diff --git a/debian/changelog b/debian/changelog index 3fda4efb2..a489df980 100644 --- a/debian/changelog +++ b/debian/changelog @@ -36,6 +36,253 @@ linux (4.9~rc3-1~exp1) experimental; urgency=medium -- Ben Hutchings Thu, 03 Nov 2016 16:51:55 -0600 +linux (4.8.7-1) unstable; urgency=medium + + * New upstream stable update: + https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.6 + - [armhf,arm64] drm/vc4: Fix races when the CS reads from render targets. + - [x86] drm/i915/backlight: setup and cache pwm alternate increment value + - [x86] drm/i915/backlight: setup backlight pwm alternate increment on + backlight enable + - [x86] drm/amdgpu: fix IB alignment for UVD + - [x86] drm/amdgpu/dce10: disable hpd on local panels + - [x86] drm/amdgpu/dce8: disable hpd on local panels + - [x86] drm/amdgpu/dce11: disable hpd on local panels + - [x86] drm/amdgpu/dce11: add missing drm_mode_config_cleanup call + - [x86] drm/amdgpu: initialize the context reset_counter in amdgpu_ctx_init + - [x86] drm/amdgpu: change vblank_time's calculation method to reduce + computational error. + - drm/radeon: narrow asic_init for virtualization + - drm/radeon/si/dpm: fix phase shedding setup + - drm/radeon: change vblank_time's calculation method to reduce + computational error. + - [x86] drm/vmwgfx: Limit the user-space command buffer size + - [x86] drm/amd/powerplay: fix mclk not switching back after multi-head + was disabled + - [x86] drm/i915/skl: Fix FIFO underrun (Closes: #844113) + + Update plane watermarks atomically during plane updates + + Move CRTC updating in atomic_commit into it's own hook + + Update DDB values atomically with wms/plane attrs + + Don't try to update plane watermarks if they haven't changed + - [x86] drm/i915/gen9: only add the planes actually affected by ddb changes + - [x86] drm/i915/gen9: fix the WaWmMemoryReadLatency implementation + - [x86] drm/i915/gen9: minimum scanlines for Y tile is not always 4 + - [x86] drm/i915/gen9: fix plane_blocks_per_line on watermarks calculations + - [x86] drm/i915/gen9: fix the watermark res_blocks value + - [x86] drm/i915: SAGV is not SKL-only, so rename a few things + - [x86] drm/i915: introduce intel_has_sagv() + - [x86] drm/i915/kbl: KBL also needs to run the SAGV code + - [x86] Revert "drm/i915: Check live status before reading edid" + - [x86] drm/i915: Account for TSEG size when determining 865G stolen base + - [x86] drm/i915/skl: Ensure pipes with changed wms get added to the state + - [x86] drm/i915: Allow PCH DPLL sharing regardless of DPLL_SDVO_HIGH_SPEED + - [x86] drm/i915: Move long hpd handling into the hotplug work + - [x86] drm/i915: Allow DP to work w/o EDID + - [x86] drm/i915: Just clear the mmiodebug before a register access + - [x86] drm/i915: Unalias obj->phys_handle and obj->userptr + - rt2x00usb: Fix error return code + - uio: fix dmem_region_start computation + - i40e: remove a stray unlock + - i40e: fix broken i40e_config_rss_aq function + - mwifiex: correct aid value during tdls setup + - mwifiex: fix failed to reconnect after interface disabled/enabled + - ath10k: Add WMI_SERVICE_PERIODIC_CHAN_STAT_SUPPORT wmi service + - ath10k: fix sending frame in management path in push txq logic + - ath10k: fix reporting channel survey data + - ath10k: fix throughput regression in multi client mode + - [armel/marvell,armhf] crypto: marvell - Don't overwrite default + creq->state during initialization + - crypto: gcm - Fix IV buffer size in crypto_gcm_setkey + - [armel/marvell,armhf] crypto: marvell - Update transformation context for + each dequeued req + - [x86] crypto: ccp - Fix return value check in ccp_dmaengine_register() + - [armhf] hwrng: omap - Only fail if pm_runtime_get_sync returns < 0 + - ASoC: topology: Fix error return code in soc_tplg_dapm_widget_create() + - ASoC: dapm: Fix possible uninitialized variable in + snd_soc_dapm_get_volsw() + - ASoC: dapm: Fix value setting for _ENUM_DOUBLE MUX's second channel + - ASoC: dapm: Fix kcontrol creation for output driver widget + - staging: r8188eu: Fix scheduling while atomic splat + - IB/qib: Remove qpt_mask global + - IB/mlx5: Fix steering resource leak + - mm/hugetlb: check for reserved hugepages during memory offline + - mm/hugetlb: improve locking in dissolve_free_huge_pages() + - [x86] drm/vmwgfx: Avoid validating views on view destruction + - [s390x] cio: fix accidental interrupt enabling during resume + - [s390x] con3270: fix use of uninitialised data + - [s390x] con3270: fix insufficient space padding + - [armhf,arm64] clk: bcm2835: Skip PLLC clocks when deciding on a new + clock parent + - [arm64] clk: gcc-msm8996: Fix pcie 2 pipe register offset + - [arm64] clk: qcom: select GDSC for msm8996 gcc and mmcc + - clk: Return errors from clk providers in __of_clk_get_from_provider() + - clk: core: Force setting the phase delay when no change + - clk: divider: Fix clk_divider_round_rate() to use clk_readl() + - perf hists browser: Fix event group display + - perf ui/tui: Reset output width for hierarchy + - perf ui/stdio: Always reset output width for hierarchy + - perf symbols: Check symbol_conf.allow_aliases for kallsyms loading too + - perf symbols: Fixup symbol sizes before picking best ones + - iwlwifi: check for valid ethernet address provided by OEM + - iwlwifi: mvm: fix pending frames tracking on tx resp + - iwlwifi: mvm: call a different txq_enable function + - iwlwifi: mvm: free reserved queue on STA removal + - iwlwifi: mvm: support BAR in reorder buffer + - iwlwifi: mvm: disable P2P queue on mac context release + - iwlwifi: mvm: bail out if CTDP start operation fails + - [armhf,arm64] pinctrl: qcom: fix masking of pinmux functions + - mpt3sas: Don't spam logs if logging level is 0 + - [powerpc*] Always restore FPU/VEC/VSX if hardware transactional memory + in use + - [powerpc*] Add check_if_tm_restore_required() to giveup_all() + - [powerpc*] nvram: Fix an incorrect partition merge + - [powerpc*] Fix usage of _PAGE_RO in hugepage + - [armhf] dts: omap3: overo: add missing unit name for lcd35 display + - PCI: generic: Fix pci_remap_iospace() failure path + - [armhf] PCI: tegra: Fix pci_remap_iospace() failure path + - libnvdimm: clear the internal poison_list when clearing badblocks + https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.7 + - [armhf] i2c: rk3x: Give the tuning value 0 during + rk3x_i2c_v0_calc_timings + - i2c: core: fix NULL pointer dereference under race condition + - drm/dp/mst: Clear port->pdt when tearing down the i2c adapter + - gpio / ACPI: fix returned error from acpi_dev_gpio_irq_get() + - gpio: GPIO_GET_CHIPINFO_IOCTL: Fix line offset validation + - gpio: GPIO_GET_CHIPINFO_IOCTL: Fix information leak + - gpio: GPIO_GET_LINEHANDLE_IOCTL: Validate line offset + - gpio: GPIOHANDLE_GET_LINE_VALUES_IOCTL: Fix information leak + - gpio: GPIO_GET_LINEEVENT_IOCTL: Validate line offset + - gpio: GPIO_GET_LINEHANDLE_IOCTL: Reject invalid line flags + - gpio: GPIO_GET_LINEEVENT_IOCTL: Reject invalid line and event flags + - gpio: GPIOHANDLE_GET_LINE_VALUES_IOCTL: Fix another information leak + - gpio: GPIO_GET_LINE{HANDLE,EVENT}_IOCTL: Fix file descriptor leak + - libxfs: clean up _calc_dquots_per_chunk + - mm/list_lru.c: avoid error-path NULL pointer deref + - mm/slab: fix kmemcg cache creation delayed issue + - mm: memcontrol: do not recurse in direct reclaim + - [x86] thermal/powerclamp: correct cpu support check + - KEYS: Fix short sprintf buffer in /proc/keys show function + - ALSA: usb-audio: Add quirk for Syntek STK1160 + - ALSA: seq: Fix time account regression + - ALSA: hda - allow 40 bit DMA mask for NVidia devices + - ALSA: hda - Adding a new group of pin cfg into ALC295 pin quirk table + - ALSA: hda - Fix surround output pins for ASRock B150M mobo + - ALSA: hda - Fix headset mic detection problem for two Dell laptops + - [powerpc*] cxl: Fix leaking pid refs in some error paths + - btrfs: fix races on root_log_ctx lists + - [powerpc] Convert cmp to cmpd in idle enter sequence + - [powerpc] mm/radix: Use tlbiel only if we ever ran on the current cpu + - [powerpc] Re-fix race condition between going idle and entering guest + - [powerpc] Fix race condition in setting lock bit in idle/wakeup code + - [amd64] x86/microcode/AMD: Fix more fallout from + CONFIG_RANDOMIZE_MEMORY=y + - timers: Prevent base clock rewind when forwarding clock + - timers: Prevent base clock corruption when forwarding + - timers: Plug locking race vs. timer migration + - timers: Lock base for same bucket optimization + - mei: txe: don't clean an unprocessed interrupt cause. + - USB: serial: fix potential NULL-dereference at probe + - USB: serial: cp210x: fix tiocmget error handling + - USB: serial: ftdi_sio: add support for Infineon TriBoard TC2X7 + - xhci: use default USB_RESUME_TIMEOUT when resuming ports. + - usb: increase ohci watchdog delay to 275 msec (Closes: #842863) + - [powerpc] GenWQE: Fix bad page access during abort of resource + allocation + - [x86] smpboot: Init apic mapping before usage + - vt: clear selection before resizing + - [x86] hv: do not lose pending heartbeat vmbus packets + - xhci: add restart quirk for Intel Wildcatpoint PCH + - xhci: workaround for hosts missing CAS bit + - tty: limit terminal size to 4M chars + - [arm64] dts: marvell: fix clocksource for CP110 master SPI0 + - dm: free io_barrier after blk_cleanup_queue call + - [x86] KVM: fix wbinvd_dirty_mask use-after-free + - [s390] KVM: Fix STHYI buffer alignment for diag224 + - [armhf] mvebu: Select corediv clk for all mvebu v7 SoC + - nfsd: Fix general protection fault in release_lock_stateid() + - [mips*] KASLR: Fix handling of NULL FDT + - ovl: fix get_acl() on tmpfs + - ovl: update S_ISGID when setting posix ACLs + - ovl: fsync after copy-up + - virtio_ring: Make interrupt suppression spec compliant + - virtio_pci: Limit DMA mask to 44 bits for legacy virtio devices + - virtio: console: Unlock vqs while freeing buffers + - dm mirror: fix read error on recovery after default leg failure + - dm table: fix missing dm_put_target_type() in dm_table_add_target() + - dm rq: clear kworker_task if kthread_run() returned an error + - dm raid: fix compat_features validation (Closes: #843572) + - dm raid: fix activation of existing raid4/10 devices + - firewire: net: guard against rx buffer overflows (CVE-2016-8633) + - firewire: net: fix fragmented datagram_size off-by-one + - mac80211: discard multicast and 4-addr A-MSDUs + - ath10k: cache calibration data when the core is stopped + - scsi: scsi_debug: Fix memory leak if LBP enabled and module is unloaded + - scsi: arcmsr: Send SYNCHRONIZE_CACHE command to firmware + - [arm64, armhf] mmc: dw_mmc-pltfm: fix the potential NULL pointer + dereference + - RAID1: ignore discard error + - RAID10: ignore discard error + - md: be careful not lot leak internal curr_resync value into metadata. + - Revert "drm/radeon: fix DP link training issue with second 4K monitor" + - [armhf] drm/imx: ipuv3-plane: Switch EBA buffer only when we don't need + modeset + - [armhf] drm/imx: ipuv3-plane: Access old u/vbo properly in + ->atomic_check for YU12/YV12 + - drm/radeon/si_dpm: Limit clocks on HD86xx part + - drm/radeon/si_dpm: workaround for SI kickers + - drm/radeon: drop register readback in cayman_cp_int_cntl_setup + - drm/nouveau/acpi: fix check for power resources support + - drm/fb-helper: Don't call dirty callback for untouched clips + - drm/fb-helper: Fix connector ref leak on error + - drm/fb-helper: Keep references for the current set of used connectors + - drm/i915/gen9: fix DDB partitioning for multi-screen cases + - drm/i915/gen9: fix watermarks when using the pipe scaler + - drm/dp/mst: Check peer device type before attempting EDID read + - drm: Release reference from blob lookup after replacing property + - drm/i915: Respect alternate_aux_channel for all DDI ports + - drm/i915: Clean up DDI DDC/AUX CH sanitation + - drm/i915/fbc: fix CFB size calculation for gen8+ + - drm: i915: Wait for fences on new fb, not old + - i2c: mark device nodes only in case of successful instantiation + - netfilter: xt_NFLOG: fix unexpected truncated packet + - [arm64, armhf] pwm: Unexport children before chip removal + - [arm64, armhf] usb: dwc3: Fix size used in dma_free_coherent() + - [arm64, armhf] usb: chipidea: host: fix NULL ptr dereference during + shutdown + - [armhf] usb: musb: Fix hardirq-safe hardirq-unsafe lock order error + - tty: vt, fix bogus division in csi_J + - [x86] kvm: Check memopp before dereference (CVE-2016-8630) + - btrfs: qgroup: Prevent qgroup->reserved from going subzero + - [x86] cpufreq: intel_pstate: Set P-state upfront in performance mode + - HID: usbhid: add ATEN CS962 to list of quirky devices + + [ Ben Hutchings ] + * debian/control: Fix build-dependency on openssl to work with new + versions that have M-A: allowed (Closes: #839145) + * [rt] Update to 4.8.6-rt5: + - [i386] entry: Fix preempt_lazy_count check in resume_kernel() + - sched: Use mmdrop_delayed() in sched_cpu_dying() + - Revert "mm/zsmalloc: Use get/put_cpu_light in + zs_map_object()/zs_unmap_object()" + - mm/zsmalloc: copy with get_cpu_var() and locking + - NFSv4: replace seqcount_t with a seqlock_t + - ftrace: Fix trace header alignment + - connector/cn_proc: Protect send_msg() with a local lock on RT + - drivers/zram: Don't disable preemption in zcomp_stream_get/put() + * HID: Enable HID_ALPS, HID_ASUS (Closes: #843085), HID_CMEDIA as modules + * cpupower: Fix checks for CPU existence (Closes: #843071) + * perf: Disable use of libcrypto (Closes: #843199) + * IB: Enable INFINIBAND_RDMAVT as module, re-enabling INFINIBAND_HFI1 + and INFINIBAND_QIB (Closes: #843792) + * libcpupower-dev: Depend on libcpupower1 (Closes: #840852) + * [arm64] Enable more drivers for X-Gene (Closes: #840061): + - ipmi: Enable IPMI_HANDLER, IPMI_DEVICE_INTERFACE, IPMI_SSIF as modules + - i2c: Enable I2C_XGENE_SLIMPRO as module + - mailbox: Enable XGENE_SLIMPRO_MBOX as module + * debian/control: Build-Depend on a recent debhelper instead of dh-systemd + + -- Ben Hutchings Sun, 13 Nov 2016 04:38:09 +0000 + linux (4.8.5-1) unstable; urgency=medium * New upstream stable update: diff --git a/debian/config/arm64/config b/debian/config/arm64/config index 4fdc7bb82..345330896 100644 --- a/debian/config/arm64/config +++ b/debian/config/arm64/config @@ -70,6 +70,13 @@ CONFIG_HW_RANDOM_BCM2835=m CONFIG_HW_RANDOM_HISI=m CONFIG_HW_RANDOM_MSM=m +## +## file: drivers/char/ipmi/Kconfig +## +CONFIG_IPMI_HANDLER=m +CONFIG_IPMI_DEVICE_INTERFACE=m +CONFIG_IPMI_SSIF=m + ## ## file: drivers/clk/Kconfig ## @@ -195,6 +202,7 @@ CONFIG_I2C_DESIGNWARE_PLATFORM=m CONFIG_I2C_QUP=m CONFIG_I2C_TEGRA=m CONFIG_I2C_CROS_EC_TUNNEL=m +CONFIG_I2C_XGENE_SLIMPRO=m ## ## file: drivers/iio/adc/Kconfig @@ -231,6 +239,7 @@ CONFIG_LEDS_GPIO=m CONFIG_MAILBOX=y CONFIG_BCM2835_MBOX=y CONFIG_HI6220_MBOX=y +CONFIG_XGENE_SLIMPRO_MBOX=m ## ## file: drivers/memory/tegra/Kconfig diff --git a/debian/config/config b/debian/config/config index f50f609e6..06baf957d 100644 --- a/debian/config/config +++ b/debian/config/config @@ -663,6 +663,7 @@ CONFIG_HID_A4TECH=y CONFIG_HID_ACRUX=m CONFIG_HID_ACRUX_FF=y CONFIG_HID_APPLE=y +CONFIG_HID_ASUS=m CONFIG_HID_AUREAL=m CONFIG_HID_BELKIN=y CONFIG_HID_BETOP_FF=m @@ -670,6 +671,7 @@ CONFIG_HID_CHERRY=y CONFIG_HID_CHICONY=y CONFIG_HID_CORSAIR=m CONFIG_HID_PRODIKEYS=m +CONFIG_HID_CMEDIA=m CONFIG_HID_CP2112=m CONFIG_HID_CYPRESS=y CONFIG_HID_DRAGONRISE=m @@ -743,6 +745,7 @@ CONFIG_HID_ZEROPLUS=m CONFIG_ZEROPLUS_FF=y CONFIG_HID_ZYDACRON=m CONFIG_HID_SENSOR_HUB=m +CONFIG_HID_ALPS=m ## ## file: drivers/hid/usbhid/Kconfig @@ -1197,6 +1200,11 @@ CONFIG_INFINIBAND_OCRDMA=m CONFIG_INFINIBAND_QIB=m CONFIG_INFINIBAND_QIB_DCA=y +## +## file: drivers/infiniband/sw/rdmavt/Kconfig +## +CONFIG_INFINIBAND_RDMAVT=m + ## ## file: drivers/infiniband/ulp/ipoib/Kconfig ## diff --git a/debian/patches/bugfix/all/cpupower-fix-checks-for-cpu-existence.patch b/debian/patches/bugfix/all/cpupower-fix-checks-for-cpu-existence.patch new file mode 100644 index 000000000..887ea5001 --- /dev/null +++ b/debian/patches/bugfix/all/cpupower-fix-checks-for-cpu-existence.patch @@ -0,0 +1,49 @@ +From: Ben Hutchings +Date: Thu, 03 Nov 2016 15:25:26 -0600 +Subject: cpupower: Fix checks for CPU existence +Bug: https://bugzilla.kernel.org/show_bug.cgi?id=135391 +Bug-Debian: https://bugs.debian.org/843071 + +Calls to cpufreq_cpu_exists(cpu) were converted to +cpupower_is_cpu_online(cpu) when libcpupower was introduced and the +former function was deleted. However, cpupower_is_cpu_online() +returns 1 on success whereas cpufreq_cpu_exists() returned 0 on +success. It also does not distinguish physically absent and offline +CPUs, and does not set errno. + +cpufreq-set has already been fixed (commit c25badc9ceb6). + +In cpufreq-bench, which prints an error message for offline CPUs, +properly distinguish and report the zero and negative cases. + +Reported-by: Jose +Reported-by: Julien RIVAUD +Cc: stable # 4.7+ +Fixes: ac5a181d065d ("cpupower: Add cpuidle parts into library") +Signed-off-by: Ben Hutchings +--- +--- a/tools/power/cpupower/bench/system.c ++++ b/tools/power/cpupower/bench/system.c +@@ -58,12 +58,19 @@ long long int get_time() + + int set_cpufreq_governor(char *governor, unsigned int cpu) + { ++ int rc; + + dprintf("set %s as cpufreq governor\n", governor); + +- if (cpupower_is_cpu_online(cpu) != 0) { +- perror("cpufreq_cpu_exists"); +- fprintf(stderr, "error: cpu %u does not exist\n", cpu); ++ rc = cpupower_is_cpu_online(cpu); ++ if (rc != 1) { ++ if (rc < 0) ++ fprintf(stderr, "cpupower_is_cpu_online: %s\n", ++ strerror(-rc)); ++ else ++ fprintf(stderr, ++ "error: cpu %u is offline or does not exist\n", ++ cpu); + return -1; + } + 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 b02ca8475..95061c214 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Probably happens on all ARM, with CONFIG_PREEMPT_RT_FULL 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 48f78f4dd..a176c1929 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 4f5983d34..afecb99ad 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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/KVM-lapic-mark-LAPIC-timer-handler-as-irqsafe.patch b/debian/patches/features/all/rt/KVM-lapic-mark-LAPIC-timer-handler-as-irqsafe.patch index cea2e5d89..e9c0433e5 100644 --- a/debian/patches/features/all/rt/KVM-lapic-mark-LAPIC-timer-handler-as-irqsafe.patch +++ b/debian/patches/features/all/rt/KVM-lapic-mark-LAPIC-timer-handler-as-irqsafe.patch @@ -1,7 +1,7 @@ From: Marcelo Tosatti Date: Wed, 8 Apr 2015 20:33:25 -0300 Subject: KVM: lapic: mark LAPIC timer handler as irqsafe -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Since lapic timer handler only wakes up a simple waitqueue, it can be executed from hardirq context. 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 new file mode 100644 index 000000000..68099e297 --- /dev/null +++ b/debian/patches/features/all/rt/NFSv4-replace-seqcount_t-with-a-seqlock_t.patch @@ -0,0 +1,128 @@ +Date: Fri, 28 Oct 2016 23:05:11 +0200 +From: Sebastian Andrzej Siewior +To: Trond Myklebust +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/4.8/older/patches-4.8.6-rt5.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 +point. So I took a look at the code. +It the lockdep part was removed in commit abbec2da13f0 ("NFS: Use +raw_write_seqcount_begin/end int nfs4_reclaim_open_state") because +lockdep complained. The whole seqcount thing was introduced in commit +c137afabe330 ("NFSv4: Allow the state manager to mark an open_owner as +being recovered"). +The recovery threads runs only once. +write_seqlock() does not work on !RT because it disables preemption and it the +writer side is preemptible (has to remain so despite the fact that it will +block readers). + +Reported-by: kernel test robot +Signed-off-by: Sebastian Andrzej Siewior +--- + fs/nfs/delegation.c | 4 ++-- + fs/nfs/nfs4_fs.h | 2 +- + fs/nfs/nfs4proc.c | 4 ++-- + fs/nfs/nfs4state.c | 22 ++++++++++++++++------ + 4 files changed, 21 insertions(+), 11 deletions(-) + +--- a/fs/nfs/delegation.c ++++ b/fs/nfs/delegation.c +@@ -150,11 +150,11 @@ static int nfs_delegation_claim_opens(st + sp = state->owner; + /* Block nfs4_proc_unlck */ + mutex_lock(&sp->so_delegreturn_mutex); +- seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); ++ seq = read_seqbegin(&sp->so_reclaim_seqlock); + err = nfs4_open_delegation_recall(ctx, state, stateid, type); + if (!err) + err = nfs_delegation_claim_locks(ctx, state, stateid); +- if (!err && read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) ++ if (!err && read_seqretry(&sp->so_reclaim_seqlock, seq)) + err = -EAGAIN; + mutex_unlock(&sp->so_delegreturn_mutex); + put_nfs_open_context(ctx); +--- a/fs/nfs/nfs4_fs.h ++++ b/fs/nfs/nfs4_fs.h +@@ -107,7 +107,7 @@ struct nfs4_state_owner { + unsigned long so_flags; + struct list_head so_states; + struct nfs_seqid_counter so_seqid; +- seqcount_t so_reclaim_seqcount; ++ seqlock_t so_reclaim_seqlock; + struct mutex so_delegreturn_mutex; + }; + +--- a/fs/nfs/nfs4proc.c ++++ b/fs/nfs/nfs4proc.c +@@ -2525,7 +2525,7 @@ static int _nfs4_open_and_get_state(stru + unsigned int seq; + int ret; + +- seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); ++ seq = raw_seqcount_begin(&sp->so_reclaim_seqlock.seqcount); + + ret = _nfs4_proc_open(opendata); + if (ret != 0) +@@ -2561,7 +2561,7 @@ static int _nfs4_open_and_get_state(stru + ctx->state = state; + if (d_inode(dentry) == state->inode) { + nfs_inode_attach_open_context(ctx); +- if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) ++ if (read_seqretry(&sp->so_reclaim_seqlock, seq)) + nfs4_schedule_stateid_recovery(server, state); + } + out: +--- a/fs/nfs/nfs4state.c ++++ b/fs/nfs/nfs4state.c +@@ -488,7 +488,7 @@ nfs4_alloc_state_owner(struct nfs_server + nfs4_init_seqid_counter(&sp->so_seqid); + atomic_set(&sp->so_count, 1); + INIT_LIST_HEAD(&sp->so_lru); +- seqcount_init(&sp->so_reclaim_seqcount); ++ seqlock_init(&sp->so_reclaim_seqlock); + mutex_init(&sp->so_delegreturn_mutex); + return sp; + } +@@ -1459,8 +1459,12 @@ static int nfs4_reclaim_open_state(struc + * recovering after a network partition or a reboot from a + * server that doesn't support a grace period. + */ ++#ifdef CONFIG_PREEMPT_RT_FULL ++ write_seqlock(&sp->so_reclaim_seqlock); ++#else ++ write_seqcount_begin(&sp->so_reclaim_seqlock.seqcount); ++#endif + spin_lock(&sp->so_lock); +- raw_write_seqcount_begin(&sp->so_reclaim_seqcount); + restart: + list_for_each_entry(state, &sp->so_states, open_states) { + if (!test_and_clear_bit(ops->state_flag_bit, &state->flags)) +@@ -1528,14 +1532,20 @@ static int nfs4_reclaim_open_state(struc + spin_lock(&sp->so_lock); + goto restart; + } +- raw_write_seqcount_end(&sp->so_reclaim_seqcount); + spin_unlock(&sp->so_lock); ++#ifdef CONFIG_PREEMPT_RT_FULL ++ write_sequnlock(&sp->so_reclaim_seqlock); ++#else ++ write_seqcount_end(&sp->so_reclaim_seqlock.seqcount); ++#endif + return 0; + out_err: + nfs4_put_open_state(state); +- spin_lock(&sp->so_lock); +- raw_write_seqcount_end(&sp->so_reclaim_seqcount); +- spin_unlock(&sp->so_lock); ++#ifdef CONFIG_PREEMPT_RT_FULL ++ write_sequnlock(&sp->so_reclaim_seqlock); ++#else ++ write_seqcount_end(&sp->so_reclaim_seqlock.seqcount); ++#endif + return status; + } + 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 c72e09ae8..147d6b0a3 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz We hit the following bug with 3.6-rt: 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 135d2d5b2..3f4c6c625 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 22534e4a9..59ecf1803 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 29e1ce2e0..e9be564fb 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 deb5898c5..8794d864c 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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-enable-highmem-for-rt.patch b/debian/patches/features/all/rt/arm-enable-highmem-for-rt.patch index 3e26cf1bf..5e6e9b78c 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 399015815..75fc84288 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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-preempt-lazy-support.patch b/debian/patches/features/all/rt/arm-preempt-lazy-support.patch index c7b21f5da..7b6f115ce 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 51c95d7fa..323db877f 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 1b4f85826..bfacbe9f0 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 28a5b98b2..b81be3da7 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 cbe41f785..419eef8c6 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Use the local_irq_*_nort variants. diff --git a/debian/patches/features/all/rt/blk-mq-revert-raw-locks-post-pone-notifier-to-POST_D.patchto-POST_D.patch b/debian/patches/features/all/rt/blk-mq-revert-raw-locks-post-pone-notifier-to-POST_D.patchto-POST_D.patch index e2e3b67f2..6eaac4ecf 100644 --- a/debian/patches/features/all/rt/blk-mq-revert-raw-locks-post-pone-notifier-to-POST_D.patchto-POST_D.patch +++ b/debian/patches/features/all/rt/blk-mq-revert-raw-locks-post-pone-notifier-to-POST_D.patchto-POST_D.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Sat, 3 May 2014 11:00:29 +0200 Subject: blk-mq: revert raw locks, post pone notifier to POST_DEAD -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz The blk_mq_cpu_notify_lock should be raw because some CPU down levels are called with interrupts off. The notifier itself calls currently one 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 70f1d60fb..f5be797a7 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 65caebcea..aee883ec0 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 21fe99a32..b0c9ca0bd 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 f76009181..06373ecca 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 05f7fa3df..d2f840707 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 4f429c071..0c7e6f9e1 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 c06ccf418..2f8d1f66c 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 d0be74e6a..1f6d55bf7 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 10c9d55b7..be9713612 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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/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 d3e8ecb1b..ffd95779a 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 b6aa84650..f54741cbb 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 5153fc16b..548c2e655 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 8b65ca170..810e34c11 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 58131e704..6fd74145d 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 new file mode 100644 index 000000000..304c869ee --- /dev/null +++ b/debian/patches/features/all/rt/connector-cn_proc-Protect-send_msg-with-a-local-lock.patch @@ -0,0 +1,68 @@ +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/4.8/older/patches-4.8.6-rt5.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 +|Preemption disabled at:[] proc_exit_connector+0xbb/0x140 +| +|CPU: 4 PID: 31807 Comm: sleep Tainted: G W E 4.8.0-rt11-rt #106 +|Call Trace: +| [] dump_stack+0x65/0x88 +| [] ___might_sleep+0xf5/0x180 +| [] __rt_spin_lock+0x20/0x50 +| [] rt_read_lock+0x28/0x30 +| [] netlink_broadcast_filtered+0x49/0x3f0 +| [] ? __kmalloc_reserve.isra.33+0x31/0x90 +| [] netlink_broadcast+0x1d/0x20 +| [] cn_netlink_send_mult+0x19a/0x1f0 +| [] cn_netlink_send+0x1b/0x20 +| [] proc_exit_connector+0xf8/0x140 +| [] do_exit+0x5d1/0xba0 +| [] do_group_exit+0x4c/0xc0 +| [] SyS_exit_group+0x14/0x20 +| [] entry_SYSCALL_64_fastpath+0x1a/0xa4 + +Since ab8ed951080e ("connector: fix out-of-order cn_proc netlink message +delivery") which is v4.7-rc6. + +Signed-off-by: Mike Galbraith +Signed-off-by: Sebastian Andrzej Siewior +--- + drivers/connector/cn_proc.c | 6 ++++-- + 1 file changed, 4 insertions(+), 2 deletions(-) + +--- a/drivers/connector/cn_proc.c ++++ b/drivers/connector/cn_proc.c +@@ -32,6 +32,7 @@ + #include + + #include ++#include + + /* + * Size of a cn_msg followed by a proc_event structure. Since the +@@ -54,10 +55,11 @@ static struct cb_id cn_proc_event_id = { + + /* proc_event_counts is used as the sequence number of the netlink message */ + static DEFINE_PER_CPU(__u32, proc_event_counts) = { 0 }; ++static DEFINE_LOCAL_IRQ_LOCK(send_msg_lock); + + static inline void send_msg(struct cn_msg *msg) + { +- preempt_disable(); ++ local_lock(send_msg_lock); + + msg->seq = __this_cpu_inc_return(proc_event_counts) - 1; + ((struct proc_event *)msg->data)->cpu = smp_processor_id(); +@@ -70,7 +72,7 @@ static inline void send_msg(struct cn_ms + */ + cn_netlink_send(msg, 0, CN_IDX_PROC, GFP_NOWAIT); + +- preempt_enable(); ++ local_unlock(send_msg_lock); + } + + void proc_fork_connector(struct task_struct *task) diff --git a/debian/patches/features/all/rt/cpu-hotplug-Document-why-PREEMPT_RT-uses-a-spinlock.patch b/debian/patches/features/all/rt/cpu-hotplug-Document-why-PREEMPT_RT-uses-a-spinlock.patch index 533a51ab3..ad2744bca 100644 --- a/debian/patches/features/all/rt/cpu-hotplug-Document-why-PREEMPT_RT-uses-a-spinlock.patch +++ b/debian/patches/features/all/rt/cpu-hotplug-Document-why-PREEMPT_RT-uses-a-spinlock.patch @@ -1,7 +1,7 @@ From: Steven Rostedt Date: Thu, 5 Dec 2013 09:16:52 -0500 Subject: cpu hotplug: Document why PREEMPT_RT uses a spinlock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz The patch: diff --git a/debian/patches/features/all/rt/cpu-rt-make-hotplug-lock-a-sleeping-spinlock-on-rt.patch b/debian/patches/features/all/rt/cpu-rt-make-hotplug-lock-a-sleeping-spinlock-on-rt.patch index c6eee6307..faf8d7071 100644 --- a/debian/patches/features/all/rt/cpu-rt-make-hotplug-lock-a-sleeping-spinlock-on-rt.patch +++ b/debian/patches/features/all/rt/cpu-rt-make-hotplug-lock-a-sleeping-spinlock-on-rt.patch @@ -1,7 +1,7 @@ Subject: cpu: Make hotplug.lock a "sleeping" spinlock on RT From: Steven Rostedt Date: Fri, 02 Mar 2012 10:36:57 -0500 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Tasks can block on hotplug.lock in pin_current_cpu(), but their state might be != RUNNING. So the mutex wakeup will set the state diff --git a/debian/patches/features/all/rt/cpu-rt-rework-cpu-down.patch b/debian/patches/features/all/rt/cpu-rt-rework-cpu-down.patch index 9c005a058..b16782bbd 100644 --- a/debian/patches/features/all/rt/cpu-rt-rework-cpu-down.patch +++ b/debian/patches/features/all/rt/cpu-rt-rework-cpu-down.patch @@ -1,7 +1,7 @@ From: Steven Rostedt Date: Mon, 16 Jul 2012 08:07:43 +0000 Subject: cpu/rt: Rework cpu down for PREEMPT_RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Bringing a CPU down is a pain with the PREEMPT_RT kernel because tasks can be preempted in many more places than in non-RT. In 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 077c9f7d9..c70ef41f2 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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/cpu_down_move_migrate_enable_back.patch b/debian/patches/features/all/rt/cpu_down_move_migrate_enable_back.patch index 22ff1eedd..f619b0afb 100644 --- a/debian/patches/features/all/rt/cpu_down_move_migrate_enable_back.patch +++ b/debian/patches/features/all/rt/cpu_down_move_migrate_enable_back.patch @@ -1,7 +1,7 @@ From: Tiejun Chen Subject: cpu_down: move migrate_enable() back Date: Thu, 7 Nov 2013 10:06:07 +0800 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Commit 08c1ab68, "hotplug-use-migrate-disable.patch", intends to use migrate_enable()/migrate_disable() to replace that combination 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 b37afcd09..dfbf08702 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 e3757d557..982eb737a 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 @@ -1,10 +1,43 @@ 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz -We can't deal with the cpumask allocations which happen in atomic -context (see arch/x86/kernel/apic/io_apic.c) on RT right now. +There are "valid" GFP_ATOMIC allocations such as + +|BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:931 +|in_atomic(): 1, irqs_disabled(): 0, pid: 2130, name: tar +|1 lock held by tar/2130: +| #0: (&mm->mmap_sem){++++++}, at: [] SyS_brk+0x39/0x190 +|Preemption disabled at:[] flush_tlb_mm_range+0x28/0x350 +| +|CPU: 1 PID: 2130 Comm: tar Tainted: G W 4.8.2-rt2+ #747 +|Call Trace: +| [] dump_stack+0x86/0xca +| [] ___might_sleep+0x14b/0x240 +| [] rt_spin_lock+0x24/0x60 +| [] get_page_from_freelist+0x83a/0x11b0 +| [] __alloc_pages_nodemask+0x15b/0x1190 +| [] alloc_pages_current+0xa1/0x1f0 +| [] new_slab+0x3e5/0x690 +| [] ___slab_alloc+0x495/0x660 +| [] __slab_alloc.isra.79+0x71/0xc0 +| [] __kmalloc_node+0xe7/0x240 +| [] alloc_cpumask_var_node+0x20/0x50 +| [] alloc_cpumask_var+0xe/0x10 +| [] native_send_call_func_ipi+0x21/0x130 +| [] smp_call_function_many+0x22f/0x370 +| [] native_flush_tlb_others+0x1a4/0x3a0 +| [] flush_tlb_mm_range+0x7b/0x350 +| [] tlb_flush_mmu_tlbonly+0x62/0xd0 +| [] tlb_finish_mmu+0x14/0x50 +| [] unmap_region+0xe4/0x110 +| [] do_munmap+0x293/0x470 +| [] SyS_brk+0x13c/0x190 +| [] do_fast_syscall_32+0xb2/0x2f0 +| [] entry_SYSENTER_compat+0x51/0x60 + +which forbid allocations at run-time. Signed-off-by: Thomas Gleixner --- 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 b8a1db656..190e92ab8 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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/debugobjects-rt.patch b/debian/patches/features/all/rt/debugobjects-rt.patch index 373c8209c..e96380420 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Avoid filling the pool / allocating memory with irqs off(). 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 f44ab3543..ed3ee8f1e 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 @@ -16,7 +16,7 @@ Signed-off-by: Thomas Gleixner --- a/drivers/md/dm-rq.c +++ b/drivers/md/dm-rq.c -@@ -802,7 +802,7 @@ static void dm_old_request_fn(struct req +@@ -811,7 +811,7 @@ static void dm_old_request_fn(struct req /* Establish tio->ti before queuing work (map_tio_request) */ tio->ti = ti; queue_kthread_work(&md->kworker, &tio->work); 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 16e2c0c0f..9ee9d7b1a 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 bc08a84da..457c2c9ad 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 0e3a1c595..4377a9472 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 b0adb305c..61599694f 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 58ca9b25e..899ee2e61 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 d45a1571b..39a05239e 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 new file mode 100644 index 000000000..ee0c261c9 --- /dev/null +++ b/debian/patches/features/all/rt/drivers-zram-Don-t-disable-preemption-in-zcomp_strea.patch @@ -0,0 +1,92 @@ +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/4.8/older/patches-4.8.6-rt5.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 +also have to fix an lock order issue in zram_decompress_page() such +that zs_map_object() nests inside of zcomp_stream_put() as it does in +zram_bvec_write(). + +Signed-off-by: Mike Galbraith +[bigeasy: get_locked_var() -> per zcomp_strm lock] +Signed-off-by: Sebastian Andrzej Siewior +--- + drivers/block/zram/zcomp.c | 12 ++++++++++-- + drivers/block/zram/zcomp.h | 1 + + drivers/block/zram/zram_drv.c | 6 +++--- + 3 files changed, 14 insertions(+), 5 deletions(-) + +--- a/drivers/block/zram/zcomp.c ++++ b/drivers/block/zram/zcomp.c +@@ -118,12 +118,19 @@ ssize_t zcomp_available_show(const char + + struct zcomp_strm *zcomp_stream_get(struct zcomp *comp) + { +- return *get_cpu_ptr(comp->stream); ++ struct zcomp_strm *zstrm; ++ ++ zstrm = *this_cpu_ptr(comp->stream); ++ spin_lock(&zstrm->zcomp_lock); ++ return zstrm; + } + + void zcomp_stream_put(struct zcomp *comp) + { +- put_cpu_ptr(comp->stream); ++ struct zcomp_strm *zstrm; ++ ++ zstrm = *this_cpu_ptr(comp->stream); ++ spin_unlock(&zstrm->zcomp_lock); + } + + int zcomp_compress(struct zcomp_strm *zstrm, +@@ -174,6 +181,7 @@ static int __zcomp_cpu_notifier(struct z + pr_err("Can't allocate a compression stream\n"); + return NOTIFY_BAD; + } ++ spin_lock_init(&zstrm->zcomp_lock); + *per_cpu_ptr(comp->stream, cpu) = zstrm; + break; + case CPU_DEAD: +--- a/drivers/block/zram/zcomp.h ++++ b/drivers/block/zram/zcomp.h +@@ -14,6 +14,7 @@ struct zcomp_strm { + /* compression/decompression buffer */ + void *buffer; + struct crypto_comp *tfm; ++ spinlock_t zcomp_lock; + }; + + /* dynamic per-device compression frontend */ +--- a/drivers/block/zram/zram_drv.c ++++ b/drivers/block/zram/zram_drv.c +@@ -568,6 +568,7 @@ static int zram_decompress_page(struct z + struct zram_meta *meta = zram->meta; + unsigned long handle; + unsigned int size; ++ struct zcomp_strm *zstrm; + + zram_lock_table(&meta->table[index]); + handle = meta->table[index].handle; +@@ -579,16 +580,15 @@ static int zram_decompress_page(struct z + return 0; + } + ++ zstrm = zcomp_stream_get(zram->comp); + cmem = zs_map_object(meta->mem_pool, handle, ZS_MM_RO); + if (size == PAGE_SIZE) { + copy_page(mem, cmem); + } else { +- struct zcomp_strm *zstrm = zcomp_stream_get(zram->comp); +- + ret = zcomp_decompress(zstrm, cmem, size, mem); +- zcomp_stream_put(zram->comp); + } + zs_unmap_object(meta->mem_pool, handle); ++ zcomp_stream_put(zram->comp); + zram_unlock_table(&meta->table[index]); + + /* Should NEVER happen. Return bio error if it does. */ diff --git a/debian/patches/features/all/rt/drm-i915-drop-trace_i915_gem_ring_dispatch-onrt.patch b/debian/patches/features/all/rt/drm-i915-drop-trace_i915_gem_ring_dispatch-onrt.patch index 138d7d6da..bde2cb549 100644 --- a/debian/patches/features/all/rt/drm-i915-drop-trace_i915_gem_ring_dispatch-onrt.patch +++ b/debian/patches/features/all/rt/drm-i915-drop-trace_i915_gem_ring_dispatch-onrt.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 25 Apr 2013 18:12:52 +0200 Subject: drm/i915: drop trace_i915_gem_ring_dispatch on rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz This tracepoint is responsible for: 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 c2cb069fd..2f932e74c 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 8fbe6d4fa..e9011ee75 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz DRM folks identified the spots, so use them. diff --git a/debian/patches/features/all/rt/dump-stack-don-t-disable-preemption-during-trace.patch b/debian/patches/features/all/rt/dump-stack-don-t-disable-preemption-during-trace.patch index 3a195f3d4..8823ffcd4 100644 --- a/debian/patches/features/all/rt/dump-stack-don-t-disable-preemption-during-trace.patch +++ b/debian/patches/features/all/rt/dump-stack-don-t-disable-preemption-during-trace.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Sun, 16 Aug 2015 14:27:50 +0200 Subject: dump stack: don't disable preemption during trace -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz I see here large latencies during a stack dump on x86. The preempt_disable() and get_cpu() should forbid moving the task to another 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 468535b7c..d7069c76b 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 05cd989e5..c7b5e4e19 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 f976641a7..48f7505d8 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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-include-wait.h.patch b/debian/patches/features/all/rt/fs-dcache-include-wait.h.patch index ba62b9b8a..d020bc5bd 100644 --- a/debian/patches/features/all/rt/fs-dcache-include-wait.h.patch +++ b/debian/patches/features/all/rt/fs-dcache-include-wait.h.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 14 Sep 2016 11:55:23 +0200 Subject: fs/dcache: include wait.h -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Since commit d9171b934526 ("parallel lookups machinery, part 4 (and last)") dcache.h is using but does not include wait.h. It works as long diff --git a/debian/patches/features/all/rt/fs-dcache-init-in_lookup_hashtable.patch b/debian/patches/features/all/rt/fs-dcache-init-in_lookup_hashtable.patch index f1d66865e..c6a63b5b4 100644 --- a/debian/patches/features/all/rt/fs-dcache-init-in_lookup_hashtable.patch +++ b/debian/patches/features/all/rt/fs-dcache-init-in_lookup_hashtable.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 14 Sep 2016 17:57:03 +0200 Subject: [PATCH] fs/dcache: init in_lookup_hashtable -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz in_lookup_hashtable was introduced in commit 94bdd655caba ("parallel lookups machinery, part 3") and never initialized but since it is in 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 8a1ac421d..3e3f2252f 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 ed817e386..fd940496b 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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. @@ -121,7 +121,7 @@ Signed-off-by: Sebastian Andrzej Siewior struct dentry *dentry; struct dentry *alias; struct inode *dir = d_inode(parent); -@@ -1484,7 +1484,7 @@ int nfs_atomic_open(struct inode *dir, s +@@ -1490,7 +1490,7 @@ int nfs_atomic_open(struct inode *dir, s struct file *file, unsigned open_flags, umode_t mode, int *opened) { 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 705598e14..57ff45be4 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 6205f36c2..c18270ae4 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 29f298307..24e798494 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 80639cbcb..f9160150a 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 @@ -22,7 +22,7 @@ Signed-off-by: Sebastian Andrzej Siewior --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c -@@ -1799,7 +1799,11 @@ int nfs_rmdir(struct inode *dir, struct +@@ -1805,7 +1805,11 @@ int nfs_rmdir(struct inode *dir, struct trace_nfs_rmdir_enter(dir, dentry); if (d_really_is_positive(dentry)) { @@ -34,7 +34,7 @@ Signed-off-by: Sebastian Andrzej Siewior error = NFS_PROTO(dir)->rmdir(dir, &dentry->d_name); /* Ensure the VFS deletes this inode */ switch (error) { -@@ -1809,7 +1813,11 @@ int nfs_rmdir(struct inode *dir, struct +@@ -1815,7 +1819,11 @@ int nfs_rmdir(struct inode *dir, struct case -ENOENT: nfs_dentry_handle_enoent(dentry); } 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 a6f375fe1..d34b040c1 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 f0ed8ea0e..5d8485f1b 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 new file mode 100644 index 000000000..3fb37d03f --- /dev/null +++ b/debian/patches/features/all/rt/ftrace-Fix-trace-header-alignment.patch @@ -0,0 +1,63 @@ +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/4.8/older/patches-4.8.6-rt5.tar.xz + +Line up helper arrows to the right column. + +Cc: stable-rt@vger.kernel.org +Signed-off-by: Mike Galbraith +[bigeasy: fixup function tracer header] +Signed-off-by: Sebastian Andrzej Siewior +--- + kernel/trace/trace.c | 32 ++++++++++++++++---------------- + 1 file changed, 16 insertions(+), 16 deletions(-) + +--- a/kernel/trace/trace.c ++++ b/kernel/trace/trace.c +@@ -2896,17 +2896,17 @@ get_total_entries(struct trace_buffer *b + + static void print_lat_help_header(struct seq_file *m) + { +- seq_puts(m, "# _--------=> CPU# \n" +- "# / _-------=> irqs-off \n" +- "# | / _------=> need-resched \n" +- "# || / _-----=> need-resched_lazy \n" +- "# ||| / _----=> hardirq/softirq \n" +- "# |||| / _---=> preempt-depth \n" +- "# ||||| / _--=> preempt-lazy-depth\n" +- "# |||||| / _-=> migrate-disable \n" +- "# ||||||| / delay \n" +- "# cmd pid |||||||| time | caller \n" +- "# \\ / |||||||| \\ | / \n"); ++ seq_puts(m, "# _--------=> CPU# \n" ++ "# / _-------=> irqs-off \n" ++ "# | / _------=> need-resched \n" ++ "# || / _-----=> need-resched_lazy \n" ++ "# ||| / _----=> hardirq/softirq \n" ++ "# |||| / _---=> preempt-depth \n" ++ "# ||||| / _--=> preempt-lazy-depth\n" ++ "# |||||| / _-=> migrate-disable \n" ++ "# ||||||| / delay \n" ++ "# cmd pid |||||||| time | caller \n" ++ "# \\ / |||||||| \\ | / \n"); + } + + static void print_event_info(struct trace_buffer *buf, struct seq_file *m) +@@ -2935,11 +2935,11 @@ static void print_func_help_header_irq(s + "# |/ _-----=> need-resched_lazy\n" + "# || / _---=> hardirq/softirq\n" + "# ||| / _--=> preempt-depth\n" +- "# |||| /_--=> preempt-lazy-depth\n" +- "# ||||| _-=> migrate-disable \n" +- "# ||||| / delay\n" +- "# TASK-PID CPU# |||||| TIMESTAMP FUNCTION\n" +- "# | | | |||||| | |\n"); ++ "# |||| / _-=> preempt-lazy-depth\n" ++ "# ||||| / _-=> migrate-disable \n" ++ "# |||||| / delay\n" ++ "# TASK-PID CPU# ||||||| TIMESTAMP FUNCTION\n" ++ "# | | | ||||||| | |\n"); + } + + void 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 4109e7fd4..a40eff478 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 9dfc0f827..9baf526a0 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 fd9df4891..95568894f 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Requeue with timeout causes a bug with PREEMPT_RT_FULL. 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 33047d49d..71523ca35 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 d43729f54..d856ef669 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Joe Korty reported, that __irq_set_affinity_locked() schedules a workqueue while holding a rawlock which results in a might_sleep() @@ -11,9 +11,9 @@ This patch uses swork_queue() instead. Signed-off-by: Sebastian Andrzej Siewior --- drivers/scsi/qla2xxx/qla_isr.c | 4 +++ - include/linux/interrupt.h | 5 ++++ + include/linux/interrupt.h | 6 +++++ kernel/irq/manage.c | 43 ++++++++++++++++++++++++++++++++++++++--- - 3 files changed, 49 insertions(+), 3 deletions(-) + 3 files changed, 50 insertions(+), 3 deletions(-) --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -39,7 +39,15 @@ Signed-off-by: Sebastian Andrzej Siewior #include #include -@@ -229,7 +230,11 @@ extern void resume_device_irqs(void); +@@ -218,6 +219,7 @@ extern void resume_device_irqs(void); + * struct irq_affinity_notify - context for notification of IRQ affinity changes + * @irq: Interrupt to which notification applies + * @kref: Reference count, for internal use ++ * @swork: Swork item, for internal use + * @work: Work item, for internal use + * @notify: Function to be called on change. This will be + * called in process context. +@@ -229,7 +231,11 @@ extern void resume_device_irqs(void); struct irq_affinity_notify { unsigned int irq; struct kref kref; diff --git a/debian/patches/features/all/rt/genirq-force-threading.patch b/debian/patches/features/all/rt/genirq-force-threading.patch index 179296ace..9edb8ecee 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 6f47e3368..a110d850e 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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/gpu_don_t_check_for_the_lock_owner.patch b/debian/patches/features/all/rt/gpu_don_t_check_for_the_lock_owner.patch index 27bf2c211..477d1af98 100644 --- a/debian/patches/features/all/rt/gpu_don_t_check_for_the_lock_owner.patch +++ b/debian/patches/features/all/rt/gpu_don_t_check_for_the_lock_owner.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Tue, 14 Jul 2015 14:26:34 +0200 Subject: gpu: don't check for the lock owner. -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Signed-off-by: Sebastian Andrzej Siewior --- diff --git a/debian/patches/features/all/rt/hotplug-Use-set_cpus_allowed_ptr-in-sync_unplug_thre.patch b/debian/patches/features/all/rt/hotplug-Use-set_cpus_allowed_ptr-in-sync_unplug_thre.patch index a0eea4bd3..c5c9fa713 100644 --- a/debian/patches/features/all/rt/hotplug-Use-set_cpus_allowed_ptr-in-sync_unplug_thre.patch +++ b/debian/patches/features/all/rt/hotplug-Use-set_cpus_allowed_ptr-in-sync_unplug_thre.patch @@ -1,7 +1,7 @@ From: Mike Galbraith Date: Tue, 24 Mar 2015 08:14:49 +0100 Subject: hotplug: Use set_cpus_allowed_ptr() in sync_unplug_thread() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz do_set_cpus_allowed() is not safe vs ->sched_class change. 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 f237e165d..b1c978742 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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/hotplug-sync_unplug-no-27-5cn-27-in-task-name.patch b/debian/patches/features/all/rt/hotplug-sync_unplug-no-27-5cn-27-in-task-name.patch index d5ee4aef6..6d704f649 100644 --- a/debian/patches/features/all/rt/hotplug-sync_unplug-no-27-5cn-27-in-task-name.patch +++ b/debian/patches/features/all/rt/hotplug-sync_unplug-no-27-5cn-27-in-task-name.patch @@ -1,7 +1,7 @@ Subject: hotplug: sync_unplug: No "\n" in task name From: Yong Zhang Date: Sun, 16 Oct 2011 18:56:43 +0800 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Otherwise the output will look a little odd. diff --git a/debian/patches/features/all/rt/hotplug-use-migrate-disable.patch b/debian/patches/features/all/rt/hotplug-use-migrate-disable.patch index 79b61b210..001c546d7 100644 --- a/debian/patches/features/all/rt/hotplug-use-migrate-disable.patch +++ b/debian/patches/features/all/rt/hotplug-use-migrate-disable.patch @@ -1,7 +1,7 @@ Subject: hotplug: Use migrate disable on unplug From: Thomas Gleixner Date: Sun, 17 Jul 2011 19:35:29 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Migration needs to be disabled accross the unplug handling to make sure that the unplug thread is off the unplugged cpu. 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 11d3f0ba1..b6292c2f4 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz When run ltp leapsec_timer test, the following call trace is caught: diff --git a/debian/patches/features/all/rt/hrtimer-enfore-64byte-alignment.patch b/debian/patches/features/all/rt/hrtimer-enfore-64byte-alignment.patch index 6666b5edd..c24808c9a 100644 --- a/debian/patches/features/all/rt/hrtimer-enfore-64byte-alignment.patch +++ b/debian/patches/features/all/rt/hrtimer-enfore-64byte-alignment.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 23 Dec 2015 20:57:41 +0100 Subject: hrtimer: enfore 64byte alignment -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz The patch "hrtimer: Fixup hrtimer callback changes for preempt-rt" adds a list_head expired to struct hrtimer_clock_base and with it we run into diff --git a/debian/patches/features/all/rt/hrtimer-fixup-hrtimer-callback-changes-for-preempt-r.patch b/debian/patches/features/all/rt/hrtimer-fixup-hrtimer-callback-changes-for-preempt-r.patch index 9947b70ca..58eda3d7d 100644 --- a/debian/patches/features/all/rt/hrtimer-fixup-hrtimer-callback-changes-for-preempt-r.patch +++ b/debian/patches/features/all/rt/hrtimer-fixup-hrtimer-callback-changes-for-preempt-r.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Fri, 3 Jul 2009 08:44:31 -0500 Subject: hrtimer: Fixup hrtimer callback changes for preempt-rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz In preempt-rt we can not call the callbacks which take sleeping locks from the timer interrupt context. 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 a8a2adafc..4c669d4b7 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Make cancellation of a running callback in softirq context safe against preemption. diff --git a/debian/patches/features/all/rt/hwlat-detector-Don-t-ignore-threshold-module-paramet.patch b/debian/patches/features/all/rt/hwlat-detector-Don-t-ignore-threshold-module-paramet.patch index 00bc9df18..095ac0709 100644 --- a/debian/patches/features/all/rt/hwlat-detector-Don-t-ignore-threshold-module-paramet.patch +++ b/debian/patches/features/all/rt/hwlat-detector-Don-t-ignore-threshold-module-paramet.patch @@ -1,7 +1,7 @@ From: Mike Galbraith Date: Fri, 30 Aug 2013 07:57:25 +0200 Subject: hwlat-detector: Don't ignore threshold module parameter -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz If the user specified a threshold at module load time, use it. diff --git a/debian/patches/features/all/rt/hwlat-detector-Update-hwlat_detector-to-add-outer-lo.patch b/debian/patches/features/all/rt/hwlat-detector-Update-hwlat_detector-to-add-outer-lo.patch index 9a178932b..7de13555a 100644 --- a/debian/patches/features/all/rt/hwlat-detector-Update-hwlat_detector-to-add-outer-lo.patch +++ b/debian/patches/features/all/rt/hwlat-detector-Update-hwlat_detector-to-add-outer-lo.patch @@ -1,7 +1,7 @@ From: Steven Rostedt Date: Mon, 19 Aug 2013 17:33:25 -0400 Subject: hwlat-detector: Update hwlat_detector to add outer loop detection -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz The hwlat_detector reads two timestamps in a row, then reports any gap between those calls. The problem is, it misses everything between diff --git a/debian/patches/features/all/rt/hwlat-detector-Use-thread-instead-of-stop-machine.patch b/debian/patches/features/all/rt/hwlat-detector-Use-thread-instead-of-stop-machine.patch index d9efbf9cf..3fdcf28c5 100644 --- a/debian/patches/features/all/rt/hwlat-detector-Use-thread-instead-of-stop-machine.patch +++ b/debian/patches/features/all/rt/hwlat-detector-Use-thread-instead-of-stop-machine.patch @@ -1,7 +1,7 @@ From: Steven Rostedt Date: Mon, 19 Aug 2013 17:33:27 -0400 Subject: hwlat-detector: Use thread instead of stop machine -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz There's no reason to use stop machine to search for hardware latency. Simply disabling interrupts while running the loop will do enough to diff --git a/debian/patches/features/all/rt/hwlat-detector-Use-trace_clock_local-if-available.patch b/debian/patches/features/all/rt/hwlat-detector-Use-trace_clock_local-if-available.patch index af7b79b31..ad5000f85 100644 --- a/debian/patches/features/all/rt/hwlat-detector-Use-trace_clock_local-if-available.patch +++ b/debian/patches/features/all/rt/hwlat-detector-Use-trace_clock_local-if-available.patch @@ -1,7 +1,7 @@ From: Steven Rostedt Date: Mon, 19 Aug 2013 17:33:26 -0400 Subject: hwlat-detector: Use trace_clock_local if available -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz As ktime_get() calls into the timing code which does a read_seq(), it may be affected by other CPUS that touch that lock. To remove this diff --git a/debian/patches/features/all/rt/hwlatdetect.patch b/debian/patches/features/all/rt/hwlatdetect.patch index aecbb3730..d65d34374 100644 --- a/debian/patches/features/all/rt/hwlatdetect.patch +++ b/debian/patches/features/all/rt/hwlatdetect.patch @@ -1,7 +1,7 @@ Subject: hwlatdetect.patch From: Carsten Emde Date: Tue, 19 Jul 2011 13:53:12 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Jon Masters developed this wonderful SMI detector. For details please consult Documentation/hwlat_detector.txt. It could be ported to Linux diff --git a/debian/patches/features/all/rt/i915-bogus-warning-from-i915-when-running-on-PREEMPT.patch b/debian/patches/features/all/rt/i915-bogus-warning-from-i915-when-running-on-PREEMPT.patch index fb3e6f78d..b82a7501c 100644 --- a/debian/patches/features/all/rt/i915-bogus-warning-from-i915-when-running-on-PREEMPT.patch +++ b/debian/patches/features/all/rt/i915-bogus-warning-from-i915-when-running-on-PREEMPT.patch @@ -1,7 +1,7 @@ From: Clark Williams Date: Tue, 26 May 2015 10:43:43 -0500 Subject: i915: bogus warning from i915 when running on PREEMPT_RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz The i915 driver has a 'WARN_ON(!in_interrupt())' in the display handler, which whines constanly on the RT kernel (since the interrupt @@ -19,7 +19,7 @@ Signed-off-by: Sebastian Andrzej Siewior --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c -@@ -11613,7 +11613,7 @@ void intel_check_page_flip(struct drm_i9 +@@ -11647,7 +11647,7 @@ void intel_check_page_flip(struct drm_i9 struct intel_crtc *intel_crtc = to_intel_crtc(crtc); struct intel_flip_work *work; 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 a8ac8f1e9..9e84d3424 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Use the local_irq_*_nort variants. diff --git a/debian/patches/features/all/rt/idr-use-local-lock-for-protection.patch b/debian/patches/features/all/rt/idr-use-local-lock-for-protection.patch index c369ef6aa..502422602 100644 --- a/debian/patches/features/all/rt/idr-use-local-lock-for-protection.patch +++ b/debian/patches/features/all/rt/idr-use-local-lock-for-protection.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Tue, 14 Jul 2015 14:26:34 +0200 Subject: idr: Use local lock instead of preempt enable/disable -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz We need to protect the per cpu variable and prevent migration. 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 14534ef02..cd4bd9ce7 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 55fc722fd..a3849c658 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Use the _nort() primitives. diff --git a/debian/patches/features/all/rt/introduce_migrate_disable_cpu_light.patch b/debian/patches/features/all/rt/introduce_migrate_disable_cpu_light.patch index 0a4dbc3e0..f13323efd 100644 --- a/debian/patches/features/all/rt/introduce_migrate_disable_cpu_light.patch +++ b/debian/patches/features/all/rt/introduce_migrate_disable_cpu_light.patch @@ -1,7 +1,7 @@ Subject: Intrduce migrate_disable() + cpu_light() From: Thomas Gleixner Date: Fri, 17 Jun 2011 15:42:38 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Introduce migrate_disable(). The task can't be pushed to another CPU but can be preempted. 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 cd7aa653a..1b9ff538b 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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-don-t-disable-preempt-around-this_cpu_ptr.patch b/debian/patches/features/all/rt/iommu-iova-don-t-disable-preempt-around-this_cpu_ptr.patch index 57f14f3ec..51099fc07 100644 --- a/debian/patches/features/all/rt/iommu-iova-don-t-disable-preempt-around-this_cpu_ptr.patch +++ b/debian/patches/features/all/rt/iommu-iova-don-t-disable-preempt-around-this_cpu_ptr.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 15 Sep 2016 16:58:19 +0200 Subject: [PATCH] iommu/iova: don't disable preempt around this_cpu_ptr() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Commit 583248e6620a ("iommu/iova: Disable preemption around use of this_cpu_ptr()") disables preemption while accessing a per-CPU variable. diff --git a/debian/patches/features/all/rt/iommu-vt-d-don-t-disable-preemption-while-accessing-.patch b/debian/patches/features/all/rt/iommu-vt-d-don-t-disable-preemption-while-accessing-.patch index f0e3bc5e9..6576e81fc 100644 --- a/debian/patches/features/all/rt/iommu-vt-d-don-t-disable-preemption-while-accessing-.patch +++ b/debian/patches/features/all/rt/iommu-vt-d-don-t-disable-preemption-while-accessing-.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 15 Sep 2016 17:16:44 +0200 Subject: [PATCH] iommu/vt-d: don't disable preemption while accessing deferred_flush() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz get_cpu() disables preemption and returns the current CPU number. The CPU number is later only used once while retrieving the address of the diff --git a/debian/patches/features/all/rt/ipc-msg-Implement-lockless-pipelined-wakeups.patch b/debian/patches/features/all/rt/ipc-msg-Implement-lockless-pipelined-wakeups.patch index 9676b3e0b..a18becb5f 100644 --- a/debian/patches/features/all/rt/ipc-msg-Implement-lockless-pipelined-wakeups.patch +++ b/debian/patches/features/all/rt/ipc-msg-Implement-lockless-pipelined-wakeups.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 30 Oct 2015 11:59:07 +0100 Subject: ipc/msg: Implement lockless pipelined wakeups -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz This patch moves the wakeup_process() invocation so it is not done under the perm->lock by making use of a lockless wake_q. With this change, the diff --git a/debian/patches/features/all/rt/ipc-sem-rework-semaphore-wakeups.patch b/debian/patches/features/all/rt/ipc-sem-rework-semaphore-wakeups.patch index 087dddbad..baf0fc732 100644 --- a/debian/patches/features/all/rt/ipc-sem-rework-semaphore-wakeups.patch +++ b/debian/patches/features/all/rt/ipc-sem-rework-semaphore-wakeups.patch @@ -1,7 +1,7 @@ Subject: ipc/sem: Rework semaphore wakeups From: Peter Zijlstra Date: Wed, 14 Sep 2011 11:57:04 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Current sysv sems have a weird ass wakeup scheme that involves keeping preemption disabled over a potential O(n^2) loop and busy waiting on @@ -30,7 +30,7 @@ Signed-off-by: Thomas Gleixner --- a/ipc/sem.c +++ b/ipc/sem.c -@@ -686,6 +686,13 @@ static int perform_atomic_semop(struct s +@@ -712,6 +712,13 @@ static int perform_atomic_semop(struct s static void wake_up_sem_queue_prepare(struct list_head *pt, struct sem_queue *q, int error) { @@ -44,7 +44,7 @@ Signed-off-by: Thomas Gleixner if (list_empty(pt)) { /* * Hold preempt off so that we don't get preempted and have the -@@ -697,6 +704,7 @@ static void wake_up_sem_queue_prepare(st +@@ -723,6 +730,7 @@ static void wake_up_sem_queue_prepare(st q->pid = error; list_add_tail(&q->list, pt); @@ -52,7 +52,7 @@ Signed-off-by: Thomas Gleixner } /** -@@ -710,6 +718,7 @@ static void wake_up_sem_queue_prepare(st +@@ -736,6 +744,7 @@ static void wake_up_sem_queue_prepare(st */ static void wake_up_sem_queue_do(struct list_head *pt) { @@ -60,7 +60,7 @@ Signed-off-by: Thomas Gleixner struct sem_queue *q, *t; int did_something; -@@ -722,6 +731,7 @@ static void wake_up_sem_queue_do(struct +@@ -748,6 +757,7 @@ static void wake_up_sem_queue_do(struct } if (did_something) preempt_enable(); 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 c278f0ef4..8e18d6cc0 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 d97041aaa..123713f2c 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 b2f0c2c46..0ce0d0777 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 be4a8c363..39457e072 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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/kbuild-add-fno-PIE.patch b/debian/patches/features/all/rt/kbuild-add-fno-PIE.patch new file mode 100644 index 000000000..b15603ac6 --- /dev/null +++ b/debian/patches/features/all/rt/kbuild-add-fno-PIE.patch @@ -0,0 +1,37 @@ +From 5f490bfc33f69f490c6c7a90889287e84f1556c0 Mon Sep 17 00:00:00 2001 +From: Sebastian Andrzej Siewior +Date: Fri, 21 Oct 2016 12:21:07 +0200 +Subject: [PATCH] kbuild: add -fno-PIE +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz + +Debian started to build the gcc with -fPIE by default so the kernel +build ends before it starts properly with: +|kernel/bounds.c:1:0: error: code model kernel does not support PIC mode + +Also add to KBUILD_AFLAGSi due to: + +|gcc -Wp,-MD,arch/x86/entry/vdso/vdso32/.note.o.d … -mfentry -DCC_USING_FENTRY … vdso/vdso32/note.S +|arch/x86/entry/vdso/vdso32/note.S:1:0: sorry, unimplemented: -mfentry isn’t supported for 32-bit in c ombination with -fpic + +Signed-off-by: Sebastian Andrzej Siewior +--- + Makefile | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +--- a/Makefile ++++ b/Makefile +@@ -398,12 +398,12 @@ KBUILD_CPPFLAGS := -D__KERNEL__ + KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ + -fno-strict-aliasing -fno-common \ + -Werror-implicit-function-declaration \ +- -Wno-format-security \ ++ -Wno-format-security -fno-PIE \ + -std=gnu89 + + KBUILD_AFLAGS_KERNEL := + KBUILD_CFLAGS_KERNEL := +-KBUILD_AFLAGS := -D__ASSEMBLY__ ++KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE + KBUILD_AFLAGS_MODULE := -DMODULE + KBUILD_CFLAGS_MODULE := -DMODULE + KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds 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 cfb3094e7..d69142628 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 071ca9677..0503ccc43 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 929bda07a..7239c6cf7 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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-cpu-fix-cpu-down-problem-if-kthread-s-cpu-is-.patch b/debian/patches/features/all/rt/kernel-cpu-fix-cpu-down-problem-if-kthread-s-cpu-is-.patch index 81fb28339..12551dcb1 100644 --- a/debian/patches/features/all/rt/kernel-cpu-fix-cpu-down-problem-if-kthread-s-cpu-is-.patch +++ b/debian/patches/features/all/rt/kernel-cpu-fix-cpu-down-problem-if-kthread-s-cpu-is-.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 7 Jun 2013 22:37:06 +0200 Subject: kernel/cpu: fix cpu down problem if kthread's cpu is going down -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz If kthread is pinned to CPUx and CPUx is going down then we get into trouble: diff --git a/debian/patches/features/all/rt/kernel-futex-don-t-deboost-too-early.patch b/debian/patches/features/all/rt/kernel-futex-don-t-deboost-too-early.patch index ba22648bd..31ed78179 100644 --- a/debian/patches/features/all/rt/kernel-futex-don-t-deboost-too-early.patch +++ b/debian/patches/features/all/rt/kernel-futex-don-t-deboost-too-early.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 29 Sep 2016 18:49:22 +0200 Subject: [PATCH] kernel/futex: don't deboost too early -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz The sequence: T1 holds futex diff --git a/debian/patches/features/all/rt/kernel-hotplug-restore-original-cpu-mask-oncpu-down.patch b/debian/patches/features/all/rt/kernel-hotplug-restore-original-cpu-mask-oncpu-down.patch index 39a4cdb25..5f5e5792d 100644 --- a/debian/patches/features/all/rt/kernel-hotplug-restore-original-cpu-mask-oncpu-down.patch +++ b/debian/patches/features/all/rt/kernel-hotplug-restore-original-cpu-mask-oncpu-down.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 14 Jun 2013 17:16:35 +0200 Subject: kernel/hotplug: restore original cpu mask oncpu/down -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz If a task which is allowed to run only on CPU X puts CPU Y down then it will be allowed on all CPUs but the on CPU Y after it comes back from diff --git a/debian/patches/features/all/rt/kernel-migrate_disable-do-fastpath-in-atomic-irqs-of.patch b/debian/patches/features/all/rt/kernel-migrate_disable-do-fastpath-in-atomic-irqs-of.patch index 1b5f2c46a..5e4a5f3b9 100644 --- a/debian/patches/features/all/rt/kernel-migrate_disable-do-fastpath-in-atomic-irqs-of.patch +++ b/debian/patches/features/all/rt/kernel-migrate_disable-do-fastpath-in-atomic-irqs-of.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Tue, 9 Feb 2016 18:18:01 +0100 Subject: kernel: migrate_disable() do fastpath in atomic & irqs-off -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz With interrupts off it makes no sense to do the long path since we can't leave the CPU anyway. Also we might end up in a recursion with lockdep. diff --git a/debian/patches/features/all/rt/kernel-perf-mark-perf_cpu_context-s-timer-as-irqsafe.patch b/debian/patches/features/all/rt/kernel-perf-mark-perf_cpu_context-s-timer-as-irqsafe.patch index b633d73a2..ed22c04c4 100644 --- a/debian/patches/features/all/rt/kernel-perf-mark-perf_cpu_context-s-timer-as-irqsafe.patch +++ b/debian/patches/features/all/rt/kernel-perf-mark-perf_cpu_context-s-timer-as-irqsafe.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 4 Feb 2016 16:38:10 +0100 Subject: [PATCH] kernel/perf: mark perf_cpu_context's timer as irqsafe -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Otherwise we get a WARN_ON() backtrace and some events are reported as "not counted". 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 6879c15c6..dfee4842e 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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-softirq-unlock-with-irqs-on.patch b/debian/patches/features/all/rt/kernel-softirq-unlock-with-irqs-on.patch index 0d3d48189..8bba86ebd 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 8df917f90..8d2478389 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz On 07/27/2011 04:37 PM, Thomas Gleixner wrote: > - KGDB (not yet disabled) is reportedly unusable on -rt right now due @@ -34,7 +34,7 @@ Jason. #include #include #include -@@ -3112,6 +3113,8 @@ void serial8250_console_write(struct uar +@@ -3111,6 +3112,8 @@ void serial8250_console_write(struct uar if (port->sysrq || oops_in_progress) locked = 0; diff --git a/debian/patches/features/all/rt/latency-hist.patch b/debian/patches/features/all/rt/latency-hist.patch index f23a880a6..efe58bec4 100644 --- a/debian/patches/features/all/rt/latency-hist.patch +++ b/debian/patches/features/all/rt/latency-hist.patch @@ -1,7 +1,7 @@ Subject: tracing: Add latency histograms From: Carsten Emde Date: Tue, 19 Jul 2011 14:03:41 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz This patch provides a recording mechanism to store data of potential sources of system latencies. The recordings separately determine the diff --git a/debian/patches/features/all/rt/latency_hist-update-sched_wakeup-probe.patch b/debian/patches/features/all/rt/latency_hist-update-sched_wakeup-probe.patch index 99a444bc5..a72a9080c 100644 --- a/debian/patches/features/all/rt/latency_hist-update-sched_wakeup-probe.patch +++ b/debian/patches/features/all/rt/latency_hist-update-sched_wakeup-probe.patch @@ -1,7 +1,7 @@ Subject: latency_hist: Update sched_wakeup probe From: Mathieu Desnoyers Date: Sun, 25 Oct 2015 18:06:05 -0400 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz "sched: Introduce the 'trace_sched_waking' tracepoint" introduces a prototype change for the sched_wakeup probe: the "success" argument is diff --git a/debian/patches/features/all/rt/latencyhist-disable-jump-labels.patch b/debian/patches/features/all/rt/latencyhist-disable-jump-labels.patch index 4dfcbcca9..96042e130 100644 --- a/debian/patches/features/all/rt/latencyhist-disable-jump-labels.patch +++ b/debian/patches/features/all/rt/latencyhist-disable-jump-labels.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 4 Feb 2016 14:08:06 +0100 Subject: latencyhist: disable jump-labels -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Atleast on X86 we die a recursive death 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 b462e92aa..9a40879f6 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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/lglocks-rt.patch b/debian/patches/features/all/rt/lglocks-rt.patch index 063ad9db8..35ebcb685 100644 --- a/debian/patches/features/all/rt/lglocks-rt.patch +++ b/debian/patches/features/all/rt/lglocks-rt.patch @@ -1,7 +1,7 @@ Subject: lglocks: Provide a RT safe variant From: Thomas Gleixner Date: Wed, 15 Jun 2011 11:02:21 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz lglocks by itself will spin in order to get the lock. This will end up badly if a task with the highest priority keeps spinning while a task 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 9b30db378..8cb1aac33 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 8c0582252..74ee5f594 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 7e87b125a..75f3f60b0 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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/locallock-add-local_lock_on.patch b/debian/patches/features/all/rt/locallock-add-local_lock_on.patch index e87439a81..7d567532f 100644 --- a/debian/patches/features/all/rt/locallock-add-local_lock_on.patch +++ b/debian/patches/features/all/rt/locallock-add-local_lock_on.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 27 May 2016 15:11:51 +0200 Subject: [PATCH] locallock: add local_lock_on() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Signed-off-by: Sebastian Andrzej Siewior --- diff --git a/debian/patches/features/all/rt/localversion.patch b/debian/patches/features/all/rt/localversion.patch index ceb1a09d3..8f1b74f09 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Signed-off-by: Thomas Gleixner --- @@ -11,4 +11,4 @@ Signed-off-by: Thomas Gleixner --- /dev/null +++ b/localversion-rt @@ -0,0 +1 @@ -+-rt2 ++-rt5 diff --git a/debian/patches/features/all/rt/lockdep-Quiet-gcc-about-dangerous-__builtin_return_a.patch b/debian/patches/features/all/rt/lockdep-Quiet-gcc-about-dangerous-__builtin_return_a.patch index e3d2940ed..4f797fd89 100644 --- a/debian/patches/features/all/rt/lockdep-Quiet-gcc-about-dangerous-__builtin_return_a.patch +++ b/debian/patches/features/all/rt/lockdep-Quiet-gcc-about-dangerous-__builtin_return_a.patch @@ -2,7 +2,7 @@ From: Steven Rostedt Date: Thu, 8 Sep 2016 12:34:33 -0400 Subject: [PATCH] lockdep: Quiet gcc about dangerous __builtin_return_address() operations -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz [ Boris, does this quiet gcc for you? 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 c2a75457c..7c95e4a03 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 df180788b..3a9bcf419 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 85eec4bb4..c43521938 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz From: Yong Zhang 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 3fd859f52..49e8fa059 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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/lockinglglocks_Use_preempt_enabledisable_nort.patch b/debian/patches/features/all/rt/lockinglglocks_Use_preempt_enabledisable_nort.patch index 3b685cb4c..036633fbc 100644 --- a/debian/patches/features/all/rt/lockinglglocks_Use_preempt_enabledisable_nort.patch +++ b/debian/patches/features/all/rt/lockinglglocks_Use_preempt_enabledisable_nort.patch @@ -1,7 +1,7 @@ Subject: locking/lglocks: Use preempt_enable/disable_nort() in lg_double_[un]lock From: Mike Galbraith Date: Sat, 27 Feb 2016 08:34:43 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Let's not do that when snagging an rtmutex. diff --git a/debian/patches/features/all/rt/md-disable-bcache.patch b/debian/patches/features/all/rt/md-disable-bcache.patch index 3ae6bea8f..652b5bae9 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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-percpu-handling-rt-aware.patch b/debian/patches/features/all/rt/md-raid5-percpu-handling-rt-aware.patch index 6022d8e5a..adc3468ba 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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/mips-disable-highmem-on-rt.patch b/debian/patches/features/all/rt/mips-disable-highmem-on-rt.patch index 2249967c0..ad10ffcbb 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 3d598b815..66f767e72 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 91059a6f8..16b1d60c8 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 a42051fd4..696ed0541 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 4ff122ec7..82dfe2c92 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 cb9a00fd2..5af59c2e7 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 0445241d6..0fd564605 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 6344747a9..51e5a0790 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 61ca17939..99d9502db 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 5755ccc2d..591ee0d6b 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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-memcontrol-mem_cgroup_migrate-replace-another-loc.patch b/debian/patches/features/all/rt/mm-memcontrol-mem_cgroup_migrate-replace-another-loc.patch index a9e4ba545..31eda2123 100644 --- a/debian/patches/features/all/rt/mm-memcontrol-mem_cgroup_migrate-replace-another-loc.patch +++ b/debian/patches/features/all/rt/mm-memcontrol-mem_cgroup_migrate-replace-another-loc.patch @@ -2,7 +2,7 @@ From: Mike Galbraith Date: Sun, 5 Jun 2016 08:11:13 +0200 Subject: [PATCH] mm/memcontrol: mem_cgroup_migrate() - replace another local_irq_disable() w. local_lock_irq() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz v4.6 grew a local_irq_disable() in mm/memcontrol.c::mem_cgroup_migrate(). Convert it to use the existing local lock (event_lock) like the others. 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 d97cd9089..c2c8eb7cd 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 44c39e2d2..baf3e9cfc 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 b5c981a43..9f99101b0 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 75c02deb0..14638d5bd 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 e2398b80e..2bbe81a09 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 39aede6c1..f2395b3fb 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 687afdcc1..c927a0a39 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz The local_irq_save() is not only used to get things done "fast" but also to ensure that in case of SG_MITER_ATOMIC we are in "atomic" 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 28c8230e5..f1f2acdad 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 15234b221..8505aaacb 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 new file mode 100644 index 000000000..b2b07a01e --- /dev/null +++ b/debian/patches/features/all/rt/mm_zsmalloc_copy_with_get_cpu_var_and_locking.patch @@ -0,0 +1,197 @@ +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/4.8/older/patches-4.8.6-rt5.tar.xz + +get_cpu_var() disables preemption and triggers a might_sleep() splat later. +This is replaced with get_locked_var(). +This bitspinlocks are replaced with a proper mutex which requires a slightly +larger struct to allocate. + +Signed-off-by: Mike Galbraith +[bigeasy: replace the bitspin_lock() with a mutex, get_locked_var(). Mike then +fixed the size magic] +Signed-off-by: Sebastian Andrzej Siewior +--- + mm/zsmalloc.c | 80 +++++++++++++++++++++++++++++++++++++++++++++++++++++----- + 1 file changed, 74 insertions(+), 6 deletions(-) + +--- a/mm/zsmalloc.c ++++ b/mm/zsmalloc.c +@@ -53,6 +53,7 @@ + #include + #include + #include ++#include + + #define ZSPAGE_MAGIC 0x58 + +@@ -70,9 +71,22 @@ + */ + #define ZS_MAX_ZSPAGE_ORDER 2 + #define ZS_MAX_PAGES_PER_ZSPAGE (_AC(1, UL) << ZS_MAX_ZSPAGE_ORDER) +- + #define ZS_HANDLE_SIZE (sizeof(unsigned long)) + ++#ifdef CONFIG_PREEMPT_RT_FULL ++ ++struct zsmalloc_handle { ++ unsigned long addr; ++ struct mutex lock; ++}; ++ ++#define ZS_HANDLE_ALLOC_SIZE (sizeof(struct zsmalloc_handle)) ++ ++#else ++ ++#define ZS_HANDLE_ALLOC_SIZE (sizeof(unsigned long)) ++#endif ++ + /* + * Object location (, ) is encoded as + * as single (unsigned long) handle value. +@@ -327,7 +341,7 @@ static void SetZsPageMovable(struct zs_p + + static int create_cache(struct zs_pool *pool) + { +- pool->handle_cachep = kmem_cache_create("zs_handle", ZS_HANDLE_SIZE, ++ pool->handle_cachep = kmem_cache_create("zs_handle", ZS_HANDLE_ALLOC_SIZE, + 0, 0, NULL); + if (!pool->handle_cachep) + return 1; +@@ -351,10 +365,27 @@ static void destroy_cache(struct zs_pool + + static unsigned long cache_alloc_handle(struct zs_pool *pool, gfp_t gfp) + { +- return (unsigned long)kmem_cache_alloc(pool->handle_cachep, +- gfp & ~(__GFP_HIGHMEM|__GFP_MOVABLE)); ++ void *p; ++ ++ p = kmem_cache_alloc(pool->handle_cachep, ++ gfp & ~(__GFP_HIGHMEM|__GFP_MOVABLE)); ++#ifdef CONFIG_PREEMPT_RT_FULL ++ if (p) { ++ struct zsmalloc_handle *zh = p; ++ ++ mutex_init(&zh->lock); ++ } ++#endif ++ return (unsigned long)p; + } + ++#ifdef CONFIG_PREEMPT_RT_FULL ++static struct zsmalloc_handle *zs_get_pure_handle(unsigned long handle) ++{ ++ return (void *)(handle &~((1 << OBJ_TAG_BITS) - 1)); ++} ++#endif ++ + static void cache_free_handle(struct zs_pool *pool, unsigned long handle) + { + kmem_cache_free(pool->handle_cachep, (void *)handle); +@@ -373,12 +404,18 @@ static void cache_free_zspage(struct zs_ + + static void record_obj(unsigned long handle, unsigned long obj) + { ++#ifdef CONFIG_PREEMPT_RT_FULL ++ struct zsmalloc_handle *zh = zs_get_pure_handle(handle); ++ ++ WRITE_ONCE(zh->addr, obj); ++#else + /* + * lsb of @obj represents handle lock while other bits + * represent object value the handle is pointing so + * updating shouldn't do store tearing. + */ + WRITE_ONCE(*(unsigned long *)handle, obj); ++#endif + } + + /* zpool driver */ +@@ -467,6 +504,7 @@ MODULE_ALIAS("zpool-zsmalloc"); + + /* per-cpu VM mapping areas for zspage accesses that cross page boundaries */ + static DEFINE_PER_CPU(struct mapping_area, zs_map_area); ++static DEFINE_LOCAL_IRQ_LOCK(zs_map_area_lock); + + static bool is_zspage_isolated(struct zspage *zspage) + { +@@ -902,7 +940,13 @@ static unsigned long location_to_obj(str + + static unsigned long handle_to_obj(unsigned long handle) + { ++#ifdef CONFIG_PREEMPT_RT_FULL ++ struct zsmalloc_handle *zh = zs_get_pure_handle(handle); ++ ++ return zh->addr; ++#else + return *(unsigned long *)handle; ++#endif + } + + static unsigned long obj_to_head(struct page *page, void *obj) +@@ -916,22 +960,46 @@ static unsigned long obj_to_head(struct + + static inline int testpin_tag(unsigned long handle) + { ++#ifdef CONFIG_PREEMPT_RT_FULL ++ struct zsmalloc_handle *zh = zs_get_pure_handle(handle); ++ ++ return mutex_is_locked(&zh->lock); ++#else + return bit_spin_is_locked(HANDLE_PIN_BIT, (unsigned long *)handle); ++#endif + } + + static inline int trypin_tag(unsigned long handle) + { ++#ifdef CONFIG_PREEMPT_RT_FULL ++ struct zsmalloc_handle *zh = zs_get_pure_handle(handle); ++ ++ return mutex_trylock(&zh->lock); ++#else + return bit_spin_trylock(HANDLE_PIN_BIT, (unsigned long *)handle); ++#endif + } + + static void pin_tag(unsigned long handle) + { ++#ifdef CONFIG_PREEMPT_RT_FULL ++ struct zsmalloc_handle *zh = zs_get_pure_handle(handle); ++ ++ return mutex_lock(&zh->lock); ++#else + bit_spin_lock(HANDLE_PIN_BIT, (unsigned long *)handle); ++#endif + } + + static void unpin_tag(unsigned long handle) + { ++#ifdef CONFIG_PREEMPT_RT_FULL ++ struct zsmalloc_handle *zh = zs_get_pure_handle(handle); ++ ++ return mutex_unlock(&zh->lock); ++#else + bit_spin_unlock(HANDLE_PIN_BIT, (unsigned long *)handle); ++#endif + } + + static void reset_page(struct page *page) +@@ -1423,7 +1491,7 @@ void *zs_map_object(struct zs_pool *pool + class = pool->size_class[class_idx]; + off = (class->size * obj_idx) & ~PAGE_MASK; + +- area = &get_cpu_var(zs_map_area); ++ area = &get_locked_var(zs_map_area_lock, zs_map_area); + area->vm_mm = mm; + if (off + class->size <= PAGE_SIZE) { + /* this object is contained entirely within a page */ +@@ -1477,7 +1545,7 @@ void zs_unmap_object(struct zs_pool *poo + + __zs_unmap_object(area, pages, off, class->size); + } +- put_cpu_var(zs_map_area); ++ put_locked_var(zs_map_area_lock, zs_map_area); + + migrate_read_unlock(zspage); + unpin_tag(handle); 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 fa3558519..a6e8afd3b 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 86fdbcd8e..8ce8f7776 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 d2cfa72b1..f4b718507 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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-Qdisc-use-a-seqlock-instead-seqcount.patch b/debian/patches/features/all/rt/net-Qdisc-use-a-seqlock-instead-seqcount.patch index 40963e6a1..fbf62b863 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 db8085f21..e9bae8789 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 dbc301449..4066e0dbc 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 a602f1962..5c4509cce 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 22581d3ac..27d5efef4 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 ccd4130be..ed9bab015 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 08e086be1..213e2a4dc 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 37f7e9195..dda4ca107 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 de278bee8..f12410f0c 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 8fd9e3e58..4e5057604 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 a655048c2..8960c950d 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 04fbc4997..ab60c58ea 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 @@ -21,7 +21,7 @@ Signed-off-by: Sebastian Andrzej Siewior --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h -@@ -487,6 +487,14 @@ extern void thread_do_softirq(void); +@@ -488,6 +488,14 @@ extern void thread_do_softirq(void); extern void open_softirq(int nr, void (*action)(struct softirq_action *)); extern void softirq_init(void); extern void __raise_softirq_irqoff(unsigned int nr); 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 0bb54bf02..3c229330f 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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-use-cpu-chill.patch b/debian/patches/features/all/rt/net-use-cpu-chill.patch index 412973bff..30566c814 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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-wireless-warn-nort.patch b/debian/patches/features/all/rt/net-wireless-warn-nort.patch index 4cf8fbf03..d5cfe63c0 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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__Make_synchronize-rcu_expedited_conditional-on-non-rt.patch b/debian/patches/features/all/rt/net__Make_synchronize-rcu_expedited_conditional-on-non-rt.patch index 6480e42a1..4831ed022 100644 --- a/debian/patches/features/all/rt/net__Make_synchronize-rcu_expedited_conditional-on-non-rt.patch +++ b/debian/patches/features/all/rt/net__Make_synchronize-rcu_expedited_conditional-on-non-rt.patch @@ -1,7 +1,7 @@ Date: Tue, 27 Oct 2015 07:31:53 -0500 From: Josh Cartwright Subject: net: Make synchronize_rcu_expedited() conditional on !RT_FULL -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz While the use of synchronize_rcu_expedited() might make synchronize_net() "faster", it does so at significant cost on RT 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 7155e6a4e..8de5632a7 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 3a97ae525..9711748b3 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 8a12a491c..92c7717bc 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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-access-use-__wake_up_all_locked.patch b/debian/patches/features/all/rt/pci-access-use-__wake_up_all_locked.patch index 6528914f6..fe6f26f2b 100644 --- a/debian/patches/features/all/rt/pci-access-use-__wake_up_all_locked.patch +++ b/debian/patches/features/all/rt/pci-access-use-__wake_up_all_locked.patch @@ -1,7 +1,7 @@ Subject: pci: Use __wake_up_all_locked in pci_unblock_user_cfg_access() From: Thomas Gleixner Date: Thu, 01 Dec 2011 00:07:16 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz The waitqueue is protected by the pci_lock, so we can just avoid to lock the waitqueue lock itself. That prevents the 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 eee6399ef..648a3b0e5 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz the local_irq_save() + spin_lock() does not work that well on -RT diff --git a/debian/patches/features/all/rt/perf-make-swevent-hrtimer-irqsafe.patch b/debian/patches/features/all/rt/perf-make-swevent-hrtimer-irqsafe.patch index 37e233ae7..80e241761 100644 --- a/debian/patches/features/all/rt/perf-make-swevent-hrtimer-irqsafe.patch +++ b/debian/patches/features/all/rt/perf-make-swevent-hrtimer-irqsafe.patch @@ -1,7 +1,7 @@ From: Yong Zhang Date: Wed, 11 Jul 2012 22:05:21 +0000 Subject: perf: Make swevent hrtimer run in irq instead of softirq -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Otherwise we get a deadlock like below: 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 9ba94a67b..0bda66a11 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz With RT_FULL we get the below wreckage: 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 0b7d16388..369cccbb4 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 0ae9606c5..20610acc0 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 357ccd867..cf2910c25 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 81746ff5a..4a7cefdc7 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Posix timers should not send broadcast signals and kernel only signals. Prevent it. 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 d810f7813..05e440db2 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 1fedefc33..aed464cfc 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 9a448c3ad..8c5012fbc 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 040e71f96..639bdac6b 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 0df623384..2f7e85e75 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 04c5b1d0c..d4e8cb686 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 d26c701f4..eadce34e7 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz It has become an obsession to mitigate the determinism vs. throughput loss of RT. Looking at the mainline semantics of preemption points @@ -357,7 +357,7 @@ Signed-off-by: Thomas Gleixner */ --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c -@@ -3486,7 +3486,7 @@ check_preempt_tick(struct cfs_rq *cfs_rq +@@ -3508,7 +3508,7 @@ check_preempt_tick(struct cfs_rq *cfs_rq ideal_runtime = sched_slice(cfs_rq, curr); delta_exec = curr->sum_exec_runtime - curr->prev_sum_exec_runtime; if (delta_exec > ideal_runtime) { @@ -366,7 +366,7 @@ Signed-off-by: Thomas Gleixner /* * The current task ran long enough, ensure it doesn't get * re-elected due to buddy favours. -@@ -3510,7 +3510,7 @@ check_preempt_tick(struct cfs_rq *cfs_rq +@@ -3532,7 +3532,7 @@ check_preempt_tick(struct cfs_rq *cfs_rq return; if (delta > ideal_runtime) @@ -375,7 +375,7 @@ Signed-off-by: Thomas Gleixner } static void -@@ -3655,7 +3655,7 @@ entity_tick(struct cfs_rq *cfs_rq, struc +@@ -3677,7 +3677,7 @@ entity_tick(struct cfs_rq *cfs_rq, struc * validating it and just reschedule. */ if (queued) { @@ -384,7 +384,7 @@ Signed-off-by: Thomas Gleixner return; } /* -@@ -3837,7 +3837,7 @@ static void __account_cfs_rq_runtime(str +@@ -3859,7 +3859,7 @@ static void __account_cfs_rq_runtime(str * hierarchy can be throttled */ if (!assign_cfs_rq_runtime(cfs_rq) && likely(cfs_rq->curr)) @@ -393,7 +393,7 @@ Signed-off-by: Thomas Gleixner } static __always_inline -@@ -4465,7 +4465,7 @@ static void hrtick_start_fair(struct rq +@@ -4487,7 +4487,7 @@ static void hrtick_start_fair(struct rq if (delta < 0) { if (rq->curr == p) @@ -402,7 +402,7 @@ Signed-off-by: Thomas Gleixner return; } hrtick_start(rq, delta); -@@ -5654,7 +5654,7 @@ static void check_preempt_wakeup(struct +@@ -5676,7 +5676,7 @@ static void check_preempt_wakeup(struct return; preempt: @@ -411,7 +411,7 @@ Signed-off-by: Thomas Gleixner /* * Only set the backward buddy when the current task is still * on the rq. This can happen when a wakeup gets interleaved -@@ -8380,7 +8380,7 @@ static void task_fork_fair(struct task_s +@@ -8402,7 +8402,7 @@ static void task_fork_fair(struct task_s * 'current' within the tree based on its new key value. */ swap(curr->vruntime, se->vruntime); @@ -420,7 +420,7 @@ Signed-off-by: Thomas Gleixner } se->vruntime -= cfs_rq->min_vruntime; -@@ -8404,7 +8404,7 @@ prio_changed_fair(struct rq *rq, struct +@@ -8426,7 +8426,7 @@ prio_changed_fair(struct rq *rq, struct */ if (rq->curr == p) { if (p->prio > oldprio) 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 926fad7f7..64e2e2c71 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 7c80e52dd..806675f66 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 9e17f1ef5..42ba8d89f 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 96a3dac9a..5dd0488cb 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 c08d68503..5c4179218 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz As explained by Alexander Fyodorov : diff --git a/debian/patches/features/all/rt/radix-tree-rt-aware.patch b/debian/patches/features/all/rt/radix-tree-rt-aware.patch index b515a3e8b..955cefd47 100644 --- a/debian/patches/features/all/rt/radix-tree-rt-aware.patch +++ b/debian/patches/features/all/rt/radix-tree-rt-aware.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Sun, 17 Jul 2011 21:33:18 +0200 Subject: radix-tree: Make RT aware -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Disable radix_tree_preload() on -RT. This functions returns with preemption disabled which may cause high latencies and breaks if the 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 d5d468910..458c7d8e2 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 bb8ad819b..b9ffc04e9 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 524ca0402..156d08373 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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-disable-rcu-fast-no-hz-on-rt.patch b/debian/patches/features/all/rt/rcu-disable-rcu-fast-no-hz-on-rt.patch index 5c040f17d..2fd0e2500 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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-make-RCU_BOOST-default-on-RT.patch b/debian/patches/features/all/rt/rcu-make-RCU_BOOST-default-on-RT.patch index 17d82caae..7d7a06e90 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 184411dfc..67c178294 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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/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 a4bd7397a..79d530be3 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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-migrate_disable-race-with-cpu-hotplug-3f.patch b/debian/patches/features/all/rt/re-migrate_disable-race-with-cpu-hotplug-3f.patch index 9ecec2b66..db7e2dfa7 100644 --- a/debian/patches/features/all/rt/re-migrate_disable-race-with-cpu-hotplug-3f.patch +++ b/debian/patches/features/all/rt/re-migrate_disable-race-with-cpu-hotplug-3f.patch @@ -1,7 +1,7 @@ From: Yong Zhang Date: Thu, 28 Jul 2011 11:16:00 +0800 Subject: hotplug: Reread hotplug_pcp on pin_current_cpu() retry -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz When retry happens, it's likely that the task has been migrated to another cpu (except unplug failed), but it still derefernces the 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 44f78bafb..8118c7d1c 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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/relay-fix-timer-madness.patch b/debian/patches/features/all/rt/relay-fix-timer-madness.patch index 2b1b4e2b1..683a4391a 100644 --- a/debian/patches/features/all/rt/relay-fix-timer-madness.patch +++ b/debian/patches/features/all/rt/relay-fix-timer-madness.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:44:07 -0500 Subject: relay: Fix timer madness -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz remove timer calls (!!!) from deep within the tracing infrastructure. This was totally bogus code that can cause lockups and worse. Poll 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 d93ddbb96..050e343da 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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-add-rt-locks.patch b/debian/patches/features/all/rt/rt-add-rt-locks.patch index 10ee18c84..d43d72b20 100644 --- a/debian/patches/features/all/rt/rt-add-rt-locks.patch +++ b/debian/patches/features/all/rt/rt-add-rt-locks.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Sun, 26 Jul 2009 19:39:56 +0200 Subject: rt: Add the preempt-rt lock replacement APIs -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Map spinlocks, rwlocks, rw_semaphores and semaphores to the rt_mutex based locking functions for preempt-rt. 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 dc2f8ca8a..e25a0ada6 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 69956203a..802e991ef 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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-locking-Reenable-migration-accross-schedule.patch b/debian/patches/features/all/rt/rt-locking-Reenable-migration-accross-schedule.patch index 61015c543..f9821f5e6 100644 --- a/debian/patches/features/all/rt/rt-locking-Reenable-migration-accross-schedule.patch +++ b/debian/patches/features/all/rt/rt-locking-Reenable-migration-accross-schedule.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Mon, 8 Feb 2016 16:15:28 +0100 Subject: rt/locking: Reenable migration accross schedule -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz We currently disable migration across lock acquisition. That includes the part where we block on the lock and schedule out. We cannot disable migration after 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 7d31dc12a..7cc3a61ed 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 c7dc30543..e6bf6fc31 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 299ec2ca0..09cc0a6bb 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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-add-a-first-shot-of-ww_mutex.patch b/debian/patches/features/all/rt/rtmutex-add-a-first-shot-of-ww_mutex.patch index 1853ca3ed..ff5075ae8 100644 --- a/debian/patches/features/all/rt/rtmutex-add-a-first-shot-of-ww_mutex.patch +++ b/debian/patches/features/all/rt/rtmutex-add-a-first-shot-of-ww_mutex.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Mon, 28 Oct 2013 09:36:37 +0100 Subject: rtmutex: Add RT aware ww locks -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz lockdep says: | -------------------------------------------------------------------------- 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 4b711a834..671a805f2 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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-futex-prepare-rt.patch b/debian/patches/features/all/rt/rtmutex-futex-prepare-rt.patch index e0de2ab89..78a1ad885 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 070e4dabc..55c82cb48 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 480b23f85..eba32cb55 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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_dont_include_rcu.patch b/debian/patches/features/all/rt/rtmutex_dont_include_rcu.patch index e0f76cc2c..181b34e53 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz The RCU header pulls in spinlock.h and fails due not yet defined types: @@ -20,9 +20,9 @@ a new header file which can be included by both users. Signed-off-by: Sebastian Andrzej Siewior --- include/linux/rbtree.h | 2 - - include/linux/rcu_assign_pointer.h | 53 +++++++++++++++++++++++++++++++++++++ - include/linux/rcupdate.h | 49 ---------------------------------- - 3 files changed, 55 insertions(+), 49 deletions(-) + include/linux/rcu_assign_pointer.h | 54 +++++++++++++++++++++++++++++++++++++ + include/linux/rcupdate.h | 49 --------------------------------- + 3 files changed, 56 insertions(+), 49 deletions(-) --- a/include/linux/rbtree.h +++ b/include/linux/rbtree.h @@ -37,10 +37,11 @@ Signed-off-by: Sebastian Andrzej Siewior unsigned long __rb_parent_color; --- /dev/null +++ b/include/linux/rcu_assign_pointer.h -@@ -0,0 +1,53 @@ +@@ -0,0 +1,54 @@ +#ifndef __LINUX_RCU_ASSIGN_POINTER_H__ +#define __LINUX_RCU_ASSIGN_POINTER_H__ +#include ++#include + +/** + * RCU_INITIALIZER() - statically initialize an RCU-protected global variable 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 new file mode 100644 index 000000000..5aa9fb682 --- /dev/null +++ b/debian/patches/features/all/rt/rxrpc-remove-unused-static-variables.patch @@ -0,0 +1,28 @@ +From f9cf73e8bad7daa90318edfd933f8676cd1e5cd4 Mon Sep 17 00:00:00 2001 +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/4.8/older/patches-4.8.6-rt5.tar.xz + +The rxrpc_security_methods and rxrpc_security_sem user has been removed +in 648af7fca159 ("rxrpc: Absorb the rxkad security module"). This was +noticed by kbuild test robot for the -RT tree but is also true for !RT. + +Reported-by: kbuild test robot +Signed-off-by: Sebastian Andrzej Siewior +--- + net/rxrpc/security.c | 3 --- + 1 file changed, 3 deletions(-) + +--- a/net/rxrpc/security.c ++++ b/net/rxrpc/security.c +@@ -19,9 +19,6 @@ + #include + #include "ar-internal.h" + +-static LIST_HEAD(rxrpc_security_methods); +-static DECLARE_RWSEM(rxrpc_security_sem); +- + static const struct rxrpc_security *rxrpc_security_types[] = { + [RXRPC_SECURITY_NONE] = &rxrpc_no_security, + #ifdef CONFIG_RXKAD 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 1ac3daacc..70b409f90 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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/sc16is7xx_Drop_bogus_use_of_IRQF_ONESHOT.patch b/debian/patches/features/all/rt/sc16is7xx_Drop_bogus_use_of_IRQF_ONESHOT.patch index 5729af540..29ca3f8bf 100644 --- a/debian/patches/features/all/rt/sc16is7xx_Drop_bogus_use_of_IRQF_ONESHOT.patch +++ b/debian/patches/features/all/rt/sc16is7xx_Drop_bogus_use_of_IRQF_ONESHOT.patch @@ -1,7 +1,7 @@ Subject: sc16is7xx: Drop bogus use of IRQF_ONESHOT From: Josh Cartwright Date: Thu, 18 Feb 2016 11:26:12 -0600 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz The use of IRQF_ONESHOT when registering an interrupt handler with request_irq() is non-sensical. diff --git a/debian/patches/features/all/rt/sched-deadline-dl_task_timer-has-to-be-irqsafe.patch b/debian/patches/features/all/rt/sched-deadline-dl_task_timer-has-to-be-irqsafe.patch index 923fa9e7f..43595056f 100644 --- a/debian/patches/features/all/rt/sched-deadline-dl_task_timer-has-to-be-irqsafe.patch +++ b/debian/patches/features/all/rt/sched-deadline-dl_task_timer-has-to-be-irqsafe.patch @@ -1,7 +1,7 @@ From: Juri Lelli Date: Tue, 13 May 2014 15:30:20 +0200 Subject: sched/deadline: dl_task_timer has to be irqsafe -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz As for rt_period_timer, dl_task_timer has to be irqsafe. 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 04e2cc25f..77d23a4bf 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 8f8307419..51f74fdae 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 a0c167bb8..1d01e3a06 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 6f88af229..83053f1a9 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 e481ddc88..4f58cfc07 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 13fa92ed7..1eacc9879 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Takes sleeping locks and calls into the memory allocator, so nothing we want to do in task switch and oder atomic contexts. @@ -120,7 +120,7 @@ Signed-off-by: Thomas Gleixner nohz_balance_exit_idle(cpu); hrtick_clear(rq); + if (per_cpu(idle_last_mm, cpu)) { -+ mmdrop(per_cpu(idle_last_mm, cpu)); ++ mmdrop_delayed(per_cpu(idle_last_mm, cpu)); + per_cpu(idle_last_mm, cpu) = NULL; + } return 0; 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 f64046172..32baf7ba8 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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-ttwu-ensure-success-return-is-correct.patch b/debian/patches/features/all/rt/sched-ttwu-ensure-success-return-is-correct.patch index 7388fe35f..1e12d4d1d 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 cb0c3c065..1304e0f07 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 e041d2dd6..b8519ab3a 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 b00ae807b..2e0c5b7d3 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 64d7bdbed..db3553d93 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 d02e83c40..ad838e267 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 9565cf3fc..8ae4381e1 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 9ca424c0b..1cca7f59c 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 d650e95ad..b776b0110 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 90ff69b31..7528b9080 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 3cc8fc4e0..0b2e7e9f6 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 38c40550e..7e53aa0a6 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 76b7d3bcf..d79dd458f 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 0b6994d44..494c7eb85 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 fa070f0ea..eb8a9ac5d 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 3fc863b73..17dfe3fbf 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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/sparc64-use-generic-rwsem-spinlocks-rt.patch b/debian/patches/features/all/rt/sparc64-use-generic-rwsem-spinlocks-rt.patch index f651dcb04..39de1c008 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 35ba7a4ba..733381b60 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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/stomp-machine-create-lg_global_trylock_relax-primiti.patch b/debian/patches/features/all/rt/stomp-machine-create-lg_global_trylock_relax-primiti.patch index 4cda4e271..c0da2bce4 100644 --- a/debian/patches/features/all/rt/stomp-machine-create-lg_global_trylock_relax-primiti.patch +++ b/debian/patches/features/all/rt/stomp-machine-create-lg_global_trylock_relax-primiti.patch @@ -1,7 +1,7 @@ From: Mike Galbraith Date: Fri, 2 May 2014 13:13:22 +0200 Subject: stomp-machine: create lg_global_trylock_relax() primitive -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Create lg_global_trylock_relax() for use by stopper thread when it cannot schedule, to deal with stop_cpus_lock, which is now an lglock. diff --git a/debian/patches/features/all/rt/stomp-machine-use-lg_global_trylock_relax-to-dead-wi.patch b/debian/patches/features/all/rt/stomp-machine-use-lg_global_trylock_relax-to-dead-wi.patch index 47d0e5e49..c26128f7b 100644 --- a/debian/patches/features/all/rt/stomp-machine-use-lg_global_trylock_relax-to-dead-wi.patch +++ b/debian/patches/features/all/rt/stomp-machine-use-lg_global_trylock_relax-to-dead-wi.patch @@ -1,7 +1,7 @@ From: Mike Galbraith Date: Fri, 2 May 2014 13:13:34 +0200 Subject: stomp-machine: use lg_global_trylock_relax() to dead with stop_cpus_lock lglock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz If the stop machinery is called from inactive CPU we cannot use lg_global_lock(), because some other stomp machine invocation might be 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 dcc3f81e8..0be4892d5 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 7a3e6aa5a..ef76d1d7a 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 6e2a0b808..3b83daae0 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 1084bd0ba..0b4f7d4c4 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 e3e9a699a..1111ab173 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 ef2204d3e..834c74e43 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 df6963644..0036950ee 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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/tick-broadcast--Make-hrtimer-irqsafe.patch b/debian/patches/features/all/rt/tick-broadcast--Make-hrtimer-irqsafe.patch index 995c27007..ec3367d27 100644 --- a/debian/patches/features/all/rt/tick-broadcast--Make-hrtimer-irqsafe.patch +++ b/debian/patches/features/all/rt/tick-broadcast--Make-hrtimer-irqsafe.patch @@ -1,7 +1,7 @@ Subject: tick/broadcast: Make broadcast hrtimer irqsafe From: Thomas Gleixner Date: Sat, 27 Feb 2016 10:47:10 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Otherwise we end up with the following: 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 dded6c37a..afd78cb27 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 267fe3538..e0e40bd01 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 d7c24de9a..5c6d3d1a3 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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/timer-make-the-base-lock-raw.patch b/debian/patches/features/all/rt/timer-make-the-base-lock-raw.patch index 36e3eadcf..829015d40 100644 --- a/debian/patches/features/all/rt/timer-make-the-base-lock-raw.patch +++ b/debian/patches/features/all/rt/timer-make-the-base-lock-raw.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 13 Jul 2016 18:22:23 +0200 Subject: [PATCH] timer: make the base lock raw -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz The part where the base lock is held got more predictable / shorter after the timer rework. One reason is the lack of re-cascading. 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 3ac90d7eb..b8946ebab 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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/trace-latency-hist-Consider-new-argument-when-probin.patch b/debian/patches/features/all/rt/trace-latency-hist-Consider-new-argument-when-probin.patch index ff18686ff..a294f77da 100644 --- a/debian/patches/features/all/rt/trace-latency-hist-Consider-new-argument-when-probin.patch +++ b/debian/patches/features/all/rt/trace-latency-hist-Consider-new-argument-when-probin.patch @@ -2,7 +2,7 @@ From: Carsten Emde Date: Tue, 5 Jan 2016 10:21:59 +0100 Subject: trace/latency-hist: Consider new argument when probing the sched_switch tracer -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz The sched_switch tracer has got a new argument. Fix the latency tracer accordingly. diff --git a/debian/patches/features/all/rt/trace_Use_rcuidle_version_for_preemptoff_hist_trace_point.patch b/debian/patches/features/all/rt/trace_Use_rcuidle_version_for_preemptoff_hist_trace_point.patch index 834319454..79b40cf7c 100644 --- a/debian/patches/features/all/rt/trace_Use_rcuidle_version_for_preemptoff_hist_trace_point.patch +++ b/debian/patches/features/all/rt/trace_Use_rcuidle_version_for_preemptoff_hist_trace_point.patch @@ -1,7 +1,7 @@ Subject: trace: Use rcuidle version for preemptoff_hist trace point From: Yang Shi Date: Tue, 23 Feb 2016 13:23:23 -0800 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz When running -rt kernel with both PREEMPT_OFF_HIST and LOCKDEP enabled, the below error is reported: 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 b04622490..fa388f669 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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-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 6f259b15d..218e3fc6d 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 @@ -15,7 +15,7 @@ Signed-off-by: Sebastian Andrzej Siewior --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c -@@ -3110,10 +3110,8 @@ void serial8250_console_write(struct uar +@@ -3109,10 +3109,8 @@ void serial8250_console_write(struct uar serial8250_rpm_get(up); 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 6208cbfd4..fb02d0646 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 44ff5d438..2fa129922 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 7cce26686..490d35ceb 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 bd1ae36e4..78941c3cf 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 2fd38dd19..59897b45a 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 f2e9065b8..1be39b2ce 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 47a3b7b15..117b5c728 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz --- kernel/sched/core.c | 81 ++++++++------------------------------------ @@ -162,9 +162,9 @@ Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4. /** - * wq_worker_waking_up - a worker is waking up -- * @task: task waking up + * wq_worker_running - a worker is running again - * @cpu: CPU @task is waking up to + * @task: task waking up +- * @cpu: CPU @task is waking up to * - * This function is called during try_to_wake_up() when a worker is - * being awoken. 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 8d3bb6391..3c5b2bbe9 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 bffcf02b3..87e99ae02 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 bbc4acdc5..f4f847b8b 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 a5386379c..1002cee4b 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Shrug. Lots of hobbyists have a beast in their basement, right? diff --git a/debian/patches/features/all/rt/x86-apic-get-rid-of-warning-acpi_ioapic_lock-defined.patch b/debian/patches/features/all/rt/x86-apic-get-rid-of-warning-acpi_ioapic_lock-defined.patch new file mode 100644 index 000000000..6c4a611ab --- /dev/null +++ b/debian/patches/features/all/rt/x86-apic-get-rid-of-warning-acpi_ioapic_lock-defined.patch @@ -0,0 +1,45 @@ +From 309789b8125b7eee6fd1c3a4716fcb6ea1ad32ba Mon Sep 17 00:00:00 2001 +From: Sebastian Andrzej Siewior +Date: Fri, 21 Oct 2016 10:29:11 +0200 +Subject: [PATCH] x86/apic: get rid of "warning: 'acpi_ioapic_lock' defined but + not used" +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz + +kbuild test robot reported this against the -RT tree: + +| In file included from include/linux/mutex.h:30:0, +| from include/linux/notifier.h:13, +| from include/linux/memory_hotplug.h:6, +| from include/linux/mmzone.h:777, +| from include/linux/gfp.h:5, +| from include/linux/slab.h:14, +| from include/linux/resource_ext.h:19, +| from include/linux/acpi.h:26, +| from arch/x86/kernel/acpi/boot.c:27: +|>> arch/x86/kernel/acpi/boot.c:90:21: warning: 'acpi_ioapic_lock' defined but not used [-Wunused-variable] +| static DEFINE_MUTEX(acpi_ioapic_lock); +| ^ +| include/linux/mutex_rt.h:27:15: note: in definition of macro 'DEFINE_MUTEX' +| struct mutex mutexname = __MUTEX_INITIALIZER(mutexname) + ^~~~~~~~~ +which is also true (as in non-used) for !RT but the compiler does not +emit a warning. + +Reported-by: kbuild test robot +Signed-off-by: Sebastian Andrzej Siewior +--- + arch/x86/kernel/acpi/boot.c | 2 ++ + 1 file changed, 2 insertions(+) + +--- a/arch/x86/kernel/acpi/boot.c ++++ b/arch/x86/kernel/acpi/boot.c +@@ -87,7 +87,9 @@ static u64 acpi_lapic_addr __initdata = + * ->ioapic_mutex + * ->ioapic_lock + */ ++#ifdef CONFIG_X86_IO_APIC + static DEFINE_MUTEX(acpi_ioapic_lock); ++#endif + + /* -------------------------------------------------------------------------- + Boot-time Configuration 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 bbcaa2839..b4c84d110 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 8bd2eb9f0..6953e36c9 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 bcdc1716c..bdc051eeb 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 98627b591..811491e6e 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 cca9c03c4..74d5fec4f 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 555410366..1f6d29076 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 2c8543a1e..8d1d6f376 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Implement the x86 pieces for lazy preempt. @@ -9,12 +9,12 @@ Signed-off-by: Thomas Gleixner --- arch/x86/Kconfig | 1 + arch/x86/entry/common.c | 4 ++-- - arch/x86/entry/entry_32.S | 16 ++++++++++++++++ + arch/x86/entry/entry_32.S | 17 +++++++++++++++++ arch/x86/entry/entry_64.S | 16 ++++++++++++++++ arch/x86/include/asm/preempt.h | 31 ++++++++++++++++++++++++++++++- arch/x86/include/asm/thread_info.h | 10 ++++++++++ arch/x86/kernel/asm-offsets.c | 2 ++ - 7 files changed, 77 insertions(+), 3 deletions(-) + 7 files changed, 78 insertions(+), 3 deletions(-) --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -48,7 +48,7 @@ Signed-off-by: Thomas Gleixner #ifdef ARCH_RT_DELAYS_SIGNAL_SEND --- a/arch/x86/entry/entry_32.S +++ b/arch/x86/entry/entry_32.S -@@ -271,8 +271,24 @@ END(ret_from_exception) +@@ -271,8 +271,25 @@ END(ret_from_exception) ENTRY(resume_kernel) DISABLE_INTERRUPTS(CLBR_ANY) need_resched: @@ -63,6 +63,7 @@ Signed-off-by: Thomas Gleixner + cmpl $_PREEMPT_ENABLED,PER_CPU_VAR(__preempt_count) + jne restore_all + ++ GET_THREAD_INFO(%ebp) + cmpl $0,TI_preempt_lazy_count(%ebp) # non-zero preempt_lazy_count ? + jnz restore_all + 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 f71b93413..e0f989daf 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 32626bd9f..53827e06a 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.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 933ceecec..78ad2509d 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/4.8/older/patches-4.8.2-rt2.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz Simplifies the separation of anon_rw_semaphores and rw_semaphores for -rt. diff --git a/debian/patches/series b/debian/patches/series index d058b07c9..5d4a0b5e5 100644 --- a/debian/patches/series +++ b/debian/patches/series @@ -114,6 +114,7 @@ bugfix/alpha/alpha-uapi-add-support-for-__sane_userspace_types__.patch bugfix/all/tools-build-remove-bpf-run-time-check-at-build-time.patch bugfix/all/tools-lib-traceevent-fix-use-of-uninitialized-variables.patch bugfix/all/cpupower-bump-soname-version.patch +bugfix/all/cpupower-fix-checks-for-cpu-existence.patch bugfix/all/liblockdep-fix-undefined-symbol-prandom_u32.patch bugfix/all/liblockdep-reduce-max_lock_depth-to-avoid-overflowin.patch bugfix/all/liblockdep-define-the-array_size-macro.patch diff --git a/debian/patches/series-rt b/debian/patches/series-rt index 71b824124..fdb6673bb 100644 --- a/debian/patches/series-rt +++ b/debian/patches/series-rt @@ -35,8 +35,12 @@ features/all/rt/fs-dcache-init-in_lookup_hashtable.patch features/all/rt/iommu-iova-don-t-disable-preempt-around-this_cpu_ptr.patch features/all/rt/iommu-vt-d-don-t-disable-preemption-while-accessing-.patch features/all/rt/lockdep-Quiet-gcc-about-dangerous-__builtin_return_a.patch +features/all/rt/x86-apic-get-rid-of-warning-acpi_ioapic_lock-defined.patch +features/all/rt/rxrpc-remove-unused-static-variables.patch +features/all/rt/kbuild-add-fno-PIE.patch # Wants a different fix for upstream +features/all/rt/NFSv4-replace-seqcount_t-with-a-seqlock_t.patch ############################################################ # Submitted on LKML @@ -244,7 +248,7 @@ features/all/rt/mm-memcontrol-Don-t-call-schedule_work_on-in-preempt.patch features/all/rt/mm-memcontrol-do_not_disable_irq.patch features/all/rt/mm-memcontrol-mem_cgroup_migrate-replace-another-loc.patch features/all/rt/mm-backing-dev-don-t-disable-IRQs-in-wb_congested_pu.patch -features/all/rt/mm-zsmalloc-Use-get-put_cpu_light-in-zs_map_object-z.patch +features/all/rt/mm_zsmalloc_copy_with_get_cpu_var_and_locking.patch # RADIX TREE features/all/rt/radix-tree-rt-aware.patch @@ -547,6 +551,7 @@ features/all/rt/rcu-make-RCU_BOOST-default-on-RT.patch # PREEMPT LAZY features/all/rt/preempt-lazy-support.patch +features/all/rt/ftrace-Fix-trace-header-alignment.patch features/all/rt/x86-preempt-lazy.patch features/all/rt/arm-preempt-lazy-support.patch features/all/rt/powerpc-preempt-lazy-support.patch @@ -558,7 +563,9 @@ features/all/rt/leds-trigger-disable-CPU-trigger-on-RT.patch # DRIVERS features/all/rt/mmci-remove-bogus-irq-save.patch features/all/rt/cpufreq-drop-K8-s-driver-from-beeing-selected.patch +features/all/rt/connector-cn_proc-Protect-send_msg-with-a-local-lock.patch features/all/rt/drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch +features/all/rt/drivers-zram-Don-t-disable-preemption-in-zcomp_strea.patch # I915 features/all/rt/drm-i915-drop-trace_i915_gem_ring_dispatch-onrt.patch diff --git a/debian/rules.d/tools/perf/Makefile b/debian/rules.d/tools/perf/Makefile index 1bf415e08..aa50e42ef 100644 --- a/debian/rules.d/tools/perf/Makefile +++ b/debian/rules.d/tools/perf/Makefile @@ -43,6 +43,11 @@ MAKE_PERF += perfexecdir=lib/perf_$(VERSION)-core plugindir=/usr/lib/traceevent_ # cplus_demangle() can be found in libiberty (LGPL v2.1+). MAKE_PERF += feature-libbfd=0 HAVE_CPLUS_DEMANGLE_SUPPORT=1 +# perf can link against libcrypto if available, but the result is +# undistributable as GPL v2 and OpenSSL are not compatible without +# an explicit exception. Override detection of libcrypto. +MAKE_PERF += NO_LIBCRYPTO=1 + all: ifdef KERNEL_ARCH_PERF # perf changes some default directories depending on whether DESTDIR is @@ -52,9 +57,9 @@ ifdef KERNEL_ARCH_PERF ifeq (,$(filter nodoc,$(DEB_BUILD_PROFILES))) +$(MAKE_PERF) -C $(top_srcdir)/tools/perf/Documentation man VERSION=$(VERSION) endif -# Check that perf didn't get linked against libbfd +# Check that perf didn't get linked against libbfd or libcrypto type ldd - ! ldd $(CURDIR)/perf | grep '\blibbfd' + ! ldd $(CURDIR)/perf | grep -E '\blib(bfd|crypto)' # Check that it includes cplus_demangle from libiberty grep cplus_demangle $(CURDIR)/perf endif diff --git a/debian/templates/control.source.in b/debian/templates/control.source.in index a8bc9c1db..08969a3da 100644 --- a/debian/templates/control.source.in +++ b/debian/templates/control.source.in @@ -4,7 +4,7 @@ Maintainer: Debian Kernel Team Uploaders: Bastian Blank , maximilian attems , Ben Hutchings Standards-Version: 3.9.8 Build-Depends: - debhelper, + debhelper (>= 10.1~), # used to run debian/bin/*.py python3:any, # used by debian/rules.real to prepare the source @@ -54,8 +54,6 @@ Build-Depends: libpci-dev , # used by debian/rules.real to build linux-perf and linux-support dh-python , -# used by debian/rules.real to build hyperv-daemons - dh-systemd , Build-Depends-Indep: # used by debian/rules.real to build linux-source patchutils , diff --git a/debian/templates/control.tools.in b/debian/templates/control.tools.in index 7c95172ab..2dbf58a42 100644 --- a/debian/templates/control.tools.in +++ b/debian/templates/control.tools.in @@ -31,7 +31,7 @@ Package: libcpupower-dev Build-Profiles: Section: libdevel Architecture: linux-any -Depends: ${shlibs:Depends}, ${misc:Depends} +Depends: ${shlibs:Depends}, ${misc:Depends}, libcpupower1 (= ${binary:Version}) Provides: libcpufreq-dev Conflicts: libcpufreq-dev Replaces: libcpufreq-dev @@ -132,7 +132,7 @@ Description: Support daemons for Linux running on Hyper-V #Package: liblockdep-dev #Build-Profiles: #Architecture: linux-any -#Depends: ${shlibs:Depends}, ${misc:Depends}, liblockdep@version@ +#Depends: ${shlibs:Depends}, ${misc:Depends}, liblockdep@version@ (= ${binary:Version}) #Section: libdevel #Multi-Arch: same #Description: Runtime locking correctness validator (development files)