and journal diff --git a/debian/patches/features/all/rt/local-irq-rt-depending-variants.patch b/debian/patches/features/all/rt/local-irq-rt-depending-variants.patch index 047039a18..e7891f2d2 100644 --- a/debian/patches/features/all/rt/local-irq-rt-depending-variants.patch +++ b/debian/patches/features/all/rt/local-irq-rt-depending-variants.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Tue, 21 Jul 2009 22:34:14 +0200 Subject: rt: local_irq_* variants depending on RT/!RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Add local_irq_*_(no)rt variant which are mainly used to break interrupt disabled sections on PREEMPT_RT or to explicitely disable diff --git a/debian/patches/features/all/rt/localversion.patch b/debian/patches/features/all/rt/localversion.patch index c097d889d..b69383376 100644 --- a/debian/patches/features/all/rt/localversion.patch +++ b/debian/patches/features/all/rt/localversion.patch @@ -1,7 +1,7 @@ Subject: Add localversion for -RT release From: Thomas Gleixner Date: Fri, 08 Jul 2011 20:25:16 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Signed-off-by: Thomas Gleixner --- @@ -11,4 +11,4 @@ Signed-off-by: Thomas Gleixner --- /dev/null +++ b/localversion-rt @@ -0,0 +1 @@ -+-rt7 ++-rt9 diff --git a/debian/patches/features/all/rt/lockdep-disable-self-test.patch b/debian/patches/features/all/rt/lockdep-disable-self-test.patch index 6c5cfce5d..696772a7c 100644 --- a/debian/patches/features/all/rt/lockdep-disable-self-test.patch +++ b/debian/patches/features/all/rt/lockdep-disable-self-test.patch @@ -4,7 +4,7 @@ Subject: [PATCH] lockdep: disable self-test MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The self-test wasn't always 100% accurate for RT. We disabled a few tests which failed because they had a different semantic for RT. Some diff --git a/debian/patches/features/all/rt/lockdep-no-softirq-accounting-on-rt.patch b/debian/patches/features/all/rt/lockdep-no-softirq-accounting-on-rt.patch index 08b80dc6c..b43e0fc6e 100644 --- a/debian/patches/features/all/rt/lockdep-no-softirq-accounting-on-rt.patch +++ b/debian/patches/features/all/rt/lockdep-no-softirq-accounting-on-rt.patch @@ -1,7 +1,7 @@ Subject: lockdep: Make it RT aware From: Thomas Gleixner Date: Sun, 17 Jul 2011 18:51:23 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz teach lockdep that we don't really do softirqs on -RT. diff --git a/debian/patches/features/all/rt/lockdep-selftest-fix-warnings-due-to-missing-PREEMPT.patch b/debian/patches/features/all/rt/lockdep-selftest-fix-warnings-due-to-missing-PREEMPT.patch index fc97f9173..eac780d15 100644 --- a/debian/patches/features/all/rt/lockdep-selftest-fix-warnings-due-to-missing-PREEMPT.patch +++ b/debian/patches/features/all/rt/lockdep-selftest-fix-warnings-due-to-missing-PREEMPT.patch @@ -1,7 +1,7 @@ From: Josh Cartwright Date: Wed, 28 Jan 2015 13:08:45 -0600 Subject: lockdep: selftest: fix warnings due to missing PREEMPT_RT conditionals -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz "lockdep: Selftest: Only do hardirq context test for raw spinlock" disabled the execution of certain tests with PREEMPT_RT_FULL, but did diff --git a/debian/patches/features/all/rt/lockdep-selftest-only-do-hardirq-context-test-for-raw-spinlock.patch b/debian/patches/features/all/rt/lockdep-selftest-only-do-hardirq-context-test-for-raw-spinlock.patch index 572da91a4..9db303da5 100644 --- a/debian/patches/features/all/rt/lockdep-selftest-only-do-hardirq-context-test-for-raw-spinlock.patch +++ b/debian/patches/features/all/rt/lockdep-selftest-only-do-hardirq-context-test-for-raw-spinlock.patch @@ -1,7 +1,7 @@ Subject: lockdep: selftest: Only do hardirq context test for raw spinlock From: Yong Zhang Date: Mon, 16 Apr 2012 15:01:56 +0800 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz From: Yong Zhang diff --git a/debian/patches/features/all/rt/locking-don-t-check-for-__LINUX_SPINLOCK_TYPES_H-on-.patch b/debian/patches/features/all/rt/locking-don-t-check-for-__LINUX_SPINLOCK_TYPES_H-on-.patch index 28af73fdb..675e8d5bf 100644 --- a/debian/patches/features/all/rt/locking-don-t-check-for-__LINUX_SPINLOCK_TYPES_H-on-.patch +++ b/debian/patches/features/all/rt/locking-don-t-check-for-__LINUX_SPINLOCK_TYPES_H-on-.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 4 Aug 2017 17:40:42 +0200 Subject: [PATCH 1/2] locking: don't check for __LINUX_SPINLOCK_TYPES_H on -RT archs -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Upstream uses arch_spinlock_t within spinlock_t and requests that spinlock_types.h header file is included first. diff --git a/debian/patches/features/all/rt/locking-locktorture-Do-NOT-include-rwlock.h-directly.patch b/debian/patches/features/all/rt/locking-locktorture-Do-NOT-include-rwlock.h-directly.patch index d38bc9220..04cbd31d6 100644 --- a/debian/patches/features/all/rt/locking-locktorture-Do-NOT-include-rwlock.h-directly.patch +++ b/debian/patches/features/all/rt/locking-locktorture-Do-NOT-include-rwlock.h-directly.patch @@ -1,7 +1,7 @@ From: "Wolfgang M. Reimer" Date: Tue, 21 Jul 2015 16:20:07 +0200 Subject: locking: locktorture: Do NOT include rwlock.h directly -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Including rwlock.h directly will cause kernel builds to fail if CONFIG_PREEMPT_RT_FULL is defined. The correct header file diff --git a/debian/patches/features/all/rt/locking-rt-mutex-fix-deadlock-in-device-mapper-block.patch b/debian/patches/features/all/rt/locking-rt-mutex-fix-deadlock-in-device-mapper-block.patch index f0decac8f..002960d38 100644 --- a/debian/patches/features/all/rt/locking-rt-mutex-fix-deadlock-in-device-mapper-block.patch +++ b/debian/patches/features/all/rt/locking-rt-mutex-fix-deadlock-in-device-mapper-block.patch @@ -1,7 +1,7 @@ From: Mikulas Patocka Date: Mon, 13 Nov 2017 12:56:53 -0500 Subject: [PATCH] locking/rt-mutex: fix deadlock in device mapper / block-IO -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz When some block device driver creates a bio and submits it to another block device driver, the bio is added to current->bio_list (in order to diff --git a/debian/patches/features/all/rt/locking-rtmutex-don-t-drop-the-wait_lock-twice.patch b/debian/patches/features/all/rt/locking-rtmutex-don-t-drop-the-wait_lock-twice.patch index e82cbe27b..fb07d8da3 100644 --- a/debian/patches/features/all/rt/locking-rtmutex-don-t-drop-the-wait_lock-twice.patch +++ b/debian/patches/features/all/rt/locking-rtmutex-don-t-drop-the-wait_lock-twice.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 7 Sep 2017 12:38:47 +0200 Subject: locking/rtmutex: don't drop the wait_lock twice -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Since the futex rework, __rt_mutex_start_proxy_lock() does no longer acquire the wait_lock so it must not drop it. Otherwise the lock is not diff --git a/debian/patches/features/all/rt/locking-rtmutex-re-init-the-wait_lock-in-rt_mutex_in.patch b/debian/patches/features/all/rt/locking-rtmutex-re-init-the-wait_lock-in-rt_mutex_in.patch index 957544cfe..4ae60cf1e 100644 --- a/debian/patches/features/all/rt/locking-rtmutex-re-init-the-wait_lock-in-rt_mutex_in.patch +++ b/debian/patches/features/all/rt/locking-rtmutex-re-init-the-wait_lock-in-rt_mutex_in.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 16 Nov 2017 16:48:48 +0100 Subject: [PATCH] locking/rtmutex: re-init the wait_lock in rt_mutex_init_proxy_locked() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz We could provide a key-class for the lockdep (and fixup all callers) or move the init to all callers (like it was) in order to avoid lockdep diff --git a/debian/patches/features/all/rt/md-disable-bcache.patch b/debian/patches/features/all/rt/md-disable-bcache.patch index 3ffac98aa..a12f30848 100644 --- a/debian/patches/features/all/rt/md-disable-bcache.patch +++ b/debian/patches/features/all/rt/md-disable-bcache.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 29 Aug 2013 11:48:57 +0200 Subject: md: disable bcache -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz It uses anon semaphores |drivers/md/bcache/request.c: In function ‘cached_dev_write_complete’: diff --git a/debian/patches/features/all/rt/md-raid5-do-not-disable-interrupts.patch b/debian/patches/features/all/rt/md-raid5-do-not-disable-interrupts.patch index 74e18bd86..5bcd0a662 100644 --- a/debian/patches/features/all/rt/md-raid5-do-not-disable-interrupts.patch +++ b/debian/patches/features/all/rt/md-raid5-do-not-disable-interrupts.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 17 Nov 2017 16:21:00 +0100 Subject: [PATCH] md/raid5: do not disable interrupts -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz |BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:974 |in_atomic(): 0, irqs_disabled(): 1, pid: 2992, name: lvm diff --git a/debian/patches/features/all/rt/md-raid5-percpu-handling-rt-aware.patch b/debian/patches/features/all/rt/md-raid5-percpu-handling-rt-aware.patch index da3cc3e1f..212abb161 100644 --- a/debian/patches/features/all/rt/md-raid5-percpu-handling-rt-aware.patch +++ b/debian/patches/features/all/rt/md-raid5-percpu-handling-rt-aware.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Tue, 6 Apr 2010 16:51:31 +0200 Subject: md: raid5: Make raid5_percpu handling RT aware -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz __raid_run_ops() disables preemption with get_cpu() around the access to the raid5_percpu variables. That causes scheduling while atomic diff --git a/debian/patches/features/all/rt/mfd-syscon-atmel-smc-include-string.h.patch b/debian/patches/features/all/rt/mfd-syscon-atmel-smc-include-string.h.patch index 188b0d4d5..1b937e6b2 100644 --- a/debian/patches/features/all/rt/mfd-syscon-atmel-smc-include-string.h.patch +++ b/debian/patches/features/all/rt/mfd-syscon-atmel-smc-include-string.h.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 4 Oct 2017 09:55:58 +0200 Subject: [PATCH] mfd: syscon: atmel-smc: include string.h -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The string.h header file is needed for the memset() definition. The RT build fails because it is not pulled in via other header files. diff --git a/debian/patches/features/all/rt/mips-disable-highmem-on-rt.patch b/debian/patches/features/all/rt/mips-disable-highmem-on-rt.patch index 5a2c365c0..e08086bec 100644 --- a/debian/patches/features/all/rt/mips-disable-highmem-on-rt.patch +++ b/debian/patches/features/all/rt/mips-disable-highmem-on-rt.patch @@ -1,7 +1,7 @@ Subject: mips: Disable highmem on RT From: Thomas Gleixner Date: Mon, 18 Jul 2011 17:10:12 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The current highmem handling on -RT is not compatible and needs fixups. diff --git a/debian/patches/features/all/rt/mm--rt--Fix-generic-kmap_atomic-for-RT.patch b/debian/patches/features/all/rt/mm--rt--Fix-generic-kmap_atomic-for-RT.patch index bc4c28bec..b66def352 100644 --- a/debian/patches/features/all/rt/mm--rt--Fix-generic-kmap_atomic-for-RT.patch +++ b/debian/patches/features/all/rt/mm--rt--Fix-generic-kmap_atomic-for-RT.patch @@ -1,7 +1,7 @@ Subject: mm: rt: Fix generic kmap_atomic for RT From: Thomas Gleixner Date: Sat, 19 Sep 2015 10:15:00 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The update to 4.1 brought in the mainline variant of the pagefault disable distangling from preempt count. That introduced a diff --git a/debian/patches/features/all/rt/mm-backing-dev-don-t-disable-IRQs-in-wb_congested_pu.patch b/debian/patches/features/all/rt/mm-backing-dev-don-t-disable-IRQs-in-wb_congested_pu.patch index 791df0816..9b48fce66 100644 --- a/debian/patches/features/all/rt/mm-backing-dev-don-t-disable-IRQs-in-wb_congested_pu.patch +++ b/debian/patches/features/all/rt/mm-backing-dev-don-t-disable-IRQs-in-wb_congested_pu.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 5 Feb 2016 12:17:14 +0100 Subject: mm: backing-dev: don't disable IRQs in wb_congested_put() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz it triggers: |BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:930 diff --git a/debian/patches/features/all/rt/mm-bounce-local-irq-save-nort.patch b/debian/patches/features/all/rt/mm-bounce-local-irq-save-nort.patch index 353618b13..20d322a13 100644 --- a/debian/patches/features/all/rt/mm-bounce-local-irq-save-nort.patch +++ b/debian/patches/features/all/rt/mm-bounce-local-irq-save-nort.patch @@ -1,7 +1,7 @@ Subject: mm: bounce: Use local_irq_save_nort From: Thomas Gleixner Date: Wed, 09 Jan 2013 10:33:09 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz kmap_atomic() is preemptible on RT. diff --git a/debian/patches/features/all/rt/mm-convert-swap-to-percpu-locked.patch b/debian/patches/features/all/rt/mm-convert-swap-to-percpu-locked.patch index 7de0d14f4..787ce2ad1 100644 --- a/debian/patches/features/all/rt/mm-convert-swap-to-percpu-locked.patch +++ b/debian/patches/features/all/rt/mm-convert-swap-to-percpu-locked.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:29:51 -0500 Subject: mm/swap: Convert to percpu locked -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Replace global locks (get_cpu + local_irq_save) with "local_locks()". Currently there is one of for "rotate" and one for "swap". diff --git a/debian/patches/features/all/rt/mm-disable-sloub-rt.patch b/debian/patches/features/all/rt/mm-disable-sloub-rt.patch index cbd2bb807..0f45b5571 100644 --- a/debian/patches/features/all/rt/mm-disable-sloub-rt.patch +++ b/debian/patches/features/all/rt/mm-disable-sloub-rt.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:44:03 -0500 Subject: mm: Allow only slub on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Disable SLAB and SLOB on -RT. Only SLUB is adopted to -RT needs. diff --git a/debian/patches/features/all/rt/mm-enable-slub.patch b/debian/patches/features/all/rt/mm-enable-slub.patch index ec354ce84..7f06664e4 100644 --- a/debian/patches/features/all/rt/mm-enable-slub.patch +++ b/debian/patches/features/all/rt/mm-enable-slub.patch @@ -1,7 +1,7 @@ Subject: mm: Enable SLUB for RT From: Thomas Gleixner Date: Thu, 25 Oct 2012 10:32:35 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Make SLUB RT aware by converting locks to raw and using free lists to move the freeing out of the lock held region. diff --git a/debian/patches/features/all/rt/mm-make-vmstat-rt-aware.patch b/debian/patches/features/all/rt/mm-make-vmstat-rt-aware.patch index 8673f2b1a..b675b64b4 100644 --- a/debian/patches/features/all/rt/mm-make-vmstat-rt-aware.patch +++ b/debian/patches/features/all/rt/mm-make-vmstat-rt-aware.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:30:13 -0500 Subject: mm/vmstat: Protect per cpu variables with preempt disable on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Disable preemption on -RT for the vmstat code. On vanila the code runs in IRQ-off regions while on -RT it is not. "preempt_disable" ensures that the diff --git a/debian/patches/features/all/rt/mm-memcontrol-Don-t-call-schedule_work_on-in-preempt.patch b/debian/patches/features/all/rt/mm-memcontrol-Don-t-call-schedule_work_on-in-preempt.patch index 91ee40f97..b4ab5a387 100644 --- a/debian/patches/features/all/rt/mm-memcontrol-Don-t-call-schedule_work_on-in-preempt.patch +++ b/debian/patches/features/all/rt/mm-memcontrol-Don-t-call-schedule_work_on-in-preempt.patch @@ -1,7 +1,7 @@ From: Yang Shi Subject: mm/memcontrol: Don't call schedule_work_on in preemption disabled context Date: Wed, 30 Oct 2013 11:48:33 -0700 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The following trace is triggered when running ltp oom test cases: diff --git a/debian/patches/features/all/rt/mm-memcontrol-do_not_disable_irq.patch b/debian/patches/features/all/rt/mm-memcontrol-do_not_disable_irq.patch index a64025673..daa52619c 100644 --- a/debian/patches/features/all/rt/mm-memcontrol-do_not_disable_irq.patch +++ b/debian/patches/features/all/rt/mm-memcontrol-do_not_disable_irq.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Subject: mm/memcontrol: Replace local_irq_disable with local locks Date: Wed, 28 Jan 2015 17:14:16 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz There are a few local_irq_disable() which then take sleeping locks. This patch converts them local locks. diff --git a/debian/patches/features/all/rt/mm-page-alloc-use-local-lock-on-target-cpu.patch b/debian/patches/features/all/rt/mm-page-alloc-use-local-lock-on-target-cpu.patch index 4b12a8f04..d49421dd7 100644 --- a/debian/patches/features/all/rt/mm-page-alloc-use-local-lock-on-target-cpu.patch +++ b/debian/patches/features/all/rt/mm-page-alloc-use-local-lock-on-target-cpu.patch @@ -1,7 +1,7 @@ Subject: mm: page_alloc: Use local_lock_on() instead of plain spinlock From: Thomas Gleixner Date: Thu, 27 Sep 2012 11:11:46 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The plain spinlock while sufficient does not update the local_lock internals. Use a proper local_lock function instead to ease debugging. diff --git a/debian/patches/features/all/rt/mm-page_alloc-reduce-lock-sections-further.patch b/debian/patches/features/all/rt/mm-page_alloc-reduce-lock-sections-further.patch index 2ba52957b..e53d9ae0c 100644 --- a/debian/patches/features/all/rt/mm-page_alloc-reduce-lock-sections-further.patch +++ b/debian/patches/features/all/rt/mm-page_alloc-reduce-lock-sections-further.patch @@ -1,7 +1,7 @@ From: Peter Zijlstra Date: Fri Jul 3 08:44:37 2009 -0500 Subject: mm: page_alloc: Reduce lock sections further -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Split out the pages which are to be freed into a separate list and call free_pages_bulk() outside of the percpu page allocator locks. diff --git a/debian/patches/features/all/rt/mm-page_alloc-rt-friendly-per-cpu-pages.patch b/debian/patches/features/all/rt/mm-page_alloc-rt-friendly-per-cpu-pages.patch index a8b9e8504..c723df1ed 100644 --- a/debian/patches/features/all/rt/mm-page_alloc-rt-friendly-per-cpu-pages.patch +++ b/debian/patches/features/all/rt/mm-page_alloc-rt-friendly-per-cpu-pages.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:29:37 -0500 Subject: mm: page_alloc: rt-friendly per-cpu pages -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz rt-friendly per-cpu pages: convert the irqs-off per-cpu locking method into a preemptible, explicit-per-cpu-locks method. diff --git a/debian/patches/features/all/rt/mm-perform-lru_add_drain_all-remotely.patch b/debian/patches/features/all/rt/mm-perform-lru_add_drain_all-remotely.patch index d675a224a..1b51ff99c 100644 --- a/debian/patches/features/all/rt/mm-perform-lru_add_drain_all-remotely.patch +++ b/debian/patches/features/all/rt/mm-perform-lru_add_drain_all-remotely.patch @@ -1,7 +1,7 @@ From: Luiz Capitulino Date: Fri, 27 May 2016 15:03:28 +0200 Subject: [PATCH] mm: perform lru_add_drain_all() remotely -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz lru_add_drain_all() works by scheduling lru_add_drain_cpu() to run on all CPUs that have non-empty LRU pagevecs and then waiting for diff --git a/debian/patches/features/all/rt/mm-protect-activate-switch-mm.patch b/debian/patches/features/all/rt/mm-protect-activate-switch-mm.patch index b6b00b561..8e619288e 100644 --- a/debian/patches/features/all/rt/mm-protect-activate-switch-mm.patch +++ b/debian/patches/features/all/rt/mm-protect-activate-switch-mm.patch @@ -1,7 +1,7 @@ From: Yong Zhang Date: Tue, 15 May 2012 13:53:56 +0800 Subject: mm: Protect activate_mm() by preempt_[disable&enable]_rt() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz User preempt_*_rt instead of local_irq_*_rt or otherwise there will be warning on ARM like below: diff --git a/debian/patches/features/all/rt/mm-rt-kmap-atomic-scheduling.patch b/debian/patches/features/all/rt/mm-rt-kmap-atomic-scheduling.patch index 17b99f5cd..d081f5e7d 100644 --- a/debian/patches/features/all/rt/mm-rt-kmap-atomic-scheduling.patch +++ b/debian/patches/features/all/rt/mm-rt-kmap-atomic-scheduling.patch @@ -1,7 +1,7 @@ Subject: mm, rt: kmap_atomic scheduling From: Peter Zijlstra Date: Thu, 28 Jul 2011 10:43:51 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz In fact, with migrate_disable() existing one could play games with kmap_atomic. You could save/restore the kmap_atomic slots on context diff --git a/debian/patches/features/all/rt/mm-scatterlist-dont-disable-irqs-on-RT.patch b/debian/patches/features/all/rt/mm-scatterlist-dont-disable-irqs-on-RT.patch index 28948df65..769110ef2 100644 --- a/debian/patches/features/all/rt/mm-scatterlist-dont-disable-irqs-on-RT.patch +++ b/debian/patches/features/all/rt/mm-scatterlist-dont-disable-irqs-on-RT.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Fri, 3 Jul 2009 08:44:34 -0500 Subject: mm/scatterlist: Do not disable irqs on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz For -RT it is enough to keep pagefault disabled (which is currently handled by kmap_atomic()). diff --git a/debian/patches/features/all/rt/mm-slub-close-possible-memory-leak-in-kmem_cache_all.patch b/debian/patches/features/all/rt/mm-slub-close-possible-memory-leak-in-kmem_cache_all.patch index cba2e7502..ccc424dfb 100644 --- a/debian/patches/features/all/rt/mm-slub-close-possible-memory-leak-in-kmem_cache_all.patch +++ b/debian/patches/features/all/rt/mm-slub-close-possible-memory-leak-in-kmem_cache_all.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 13 Dec 2017 12:44:14 +0100 Subject: [PATCH] mm/slub: close possible memory-leak in kmem_cache_alloc_bulk() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Under certain circumstances we could leak elements which were moved to the local "to_free" list. The damage is limited since I can't find diff --git a/debian/patches/features/all/rt/mm-vmalloc-use-get-cpu-light.patch b/debian/patches/features/all/rt/mm-vmalloc-use-get-cpu-light.patch index f097a0961..5b441d969 100644 --- a/debian/patches/features/all/rt/mm-vmalloc-use-get-cpu-light.patch +++ b/debian/patches/features/all/rt/mm-vmalloc-use-get-cpu-light.patch @@ -1,7 +1,7 @@ Subject: mm/vmalloc: Another preempt disable region which sucks From: Thomas Gleixner Date: Tue, 12 Jul 2011 11:39:36 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Avoid the preempt disable version of get_cpu_var(). The inner-lock should provide enough serialisation. diff --git a/debian/patches/features/all/rt/mm-workingset-do-not-protect-workingset_shadow_nodes.patch b/debian/patches/features/all/rt/mm-workingset-do-not-protect-workingset_shadow_nodes.patch index 1859c6938..cfd71ec00 100644 --- a/debian/patches/features/all/rt/mm-workingset-do-not-protect-workingset_shadow_nodes.patch +++ b/debian/patches/features/all/rt/mm-workingset-do-not-protect-workingset_shadow_nodes.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 29 Jan 2015 17:19:44 +0100 Subject: mm/workingset: Do not protect workingset_shadow_nodes with irq off -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz workingset_shadow_nodes is protected by local_irq_disable(). Some users use spin_lock_irq(). diff --git a/debian/patches/features/all/rt/mm_zsmalloc_copy_with_get_cpu_var_and_locking.patch b/debian/patches/features/all/rt/mm_zsmalloc_copy_with_get_cpu_var_and_locking.patch index e9d243db7..7c65e007b 100644 --- a/debian/patches/features/all/rt/mm_zsmalloc_copy_with_get_cpu_var_and_locking.patch +++ b/debian/patches/features/all/rt/mm_zsmalloc_copy_with_get_cpu_var_and_locking.patch @@ -1,7 +1,7 @@ From: Mike Galbraith Date: Tue, 22 Mar 2016 11:16:09 +0100 Subject: [PATCH] mm/zsmalloc: copy with get_cpu_var() and locking -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz get_cpu_var() disables preemption and triggers a might_sleep() splat later. This is replaced with get_locked_var(). diff --git a/debian/patches/features/all/rt/mmci-remove-bogus-irq-save.patch b/debian/patches/features/all/rt/mmci-remove-bogus-irq-save.patch index 99552ecda..0a5cf9ec6 100644 --- a/debian/patches/features/all/rt/mmci-remove-bogus-irq-save.patch +++ b/debian/patches/features/all/rt/mmci-remove-bogus-irq-save.patch @@ -1,7 +1,7 @@ Subject: mmci: Remove bogus local_irq_save() From: Thomas Gleixner Date: Wed, 09 Jan 2013 12:11:12 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz On !RT interrupt runs with interrupts disabled. On RT it's in a thread, so no need to disable interrupts at all. diff --git a/debian/patches/features/all/rt/move_sched_delayed_work_to_helper.patch b/debian/patches/features/all/rt/move_sched_delayed_work_to_helper.patch index c65469936..236bcefb0 100644 --- a/debian/patches/features/all/rt/move_sched_delayed_work_to_helper.patch +++ b/debian/patches/features/all/rt/move_sched_delayed_work_to_helper.patch @@ -1,7 +1,7 @@ Date: Wed, 26 Jun 2013 15:28:11 -0400 From: Steven Rostedt Subject: rt,ntp: Move call to schedule_delayed_work() to helper thread -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The ntp code for notify_cmos_timer() is called from a hard interrupt context. schedule_delayed_work() under PREEMPT_RT_FULL calls spinlocks diff --git a/debian/patches/features/all/rt/mutex-no-spin-on-rt.patch b/debian/patches/features/all/rt/mutex-no-spin-on-rt.patch index 4bb2a425c..ebf7697ab 100644 --- a/debian/patches/features/all/rt/mutex-no-spin-on-rt.patch +++ b/debian/patches/features/all/rt/mutex-no-spin-on-rt.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Sun, 17 Jul 2011 21:51:45 +0200 Subject: locking: Disable spin on owner for RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Drop spin on owner for mutex / rwsem. We are most likely not using it but… diff --git a/debian/patches/features/all/rt/net-Have-__napi_schedule_irqoff-disable-interrupts-o.patch b/debian/patches/features/all/rt/net-Have-__napi_schedule_irqoff-disable-interrupts-o.patch index b4081065f..dc0dbfd01 100644 --- a/debian/patches/features/all/rt/net-Have-__napi_schedule_irqoff-disable-interrupts-o.patch +++ b/debian/patches/features/all/rt/net-Have-__napi_schedule_irqoff-disable-interrupts-o.patch @@ -2,7 +2,7 @@ From: Steven Rostedt Date: Tue, 6 Dec 2016 17:50:30 -0500 Subject: [PATCH] net: Have __napi_schedule_irqoff() disable interrupts on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz A customer hit a crash where the napi sd->poll_list became corrupted. The customer had the bnx2x driver, which does a diff --git a/debian/patches/features/all/rt/net-Qdisc-use-a-seqlock-instead-seqcount.patch b/debian/patches/features/all/rt/net-Qdisc-use-a-seqlock-instead-seqcount.patch index 533263288..3f78b9b7a 100644 --- a/debian/patches/features/all/rt/net-Qdisc-use-a-seqlock-instead-seqcount.patch +++ b/debian/patches/features/all/rt/net-Qdisc-use-a-seqlock-instead-seqcount.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 14 Sep 2016 17:36:35 +0200 Subject: [PATCH] net/Qdisc: use a seqlock instead seqcount -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The seqcount disables preemption on -RT while it is held which can't remove. Also we don't want the reader to spin for ages if the writer is diff --git a/debian/patches/features/all/rt/net-add-a-lock-around-icmp_sk.patch b/debian/patches/features/all/rt/net-add-a-lock-around-icmp_sk.patch index 9f308ad6b..47e53a98b 100644 --- a/debian/patches/features/all/rt/net-add-a-lock-around-icmp_sk.patch +++ b/debian/patches/features/all/rt/net-add-a-lock-around-icmp_sk.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 31 Aug 2016 17:54:09 +0200 Subject: [PATCH] net: add a lock around icmp_sk() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz It looks like the this_cpu_ptr() access in icmp_sk() is protected with local_bh_disable(). To avoid missing serialization in -RT I am adding diff --git a/debian/patches/features/all/rt/net-add-back-the-missing-serialization-in-ip_send_un.patch b/debian/patches/features/all/rt/net-add-back-the-missing-serialization-in-ip_send_un.patch index eae087866..d721d8743 100644 --- a/debian/patches/features/all/rt/net-add-back-the-missing-serialization-in-ip_send_un.patch +++ b/debian/patches/features/all/rt/net-add-back-the-missing-serialization-in-ip_send_un.patch @@ -5,7 +5,7 @@ Subject: [PATCH] net: add back the missing serialization in MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Some time ago Sami Pietikäinen reported a crash on -RT in ip_send_unicast_reply() which was later fixed by Nicholas Mc Guire diff --git a/debian/patches/features/all/rt/net-another-local-irq-disable-alloc-atomic-headache.patch b/debian/patches/features/all/rt/net-another-local-irq-disable-alloc-atomic-headache.patch index 787093ada..4e696359a 100644 --- a/debian/patches/features/all/rt/net-another-local-irq-disable-alloc-atomic-headache.patch +++ b/debian/patches/features/all/rt/net-another-local-irq-disable-alloc-atomic-headache.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Wed, 26 Sep 2012 16:21:08 +0200 Subject: net: Another local_irq_disable/kmalloc headache -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Replace it by a local lock. Though that's pretty inefficient :( diff --git a/debian/patches/features/all/rt/net-core-cpuhotplug-drain-input_pkt_queue-lockless.patch b/debian/patches/features/all/rt/net-core-cpuhotplug-drain-input_pkt_queue-lockless.patch index f01336aa4..e2ca9173f 100644 --- a/debian/patches/features/all/rt/net-core-cpuhotplug-drain-input_pkt_queue-lockless.patch +++ b/debian/patches/features/all/rt/net-core-cpuhotplug-drain-input_pkt_queue-lockless.patch @@ -1,7 +1,7 @@ Subject: net/core/cpuhotplug: Drain input_pkt_queue lockless From: Grygorii Strashko Date: Fri, 9 Oct 2015 09:25:49 -0500 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz I can constantly see below error report with 4.1 RT-kernel on TI ARM dra7-evm if I'm trying to unplug cpu1: diff --git a/debian/patches/features/all/rt/net-core-protect-users-of-napi_alloc_cache-against-r.patch b/debian/patches/features/all/rt/net-core-protect-users-of-napi_alloc_cache-against-r.patch index 6b947717f..021ed944b 100644 --- a/debian/patches/features/all/rt/net-core-protect-users-of-napi_alloc_cache-against-r.patch +++ b/debian/patches/features/all/rt/net-core-protect-users-of-napi_alloc_cache-against-r.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 15 Jan 2016 16:33:34 +0100 Subject: net/core: protect users of napi_alloc_cache against reentrance -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz On -RT the code running in BH can not be moved to another CPU so CPU local variable remain local. However the code can be preempted diff --git a/debian/patches/features/all/rt/net-dev-always-take-qdisc-s-busylock-in-__dev_xmit_s.patch b/debian/patches/features/all/rt/net-dev-always-take-qdisc-s-busylock-in-__dev_xmit_s.patch index a82b5f9fe..d9c89329c 100644 --- a/debian/patches/features/all/rt/net-dev-always-take-qdisc-s-busylock-in-__dev_xmit_s.patch +++ b/debian/patches/features/all/rt/net-dev-always-take-qdisc-s-busylock-in-__dev_xmit_s.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 30 Mar 2016 13:36:29 +0200 Subject: [PATCH] net: dev: always take qdisc's busylock in __dev_xmit_skb() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The root-lock is dropped before dev_hard_start_xmit() is invoked and after setting the __QDISC___STATE_RUNNING bit. If this task is now pushed away diff --git a/debian/patches/features/all/rt/net-fix-iptable-xt-write-recseq-begin-rt-fallout.patch b/debian/patches/features/all/rt/net-fix-iptable-xt-write-recseq-begin-rt-fallout.patch index fcc3fbe2f..5b6eb0106 100644 --- a/debian/patches/features/all/rt/net-fix-iptable-xt-write-recseq-begin-rt-fallout.patch +++ b/debian/patches/features/all/rt/net-fix-iptable-xt-write-recseq-begin-rt-fallout.patch @@ -1,7 +1,7 @@ Subject: net: netfilter: Serialize xt_write_recseq sections on RT From: Thomas Gleixner Date: Sun, 28 Oct 2012 11:18:08 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The netfilter code relies only on the implicit semantics of local_bh_disable() for serializing wt_write_recseq sections. RT breaks diff --git a/debian/patches/features/all/rt/net-make-devnet_rename_seq-a-mutex.patch b/debian/patches/features/all/rt/net-make-devnet_rename_seq-a-mutex.patch index 1d76a96d8..694ef4468 100644 --- a/debian/patches/features/all/rt/net-make-devnet_rename_seq-a-mutex.patch +++ b/debian/patches/features/all/rt/net-make-devnet_rename_seq-a-mutex.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 20 Mar 2013 18:06:20 +0100 Subject: net: Add a mutex around devnet_rename_seq -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz On RT write_seqcount_begin() disables preemption and device_rename() allocates memory with GFP_KERNEL and grabs later the sysfs_mutex diff --git a/debian/patches/features/all/rt/net-move-xmit_recursion-to-per-task-variable-on-RT.patch b/debian/patches/features/all/rt/net-move-xmit_recursion-to-per-task-variable-on-RT.patch index 682d3af5e..139c2f8d9 100644 --- a/debian/patches/features/all/rt/net-move-xmit_recursion-to-per-task-variable-on-RT.patch +++ b/debian/patches/features/all/rt/net-move-xmit_recursion-to-per-task-variable-on-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 13 Jan 2016 15:55:02 +0100 Subject: net: move xmit_recursion to per-task variable on -RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz A softirq on -RT can be preempted. That means one task is in __dev_queue_xmit(), gets preempted and another task may enter diff --git a/debian/patches/features/all/rt/net-prevent-abba-deadlock.patch b/debian/patches/features/all/rt/net-prevent-abba-deadlock.patch index b4d240fdd..6fb649d30 100644 --- a/debian/patches/features/all/rt/net-prevent-abba-deadlock.patch +++ b/debian/patches/features/all/rt/net-prevent-abba-deadlock.patch @@ -1,7 +1,7 @@ Subject: net-flip-lock-dep-thingy.patch From: Thomas Gleixner Date: Tue, 28 Jun 2011 10:59:58 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz ======================================================= [ INFO: possible circular locking dependency detected ] diff --git a/debian/patches/features/all/rt/net-provide-a-way-to-delegate-processing-a-softirq-t.patch b/debian/patches/features/all/rt/net-provide-a-way-to-delegate-processing-a-softirq-t.patch index 48f70a40b..1e008a490 100644 --- a/debian/patches/features/all/rt/net-provide-a-way-to-delegate-processing-a-softirq-t.patch +++ b/debian/patches/features/all/rt/net-provide-a-way-to-delegate-processing-a-softirq-t.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 20 Jan 2016 15:39:05 +0100 Subject: net: provide a way to delegate processing a softirq to ksoftirqd -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz If the NET_RX uses up all of his budget it moves the following NAPI invocations into the `ksoftirqd`. On -RT it does not do so. Instead it diff --git a/debian/patches/features/all/rt/net-sched-dev_deactivate_many-use-msleep-1-instead-o.patch b/debian/patches/features/all/rt/net-sched-dev_deactivate_many-use-msleep-1-instead-o.patch index e7f372718..5bf4e0619 100644 --- a/debian/patches/features/all/rt/net-sched-dev_deactivate_many-use-msleep-1-instead-o.patch +++ b/debian/patches/features/all/rt/net-sched-dev_deactivate_many-use-msleep-1-instead-o.patch @@ -1,7 +1,7 @@ From: Marc Kleine-Budde Date: Wed, 5 Mar 2014 00:49:47 +0100 Subject: net: sched: Use msleep() instead of yield() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz On PREEMPT_RT enabled systems the interrupt handler run as threads at prio 50 (by default). If a high priority userspace process tries to shut down a busy diff --git a/debian/patches/features/all/rt/net-take-the-tcp_sk_lock-lock-with-BH-disabled.patch b/debian/patches/features/all/rt/net-take-the-tcp_sk_lock-lock-with-BH-disabled.patch index cbb0694b1..7464fe767 100644 --- a/debian/patches/features/all/rt/net-take-the-tcp_sk_lock-lock-with-BH-disabled.patch +++ b/debian/patches/features/all/rt/net-take-the-tcp_sk_lock-lock-with-BH-disabled.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Mon, 21 Aug 2017 15:09:13 +0200 Subject: [PATCH] net: take the tcp_sk_lock lock with BH disabled -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Lockdep may complain about an unsafe locking scenario: | CPU0 CPU1 diff --git a/debian/patches/features/all/rt/net-use-cpu-chill.patch b/debian/patches/features/all/rt/net-use-cpu-chill.patch index 16b547ebf..fc8f9ace5 100644 --- a/debian/patches/features/all/rt/net-use-cpu-chill.patch +++ b/debian/patches/features/all/rt/net-use-cpu-chill.patch @@ -1,7 +1,7 @@ Subject: net: Use cpu_chill() instead of cpu_relax() From: Thomas Gleixner Date: Wed, 07 Mar 2012 21:10:04 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Retry loops on RT might loop forever when the modifying side was preempted. Use cpu_chill() instead of cpu_relax() to let the system diff --git a/debian/patches/features/all/rt/net-use-trylock-in-icmp_sk.patch b/debian/patches/features/all/rt/net-use-trylock-in-icmp_sk.patch index 2c720ff50..18dd74938 100644 --- a/debian/patches/features/all/rt/net-use-trylock-in-icmp_sk.patch +++ b/debian/patches/features/all/rt/net-use-trylock-in-icmp_sk.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 21 Sep 2017 14:42:04 +0200 Subject: net: use trylock in icmp_sk -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The locking path can be recursive (same as for sk->sk_lock.slock) and therefore we need a trylock version for the locallock, too. diff --git a/debian/patches/features/all/rt/net-wireless-warn-nort.patch b/debian/patches/features/all/rt/net-wireless-warn-nort.patch index bf3e0771f..9842f81c1 100644 --- a/debian/patches/features/all/rt/net-wireless-warn-nort.patch +++ b/debian/patches/features/all/rt/net-wireless-warn-nort.patch @@ -1,7 +1,7 @@ Subject: net/wireless: Use WARN_ON_NORT() From: Thomas Gleixner Date: Thu, 21 Jul 2011 21:05:33 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The softirq counter is meaningless on RT, so the check triggers a false positive. diff --git a/debian/patches/features/all/rt/net_disable_NET_RX_BUSY_POLL.patch b/debian/patches/features/all/rt/net_disable_NET_RX_BUSY_POLL.patch index a29172db5..f706d05dc 100644 --- a/debian/patches/features/all/rt/net_disable_NET_RX_BUSY_POLL.patch +++ b/debian/patches/features/all/rt/net_disable_NET_RX_BUSY_POLL.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Sat, 27 May 2017 19:02:06 +0200 Subject: net/core: disable NET_RX_BUSY_POLL -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz sk_busy_loop() does preempt_disable() followed by a few operations which can take sleeping locks and may get long. diff --git a/debian/patches/features/all/rt/oleg-signal-rt-fix.patch b/debian/patches/features/all/rt/oleg-signal-rt-fix.patch index 1f455da59..7609656ac 100644 --- a/debian/patches/features/all/rt/oleg-signal-rt-fix.patch +++ b/debian/patches/features/all/rt/oleg-signal-rt-fix.patch @@ -1,7 +1,7 @@ From: Oleg Nesterov Date: Tue, 14 Jul 2015 14:26:34 +0200 Subject: signal/x86: Delay calling signals in atomic -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz On x86_64 we must disable preemption before we enable interrupts for stack faults, int3 and debugging, because the current task is using diff --git a/debian/patches/features/all/rt/panic-disable-random-on-rt.patch b/debian/patches/features/all/rt/panic-disable-random-on-rt.patch index 489990778..9a7ff449b 100644 --- a/debian/patches/features/all/rt/panic-disable-random-on-rt.patch +++ b/debian/patches/features/all/rt/panic-disable-random-on-rt.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Tue, 14 Jul 2015 14:26:34 +0200 Subject: panic: skip get_random_bytes for RT_FULL in init_oops_id -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Disable on -RT. If this is invoked from irq-context we will have problems to acquire the sleeping lock. diff --git a/debian/patches/features/all/rt/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch b/debian/patches/features/all/rt/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch index 5ebc4051c..8f7c323e3 100644 --- a/debian/patches/features/all/rt/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch +++ b/debian/patches/features/all/rt/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch @@ -1,7 +1,7 @@ Subject: rcu: Make ksoftirqd do RCU quiescent states From: "Paul E. McKenney" Date: Wed, 5 Oct 2011 11:45:18 -0700 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Implementing RCU-bh in terms of RCU-preempt makes the system vulnerable to network-based denial-of-service attacks. This patch therefore diff --git a/debian/patches/features/all/rt/pci-switchtec-Don-t-use-completion-s-wait-queue.patch b/debian/patches/features/all/rt/pci-switchtec-Don-t-use-completion-s-wait-queue.patch index 3776cbf10..be81a98d8 100644 --- a/debian/patches/features/all/rt/pci-switchtec-Don-t-use-completion-s-wait-queue.patch +++ b/debian/patches/features/all/rt/pci-switchtec-Don-t-use-completion-s-wait-queue.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 4 Oct 2017 10:24:23 +0200 Subject: [PATCH] pci/switchtec: Don't use completion's wait queue -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The poll callback is using completion's wait_queue_head_t member and puts it in poll_wait() so the poll() caller gets a wakeup after command diff --git a/debian/patches/features/all/rt/percpu_ida-use-locklocks.patch b/debian/patches/features/all/rt/percpu_ida-use-locklocks.patch index 1b0f6555f..c96429816 100644 --- a/debian/patches/features/all/rt/percpu_ida-use-locklocks.patch +++ b/debian/patches/features/all/rt/percpu_ida-use-locklocks.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 9 Apr 2014 11:58:17 +0200 Subject: percpu_ida: Use local locks -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz the local_irq_save() + spin_lock() does not work that well on -RT diff --git a/debian/patches/features/all/rt/peter_zijlstra-frob-rcu.patch b/debian/patches/features/all/rt/peter_zijlstra-frob-rcu.patch index 19daa2705..28a9b9428 100644 --- a/debian/patches/features/all/rt/peter_zijlstra-frob-rcu.patch +++ b/debian/patches/features/all/rt/peter_zijlstra-frob-rcu.patch @@ -1,7 +1,7 @@ Subject: rcu: Frob softirq test From: Peter Zijlstra Date: Sat Aug 13 00:23:17 CEST 2011 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz With RT_FULL we get the below wreckage: diff --git a/debian/patches/features/all/rt/peterz-percpu-rwsem-rt.patch b/debian/patches/features/all/rt/peterz-percpu-rwsem-rt.patch index 8283bc235..6044b8ce0 100644 --- a/debian/patches/features/all/rt/peterz-percpu-rwsem-rt.patch +++ b/debian/patches/features/all/rt/peterz-percpu-rwsem-rt.patch @@ -1,7 +1,7 @@ Subject: locking/percpu-rwsem: Remove preempt_disable variants From: Peter Zijlstra Date: Wed Nov 23 16:29:32 CET 2016 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Effective revert commit: diff --git a/debian/patches/features/all/rt/peterz-srcu-crypto-chain.patch b/debian/patches/features/all/rt/peterz-srcu-crypto-chain.patch index f3aedeae2..b336a6a2e 100644 --- a/debian/patches/features/all/rt/peterz-srcu-crypto-chain.patch +++ b/debian/patches/features/all/rt/peterz-srcu-crypto-chain.patch @@ -1,7 +1,7 @@ Subject: crypto: Convert crypto notifier chain to SRCU From: Peter Zijlstra Date: Fri, 05 Oct 2012 09:03:24 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The crypto notifier deadlocks on RT. Though this can be a real deadlock on mainline as well due to fifo fair rwsems. diff --git a/debian/patches/features/all/rt/pid.h-include-atomic.h.patch b/debian/patches/features/all/rt/pid.h-include-atomic.h.patch index 6b49a0790..cb2b1cfb1 100644 --- a/debian/patches/features/all/rt/pid.h-include-atomic.h.patch +++ b/debian/patches/features/all/rt/pid.h-include-atomic.h.patch @@ -1,7 +1,7 @@ From: Grygorii Strashko Date: Tue, 21 Jul 2015 19:43:56 +0300 Subject: pid.h: include atomic.h -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz This patch fixes build error: CC kernel/pid_namespace.o diff --git a/debian/patches/features/all/rt/ping-sysrq.patch b/debian/patches/features/all/rt/ping-sysrq.patch index 064446494..7e83fb5ea 100644 --- a/debian/patches/features/all/rt/ping-sysrq.patch +++ b/debian/patches/features/all/rt/ping-sysrq.patch @@ -1,7 +1,7 @@ Subject: net: sysrq via icmp From: Carsten Emde Date: Tue, 19 Jul 2011 13:51:17 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz There are (probably rare) situations when a system crashed and the system console becomes unresponsive but the network icmp layer still is alive. diff --git a/debian/patches/features/all/rt/posix-timers-no-broadcast.patch b/debian/patches/features/all/rt/posix-timers-no-broadcast.patch index 1e60de9d6..3f90d1dca 100644 --- a/debian/patches/features/all/rt/posix-timers-no-broadcast.patch +++ b/debian/patches/features/all/rt/posix-timers-no-broadcast.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Fri, 3 Jul 2009 08:29:20 -0500 Subject: posix-timers: Prevent broadcast signals -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Posix timers should not send broadcast signals and kernel only signals. Prevent it. @@ -20,15 +20,15 @@ Signed-off-by: Thomas Gleixner struct task_struct *rtn = current->group_leader; + int sig = event->sigev_signo; - if ((event->sigev_notify & SIGEV_THREAD_ID ) && - (!(rtn = find_task_by_vpid(event->sigev_notify_thread_id)) || -@@ -441,7 +442,8 @@ static struct pid *good_sigevent(sigeven - return NULL; - - if (((event->sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_NONE) && -- ((event->sigev_signo <= 0) || (event->sigev_signo > SIGRTMAX))) -+ (sig <= 0 || sig > SIGRTMAX || sig_kernel_only(sig) || -+ sig_kernel_coredump(sig))) - return NULL; - - return task_pid(rtn); + switch (event->sigev_notify) { + case SIGEV_SIGNAL | SIGEV_THREAD_ID: +@@ -442,7 +443,8 @@ static struct pid *good_sigevent(sigeven + /* FALLTHRU */ + case SIGEV_SIGNAL: + case SIGEV_THREAD: +- if (event->sigev_signo <= 0 || event->sigev_signo > SIGRTMAX) ++ if (sig <= 0 || sig > SIGRTMAX || ++ sig_kernel_only(sig) || sig_kernel_coredump(sig)) + return NULL; + /* FALLTHRU */ + case SIGEV_NONE: diff --git a/debian/patches/features/all/rt/posix-timers-thread-posix-cpu-timers-on-rt.patch b/debian/patches/features/all/rt/posix-timers-thread-posix-cpu-timers-on-rt.patch index 3aeee89b6..85fca3029 100644 --- a/debian/patches/features/all/rt/posix-timers-thread-posix-cpu-timers-on-rt.patch +++ b/debian/patches/features/all/rt/posix-timers-thread-posix-cpu-timers-on-rt.patch @@ -1,7 +1,7 @@ From: John Stultz Date: Fri, 3 Jul 2009 08:29:58 -0500 Subject: posix-timers: Thread posix-cpu-timers on -rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz posix-cpu-timer code takes non -rt safe locks in hard irq context. Move it to a thread. diff --git a/debian/patches/features/all/rt/power-disable-highmem-on-rt.patch b/debian/patches/features/all/rt/power-disable-highmem-on-rt.patch index 46b402315..954d29f7a 100644 --- a/debian/patches/features/all/rt/power-disable-highmem-on-rt.patch +++ b/debian/patches/features/all/rt/power-disable-highmem-on-rt.patch @@ -1,7 +1,7 @@ Subject: powerpc: Disable highmem on RT From: Thomas Gleixner Date: Mon, 18 Jul 2011 17:08:34 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The current highmem handling on -RT is not compatible and needs fixups. diff --git a/debian/patches/features/all/rt/power-use-generic-rwsem-on-rt.patch b/debian/patches/features/all/rt/power-use-generic-rwsem-on-rt.patch index 605faf4de..f9eb7755f 100644 --- a/debian/patches/features/all/rt/power-use-generic-rwsem-on-rt.patch +++ b/debian/patches/features/all/rt/power-use-generic-rwsem-on-rt.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Tue, 14 Jul 2015 14:26:34 +0200 Subject: powerpc: Use generic rwsem on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Use generic code which uses rtmutex diff --git a/debian/patches/features/all/rt/powerpc-kvm-Disable-in-kernel-MPIC-emulation-for-PRE.patch b/debian/patches/features/all/rt/powerpc-kvm-Disable-in-kernel-MPIC-emulation-for-PRE.patch index 37244bd38..0feea72eb 100644 --- a/debian/patches/features/all/rt/powerpc-kvm-Disable-in-kernel-MPIC-emulation-for-PRE.patch +++ b/debian/patches/features/all/rt/powerpc-kvm-Disable-in-kernel-MPIC-emulation-for-PRE.patch @@ -1,7 +1,7 @@ From: Bogdan Purcareata Date: Fri, 24 Apr 2015 15:53:13 +0000 Subject: powerpc/kvm: Disable in-kernel MPIC emulation for PREEMPT_RT_FULL -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz While converting the openpic emulation code to use a raw_spinlock_t enables guests to run on RT, there's still a performance issue. For interrupts sent in diff --git a/debian/patches/features/all/rt/powerpc-preempt-lazy-support.patch b/debian/patches/features/all/rt/powerpc-preempt-lazy-support.patch index fe0c9c0c0..d6fefa477 100644 --- a/debian/patches/features/all/rt/powerpc-preempt-lazy-support.patch +++ b/debian/patches/features/all/rt/powerpc-preempt-lazy-support.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 1 Nov 2012 10:14:11 +0100 Subject: powerpc: Add support for lazy preemption -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Implement the powerpc pieces for lazy preempt. diff --git a/debian/patches/features/all/rt/powerpc-ps3-device-init.c-adapt-to-completions-using.patch b/debian/patches/features/all/rt/powerpc-ps3-device-init.c-adapt-to-completions-using.patch index a7bcb653b..221636542 100644 --- a/debian/patches/features/all/rt/powerpc-ps3-device-init.c-adapt-to-completions-using.patch +++ b/debian/patches/features/all/rt/powerpc-ps3-device-init.c-adapt-to-completions-using.patch @@ -1,7 +1,7 @@ From: Paul Gortmaker Date: Sun, 31 May 2015 14:44:42 -0400 Subject: powerpc: ps3/device-init.c - adapt to completions using swait vs wait -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz To fix: diff --git a/debian/patches/features/all/rt/preempt-lazy-support.patch b/debian/patches/features/all/rt/preempt-lazy-support.patch index 856cf97ff..6464a2bb2 100644 --- a/debian/patches/features/all/rt/preempt-lazy-support.patch +++ b/debian/patches/features/all/rt/preempt-lazy-support.patch @@ -1,7 +1,7 @@ Subject: sched: Add support for lazy preemption From: Thomas Gleixner Date: Fri, 26 Oct 2012 18:50:54 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz It has become an obsession to mitigate the determinism vs. throughput loss of RT. Looking at the mainline semantics of preemption points diff --git a/debian/patches/features/all/rt/preempt-nort-rt-variants.patch b/debian/patches/features/all/rt/preempt-nort-rt-variants.patch index 88a6b4371..9b0fd0a2f 100644 --- a/debian/patches/features/all/rt/preempt-nort-rt-variants.patch +++ b/debian/patches/features/all/rt/preempt-nort-rt-variants.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Fri, 24 Jul 2009 12:38:56 +0200 Subject: preempt: Provide preempt_*_(no)rt variants -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz RT needs a few preempt_disable/enable points which are not necessary otherwise. Implement variants to avoid #ifdeffery. diff --git a/debian/patches/features/all/rt/printk-27force_early_printk-27-boot-param-to-help-with-debugging.patch b/debian/patches/features/all/rt/printk-27force_early_printk-27-boot-param-to-help-with-debugging.patch index d2cf96939..c00a04f65 100644 --- a/debian/patches/features/all/rt/printk-27force_early_printk-27-boot-param-to-help-with-debugging.patch +++ b/debian/patches/features/all/rt/printk-27force_early_printk-27-boot-param-to-help-with-debugging.patch @@ -1,7 +1,7 @@ Subject: printk: Add "force_early_printk" boot param to help with debugging From: Peter Zijlstra Date: Fri, 02 Sep 2011 14:41:29 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Gives me an option to screw printk and actually see what the machine says. diff --git a/debian/patches/features/all/rt/printk-kill.patch b/debian/patches/features/all/rt/printk-kill.patch index 61957589c..5cf2eaef9 100644 --- a/debian/patches/features/all/rt/printk-kill.patch +++ b/debian/patches/features/all/rt/printk-kill.patch @@ -1,7 +1,7 @@ Subject: printk: Add a printk kill switch From: Ingo Molnar Date: Fri, 22 Jul 2011 17:58:40 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Add a prinkt-kill-switch. This is used from (NMI) watchdog to ensure that it does not dead-lock with the early printk code. diff --git a/debian/patches/features/all/rt/printk-rt-aware.patch b/debian/patches/features/all/rt/printk-rt-aware.patch index 87cdb33ae..220a251d5 100644 --- a/debian/patches/features/all/rt/printk-rt-aware.patch +++ b/debian/patches/features/all/rt/printk-rt-aware.patch @@ -1,7 +1,7 @@ Subject: printk: Make rt aware From: Thomas Gleixner Date: Wed, 19 Sep 2012 14:50:37 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Drop the lock before calling the console driver and do not disable interrupts while printing to a serial console. diff --git a/debian/patches/features/all/rt/ptrace-fix-ptrace-vs-tasklist_lock-race.patch b/debian/patches/features/all/rt/ptrace-fix-ptrace-vs-tasklist_lock-race.patch index 8668df601..a2a7e333c 100644 --- a/debian/patches/features/all/rt/ptrace-fix-ptrace-vs-tasklist_lock-race.patch +++ b/debian/patches/features/all/rt/ptrace-fix-ptrace-vs-tasklist_lock-race.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 29 Aug 2013 18:21:04 +0200 Subject: ptrace: fix ptrace vs tasklist_lock race -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz As explained by Alexander Fyodorov : diff --git a/debian/patches/features/all/rt/radix-tree-use-local-locks.patch b/debian/patches/features/all/rt/radix-tree-use-local-locks.patch index dac78afd3..cf97684b2 100644 --- a/debian/patches/features/all/rt/radix-tree-use-local-locks.patch +++ b/debian/patches/features/all/rt/radix-tree-use-local-locks.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 25 Jan 2017 16:34:27 +0100 Subject: [PATCH] radix-tree: use local locks -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The preload functionality uses per-CPU variables and preempt-disable to ensure that it does not switch CPUs during its usage. This patch adds diff --git a/debian/patches/features/all/rt/random-avoid-preempt_disable-ed-section.patch b/debian/patches/features/all/rt/random-avoid-preempt_disable-ed-section.patch index e96ce27ec..856bef994 100644 --- a/debian/patches/features/all/rt/random-avoid-preempt_disable-ed-section.patch +++ b/debian/patches/features/all/rt/random-avoid-preempt_disable-ed-section.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 12 May 2017 15:46:17 +0200 Subject: [PATCH] random: avoid preempt_disable()ed section -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz extract_crng() will use sleeping locks while in a preempt_disable() section due to get_cpu_var(). diff --git a/debian/patches/features/all/rt/random-make-it-work-on-rt.patch b/debian/patches/features/all/rt/random-make-it-work-on-rt.patch index 370b08004..5ced91eba 100644 --- a/debian/patches/features/all/rt/random-make-it-work-on-rt.patch +++ b/debian/patches/features/all/rt/random-make-it-work-on-rt.patch @@ -1,7 +1,7 @@ Subject: random: Make it work on rt From: Thomas Gleixner Date: Tue, 21 Aug 2012 20:38:50 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Delegate the random insertion to the forced threaded interrupt handler. Store the return IP of the hard interrupt handler in the irq diff --git a/debian/patches/features/all/rt/rbtree-include-rcu.h-because-we-use-it.patch b/debian/patches/features/all/rt/rbtree-include-rcu.h-because-we-use-it.patch index 6addd2a39..fbc8fde1b 100644 --- a/debian/patches/features/all/rt/rbtree-include-rcu.h-because-we-use-it.patch +++ b/debian/patches/features/all/rt/rbtree-include-rcu.h-because-we-use-it.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 14 Sep 2016 11:52:17 +0200 Subject: rbtree: include rcu.h because we use it -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Since commit c1adf20052d8 ("Introduce rb_replace_node_rcu()") rbtree_augmented.h uses RCU related data structures but does not include diff --git a/debian/patches/features/all/rt/rcu-Eliminate-softirq-processing-from-rcutree.patch b/debian/patches/features/all/rt/rcu-Eliminate-softirq-processing-from-rcutree.patch index ad984b703..27fd2f159 100644 --- a/debian/patches/features/all/rt/rcu-Eliminate-softirq-processing-from-rcutree.patch +++ b/debian/patches/features/all/rt/rcu-Eliminate-softirq-processing-from-rcutree.patch @@ -1,7 +1,7 @@ From: "Paul E. McKenney" Date: Mon, 4 Nov 2013 13:21:10 -0800 Subject: rcu: Eliminate softirq processing from rcutree -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Running RCU out of softirq is a problem for some workloads that would like to manage RCU core processing independently of other softirq work, diff --git a/debian/patches/features/all/rt/rcu-Suppress-lockdep-false-positive-boost_mtx-compla.patch b/debian/patches/features/all/rt/rcu-Suppress-lockdep-false-positive-boost_mtx-compla.patch index 6997b0a0c..a154b94ef 100644 --- a/debian/patches/features/all/rt/rcu-Suppress-lockdep-false-positive-boost_mtx-compla.patch +++ b/debian/patches/features/all/rt/rcu-Suppress-lockdep-false-positive-boost_mtx-compla.patch @@ -1,7 +1,7 @@ From: "Paul E. McKenney" Date: Tue, 19 Sep 2017 15:36:42 -0700 Subject: [PATCH] rcu: Suppress lockdep false-positive ->boost_mtx complaints -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Upstream commit bcda31a2659497df39d6bedfbdf17498b4f4ac89 diff --git a/debian/patches/features/all/rt/rcu-disable-rcu-fast-no-hz-on-rt.patch b/debian/patches/features/all/rt/rcu-disable-rcu-fast-no-hz-on-rt.patch index b999cf35a..f5e066a5d 100644 --- a/debian/patches/features/all/rt/rcu-disable-rcu-fast-no-hz-on-rt.patch +++ b/debian/patches/features/all/rt/rcu-disable-rcu-fast-no-hz-on-rt.patch @@ -1,7 +1,7 @@ Subject: rcu: Disable RCU_FAST_NO_HZ on RT From: Thomas Gleixner Date: Sun, 28 Oct 2012 13:26:09 +0000 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz This uses a timer_list timer from the irq disabled guts of the idle code. Disable it for now to prevent wreckage. diff --git a/debian/patches/features/all/rt/rcu-enable-rcu_normal_after_boot-by-default-for-RT.patch b/debian/patches/features/all/rt/rcu-enable-rcu_normal_after_boot-by-default-for-RT.patch index e8910549e..84e2ba9df 100644 --- a/debian/patches/features/all/rt/rcu-enable-rcu_normal_after_boot-by-default-for-RT.patch +++ b/debian/patches/features/all/rt/rcu-enable-rcu_normal_after_boot-by-default-for-RT.patch @@ -1,7 +1,7 @@ From: Julia Cartwright Date: Wed, 12 Oct 2016 11:21:14 -0500 Subject: [PATCH] rcu: enable rcu_normal_after_boot by default for RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The forcing of an expedited grace period is an expensive and very RT-application unfriendly operation, as it forcibly preempts all running diff --git a/debian/patches/features/all/rt/rcu-make-RCU_BOOST-default-on-RT.patch b/debian/patches/features/all/rt/rcu-make-RCU_BOOST-default-on-RT.patch index 1e9556920..87da4f99b 100644 --- a/debian/patches/features/all/rt/rcu-make-RCU_BOOST-default-on-RT.patch +++ b/debian/patches/features/all/rt/rcu-make-RCU_BOOST-default-on-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 21 Mar 2014 20:19:05 +0100 Subject: rcu: make RCU_BOOST default on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Since it is no longer invoked from the softirq people run into OOM more often if the priority of the RCU thread is too low. Making boosting diff --git a/debian/patches/features/all/rt/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch b/debian/patches/features/all/rt/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch index d3e2f4178..d6818b621 100644 --- a/debian/patches/features/all/rt/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch +++ b/debian/patches/features/all/rt/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch @@ -1,7 +1,7 @@ Subject: rcu: Merge RCU-bh into RCU-preempt Date: Wed, 5 Oct 2011 11:59:38 -0700 From: Thomas Gleixner -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The Linux kernel has long RCU-bh read-side critical sections that intolerably increase scheduling latency under mainline's RCU-bh rules, diff --git a/debian/patches/features/all/rt/rcu-segcblist-include-rcupdate.h.patch b/debian/patches/features/all/rt/rcu-segcblist-include-rcupdate.h.patch index c1758e0a0..b5bd7fafb 100644 --- a/debian/patches/features/all/rt/rcu-segcblist-include-rcupdate.h.patch +++ b/debian/patches/features/all/rt/rcu-segcblist-include-rcupdate.h.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 22 Sep 2017 15:01:46 +0200 Subject: [PATCH] rcu/segcblist: include rcupdate.h -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The RT build on ARM complains about non-existing ULONG_CMP_LT. Since rcu_segcblist.c uses that macro it should include the header file. diff --git a/debian/patches/features/all/rt/rcutree-rcu_bh_qs-disable-irq-while-calling-rcu_pree.patch b/debian/patches/features/all/rt/rcutree-rcu_bh_qs-disable-irq-while-calling-rcu_pree.patch index 31162faca..483954637 100644 --- a/debian/patches/features/all/rt/rcutree-rcu_bh_qs-disable-irq-while-calling-rcu_pree.patch +++ b/debian/patches/features/all/rt/rcutree-rcu_bh_qs-disable-irq-while-calling-rcu_pree.patch @@ -1,7 +1,7 @@ From: Tiejun Chen Date: Wed, 18 Dec 2013 17:51:49 +0800 Subject: rcutree/rcu_bh_qs: Disable irq while calling rcu_preempt_qs() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Any callers to the function rcu_preempt_qs() must disable irqs in order to protect the assignment to ->rcu_read_unlock_special. In diff --git a/debian/patches/features/all/rt/re-preempt_rt_full-arm-coredump-fails-for-cpu-3e-3d-4.patch b/debian/patches/features/all/rt/re-preempt_rt_full-arm-coredump-fails-for-cpu-3e-3d-4.patch index a3fa1e917..c9973b15d 100644 --- a/debian/patches/features/all/rt/re-preempt_rt_full-arm-coredump-fails-for-cpu-3e-3d-4.patch +++ b/debian/patches/features/all/rt/re-preempt_rt_full-arm-coredump-fails-for-cpu-3e-3d-4.patch @@ -1,7 +1,7 @@ Subject: ARM: Initialize split page table locks for vector page From: Frank Rowand Date: Sat, 1 Oct 2011 18:58:13 -0700 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Without this patch, ARM can not use SPLIT_PTLOCK_CPUS if PREEMPT_RT_FULL=y because vectors_user_mapping() creates a diff --git a/debian/patches/features/all/rt/rfc-arm-smp-__cpu_disable-fix-sleeping-function-called-from-invalid-context.patch b/debian/patches/features/all/rt/rfc-arm-smp-__cpu_disable-fix-sleeping-function-called-from-invalid-context.patch index fa2a5d47b..32b2fd101 100644 --- a/debian/patches/features/all/rt/rfc-arm-smp-__cpu_disable-fix-sleeping-function-called-from-invalid-context.patch +++ b/debian/patches/features/all/rt/rfc-arm-smp-__cpu_disable-fix-sleeping-function-called-from-invalid-context.patch @@ -1,7 +1,7 @@ Subject: ARM: smp: Move clear_tasks_mm_cpumask() call to __cpu_die() From: Grygorii Strashko Date: Fri, 11 Sep 2015 21:21:23 +0300 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz When running with the RT-kernel (4.1.5-rt5) on TI OMAP dra7-evm and trying to do Suspend to RAM, the following backtrace occurs: diff --git a/debian/patches/features/all/rt/rt-Increase-decrease-the-nr-of-migratory-tasks-when-.patch b/debian/patches/features/all/rt/rt-Increase-decrease-the-nr-of-migratory-tasks-when-.patch index 2d726cad7..2fbd27453 100644 --- a/debian/patches/features/all/rt/rt-Increase-decrease-the-nr-of-migratory-tasks-when-.patch +++ b/debian/patches/features/all/rt/rt-Increase-decrease-the-nr-of-migratory-tasks-when-.patch @@ -1,7 +1,7 @@ From: Daniel Bristot de Oliveira Date: Mon, 26 Jun 2017 17:07:15 +0200 Subject: rt: Increase/decrease the nr of migratory tasks when enabling/disabling migration -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz There is a problem in the migrate_disable()/enable() implementation regarding the number of migratory tasks in the rt/dl RQs. The problem diff --git a/debian/patches/features/all/rt/rt-introduce-cpu-chill.patch b/debian/patches/features/all/rt/rt-introduce-cpu-chill.patch index ad0a95184..472210859 100644 --- a/debian/patches/features/all/rt/rt-introduce-cpu-chill.patch +++ b/debian/patches/features/all/rt/rt-introduce-cpu-chill.patch @@ -1,7 +1,7 @@ Subject: rt: Introduce cpu_chill() From: Thomas Gleixner Date: Wed, 07 Mar 2012 20:51:03 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Retry loops on RT might loop forever when the modifying side was preempted. Add cpu_chill() to replace cpu_relax(). cpu_chill() diff --git a/debian/patches/features/all/rt/rt-local-irq-lock.patch b/debian/patches/features/all/rt/rt-local-irq-lock.patch index bd229d8aa..af0bf9140 100644 --- a/debian/patches/features/all/rt/rt-local-irq-lock.patch +++ b/debian/patches/features/all/rt/rt-local-irq-lock.patch @@ -1,7 +1,7 @@ Subject: rt: Add local irq locks From: Thomas Gleixner Date: Mon, 20 Jun 2011 09:03:47 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Introduce locallock. For !RT this maps to preempt_disable()/ local_irq_disable() so there is not much that changes. For RT this will diff --git a/debian/patches/features/all/rt/rt-preempt-base-config.patch b/debian/patches/features/all/rt/rt-preempt-base-config.patch index 8a7f4925b..4f17e52a6 100644 --- a/debian/patches/features/all/rt/rt-preempt-base-config.patch +++ b/debian/patches/features/all/rt/rt-preempt-base-config.patch @@ -1,7 +1,7 @@ Subject: rt: Provide PREEMPT_RT_BASE config switch From: Thomas Gleixner Date: Fri, 17 Jun 2011 12:39:57 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Introduce PREEMPT_RT_BASE which enables parts of PREEMPT_RT_FULL. Forces interrupt threading and enables some of the RT diff --git a/debian/patches/features/all/rt/rt-serial-warn-fix.patch b/debian/patches/features/all/rt/rt-serial-warn-fix.patch index 09f58526f..c27e2bd4e 100644 --- a/debian/patches/features/all/rt/rt-serial-warn-fix.patch +++ b/debian/patches/features/all/rt/rt-serial-warn-fix.patch @@ -1,7 +1,7 @@ Subject: rt: Improve the serial console PASS_LIMIT From: Ingo Molnar Date: Wed Dec 14 13:05:54 CET 2011 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Beyond the warning: diff --git a/debian/patches/features/all/rt/rtmutex--Handle-non-enqueued-waiters-gracefully.patch b/debian/patches/features/all/rt/rtmutex--Handle-non-enqueued-waiters-gracefully.patch index 4b9717d47..413218e43 100644 --- a/debian/patches/features/all/rt/rtmutex--Handle-non-enqueued-waiters-gracefully.patch +++ b/debian/patches/features/all/rt/rtmutex--Handle-non-enqueued-waiters-gracefully.patch @@ -1,7 +1,7 @@ Subject: rtmutex: Handle non enqueued waiters gracefully From: Thomas Gleixner Date: Fri, 06 Nov 2015 18:51:03 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Yimin debugged that in case of a PI wakeup in progress when rt_mutex_start_proxy_lock() calls task_blocks_on_rt_mutex() the latter diff --git a/debian/patches/features/all/rt/rtmutex-Make-lock_killable-work.patch b/debian/patches/features/all/rt/rtmutex-Make-lock_killable-work.patch index 1dc8f6791..f4913ce27 100644 --- a/debian/patches/features/all/rt/rtmutex-Make-lock_killable-work.patch +++ b/debian/patches/features/all/rt/rtmutex-Make-lock_killable-work.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Sat, 1 Apr 2017 12:50:59 +0200 Subject: [PATCH] rtmutex: Make lock_killable work -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Locking an rt mutex killable does not work because signal handling is restricted to TASK_INTERRUPTIBLE. diff --git a/debian/patches/features/all/rt/rtmutex-Provide-rt_mutex_slowlock_locked.patch b/debian/patches/features/all/rt/rtmutex-Provide-rt_mutex_slowlock_locked.patch index df42521df..2b487033e 100644 --- a/debian/patches/features/all/rt/rtmutex-Provide-rt_mutex_slowlock_locked.patch +++ b/debian/patches/features/all/rt/rtmutex-Provide-rt_mutex_slowlock_locked.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 12 Oct 2017 16:14:22 +0200 Subject: rtmutex: Provide rt_mutex_slowlock_locked() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz This is the inner-part of rt_mutex_slowlock(), required for rwsem-rt. diff --git a/debian/patches/features/all/rt/rtmutex-add-mutex-implementation-based-on-rtmutex.patch b/debian/patches/features/all/rt/rtmutex-add-mutex-implementation-based-on-rtmutex.patch index d3199cab3..a0aa5b3b7 100644 --- a/debian/patches/features/all/rt/rtmutex-add-mutex-implementation-based-on-rtmutex.patch +++ b/debian/patches/features/all/rt/rtmutex-add-mutex-implementation-based-on-rtmutex.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 12 Oct 2017 17:17:03 +0200 Subject: rtmutex: add mutex implementation based on rtmutex -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior diff --git a/debian/patches/features/all/rt/rtmutex-add-rwlock-implementation-based-on-rtmutex.patch b/debian/patches/features/all/rt/rtmutex-add-rwlock-implementation-based-on-rtmutex.patch index 2ff03a643..a2dc5ae03 100644 --- a/debian/patches/features/all/rt/rtmutex-add-rwlock-implementation-based-on-rtmutex.patch +++ b/debian/patches/features/all/rt/rtmutex-add-rwlock-implementation-based-on-rtmutex.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 12 Oct 2017 17:18:06 +0200 Subject: rtmutex: add rwlock implementation based on rtmutex -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The implementation is bias-based, similar to the rwsem implementation. diff --git a/debian/patches/features/all/rt/rtmutex-add-rwsem-implementation-based-on-rtmutex.patch b/debian/patches/features/all/rt/rtmutex-add-rwsem-implementation-based-on-rtmutex.patch index 1f3cd49dd..4bdc31e24 100644 --- a/debian/patches/features/all/rt/rtmutex-add-rwsem-implementation-based-on-rtmutex.patch +++ b/debian/patches/features/all/rt/rtmutex-add-rwsem-implementation-based-on-rtmutex.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 12 Oct 2017 17:28:34 +0200 Subject: rtmutex: add rwsem implementation based on rtmutex -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The RT specific R/W semaphore implementation restricts the number of readers to one because a writer cannot block on multiple readers and inherit its diff --git a/debian/patches/features/all/rt/rtmutex-add-sleeping-lock-implementation.patch b/debian/patches/features/all/rt/rtmutex-add-sleeping-lock-implementation.patch index b1fb15012..a0b342ee5 100644 --- a/debian/patches/features/all/rt/rtmutex-add-sleeping-lock-implementation.patch +++ b/debian/patches/features/all/rt/rtmutex-add-sleeping-lock-implementation.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 12 Oct 2017 17:11:19 +0200 Subject: rtmutex: add sleeping lock implementation -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior diff --git a/debian/patches/features/all/rt/rtmutex-add-ww_mutex-addon-for-mutex-rt.patch b/debian/patches/features/all/rt/rtmutex-add-ww_mutex-addon-for-mutex-rt.patch index 926b004d6..25dfdb65a 100644 --- a/debian/patches/features/all/rt/rtmutex-add-ww_mutex-addon-for-mutex-rt.patch +++ b/debian/patches/features/all/rt/rtmutex-add-ww_mutex-addon-for-mutex-rt.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 12 Oct 2017 17:34:38 +0200 Subject: rtmutex: add ww_mutex addon for mutex-rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Signed-off-by: Sebastian Andrzej Siewior --- diff --git a/debian/patches/features/all/rt/rtmutex-avoid-include-hell.patch b/debian/patches/features/all/rt/rtmutex-avoid-include-hell.patch index 3687ab4b9..91f0dbe28 100644 --- a/debian/patches/features/all/rt/rtmutex-avoid-include-hell.patch +++ b/debian/patches/features/all/rt/rtmutex-avoid-include-hell.patch @@ -1,7 +1,7 @@ Subject: rtmutex: Avoid include hell From: Thomas Gleixner Date: Wed, 29 Jun 2011 20:06:39 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Include only the required raw types. This avoids pulling in the complete spinlock header which in turn requires rtmutex.h at some point. diff --git a/debian/patches/features/all/rt/rtmutex-export-lockdep-less-version-of-rt_mutex-s-lo.patch b/debian/patches/features/all/rt/rtmutex-export-lockdep-less-version-of-rt_mutex-s-lo.patch index 9bae7397c..324a5dd80 100644 --- a/debian/patches/features/all/rt/rtmutex-export-lockdep-less-version-of-rt_mutex-s-lo.patch +++ b/debian/patches/features/all/rt/rtmutex-export-lockdep-less-version-of-rt_mutex-s-lo.patch @@ -2,7 +2,7 @@ From: Thomas Gleixner Date: Thu, 12 Oct 2017 16:36:39 +0200 Subject: rtmutex: export lockdep-less version of rt_mutex's lock, trylock and unlock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Required for lock implementation ontop of rtmutex. diff --git a/debian/patches/features/all/rt/rtmutex-futex-prepare-rt.patch b/debian/patches/features/all/rt/rtmutex-futex-prepare-rt.patch index d274e2754..3249de1c8 100644 --- a/debian/patches/features/all/rt/rtmutex-futex-prepare-rt.patch +++ b/debian/patches/features/all/rt/rtmutex-futex-prepare-rt.patch @@ -1,7 +1,7 @@ Subject: rtmutex: Handle the various new futex race conditions From: Thomas Gleixner Date: Fri, 10 Jun 2011 11:04:15 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz RT opens a few new interesting race conditions in the rtmutex/futex combo due to futex hash bucket lock being a 'sleeping' spinlock and diff --git a/debian/patches/features/all/rt/rtmutex-lock-killable.patch b/debian/patches/features/all/rt/rtmutex-lock-killable.patch index cfad544ab..ee81680ef 100644 --- a/debian/patches/features/all/rt/rtmutex-lock-killable.patch +++ b/debian/patches/features/all/rt/rtmutex-lock-killable.patch @@ -1,7 +1,7 @@ Subject: rtmutex: Add rtmutex_lock_killable() From: Thomas Gleixner Date: Thu, 09 Jun 2011 11:43:52 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Add "killable" type to rtmutex. We need this since rtmutex are used as "normal" mutexes which do use this type. diff --git a/debian/patches/features/all/rt/rtmutex-trylock-is-okay-on-RT.patch b/debian/patches/features/all/rt/rtmutex-trylock-is-okay-on-RT.patch index f4f342f13..97c9acb1a 100644 --- a/debian/patches/features/all/rt/rtmutex-trylock-is-okay-on-RT.patch +++ b/debian/patches/features/all/rt/rtmutex-trylock-is-okay-on-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed 02 Dec 2015 11:34:07 +0100 Subject: rtmutex: trylock is okay on -RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz non-RT kernel could deadlock on rt_mutex_trylock() in softirq context. On -RT we don't run softirqs in IRQ context but in thread context so it is diff --git a/debian/patches/features/all/rt/rtmutex-wire-up-RT-s-locking.patch b/debian/patches/features/all/rt/rtmutex-wire-up-RT-s-locking.patch index 0ed690772..e5fd1e51d 100644 --- a/debian/patches/features/all/rt/rtmutex-wire-up-RT-s-locking.patch +++ b/debian/patches/features/all/rt/rtmutex-wire-up-RT-s-locking.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 12 Oct 2017 17:31:14 +0200 Subject: rtmutex: wire up RT's locking -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior diff --git a/debian/patches/features/all/rt/rtmutex_dont_include_rcu.patch b/debian/patches/features/all/rt/rtmutex_dont_include_rcu.patch index 387c4ec2d..c319328bd 100644 --- a/debian/patches/features/all/rt/rtmutex_dont_include_rcu.patch +++ b/debian/patches/features/all/rt/rtmutex_dont_include_rcu.patch @@ -1,6 +1,6 @@ From: Sebastian Andrzej Siewior Subject: rbtree: don't include the rcu header -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The RCU header pulls in spinlock.h and fails due not yet defined types: diff --git a/debian/patches/features/all/rt/rxrpc-remove-unused-static-variables.patch b/debian/patches/features/all/rt/rxrpc-remove-unused-static-variables.patch index 98e97a52b..b0d6040f0 100644 --- a/debian/patches/features/all/rt/rxrpc-remove-unused-static-variables.patch +++ b/debian/patches/features/all/rt/rxrpc-remove-unused-static-variables.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 21 Oct 2016 10:54:50 +0200 Subject: [PATCH] rxrpc: remove unused static variables -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The rxrpc_security_methods and rxrpc_security_sem user has been removed in 648af7fca159 ("rxrpc: Absorb the rxkad security module"). This was diff --git a/debian/patches/features/all/rt/sas-ata-isci-dont-t-disable-interrupts-in-qc_issue-h.patch b/debian/patches/features/all/rt/sas-ata-isci-dont-t-disable-interrupts-in-qc_issue-h.patch index 9453938af..bd02ab099 100644 --- a/debian/patches/features/all/rt/sas-ata-isci-dont-t-disable-interrupts-in-qc_issue-h.patch +++ b/debian/patches/features/all/rt/sas-ata-isci-dont-t-disable-interrupts-in-qc_issue-h.patch @@ -1,7 +1,7 @@ From: Paul Gortmaker Date: Sat, 14 Feb 2015 11:01:16 -0500 Subject: sas-ata/isci: dont't disable interrupts in qc_issue handler -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz On 3.14-rt we see the following trace on Canoe Pass for SCSI_ISCI "Intel(R) C600 Series Chipset SAS Controller" diff --git a/debian/patches/features/all/rt/sched-Prevent-task-state-corruption-by-spurious-lock.patch b/debian/patches/features/all/rt/sched-Prevent-task-state-corruption-by-spurious-lock.patch index a447915a0..f5661d70b 100644 --- a/debian/patches/features/all/rt/sched-Prevent-task-state-corruption-by-spurious-lock.patch +++ b/debian/patches/features/all/rt/sched-Prevent-task-state-corruption-by-spurious-lock.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Tue, 6 Jun 2017 14:20:37 +0200 Subject: sched: Prevent task state corruption by spurious lock wakeup -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Mathias and others reported GDB failures on RT. diff --git a/debian/patches/features/all/rt/sched-Remove-TASK_ALL.patch b/debian/patches/features/all/rt/sched-Remove-TASK_ALL.patch index d717ac0a5..cbb018a7f 100644 --- a/debian/patches/features/all/rt/sched-Remove-TASK_ALL.patch +++ b/debian/patches/features/all/rt/sched-Remove-TASK_ALL.patch @@ -1,7 +1,7 @@ From: Peter Zijlstra Date: Wed, 7 Jun 2017 10:12:45 +0200 Subject: [PATCH] sched: Remove TASK_ALL -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz It's unused: diff --git a/debian/patches/features/all/rt/sched-delay-put-task.patch b/debian/patches/features/all/rt/sched-delay-put-task.patch index 72e7bd63f..18883a0ac 100644 --- a/debian/patches/features/all/rt/sched-delay-put-task.patch +++ b/debian/patches/features/all/rt/sched-delay-put-task.patch @@ -1,7 +1,7 @@ Subject: sched: Move task_struct cleanup to RCU From: Thomas Gleixner Date: Tue, 31 May 2011 16:59:16 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz __put_task_struct() does quite some expensive work. We don't want to burden random tasks with that. diff --git a/debian/patches/features/all/rt/sched-disable-rt-group-sched-on-rt.patch b/debian/patches/features/all/rt/sched-disable-rt-group-sched-on-rt.patch index 4eac62f3a..3f803b501 100644 --- a/debian/patches/features/all/rt/sched-disable-rt-group-sched-on-rt.patch +++ b/debian/patches/features/all/rt/sched-disable-rt-group-sched-on-rt.patch @@ -1,7 +1,7 @@ Subject: sched: Disable CONFIG_RT_GROUP_SCHED on RT From: Thomas Gleixner Date: Mon, 18 Jul 2011 17:03:52 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Carsten reported problems when running: diff --git a/debian/patches/features/all/rt/sched-disable-ttwu-queue.patch b/debian/patches/features/all/rt/sched-disable-ttwu-queue.patch index 46e686dfa..ab54cb8d8 100644 --- a/debian/patches/features/all/rt/sched-disable-ttwu-queue.patch +++ b/debian/patches/features/all/rt/sched-disable-ttwu-queue.patch @@ -1,7 +1,7 @@ Subject: sched: Disable TTWU_QUEUE on RT From: Thomas Gleixner Date: Tue, 13 Sep 2011 16:42:35 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The queued remote wakeup mechanism can introduce rather large latencies if the number of migrated tasks is high. Disable it for RT. diff --git a/debian/patches/features/all/rt/sched-limit-nr-migrate.patch b/debian/patches/features/all/rt/sched-limit-nr-migrate.patch index d381299a6..90bf06058 100644 --- a/debian/patches/features/all/rt/sched-limit-nr-migrate.patch +++ b/debian/patches/features/all/rt/sched-limit-nr-migrate.patch @@ -1,7 +1,7 @@ Subject: sched: Limit the number of task migrations per batch From: Thomas Gleixner Date: Mon, 06 Jun 2011 12:12:51 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Put an upper limit on the number of tasks which are migrated per batch to avoid large latencies. diff --git a/debian/patches/features/all/rt/sched-might-sleep-do-not-account-rcu-depth.patch b/debian/patches/features/all/rt/sched-might-sleep-do-not-account-rcu-depth.patch index 0042ddb7d..5728decf2 100644 --- a/debian/patches/features/all/rt/sched-might-sleep-do-not-account-rcu-depth.patch +++ b/debian/patches/features/all/rt/sched-might-sleep-do-not-account-rcu-depth.patch @@ -1,7 +1,7 @@ Subject: sched: Do not account rcu_preempt_depth on RT in might_sleep() From: Thomas Gleixner Date: Tue, 07 Jun 2011 09:19:06 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz RT changes the rcu_preempt_depth semantics, so we cannot check for it in might_sleep(). diff --git a/debian/patches/features/all/rt/sched-mmdrop-delayed.patch b/debian/patches/features/all/rt/sched-mmdrop-delayed.patch index 6b541d381..d15a7ccc3 100644 --- a/debian/patches/features/all/rt/sched-mmdrop-delayed.patch +++ b/debian/patches/features/all/rt/sched-mmdrop-delayed.patch @@ -1,7 +1,7 @@ Subject: sched: Move mmdrop to RCU on RT From: Thomas Gleixner Date: Mon, 06 Jun 2011 12:20:33 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Takes sleeping locks and calls into the memory allocator, so nothing we want to do in task switch and oder atomic contexts. diff --git a/debian/patches/features/all/rt/sched-rt-mutex-wakeup.patch b/debian/patches/features/all/rt/sched-rt-mutex-wakeup.patch index 4e135153f..63fa887be 100644 --- a/debian/patches/features/all/rt/sched-rt-mutex-wakeup.patch +++ b/debian/patches/features/all/rt/sched-rt-mutex-wakeup.patch @@ -1,7 +1,7 @@ Subject: sched: Add saved_state for tasks blocked on sleeping locks From: Thomas Gleixner Date: Sat, 25 Jun 2011 09:21:04 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Spinlocks are state preserving in !RT. RT changes the state when a task gets blocked on a lock. So we need to remember the state before diff --git a/debian/patches/features/all/rt/sched-swait-include-wait.h.patch b/debian/patches/features/all/rt/sched-swait-include-wait.h.patch index 155f96e19..e6439c648 100644 --- a/debian/patches/features/all/rt/sched-swait-include-wait.h.patch +++ b/debian/patches/features/all/rt/sched-swait-include-wait.h.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Mon, 4 Dec 2017 13:11:10 +0100 Subject: [PATCH] sched/swait: include wait.h -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz kbuild bot reported against an intermediate RT patch that the build fails with: diff --git a/debian/patches/features/all/rt/sched-ttwu-ensure-success-return-is-correct.patch b/debian/patches/features/all/rt/sched-ttwu-ensure-success-return-is-correct.patch index ba6ace5ed..bb83016c1 100644 --- a/debian/patches/features/all/rt/sched-ttwu-ensure-success-return-is-correct.patch +++ b/debian/patches/features/all/rt/sched-ttwu-ensure-success-return-is-correct.patch @@ -1,7 +1,7 @@ Subject: sched: ttwu: Return success when only changing the saved_state value From: Thomas Gleixner Date: Tue, 13 Dec 2011 21:42:19 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz When a task blocks on a rt lock, it saves the current state in p->saved_state, so a lock related wake up will not destroy the diff --git a/debian/patches/features/all/rt/sched-workqueue-Only-wake-up-idle-workers-if-not-blo.patch b/debian/patches/features/all/rt/sched-workqueue-Only-wake-up-idle-workers-if-not-blo.patch index d506e4b92..4ef1c75d5 100644 --- a/debian/patches/features/all/rt/sched-workqueue-Only-wake-up-idle-workers-if-not-blo.patch +++ b/debian/patches/features/all/rt/sched-workqueue-Only-wake-up-idle-workers-if-not-blo.patch @@ -1,7 +1,7 @@ From: Steven Rostedt Date: Mon, 18 Mar 2013 15:12:49 -0400 Subject: sched/workqueue: Only wake up idle workers if not blocked on sleeping spin lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz In -rt, most spin_locks() turn into mutexes. One of these spin_lock conversions is performed on the workqueue gcwq->lock. When the idle diff --git a/debian/patches/features/all/rt/scsi-fcoe-rt-aware.patch b/debian/patches/features/all/rt/scsi-fcoe-rt-aware.patch index 0b10f3e79..6517caed0 100644 --- a/debian/patches/features/all/rt/scsi-fcoe-rt-aware.patch +++ b/debian/patches/features/all/rt/scsi-fcoe-rt-aware.patch @@ -1,7 +1,7 @@ Subject: scsi/fcoe: Make RT aware. From: Thomas Gleixner Date: Sat, 12 Nov 2011 14:00:48 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Do not disable preemption while taking sleeping locks. All user look safe for migrate_diable() only. diff --git a/debian/patches/features/all/rt/scsi-qla2xxx-fix-bug-sleeping-function-called-from-invalid-context.patch b/debian/patches/features/all/rt/scsi-qla2xxx-fix-bug-sleeping-function-called-from-invalid-context.patch index e1c26b704..306afb973 100644 --- a/debian/patches/features/all/rt/scsi-qla2xxx-fix-bug-sleeping-function-called-from-invalid-context.patch +++ b/debian/patches/features/all/rt/scsi-qla2xxx-fix-bug-sleeping-function-called-from-invalid-context.patch @@ -1,7 +1,7 @@ Subject: scsi: qla2xxx: Use local_irq_save_nort() in qla2x00_poll From: John Kacur Date: Fri, 27 Apr 2012 12:48:46 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz RT triggers the following: diff --git a/debian/patches/features/all/rt/seqlock-prevent-rt-starvation.patch b/debian/patches/features/all/rt/seqlock-prevent-rt-starvation.patch index db0892c4e..9880a104a 100644 --- a/debian/patches/features/all/rt/seqlock-prevent-rt-starvation.patch +++ b/debian/patches/features/all/rt/seqlock-prevent-rt-starvation.patch @@ -1,7 +1,7 @@ Subject: seqlock: Prevent rt starvation From: Thomas Gleixner Date: Wed, 22 Feb 2012 12:03:30 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz If a low prio writer gets preempted while holding the seqlock write locked, a high prio reader spins forever on RT. diff --git a/debian/patches/features/all/rt/signal-fix-up-rcu-wreckage.patch b/debian/patches/features/all/rt/signal-fix-up-rcu-wreckage.patch index 9d798a13f..844f84db2 100644 --- a/debian/patches/features/all/rt/signal-fix-up-rcu-wreckage.patch +++ b/debian/patches/features/all/rt/signal-fix-up-rcu-wreckage.patch @@ -1,7 +1,7 @@ Subject: signal: Make __lock_task_sighand() RT aware From: Thomas Gleixner Date: Fri, 22 Jul 2011 08:07:08 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz local_irq_save() + spin_lock(&sighand->siglock) does not work on -RT. Use the nort variants. diff --git a/debian/patches/features/all/rt/signal-revert-ptrace-preempt-magic.patch b/debian/patches/features/all/rt/signal-revert-ptrace-preempt-magic.patch index 7359827f5..f41ba58a3 100644 --- a/debian/patches/features/all/rt/signal-revert-ptrace-preempt-magic.patch +++ b/debian/patches/features/all/rt/signal-revert-ptrace-preempt-magic.patch @@ -1,7 +1,7 @@ Subject: signal: Revert ptrace preempt magic From: Thomas Gleixner Date: Wed, 21 Sep 2011 19:57:12 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Upstream commit '53da1d9456fe7f8 fix ptrace slowness' is nothing more than a bandaid around the ptrace design trainwreck. It's not a diff --git a/debian/patches/features/all/rt/signals-allow-rt-tasks-to-cache-one-sigqueue-struct.patch b/debian/patches/features/all/rt/signals-allow-rt-tasks-to-cache-one-sigqueue-struct.patch index 81ea63791..1d063006a 100644 --- a/debian/patches/features/all/rt/signals-allow-rt-tasks-to-cache-one-sigqueue-struct.patch +++ b/debian/patches/features/all/rt/signals-allow-rt-tasks-to-cache-one-sigqueue-struct.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Fri, 3 Jul 2009 08:44:56 -0500 Subject: signals: Allow rt tasks to cache one sigqueue struct -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz To avoid allocation allow rt tasks to cache one sigqueue struct in task struct. diff --git a/debian/patches/features/all/rt/skbufhead-raw-lock.patch b/debian/patches/features/all/rt/skbufhead-raw-lock.patch index 448ecb28c..5a4fe54c7 100644 --- a/debian/patches/features/all/rt/skbufhead-raw-lock.patch +++ b/debian/patches/features/all/rt/skbufhead-raw-lock.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Tue, 12 Jul 2011 15:38:34 +0200 Subject: net: Use skbufhead with raw lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Use the rps lock as rawlock so we can keep irq-off regions. It looks low latency. However we can't kfree() from this context therefore we defer this diff --git a/debian/patches/features/all/rt/slub-disable-SLUB_CPU_PARTIAL.patch b/debian/patches/features/all/rt/slub-disable-SLUB_CPU_PARTIAL.patch index afa9101c1..51a77bd03 100644 --- a/debian/patches/features/all/rt/slub-disable-SLUB_CPU_PARTIAL.patch +++ b/debian/patches/features/all/rt/slub-disable-SLUB_CPU_PARTIAL.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 15 Apr 2015 19:00:47 +0200 Subject: slub: Disable SLUB_CPU_PARTIAL -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz |BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:915 |in_atomic(): 1, irqs_disabled(): 0, pid: 87, name: rcuop/7 diff --git a/debian/patches/features/all/rt/slub-enable-irqs-for-no-wait.patch b/debian/patches/features/all/rt/slub-enable-irqs-for-no-wait.patch index 7405eb83c..bddbbe239 100644 --- a/debian/patches/features/all/rt/slub-enable-irqs-for-no-wait.patch +++ b/debian/patches/features/all/rt/slub-enable-irqs-for-no-wait.patch @@ -1,7 +1,7 @@ Subject: slub: Enable irqs for __GFP_WAIT From: Thomas Gleixner Date: Wed, 09 Jan 2013 12:08:15 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz SYSTEM_RUNNING might be too late for enabling interrupts. Allocations with GFP_WAIT can happen before that. So use this as an indicator. diff --git a/debian/patches/features/all/rt/snd-pcm-fix-snd_pcm_stream_lock-irqs_disabled-splats.patch b/debian/patches/features/all/rt/snd-pcm-fix-snd_pcm_stream_lock-irqs_disabled-splats.patch index 54172cb6e..d8eb04ddf 100644 --- a/debian/patches/features/all/rt/snd-pcm-fix-snd_pcm_stream_lock-irqs_disabled-splats.patch +++ b/debian/patches/features/all/rt/snd-pcm-fix-snd_pcm_stream_lock-irqs_disabled-splats.patch @@ -1,7 +1,7 @@ From: Mike Galbraith Date: Wed, 18 Feb 2015 15:09:23 +0100 Subject: snd/pcm: fix snd_pcm_stream_lock*() irqs_disabled() splats -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Locking functions previously using read_lock_irq()/read_lock_irqsave() were changed to local_irq_disable/save(), leading to gripes. Use nort variants. diff --git a/debian/patches/features/all/rt/softirq-disable-softirq-stacks-for-rt.patch b/debian/patches/features/all/rt/softirq-disable-softirq-stacks-for-rt.patch index 5b3a94cad..5b5a498b1 100644 --- a/debian/patches/features/all/rt/softirq-disable-softirq-stacks-for-rt.patch +++ b/debian/patches/features/all/rt/softirq-disable-softirq-stacks-for-rt.patch @@ -1,7 +1,7 @@ Subject: softirq: Disable softirq stacks for RT From: Thomas Gleixner Date: Mon, 18 Jul 2011 13:59:17 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Disable extra stacks for softirqs. We want to preempt softirqs and having them on special IRQ-stack does not make this easier. diff --git a/debian/patches/features/all/rt/softirq-preempt-fix-3-re.patch b/debian/patches/features/all/rt/softirq-preempt-fix-3-re.patch index 1e6625a81..e2d861923 100644 --- a/debian/patches/features/all/rt/softirq-preempt-fix-3-re.patch +++ b/debian/patches/features/all/rt/softirq-preempt-fix-3-re.patch @@ -1,7 +1,7 @@ Subject: softirq: Check preemption after reenabling interrupts From: Thomas Gleixner Date: Sun, 13 Nov 2011 17:17:09 +0100 (CET) -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz raise_softirq_irqoff() disables interrupts and wakes the softirq daemon, but after reenabling interrupts there is no preemption check, diff --git a/debian/patches/features/all/rt/softirq-split-locks.patch b/debian/patches/features/all/rt/softirq-split-locks.patch index ca574d897..67b511d83 100644 --- a/debian/patches/features/all/rt/softirq-split-locks.patch +++ b/debian/patches/features/all/rt/softirq-split-locks.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 04 Oct 2012 14:20:47 +0100 Subject: softirq: Split softirq locks -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The 3.x RT series removed the split softirq implementation in favour of pushing softirq processing into the context of the thread which diff --git a/debian/patches/features/all/rt/softirq-split-timer-softirqs-out-of-ksoftirqd.patch b/debian/patches/features/all/rt/softirq-split-timer-softirqs-out-of-ksoftirqd.patch index 548195843..b2d139917 100644 --- a/debian/patches/features/all/rt/softirq-split-timer-softirqs-out-of-ksoftirqd.patch +++ b/debian/patches/features/all/rt/softirq-split-timer-softirqs-out-of-ksoftirqd.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 20 Jan 2016 16:34:17 +0100 Subject: softirq: split timer softirqs out of ksoftirqd -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The softirqd runs in -RT with SCHED_FIFO (prio 1) and deals mostly with timer wakeup which can not happen in hardirq context. The prio has been diff --git a/debian/patches/features/all/rt/softirq-wake-the-timer-softirq-if-needed.patch b/debian/patches/features/all/rt/softirq-wake-the-timer-softirq-if-needed.patch index c0f18385a..fbe6b0c9b 100644 --- a/debian/patches/features/all/rt/softirq-wake-the-timer-softirq-if-needed.patch +++ b/debian/patches/features/all/rt/softirq-wake-the-timer-softirq-if-needed.patch @@ -1,7 +1,7 @@ From: Mike Galbraith Date: Fri, 20 Jan 2017 18:10:20 +0100 Subject: [PATCH] softirq: wake the timer softirq if needed -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The irq-exit path only checks the "normal"-softirq thread if it is running and ignores the state of the "timer"-softirq thread. It is possible diff --git a/debian/patches/features/all/rt/sparc64-use-generic-rwsem-spinlocks-rt.patch b/debian/patches/features/all/rt/sparc64-use-generic-rwsem-spinlocks-rt.patch index 2715e6574..e347d0b09 100644 --- a/debian/patches/features/all/rt/sparc64-use-generic-rwsem-spinlocks-rt.patch +++ b/debian/patches/features/all/rt/sparc64-use-generic-rwsem-spinlocks-rt.patch @@ -1,7 +1,7 @@ From: Allen Pais Date: Fri, 13 Dec 2013 09:44:41 +0530 Subject: sparc64: use generic rwsem spinlocks rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Signed-off-by: Allen Pais Signed-off-by: Sebastian Andrzej Siewior diff --git a/debian/patches/features/all/rt/spinlock-types-separate-raw.patch b/debian/patches/features/all/rt/spinlock-types-separate-raw.patch index 52f3d5ca4..3e797bf4e 100644 --- a/debian/patches/features/all/rt/spinlock-types-separate-raw.patch +++ b/debian/patches/features/all/rt/spinlock-types-separate-raw.patch @@ -1,7 +1,7 @@ Subject: spinlock: Split the lock types header From: Thomas Gleixner Date: Wed, 29 Jun 2011 19:34:01 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Split raw_spinlock into its own file and the remaining spinlock_t into its own non-RT header. The non-RT header will be replaced later by sleeping diff --git a/debian/patches/features/all/rt/srcu-Prohibit-call_srcu-use-under-raw-spinlocks.patch b/debian/patches/features/all/rt/srcu-Prohibit-call_srcu-use-under-raw-spinlocks.patch index d3c34412b..019fd8acd 100644 --- a/debian/patches/features/all/rt/srcu-Prohibit-call_srcu-use-under-raw-spinlocks.patch +++ b/debian/patches/features/all/rt/srcu-Prohibit-call_srcu-use-under-raw-spinlocks.patch @@ -1,7 +1,7 @@ From: "Paul E. McKenney" Date: Tue, 10 Oct 2017 13:52:30 -0700 Subject: srcu: Prohibit call_srcu() use under raw spinlocks -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Upstream commit 08265b8f1a139c1cff052b35ab7cf929528f88bb diff --git a/debian/patches/features/all/rt/srcu-replace-local_irqsave-with-a-locallock.patch b/debian/patches/features/all/rt/srcu-replace-local_irqsave-with-a-locallock.patch index 38f3a4aa9..d0a2c9d9a 100644 --- a/debian/patches/features/all/rt/srcu-replace-local_irqsave-with-a-locallock.patch +++ b/debian/patches/features/all/rt/srcu-replace-local_irqsave-with-a-locallock.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 12 Oct 2017 18:37:12 +0200 Subject: [PATCH] srcu: replace local_irqsave() with a locallock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz There are two instances which disable interrupts in order to become a stable this_cpu_ptr() pointer. The restore part is coupled with diff --git a/debian/patches/features/all/rt/srcu-use-cpu_online-instead-custom-check.patch b/debian/patches/features/all/rt/srcu-use-cpu_online-instead-custom-check.patch index fd25badc0..e4f905993 100644 --- a/debian/patches/features/all/rt/srcu-use-cpu_online-instead-custom-check.patch +++ b/debian/patches/features/all/rt/srcu-use-cpu_online-instead-custom-check.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 13 Sep 2017 14:43:41 +0200 Subject: [PATCH] srcu: use cpu_online() instead custom check -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The current check via srcu_online is slightly racy because after looking at srcu_online there could be an interrupt that interrupted us long diff --git a/debian/patches/features/all/rt/stop-machine-raw-lock.patch b/debian/patches/features/all/rt/stop-machine-raw-lock.patch index 77af958c8..3bef5a86c 100644 --- a/debian/patches/features/all/rt/stop-machine-raw-lock.patch +++ b/debian/patches/features/all/rt/stop-machine-raw-lock.patch @@ -1,7 +1,7 @@ Subject: stop_machine: Use raw spinlocks From: Thomas Gleixner Date: Wed, 29 Jun 2011 11:01:51 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Use raw-locks in stomp_machine() to allow locking in irq-off regions. diff --git a/debian/patches/features/all/rt/stop_machine-convert-stop_machine_run-to-PREEMPT_RT.patch b/debian/patches/features/all/rt/stop_machine-convert-stop_machine_run-to-PREEMPT_RT.patch index e8d64ff8b..588aca92d 100644 --- a/debian/patches/features/all/rt/stop_machine-convert-stop_machine_run-to-PREEMPT_RT.patch +++ b/debian/patches/features/all/rt/stop_machine-convert-stop_machine_run-to-PREEMPT_RT.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:30:27 -0500 Subject: stop_machine: convert stop_machine_run() to PREEMPT_RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Instead of playing with non-preemption, introduce explicit startup serialization. This is more robust and cleaner as diff --git a/debian/patches/features/all/rt/sunrpc-make-svc_xprt_do_enqueue-use-get_cpu_light.patch b/debian/patches/features/all/rt/sunrpc-make-svc_xprt_do_enqueue-use-get_cpu_light.patch index ffa4d9808..c8877d2f0 100644 --- a/debian/patches/features/all/rt/sunrpc-make-svc_xprt_do_enqueue-use-get_cpu_light.patch +++ b/debian/patches/features/all/rt/sunrpc-make-svc_xprt_do_enqueue-use-get_cpu_light.patch @@ -1,7 +1,7 @@ From: Mike Galbraith Date: Wed, 18 Feb 2015 16:05:28 +0100 Subject: sunrpc: Make svc_xprt_do_enqueue() use get_cpu_light() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz |BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:915 |in_atomic(): 1, irqs_disabled(): 0, pid: 3194, name: rpc.nfsd diff --git a/debian/patches/features/all/rt/suspend-prevernt-might-sleep-splats.patch b/debian/patches/features/all/rt/suspend-prevernt-might-sleep-splats.patch index 755cc0076..55cccc6d5 100644 --- a/debian/patches/features/all/rt/suspend-prevernt-might-sleep-splats.patch +++ b/debian/patches/features/all/rt/suspend-prevernt-might-sleep-splats.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 15 Jul 2010 10:29:00 +0200 Subject: suspend: Prevent might sleep splats -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz timekeeping suspend/resume calls read_persistant_clock() which takes rtc_lock. That results in might sleep warnings because at that point diff --git a/debian/patches/features/all/rt/sysfs-realtime-entry.patch b/debian/patches/features/all/rt/sysfs-realtime-entry.patch index 231235d98..c462d1d29 100644 --- a/debian/patches/features/all/rt/sysfs-realtime-entry.patch +++ b/debian/patches/features/all/rt/sysfs-realtime-entry.patch @@ -1,7 +1,7 @@ Subject: sysfs: Add /sys/kernel/realtime entry From: Clark Williams Date: Sat Jul 30 21:55:53 2011 -0500 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Add a /sys/kernel entry to indicate that the kernel is a realtime kernel. diff --git a/debian/patches/features/all/rt/tasklet-rt-prevent-tasklets-from-going-into-infinite-spin-in-rt.patch b/debian/patches/features/all/rt/tasklet-rt-prevent-tasklets-from-going-into-infinite-spin-in-rt.patch index 3c5cb5dd3..528af9d59 100644 --- a/debian/patches/features/all/rt/tasklet-rt-prevent-tasklets-from-going-into-infinite-spin-in-rt.patch +++ b/debian/patches/features/all/rt/tasklet-rt-prevent-tasklets-from-going-into-infinite-spin-in-rt.patch @@ -1,7 +1,7 @@ Subject: tasklet: Prevent tasklets from going into infinite spin in RT From: Ingo Molnar Date: Tue Nov 29 20:18:22 2011 -0500 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz When CONFIG_PREEMPT_RT_FULL is enabled, tasklets run as threads, and spinlocks turn are mutexes. But this can cause issues with diff --git a/debian/patches/features/all/rt/thermal-Defer-thermal-wakups-to-threads.patch b/debian/patches/features/all/rt/thermal-Defer-thermal-wakups-to-threads.patch index 58204f0ab..f0976634c 100644 --- a/debian/patches/features/all/rt/thermal-Defer-thermal-wakups-to-threads.patch +++ b/debian/patches/features/all/rt/thermal-Defer-thermal-wakups-to-threads.patch @@ -1,7 +1,7 @@ From: Daniel Wagner Date: Tue, 17 Feb 2015 09:37:44 +0100 Subject: thermal: Defer thermal wakups to threads -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz On RT the spin lock in pkg_temp_thermal_platfrom_thermal_notify will call schedule while we run in irq context. diff --git a/debian/patches/features/all/rt/time-hrtimer-avoid-schedule_work-with-interrupts-dis.patch b/debian/patches/features/all/rt/time-hrtimer-avoid-schedule_work-with-interrupts-dis.patch index 8bfcf37b1..cd8b17c9f 100644 --- a/debian/patches/features/all/rt/time-hrtimer-avoid-schedule_work-with-interrupts-dis.patch +++ b/debian/patches/features/all/rt/time-hrtimer-avoid-schedule_work-with-interrupts-dis.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 15 Nov 2017 17:29:51 +0100 Subject: [PATCH] time/hrtimer: avoid schedule_work() with interrupts disabled -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The NOHZ code tries to schedule a workqueue with interrupts disabled. Since this does not work -RT I am switching it to swork instead. diff --git a/debian/patches/features/all/rt/timekeeping-split-jiffies-lock.patch b/debian/patches/features/all/rt/timekeeping-split-jiffies-lock.patch index e9e1cbea4..db46aff04 100644 --- a/debian/patches/features/all/rt/timekeeping-split-jiffies-lock.patch +++ b/debian/patches/features/all/rt/timekeeping-split-jiffies-lock.patch @@ -1,7 +1,7 @@ Subject: timekeeping: Split jiffies seqlock From: Thomas Gleixner Date: Thu, 14 Feb 2013 22:36:59 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Replace jiffies_lock seqlock with a simple seqcounter and a rawlock so it can be taken in atomic context on RT. diff --git a/debian/patches/features/all/rt/timer-delay-waking-softirqs-from-the-jiffy-tick.patch b/debian/patches/features/all/rt/timer-delay-waking-softirqs-from-the-jiffy-tick.patch index 1ce0986f9..fbf4ef928 100644 --- a/debian/patches/features/all/rt/timer-delay-waking-softirqs-from-the-jiffy-tick.patch +++ b/debian/patches/features/all/rt/timer-delay-waking-softirqs-from-the-jiffy-tick.patch @@ -1,7 +1,7 @@ From: Peter Zijlstra Date: Fri, 21 Aug 2009 11:56:45 +0200 Subject: timer: delay waking softirqs from the jiffy tick -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz People were complaining about broken balancing with the recent -rt series. diff --git a/debian/patches/features/all/rt/timer-fd-avoid-live-lock.patch b/debian/patches/features/all/rt/timer-fd-avoid-live-lock.patch index d21a9cc53..4b6ad9669 100644 --- a/debian/patches/features/all/rt/timer-fd-avoid-live-lock.patch +++ b/debian/patches/features/all/rt/timer-fd-avoid-live-lock.patch @@ -1,7 +1,7 @@ Subject: timer-fd: Prevent live lock From: Thomas Gleixner Date: Wed, 25 Jan 2012 11:08:40 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz If hrtimer_try_to_cancel() requires a retry, then depending on the priority setting te retry loop might prevent timer callback completion diff --git a/debian/patches/features/all/rt/timers-prepare-for-full-preemption.patch b/debian/patches/features/all/rt/timers-prepare-for-full-preemption.patch index 104c666d2..bd65581d8 100644 --- a/debian/patches/features/all/rt/timers-prepare-for-full-preemption.patch +++ b/debian/patches/features/all/rt/timers-prepare-for-full-preemption.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:29:34 -0500 Subject: timers: Prepare for full preemption -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz When softirqs can be preempted we need to make sure that cancelling the timer from the active thread can not deadlock vs. a running timer diff --git a/debian/patches/features/all/rt/tpm_tis-fix-stall-after-iowrite-s.patch b/debian/patches/features/all/rt/tpm_tis-fix-stall-after-iowrite-s.patch index 4f729043d..ba4bb6d37 100644 --- a/debian/patches/features/all/rt/tpm_tis-fix-stall-after-iowrite-s.patch +++ b/debian/patches/features/all/rt/tpm_tis-fix-stall-after-iowrite-s.patch @@ -1,7 +1,7 @@ From: Haris Okanovic Date: Tue, 15 Aug 2017 15:13:08 -0500 Subject: [PATCH] tpm_tis: fix stall after iowrite*()s -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz ioread8() operations to TPM MMIO addresses can stall the cpu when immediately following a sequence of iowrite*()'s to the same region. diff --git a/debian/patches/features/all/rt/tracing-account-for-preempt-off-in-preempt_schedule.patch b/debian/patches/features/all/rt/tracing-account-for-preempt-off-in-preempt_schedule.patch index 90801c2b9..9a1aaa1b8 100644 --- a/debian/patches/features/all/rt/tracing-account-for-preempt-off-in-preempt_schedule.patch +++ b/debian/patches/features/all/rt/tracing-account-for-preempt-off-in-preempt_schedule.patch @@ -1,7 +1,7 @@ From: Steven Rostedt Date: Thu, 29 Sep 2011 12:24:30 -0500 Subject: tracing: Account for preempt off in preempt_schedule() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz The preempt_schedule() uses the preempt_disable_notrace() version because it can cause infinite recursion by the function tracer as diff --git a/debian/patches/features/all/rt/tty-goldfish-Enable-earlycon-only-if-built-in.patch b/debian/patches/features/all/rt/tty-goldfish-Enable-earlycon-only-if-built-in.patch index 712022ae3..b7f87ce6b 100644 --- a/debian/patches/features/all/rt/tty-goldfish-Enable-earlycon-only-if-built-in.patch +++ b/debian/patches/features/all/rt/tty-goldfish-Enable-earlycon-only-if-built-in.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 29 Nov 2017 16:32:20 +0100 Subject: [PATCH] tty: goldfish: Enable 'earlycon' only if built-in -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Commit 3840ed9548f7 ("tty: goldfish: Implement support for kernel 'earlycon' parameter") breaks an allmodconfig config on x86: diff --git a/debian/patches/features/all/rt/tty-serial-8250-don-t-take-the-trylock-during-oops.patch b/debian/patches/features/all/rt/tty-serial-8250-don-t-take-the-trylock-during-oops.patch index 021a631c5..533436998 100644 --- a/debian/patches/features/all/rt/tty-serial-8250-don-t-take-the-trylock-during-oops.patch +++ b/debian/patches/features/all/rt/tty-serial-8250-don-t-take-the-trylock-during-oops.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Mon, 11 Apr 2016 16:55:02 +0200 Subject: [PATCH] tty: serial: 8250: don't take the trylock during oops -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz An oops with irqs off (panic() from irqsafe hrtimer like the watchdog timer) will lead to a lockdep warning on each invocation and as such diff --git a/debian/patches/features/all/rt/upstream-net-rt-remove-preemption-disabling-in-netif_rx.patch b/debian/patches/features/all/rt/upstream-net-rt-remove-preemption-disabling-in-netif_rx.patch index 04100d440..2f184a6f9 100644 --- a/debian/patches/features/all/rt/upstream-net-rt-remove-preemption-disabling-in-netif_rx.patch +++ b/debian/patches/features/all/rt/upstream-net-rt-remove-preemption-disabling-in-netif_rx.patch @@ -1,7 +1,7 @@ Subject: net: Remove preemption disabling in netif_rx() From: Priyanka Jain Date: Thu, 17 May 2012 09:35:11 +0530 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz 1)enqueue_to_backlog() (called from netif_rx) should be bind to a particluar CPU. This can be achieved by diff --git a/debian/patches/features/all/rt/usb-use-_nort-in-giveback.patch b/debian/patches/features/all/rt/usb-use-_nort-in-giveback.patch index bd17c052e..8f7b9eed5 100644 --- a/debian/patches/features/all/rt/usb-use-_nort-in-giveback.patch +++ b/debian/patches/features/all/rt/usb-use-_nort-in-giveback.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 8 Nov 2013 17:34:54 +0100 Subject: usb: Use _nort in giveback function -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Since commit 94dfd7ed ("USB: HCD: support giveback of URB in tasklet context") I see diff --git a/debian/patches/features/all/rt/user-use-local-irq-nort.patch b/debian/patches/features/all/rt/user-use-local-irq-nort.patch index 47b5f1402..aa873daf4 100644 --- a/debian/patches/features/all/rt/user-use-local-irq-nort.patch +++ b/debian/patches/features/all/rt/user-use-local-irq-nort.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Tue, 21 Jul 2009 23:06:05 +0200 Subject: core: Do not disable interrupts on RT in kernel/users.c -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Use the local_irq_*_nort variants to reduce latencies in RT. The code is serialized by the locks. No need to disable interrupts. diff --git a/debian/patches/features/all/rt/wait.h-include-atomic.h.patch b/debian/patches/features/all/rt/wait.h-include-atomic.h.patch index 81b4fd257..99b3482e7 100644 --- a/debian/patches/features/all/rt/wait.h-include-atomic.h.patch +++ b/debian/patches/features/all/rt/wait.h-include-atomic.h.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Mon, 28 Oct 2013 12:19:57 +0100 Subject: wait.h: include atomic.h -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz | CC init/main.o |In file included from include/linux/mmzone.h:9:0, diff --git a/debian/patches/features/all/rt/work-queue-work-around-irqsafe-timer-optimization.patch b/debian/patches/features/all/rt/work-queue-work-around-irqsafe-timer-optimization.patch index f3f7e2eb8..e0cd4d7c2 100644 --- a/debian/patches/features/all/rt/work-queue-work-around-irqsafe-timer-optimization.patch +++ b/debian/patches/features/all/rt/work-queue-work-around-irqsafe-timer-optimization.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Mon, 01 Jul 2013 11:02:42 +0200 Subject: workqueue: Prevent workqueue versus ata-piix livelock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz An Intel i7 system regularly detected rcu_preempt stalls after the kernel was upgraded from 3.6-rt to 3.8-rt. When the stall happened, disk I/O was no diff --git a/debian/patches/features/all/rt/work-simple-Simple-work-queue-implemenation.patch b/debian/patches/features/all/rt/work-simple-Simple-work-queue-implemenation.patch index 63de2b74c..38acf9b18 100644 --- a/debian/patches/features/all/rt/work-simple-Simple-work-queue-implemenation.patch +++ b/debian/patches/features/all/rt/work-simple-Simple-work-queue-implemenation.patch @@ -1,7 +1,7 @@ From: Daniel Wagner Date: Fri, 11 Jul 2014 15:26:11 +0200 Subject: work-simple: Simple work queue implemenation -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Provides a framework for enqueuing callbacks from irq context PREEMPT_RT_FULL safe. The callbacks are executed in kthread context. diff --git a/debian/patches/features/all/rt/workqueue-distangle-from-rq-lock.patch b/debian/patches/features/all/rt/workqueue-distangle-from-rq-lock.patch index c9bd8be52..a9023d9b0 100644 --- a/debian/patches/features/all/rt/workqueue-distangle-from-rq-lock.patch +++ b/debian/patches/features/all/rt/workqueue-distangle-from-rq-lock.patch @@ -22,7 +22,7 @@ Cc: Jens Axboe Cc: Linus Torvalds Link: http://lkml.kernel.org/r/20110622174919.135236139@linutronix.de Signed-off-by: Thomas Gleixner -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz --- kernel/sched/core.c | 84 +++++++------------------------------------- diff --git a/debian/patches/features/all/rt/workqueue-prevent-deadlock-stall.patch b/debian/patches/features/all/rt/workqueue-prevent-deadlock-stall.patch index 8cc2f2606..b86226d7f 100644 --- a/debian/patches/features/all/rt/workqueue-prevent-deadlock-stall.patch +++ b/debian/patches/features/all/rt/workqueue-prevent-deadlock-stall.patch @@ -1,7 +1,7 @@ Subject: workqueue: Prevent deadlock/stall on RT From: Thomas Gleixner Date: Fri, 27 Jun 2014 16:24:52 +0200 (CEST) -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Austin reported a XFS deadlock/stall on RT where scheduled work gets never exececuted and tasks are waiting for each other for ever. diff --git a/debian/patches/features/all/rt/workqueue-use-locallock.patch b/debian/patches/features/all/rt/workqueue-use-locallock.patch index 32de1dcff..b0bcd6696 100644 --- a/debian/patches/features/all/rt/workqueue-use-locallock.patch +++ b/debian/patches/features/all/rt/workqueue-use-locallock.patch @@ -1,7 +1,7 @@ Subject: workqueue: Use local irq lock instead of irq disable regions From: Thomas Gleixner Date: Sun, 17 Jul 2011 21:42:26 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Use a local_irq_lock as a replacement for irq off regions. We keep the semantic of irq-off in regard to the pool->lock and remain preemptible. diff --git a/debian/patches/features/all/rt/workqueue-use-rcu.patch b/debian/patches/features/all/rt/workqueue-use-rcu.patch index 8be35f682..ef8e02580 100644 --- a/debian/patches/features/all/rt/workqueue-use-rcu.patch +++ b/debian/patches/features/all/rt/workqueue-use-rcu.patch @@ -1,7 +1,7 @@ Subject: workqueue: Use normal rcu From: Thomas Gleixner Date: Wed, 24 Jul 2013 15:26:54 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz There is no need for sched_rcu. The undocumented reason why sched_rcu is used is to avoid a few explicit rcu_read_lock()/unlock() pairs by diff --git a/debian/patches/features/all/rt/x86-UV-raw_spinlock-conversion.patch b/debian/patches/features/all/rt/x86-UV-raw_spinlock-conversion.patch index c0c794340..371207c30 100644 --- a/debian/patches/features/all/rt/x86-UV-raw_spinlock-conversion.patch +++ b/debian/patches/features/all/rt/x86-UV-raw_spinlock-conversion.patch @@ -1,7 +1,7 @@ From: Mike Galbraith Date: Sun, 2 Nov 2014 08:31:37 +0100 Subject: x86: UV: raw_spinlock conversion -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Shrug. Lots of hobbyists have a beast in their basement, right? diff --git a/debian/patches/features/all/rt/x86-crypto-reduce-preempt-disabled-regions.patch b/debian/patches/features/all/rt/x86-crypto-reduce-preempt-disabled-regions.patch index 4812e645e..d197e32b6 100644 --- a/debian/patches/features/all/rt/x86-crypto-reduce-preempt-disabled-regions.patch +++ b/debian/patches/features/all/rt/x86-crypto-reduce-preempt-disabled-regions.patch @@ -1,7 +1,7 @@ Subject: x86: crypto: Reduce preempt disabled regions From: Peter Zijlstra Date: Mon, 14 Nov 2011 18:19:27 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Restrict the preempt disabled regions to the actual floating point operations and enable preemption for the administrative actions. diff --git a/debian/patches/features/all/rt/x86-highmem-add-a-already-used-pte-check.patch b/debian/patches/features/all/rt/x86-highmem-add-a-already-used-pte-check.patch index bfbc3efaa..8ef0846cf 100644 --- a/debian/patches/features/all/rt/x86-highmem-add-a-already-used-pte-check.patch +++ b/debian/patches/features/all/rt/x86-highmem-add-a-already-used-pte-check.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Mon, 11 Mar 2013 17:09:55 +0100 Subject: x86/highmem: Add a "already used pte" check -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz This is a copy from kmap_atomic_prot(). diff --git a/debian/patches/features/all/rt/x86-io-apic-migra-no-unmask.patch b/debian/patches/features/all/rt/x86-io-apic-migra-no-unmask.patch index d9263356a..69a87af8a 100644 --- a/debian/patches/features/all/rt/x86-io-apic-migra-no-unmask.patch +++ b/debian/patches/features/all/rt/x86-io-apic-migra-no-unmask.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:29:27 -0500 Subject: x86/ioapic: Do not unmask io_apic when interrupt is in progress -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz With threaded interrupts we might see an interrupt in progress on migration. Do not unmask it when this is the case. diff --git a/debian/patches/features/all/rt/x86-kvm-require-const-tsc-for-rt.patch b/debian/patches/features/all/rt/x86-kvm-require-const-tsc-for-rt.patch index f82eb6e91..7edc34b36 100644 --- a/debian/patches/features/all/rt/x86-kvm-require-const-tsc-for-rt.patch +++ b/debian/patches/features/all/rt/x86-kvm-require-const-tsc-for-rt.patch @@ -1,7 +1,7 @@ Subject: x86: kvm Require const tsc for RT From: Thomas Gleixner Date: Sun, 06 Nov 2011 12:26:18 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Non constant TSC is a nightmare on bare metal already, but with virtualization it becomes a complete disaster because the workarounds diff --git a/debian/patches/features/all/rt/x86-mce-timer-hrtimer.patch b/debian/patches/features/all/rt/x86-mce-timer-hrtimer.patch index 957a6c5d8..51efec51f 100644 --- a/debian/patches/features/all/rt/x86-mce-timer-hrtimer.patch +++ b/debian/patches/features/all/rt/x86-mce-timer-hrtimer.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Mon, 13 Dec 2010 16:33:39 +0100 Subject: x86: Convert mce timer to hrtimer -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz mce_timer is started in atomic contexts of cpu bringup. This results in might_sleep() warnings on RT. Convert mce_timer to a hrtimer to diff --git a/debian/patches/features/all/rt/x86-mce-use-swait-queue-for-mce-wakeups.patch b/debian/patches/features/all/rt/x86-mce-use-swait-queue-for-mce-wakeups.patch index dd403dcd3..6217505f3 100644 --- a/debian/patches/features/all/rt/x86-mce-use-swait-queue-for-mce-wakeups.patch +++ b/debian/patches/features/all/rt/x86-mce-use-swait-queue-for-mce-wakeups.patch @@ -1,7 +1,7 @@ Subject: x86/mce: use swait queue for mce wakeups From: Steven Rostedt Date: Fri, 27 Feb 2015 15:20:37 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz We had a customer report a lockup on a 3.0-rt kernel that had the following backtrace: diff --git a/debian/patches/features/all/rt/x86-preempt-lazy.patch b/debian/patches/features/all/rt/x86-preempt-lazy.patch index 8467ca52d..7444dd4c9 100644 --- a/debian/patches/features/all/rt/x86-preempt-lazy.patch +++ b/debian/patches/features/all/rt/x86-preempt-lazy.patch @@ -1,7 +1,7 @@ Subject: x86: Support for lazy preemption From: Thomas Gleixner Date: Thu, 01 Nov 2012 11:03:47 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Implement the x86 pieces for lazy preempt. diff --git a/debian/patches/features/all/rt/x86-signal-delay-calling-signals-on-32bit.patch b/debian/patches/features/all/rt/x86-signal-delay-calling-signals-on-32bit.patch index 3058fb5c8..90f602472 100644 --- a/debian/patches/features/all/rt/x86-signal-delay-calling-signals-on-32bit.patch +++ b/debian/patches/features/all/rt/x86-signal-delay-calling-signals-on-32bit.patch @@ -1,7 +1,7 @@ From: Yang Shi Date: Thu, 10 Dec 2015 10:58:51 -0800 Subject: x86/signal: delay calling signals on 32bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz When running some ptrace single step tests on x86-32 machine, the below problem is triggered: diff --git a/debian/patches/features/all/rt/x86-stackprot-no-random-on-rt.patch b/debian/patches/features/all/rt/x86-stackprot-no-random-on-rt.patch index fcda60888..bcef17d2b 100644 --- a/debian/patches/features/all/rt/x86-stackprot-no-random-on-rt.patch +++ b/debian/patches/features/all/rt/x86-stackprot-no-random-on-rt.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 16 Dec 2010 14:25:18 +0100 Subject: x86: stackprotector: Avoid random pool on rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz CPU bringup calls into the random pool to initialize the stack canary. During boot that works nicely even on RT as the might sleep diff --git a/debian/patches/features/all/rt/x86-use-gen-rwsem-spinlocks-rt.patch b/debian/patches/features/all/rt/x86-use-gen-rwsem-spinlocks-rt.patch index e2cfe7733..bd1f6cbb0 100644 --- a/debian/patches/features/all/rt/x86-use-gen-rwsem-spinlocks-rt.patch +++ b/debian/patches/features/all/rt/x86-use-gen-rwsem-spinlocks-rt.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Sun, 26 Jul 2009 02:21:32 +0200 Subject: x86: Use generic rwsem_spinlocks on -rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz Simplifies the separation of anon_rw_semaphores and rw_semaphores for -rt. diff --git a/debian/patches/features/all/rt/xen-9pfs-don-t-inclide-rwlock.h-directly.patch b/debian/patches/features/all/rt/xen-9pfs-don-t-inclide-rwlock.h-directly.patch index 363d3bce6..ee91ae42f 100644 --- a/debian/patches/features/all/rt/xen-9pfs-don-t-inclide-rwlock.h-directly.patch +++ b/debian/patches/features/all/rt/xen-9pfs-don-t-inclide-rwlock.h-directly.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 5 Oct 2017 14:38:52 +0200 Subject: [PATCH] xen/9pfs: don't inclide rwlock.h directly. -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.6-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.8-rt9.tar.xz rwlock.h should not be included directly. Instead linux/splinlock.h should be included. One thing it does is to break the RT build. diff --git a/debian/patches/series-rt b/debian/patches/series-rt index 64795c933..9e757fbfc 100644 --- a/debian/patches/series-rt +++ b/debian/patches/series-rt @@ -15,7 +15,13 @@ features/all/rt/rcu-Suppress-lockdep-false-positive-boost_mtx-compla.patch # Stuff broken upstream, patches submitted ############################################################ -# soft hrtimer patches (v3) +# Timer/NOHZ fixups +features/all/rt/0001-timer-Use-deferrable-base-independent-of-base-nohz_a.patch +features/all/rt/0002-nohz-Prevent-erroneous-tick-stop-invocations.patch +features/all/rt/0003-timer-Invoke-timer_start_debug-where-it-makes-sense.patch +features/all/rt/0004-timerqueue-Document-return-values-of-timerqueue_add-.patch + +# soft hrtimer patches (v4) features/all/rt/0001-timers-Use-static-keys-for-migrate_enable-nohz_activ.patch features/all/rt/0002-hrtimer-Correct-blantanly-wrong-comment.patch features/all/rt/0003-hrtimer-Fix-kerneldoc-for-struct-hrtimer_cpu_base.patch @@ -52,7 +58,6 @@ features/all/rt/0033-softirq-Remove-tasklet_hrtimer.patch features/all/rt/0034-ALSA-dummy-Replace-tasklet-with-softirq-hrtimer.patch features/all/rt/0035-usb-gadget-NCM-Replace-tasklet-with-softirq-hrtimer.patch features/all/rt/0036-net-mvpp2-Replace-tasklet-with-softirq-hrtimer.patch -features/all/rt/hrtimer-account-for-migrated-timers.patch # Those two should vanish soon (not use PIT during bootup) features/all/rt/at91_dont_enable_disable_clock.patch