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[rt] Update to 4.18.16-rt9 

* Note added/removed patches
* Resolve conflicts with later changes in 4.18.y
This commit is contained in:
Ben Hutchings 2018-11-21 20:47:25 +00:00
parent 561dac67f3
commit b9457d933c
271 changed files with 364 additions and 385 deletions
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3
debian/changelog vendored
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@ -1223,6 +1223,9 @@ linux (4.18.20-1) UNRELEASED; urgency=medium
[ Ben Hutchings ] [ Ben Hutchings ]
* linux-perf: Fix BPF feature detection * linux-perf: Fix BPF feature detection
* [rt] Update to 4.18.16-rt9:
- Revert "rcu: Use cpus_read_lock() while looking at cpu_online_mask"
- EXP rcu: Revert expedited GP parallelization cleverness
[ Romain Perier ] [ Romain Perier ]
* [rt] Update to 4.18.12-rt7 * [rt] Update to 4.18.12-rt7

2
debian/patches-rt/0001-ARM-at91-add-TCB-registers-definitions.patch vendored
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@ -1,7 +1,7 @@
From: Alexandre Belloni <alexandre.belloni@bootlin.com> From: Alexandre Belloni <alexandre.belloni@bootlin.com>
Date: Wed, 18 Apr 2018 12:51:38 +0200 Date: Wed, 18 Apr 2018 12:51:38 +0200
Subject: [PATCH 1/6] ARM: at91: add TCB registers definitions Subject: [PATCH 1/6] ARM: at91: add TCB registers definitions
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Add registers and bits definitions for the timer counter blocks found on Add registers and bits definitions for the timer counter blocks found on
Atmel ARM SoCs. Atmel ARM SoCs.

2
debian/patches-rt/0001-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch vendored
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@ -2,7 +2,7 @@ From: Peter Zijlstra <peterz@infradead.org>
Date: Mon, 28 May 2018 15:24:20 +0200 Date: Mon, 28 May 2018 15:24:20 +0200
Subject: [PATCH 1/4] Split IRQ-off and zone->lock while freeing pages from PCP Subject: [PATCH 1/4] Split IRQ-off and zone->lock while freeing pages from PCP
list #1 list #1
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Split the IRQ-off section while accessing the PCP list from zone->lock Split the IRQ-off section while accessing the PCP list from zone->lock
while freeing pages. while freeing pages.

2
debian/patches-rt/0001-bdi-use-refcount_t-for-reference-counting-instead-at.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Mon, 7 May 2018 16:51:09 +0200 Date: Mon, 7 May 2018 16:51:09 +0200
Subject: [PATCH] bdi: use refcount_t for reference counting instead atomic_t Subject: [PATCH] bdi: use refcount_t for reference counting instead atomic_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
refcount_t type and corresponding API should be used instead of atomic_t when refcount_t type and corresponding API should be used instead of atomic_t when
the variable is used as a reference counter. This allows to avoid accidental the variable is used as a reference counter. This allows to avoid accidental

2
debian/patches-rt/0001-mm-list_lru-use-list_lru_walk_one-in-list_lru_walk_n.patch vendored
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@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 3 Jul 2018 12:56:19 +0200 Date: Tue, 3 Jul 2018 12:56:19 +0200
Subject: [PATCH 1/4] mm/list_lru: use list_lru_walk_one() in Subject: [PATCH 1/4] mm/list_lru: use list_lru_walk_one() in
list_lru_walk_node() list_lru_walk_node()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
list_lru_walk_node() invokes __list_lru_walk_one() with -1 as the list_lru_walk_node() invokes __list_lru_walk_one() with -1 as the
memcg_idx parameter. The same can be achieved by list_lru_walk_one() and memcg_idx parameter. The same can be achieved by list_lru_walk_one() and

2
debian/patches-rt/0001-mm-workingset-remove-local_irq_disable-from-count_sh.patch vendored
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@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 22 Jun 2018 10:48:51 +0200 Date: Fri, 22 Jun 2018 10:48:51 +0200
Subject: [PATCH 1/3] mm: workingset: remove local_irq_disable() from Subject: [PATCH 1/3] mm: workingset: remove local_irq_disable() from
count_shadow_nodes() count_shadow_nodes()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
In commit 0c7c1bed7e13 ("mm: make counting of list_lru_one::nr_items In commit 0c7c1bed7e13 ("mm: make counting of list_lru_one::nr_items
lockless") the lockless") the

2
debian/patches-rt/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch vendored
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@ -2,7 +2,7 @@ From: Peter Zijlstra <peterz@infradead.org>
Date: Mon, 28 May 2018 15:24:21 +0200 Date: Mon, 28 May 2018 15:24:21 +0200
Subject: [PATCH 2/4] Split IRQ-off and zone->lock while freeing pages from PCP Subject: [PATCH 2/4] Split IRQ-off and zone->lock while freeing pages from PCP
list #2 list #2
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Split the IRQ-off section while accessing the PCP list from zone->lock Split the IRQ-off section while accessing the PCP list from zone->lock
while freeing pages. while freeing pages.

2
debian/patches-rt/0002-clocksource-drivers-Add-a-new-driver-for-the-Atmel-A.patch vendored
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@ -2,7 +2,7 @@ From: Alexandre Belloni <alexandre.belloni@bootlin.com>
Date: Wed, 18 Apr 2018 12:51:39 +0200 Date: Wed, 18 Apr 2018 12:51:39 +0200
Subject: [PATCH 2/6] clocksource/drivers: Add a new driver for the Atmel ARM Subject: [PATCH 2/6] clocksource/drivers: Add a new driver for the Atmel ARM
TC blocks TC blocks
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Add a driver for the Atmel Timer Counter Blocks. This driver provides a Add a driver for the Atmel Timer Counter Blocks. This driver provides a
clocksource and two clockevent devices. clocksource and two clockevent devices.

2
debian/patches-rt/0002-drivers-md-raid5-Use-irqsave-variant-of-atomic_dec_a.patch vendored
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@ -2,7 +2,7 @@ From: Anna-Maria Gleixner <anna-maria@linutronix.de>
Date: Fri, 4 May 2018 17:45:32 +0200 Date: Fri, 4 May 2018 17:45:32 +0200
Subject: [PATCH 2/3] drivers/md/raid5: Use irqsave variant of Subject: [PATCH 2/3] drivers/md/raid5: Use irqsave variant of
atomic_dec_and_lock() atomic_dec_and_lock()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
The irqsave variant of atomic_dec_and_lock handles irqsave/restore when The irqsave variant of atomic_dec_and_lock handles irqsave/restore when
taking/releasing the spin lock. With this variant the call of taking/releasing the spin lock. With this variant the call of

2
debian/patches-rt/0002-mm-list_lru-Move-locking-from-__list_lru_walk_one-to.patch vendored
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@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 3 Jul 2018 13:06:07 +0200 Date: Tue, 3 Jul 2018 13:06:07 +0200
Subject: [PATCH 2/4] mm/list_lru: Move locking from __list_lru_walk_one() to Subject: [PATCH 2/4] mm/list_lru: Move locking from __list_lru_walk_one() to
its caller its caller
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Move the locking inside __list_lru_walk_one() to its caller. This is a Move the locking inside __list_lru_walk_one() to its caller. This is a
preparation step in order to introduce list_lru_walk_one_irq() which preparation step in order to introduce list_lru_walk_one_irq() which

2
debian/patches-rt/0002-mm-workingset-make-shadow_lru_isolate-use-locking-su.patch vendored
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@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 22 Jun 2018 11:43:35 +0200 Date: Fri, 22 Jun 2018 11:43:35 +0200
Subject: [PATCH 2/3] mm: workingset: make shadow_lru_isolate() use locking Subject: [PATCH 2/3] mm: workingset: make shadow_lru_isolate() use locking
suffix suffix
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
shadow_lru_isolate() disables interrupts and acquires a lock. It could shadow_lru_isolate() disables interrupts and acquires a lock. It could
use spin_lock_irq() instead. It also uses local_irq_enable() while it use spin_lock_irq() instead. It also uses local_irq_enable() while it

2
debian/patches-rt/0002-userns-use-refcount_t-for-reference-counting-instead.patch vendored
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@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Mon, 7 May 2018 17:09:42 +0200 Date: Mon, 7 May 2018 17:09:42 +0200
Subject: [PATCH] userns: use refcount_t for reference counting instead Subject: [PATCH] userns: use refcount_t for reference counting instead
atomic_t atomic_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
refcount_t type and corresponding API should be used instead of atomic_t when refcount_t type and corresponding API should be used instead of atomic_t when
the variable is used as a reference counter. This allows to avoid accidental the variable is used as a reference counter. This allows to avoid accidental

2
debian/patches-rt/0003-clocksource-drivers-atmel-pit-make-option-silent.patch vendored
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@ -1,7 +1,7 @@
From: Alexandre Belloni <alexandre.belloni@bootlin.com> From: Alexandre Belloni <alexandre.belloni@bootlin.com>
Date: Wed, 18 Apr 2018 12:51:40 +0200 Date: Wed, 18 Apr 2018 12:51:40 +0200
Subject: [PATCH 3/6] clocksource/drivers: atmel-pit: make option silent Subject: [PATCH 3/6] clocksource/drivers: atmel-pit: make option silent
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
To conform with the other option, make the ATMEL_PIT option silent so it To conform with the other option, make the ATMEL_PIT option silent so it
can be selected from the platform can be selected from the platform

2
debian/patches-rt/0003-drivers-md-raid5-Do-not-disable-irq-on-release_inact.patch vendored
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@ -2,7 +2,7 @@ From: Anna-Maria Gleixner <anna-maria@linutronix.de>
Date: Fri, 4 May 2018 17:45:33 +0200 Date: Fri, 4 May 2018 17:45:33 +0200
Subject: [PATCH 3/3] drivers/md/raid5: Do not disable irq on Subject: [PATCH 3/3] drivers/md/raid5: Do not disable irq on
release_inactive_stripe_list() call release_inactive_stripe_list() call
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
There is no need to invoke release_inactive_stripe_list() with interrupts There is no need to invoke release_inactive_stripe_list() with interrupts
disabled. All call sites, except raid5_release_stripe(), unlock disabled. All call sites, except raid5_release_stripe(), unlock

2
debian/patches-rt/0003-mm-SLxB-change-list_lock-to-raw_spinlock_t.patch vendored
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@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de>
Date: Mon, 28 May 2018 15:24:22 +0200 Date: Mon, 28 May 2018 15:24:22 +0200
Subject: [PATCH 3/4] mm/SLxB: change list_lock to raw_spinlock_t Subject: [PATCH 3/4] mm/SLxB: change list_lock to raw_spinlock_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
The list_lock is used with used with IRQs off on RT. Make it a raw_spinlock_t The list_lock is used with used with IRQs off on RT. Make it a raw_spinlock_t
otherwise the interrupts won't be disabled on -RT. The locking rules remain otherwise the interrupts won't be disabled on -RT. The locking rules remain

2
debian/patches-rt/0003-mm-list_lru-Pass-struct-list_lru_node-as-an-argument.patch vendored
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@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 3 Jul 2018 13:08:56 +0200 Date: Tue, 3 Jul 2018 13:08:56 +0200
Subject: [PATCH 3/4] mm/list_lru: Pass struct list_lru_node as an argument Subject: [PATCH 3/4] mm/list_lru: Pass struct list_lru_node as an argument
__list_lru_walk_one() __list_lru_walk_one()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
__list_lru_walk_one() is invoked with struct list_lru *lru, int nid as __list_lru_walk_one() is invoked with struct list_lru *lru, int nid as
the first two argument. Those two are only used to retrieve struct the first two argument. Those two are only used to retrieve struct

2
debian/patches-rt/0004-ARM-at91-Implement-clocksource-selection.patch vendored
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@ -1,7 +1,7 @@
From: Alexandre Belloni <alexandre.belloni@bootlin.com> From: Alexandre Belloni <alexandre.belloni@bootlin.com>
Date: Wed, 18 Apr 2018 12:51:41 +0200 Date: Wed, 18 Apr 2018 12:51:41 +0200
Subject: [PATCH 4/6] ARM: at91: Implement clocksource selection Subject: [PATCH 4/6] ARM: at91: Implement clocksource selection
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Allow selecting and unselecting the PIT clocksource driver so it doesn't Allow selecting and unselecting the PIT clocksource driver so it doesn't
have to be compile when unused. have to be compile when unused.

2
debian/patches-rt/0004-mm-SLUB-delay-giving-back-empty-slubs-to-IRQ-enabled.patch vendored
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@ -2,7 +2,7 @@ From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 21 Jun 2018 17:29:19 +0200 Date: Thu, 21 Jun 2018 17:29:19 +0200
Subject: [PATCH 4/4] mm/SLUB: delay giving back empty slubs to IRQ enabled Subject: [PATCH 4/4] mm/SLUB: delay giving back empty slubs to IRQ enabled
regions regions
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
__free_slab() is invoked with disabled interrupts which increases the __free_slab() is invoked with disabled interrupts which increases the
irq-off time while __free_pages() is doing the work. irq-off time while __free_pages() is doing the work.

2
debian/patches-rt/0004-mm-list_lru-Introduce-list_lru_shrink_walk_irq.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 3 Jul 2018 13:17:27 +0200 Date: Tue, 3 Jul 2018 13:17:27 +0200
Subject: [PATCH 4/4] mm/list_lru: Introduce list_lru_shrink_walk_irq() Subject: [PATCH 4/4] mm/list_lru: Introduce list_lru_shrink_walk_irq()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Provide list_lru_shrink_walk_irq() and let it behave like Provide list_lru_shrink_walk_irq() and let it behave like
list_lru_walk_one() except that it locks the spinlock with list_lru_walk_one() except that it locks the spinlock with

2
debian/patches-rt/0005-ARM-configs-at91-use-new-TCB-timer-driver.patch vendored
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@ -1,7 +1,7 @@
From: Alexandre Belloni <alexandre.belloni@bootlin.com> From: Alexandre Belloni <alexandre.belloni@bootlin.com>
Date: Wed, 18 Apr 2018 12:51:42 +0200 Date: Wed, 18 Apr 2018 12:51:42 +0200
Subject: [PATCH 5/6] ARM: configs: at91: use new TCB timer driver Subject: [PATCH 5/6] ARM: configs: at91: use new TCB timer driver
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Unselecting ATMEL_TCLIB switches the TCB timer driver from tcb_clksrc to Unselecting ATMEL_TCLIB switches the TCB timer driver from tcb_clksrc to
timer-atmel-tcb. timer-atmel-tcb.

2
debian/patches-rt/0005-bdi-Use-irqsave-variant-of-refcount_dec_and_lock.patch vendored
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@ -1,7 +1,7 @@
From: Anna-Maria Gleixner <anna-maria@linutronix.de> From: Anna-Maria Gleixner <anna-maria@linutronix.de>
Date: Wed, 4 Apr 2018 11:43:56 +0200 Date: Wed, 4 Apr 2018 11:43:56 +0200
Subject: [PATCH] bdi: Use irqsave variant of refcount_dec_and_lock() Subject: [PATCH] bdi: Use irqsave variant of refcount_dec_and_lock()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
The irqsave variant of refcount_dec_and_lock handles irqsave/restore when The irqsave variant of refcount_dec_and_lock handles irqsave/restore when
taking/releasing the spin lock. With this variant the call of taking/releasing the spin lock. With this variant the call of

2
debian/patches-rt/0006-ARM-configs-at91-unselect-PIT.patch vendored
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@ -1,7 +1,7 @@
From: Alexandre Belloni <alexandre.belloni@bootlin.com> From: Alexandre Belloni <alexandre.belloni@bootlin.com>
Date: Wed, 18 Apr 2018 12:51:43 +0200 Date: Wed, 18 Apr 2018 12:51:43 +0200
Subject: [PATCH 6/6] ARM: configs: at91: unselect PIT Subject: [PATCH 6/6] ARM: configs: at91: unselect PIT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
The PIT is not required anymore to successfully boot and may actually harm The PIT is not required anymore to successfully boot and may actually harm
in case preempt-rt is used because the PIT interrupt is shared. in case preempt-rt is used because the PIT interrupt is shared.

2
debian/patches-rt/0006-userns-Use-irqsave-variant-of-refcount_dec_and_lock.patch vendored
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@ -1,7 +1,7 @@
From: Anna-Maria Gleixner <anna-maria@linutronix.de> From: Anna-Maria Gleixner <anna-maria@linutronix.de>
Date: Wed, 4 Apr 2018 11:43:57 +0200 Date: Wed, 4 Apr 2018 11:43:57 +0200
Subject: [PATCH] userns: Use irqsave variant of refcount_dec_and_lock() Subject: [PATCH] userns: Use irqsave variant of refcount_dec_and_lock()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
The irqsave variant of refcount_dec_and_lock handles irqsave/restore when The irqsave variant of refcount_dec_and_lock handles irqsave/restore when
taking/releasing the spin lock. With this variant the call of taking/releasing the spin lock. With this variant the call of

2
debian/patches-rt/ARM-enable-irq-in-translation-section-permission-fau.patch vendored
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@ -1,7 +1,7 @@
From: "Yadi.hu" <yadi.hu@windriver.com> From: "Yadi.hu" <yadi.hu@windriver.com>
Date: Wed, 10 Dec 2014 10:32:09 +0800 Date: Wed, 10 Dec 2014 10:32:09 +0800
Subject: ARM: enable irq in translation/section permission fault handlers Subject: ARM: enable irq in translation/section permission fault handlers
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Probably happens on all ARM, with Probably happens on all ARM, with
CONFIG_PREEMPT_RT_FULL CONFIG_PREEMPT_RT_FULL

2
debian/patches-rt/Drivers-hv-vmbus-include-header-for-get_irq_regs.patch vendored
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@ -4,7 +4,7 @@ Subject: [PATCH] Drivers: hv: vmbus: include header for get_irq_regs()
MIME-Version: 1.0 MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8 Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit Content-Transfer-Encoding: 8bit
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
On !RT the header file get_irq_regs() gets pulled in via other header files. On On !RT the header file get_irq_regs() gets pulled in via other header files. On
RT it does not and the build fails: RT it does not and the build fails:

45
debian/patches-rt/EXP-rcu-Revert-expedited-GP-parallelization-cleverne.patch vendored Normal file
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@ -0,0 +1,45 @@
From 53d4eed5325b9a26985c3d4f017d94919eb4ac89 Mon Sep 17 00:00:00 2001
From: Paul E. McKenney <paulmck@linux.ibm.com>
Date: Mon, 29 Oct 2018 11:53:01 +0100
Subject: [PATCH] EXP rcu: Revert expedited GP parallelization cleverness
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
(Commit 258ba8e089db23f760139266c232f01bad73f85c from linux-rcu)
This commit reverts a series of commits starting with fcc635436501 ("rcu:
Make expedited GPs handle CPU 0 being offline") and its successors, thus
queueing each rcu_node structure's expedited grace-period initialization
work on the first CPU of that rcu_node structure.
Suggested-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
kernel/rcu/tree_exp.h | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)
--- a/kernel/rcu/tree_exp.h
+++ b/kernel/rcu/tree_exp.h
@@ -472,7 +472,6 @@ static void sync_rcu_exp_select_node_cpu
static void sync_rcu_exp_select_cpus(struct rcu_state *rsp,
smp_call_func_t func)
{
- int cpu;
struct rcu_node *rnp;
trace_rcu_exp_grace_period(rsp->name, rcu_exp_gp_seq_endval(rsp), TPS("reset"));
@@ -493,13 +492,7 @@ static void sync_rcu_exp_select_cpus(str
continue;
}
INIT_WORK(&rnp->rew.rew_work, sync_rcu_exp_select_node_cpus);
- preempt_disable();
- cpu = cpumask_next(rnp->grplo - 1, cpu_online_mask);
- /* If all offline, queue the work on an unbound CPU. */
- if (unlikely(cpu > rnp->grphi))
- cpu = WORK_CPU_UNBOUND;
- queue_work_on(cpu, rcu_par_gp_wq, &rnp->rew.rew_work);
- preempt_enable();
+ queue_work_on(rnp->grplo, rcu_par_gp_wq, &rnp->rew.rew_work);
rnp->exp_need_flush = true;
}

2
debian/patches-rt/HACK-printk-drop-the-logbuf_lock-more-often.patch vendored
View File

@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 21 Mar 2013 19:01:05 +0100 Date: Thu, 21 Mar 2013 19:01:05 +0100
Subject: printk: Drop the logbuf_lock more often Subject: printk: Drop the logbuf_lock more often
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
The lock is hold with irgs off. The latency drops 500us+ on my arm bugs 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. with a "full" buffer after executing "dmesg" on the shell.

2
debian/patches-rt/KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch vendored
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@ -1,7 +1,7 @@
From: Josh Cartwright <joshc@ni.com> From: Josh Cartwright <joshc@ni.com>
Date: Thu, 11 Feb 2016 11:54:01 -0600 Date: Thu, 11 Feb 2016 11:54:01 -0600
Subject: KVM: arm/arm64: downgrade preempt_disable()d region to migrate_disable() Subject: KVM: arm/arm64: downgrade preempt_disable()d region to migrate_disable()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
kvm_arch_vcpu_ioctl_run() disables the use of preemption when updating 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 the vgic and timer states to prevent the calling task from migrating to

2
debian/patches-rt/NFSv4-replace-seqcount_t-with-a-seqlock_t.patch vendored
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@ -5,7 +5,7 @@ Cc: Anna Schumaker <anna.schumaker@netapp.com>,
linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org,
tglx@linutronix.de tglx@linutronix.de
Subject: NFSv4: replace seqcount_t with a seqlock_t Subject: NFSv4: replace seqcount_t with a seqlock_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
The raw_write_seqcount_begin() in nfs4_reclaim_open_state() bugs me 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 because it maps to preempt_disable() in -RT which I can't have at this

2
debian/patches-rt/SCSI-libsas-remove-irq-save-in-sas_ata_qc_issue.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 12 Apr 2018 09:16:22 +0200 Date: Thu, 12 Apr 2018 09:16:22 +0200
Subject: [PATCH] [SCSI] libsas: remove irq save in sas_ata_qc_issue() Subject: [PATCH] [SCSI] libsas: remove irq save in sas_ata_qc_issue()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
[ upstream commit 2da11d4262639dc0e2fabc6a70886db57af25c43 ] [ upstream commit 2da11d4262639dc0e2fabc6a70886db57af25c43 ]

2
debian/patches-rt/SCSI-qla2xxx-remove-irq-save-in-qla2x00_poll.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 12 Apr 2018 09:55:25 +0200 Date: Thu, 12 Apr 2018 09:55:25 +0200
Subject: [PATCH] [SCSI] qla2xxx: remove irq save in qla2x00_poll() Subject: [PATCH] [SCSI] qla2xxx: remove irq save in qla2x00_poll()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
[ upstream commit b3a8aa90c46095cbad454eb068bfb5a8eb56d4e3 ] [ upstream commit b3a8aa90c46095cbad454eb068bfb5a8eb56d4e3 ]

2
debian/patches-rt/add_migrate_disable.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat, 27 May 2017 19:02:06 +0200 Date: Sat, 27 May 2017 19:02:06 +0200
Subject: kernel/sched/core: add migrate_disable() Subject: kernel/sched/core: add migrate_disable()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
--- ---
include/linux/preempt.h | 23 ++++++++ include/linux/preempt.h | 23 ++++++++

2
debian/patches-rt/apparmor-use-a-locallock-instead-preempt_disable.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 11 Oct 2017 17:43:49 +0200 Date: Wed, 11 Oct 2017 17:43:49 +0200
Subject: apparmor: use a locallock instead preempt_disable() Subject: apparmor: use a locallock instead preempt_disable()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
get_buffers() disables preemption which acts as a lock for the per-CPU get_buffers() disables preemption which acts as a lock for the per-CPU
variable. Since we can't disable preemption here on RT, a local_lock is variable. Since we can't disable preemption here on RT, a local_lock is

2
debian/patches-rt/arch-arm64-Add-lazy-preempt-support.patch vendored
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@ -1,7 +1,7 @@
From: Anders Roxell <anders.roxell@linaro.org> From: Anders Roxell <anders.roxell@linaro.org>
Date: Thu, 14 May 2015 17:52:17 +0200 Date: Thu, 14 May 2015 17:52:17 +0200
Subject: arch/arm64: Add lazy preempt support Subject: arch/arm64: Add lazy preempt support
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
arm64 is missing support for PREEMPT_RT. The main feature which is arm64 is missing support for PREEMPT_RT. The main feature which is
lacking is support for lazy preemption. The arch-specific entry code, lacking is support for lazy preemption. The arch-specific entry code,

2
debian/patches-rt/arm-convert-boot-lock-to-raw.patch vendored
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@ -1,7 +1,7 @@
From: Frank Rowand <frank.rowand@am.sony.com> From: Frank Rowand <frank.rowand@am.sony.com>
Date: Mon, 19 Sep 2011 14:51:14 -0700 Date: Mon, 19 Sep 2011 14:51:14 -0700
Subject: arm: Convert arm boot_lock to raw Subject: arm: Convert arm boot_lock to raw
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
The arm boot_lock is used by the secondary processor startup code. The locking 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. task is the idle thread, which has idle->sched_class == &idle_sched_class.

12
debian/patches-rt/arm-disable-NEON-in-kernel-mode.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 1 Dec 2017 10:42:03 +0100 Date: Fri, 1 Dec 2017 10:42:03 +0100
Subject: [PATCH] arm*: disable NEON in kernel mode Subject: [PATCH] arm*: disable NEON in kernel mode
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
NEON in kernel mode is used by the crypto algorithms and raid6 code. NEON in kernel mode is used by the crypto algorithms and raid6 code.
While the raid6 code looks okay, the crypto algorithms do not: NEON While the raid6 code looks okay, the crypto algorithms do not: NEON
@ -13,6 +13,7 @@ stay on due to possible EFI callbacks so here I disable each algorithm.
Cc: stable-rt@vger.kernel.org Cc: stable-rt@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
[bwh: Forward-ported to 4.18.20: CONFIG_CRYPTO_SPECK_NEON no longer exists]
--- ---
arch/arm/Kconfig | 2 +- arch/arm/Kconfig | 2 +-
arch/arm64/crypto/Kconfig | 30 +++++++++++++++--------------- arch/arm64/crypto/Kconfig | 30 +++++++++++++++---------------
@ -142,15 +143,6 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
select CRYPTO_BLKCIPHER select CRYPTO_BLKCIPHER
select CRYPTO_AES_ARM64_NEON_BLK select CRYPTO_AES_ARM64_NEON_BLK
select CRYPTO_AES_ARM64 select CRYPTO_AES_ARM64
@@ -121,7 +121,7 @@ config CRYPTO_AES_ARM64_BS
config CRYPTO_SPECK_NEON
tristate "NEON accelerated Speck cipher algorithms"
- depends on KERNEL_MODE_NEON
+ depends on KERNEL_MODE_NEON && !PREEMPT_RT_BASE
select CRYPTO_BLKCIPHER
select CRYPTO_SPECK
--- a/arch/arm64/crypto/crc32-ce-glue.c --- a/arch/arm64/crypto/crc32-ce-glue.c
+++ b/arch/arm64/crypto/crc32-ce-glue.c +++ b/arch/arm64/crypto/crc32-ce-glue.c
@@ -208,7 +208,8 @@ static struct shash_alg crc32_pmull_algs @@ -208,7 +208,8 @@ static struct shash_alg crc32_pmull_algs

2
debian/patches-rt/arm-enable-highmem-for-rt.patch vendored
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@ -1,7 +1,7 @@
Subject: arm: Enable highmem for rt Subject: arm: Enable highmem for rt
From: Thomas Gleixner <tglx@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 13 Feb 2013 11:03:11 +0100 Date: Wed, 13 Feb 2013 11:03:11 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
fixup highmem for ARM. fixup highmem for ARM.

2
debian/patches-rt/arm-highmem-flush-tlb-on-unmap.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Mon, 11 Mar 2013 21:37:27 +0100 Date: Mon, 11 Mar 2013 21:37:27 +0100
Subject: arm/highmem: Flush tlb on unmap Subject: arm/highmem: Flush tlb on unmap
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
The tlb should be flushed on unmap and thus make the mapping entry 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 invalid. This is only done in the non-debug case which does not look

2
debian/patches-rt/arm-include-definition-for-cpumask_t.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 22 Dec 2016 17:28:33 +0100 Date: Thu, 22 Dec 2016 17:28:33 +0100
Subject: [PATCH] arm: include definition for cpumask_t Subject: [PATCH] arm: include definition for cpumask_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
This definition gets pulled in by other files. With the (later) split of This definition gets pulled in by other files. With the (later) split of
RCU and spinlock.h it won't compile anymore. RCU and spinlock.h it won't compile anymore.

2
debian/patches-rt/arm-kprobe-replace-patch_lock-to-raw-lock.patch vendored
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@ -1,7 +1,7 @@
From: Yang Shi <yang.shi@linaro.org> From: Yang Shi <yang.shi@linaro.org>
Date: Thu, 10 Nov 2016 16:17:55 -0800 Date: Thu, 10 Nov 2016 16:17:55 -0800
Subject: [PATCH] arm: kprobe: replace patch_lock to raw lock Subject: [PATCH] arm: kprobe: replace patch_lock to raw lock
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
When running kprobe on -rt kernel, the below bug is caught: When running kprobe on -rt kernel, the below bug is caught:

2
debian/patches-rt/arm-preempt-lazy-support.patch vendored
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@ -1,7 +1,7 @@
Subject: arm: Add support for lazy preemption Subject: arm: Add support for lazy preemption
From: Thomas Gleixner <tglx@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 31 Oct 2012 12:04:11 +0100 Date: Wed, 31 Oct 2012 12:04:11 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Implement the arm pieces for lazy preempt. Implement the arm pieces for lazy preempt.

2
debian/patches-rt/arm-unwind-use_raw_lock.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 20 Sep 2013 14:31:54 +0200 Date: Fri, 20 Sep 2013 14:31:54 +0200
Subject: arm/unwind: use a raw_spin_lock Subject: arm/unwind: use a raw_spin_lock
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Mostly unwind is done with irqs enabled however SLUB may call it with Mostly unwind is done with irqs enabled however SLUB may call it with
irqs disabled while creating a new SLUB cache. irqs disabled while creating a new SLUB cache.

2
debian/patches-rt/arm64-KVM-compute_layout-before-altenates-are-applie.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 26 Jul 2018 09:13:42 +0200 Date: Thu, 26 Jul 2018 09:13:42 +0200
Subject: [PATCH] arm64: KVM: compute_layout before altenates are applied Subject: [PATCH] arm64: KVM: compute_layout before altenates are applied
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
compute_layout() is invoked as part of an alternative fixup under compute_layout() is invoked as part of an alternative fixup under
stop_machine() and needs a sleeping lock as part of get_random_long(). stop_machine() and needs a sleeping lock as part of get_random_long().

2
debian/patches-rt/arm64-fpsimd-use-preemp_disable-in-addition-to-local.patch vendored
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@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 25 Jul 2018 14:02:38 +0200 Date: Wed, 25 Jul 2018 14:02:38 +0200
Subject: [PATCH] arm64: fpsimd: use preemp_disable in addition to Subject: [PATCH] arm64: fpsimd: use preemp_disable in addition to
local_bh_disable() local_bh_disable()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
In v4.16-RT I noticed a number of warnings from task_fpsimd_load(). The In v4.16-RT I noticed a number of warnings from task_fpsimd_load(). The
code disables BH and expects that it is not preemptible. On -RT the code disables BH and expects that it is not preemptible. On -RT the

2
debian/patches-rt/at91_dont_enable_disable_clock.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 09 Mar 2016 10:51:06 +0100 Date: Wed, 09 Mar 2016 10:51:06 +0100
Subject: arm: at91: do not disable/enable clocks in a row Subject: arm: at91: do not disable/enable clocks in a row
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Currently the driver will disable the clock and enable it one line later Currently the driver will disable the clock and enable it one line later
if it is switching from periodic mode into one shot. if it is switching from periodic mode into one shot.

2
debian/patches-rt/block-blk-mq-move-blk_queue_usage_counter_release-in.patch vendored
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@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 13 Mar 2018 13:49:16 +0100 Date: Tue, 13 Mar 2018 13:49:16 +0100
Subject: [PATCH] block: blk-mq: move blk_queue_usage_counter_release() Subject: [PATCH] block: blk-mq: move blk_queue_usage_counter_release()
into process context into process context
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
| BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:914 | 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 | in_atomic(): 1, irqs_disabled(): 0, pid: 255, name: kworker/u257:6

2
debian/patches-rt/block-mq-don-t-complete-requests-via-IPI.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 29 Jan 2015 15:10:08 +0100 Date: Thu, 29 Jan 2015 15:10:08 +0100
Subject: block/mq: don't complete requests via IPI Subject: block/mq: don't complete requests via IPI
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
The IPI runs in hardirq context and there are sleeping locks. This patch The IPI runs in hardirq context and there are sleeping locks. This patch
moves the completion into a workqueue. moves the completion into a workqueue.

2
debian/patches-rt/block-mq-drop-preempt-disable.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 14 Jul 2015 14:26:34 +0200 Date: Tue, 14 Jul 2015 14:26:34 +0200
Subject: block/mq: do not invoke preempt_disable() Subject: block/mq: do not invoke preempt_disable()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
preempt_disable() and get_cpu() don't play well together with the sleeping preempt_disable() and get_cpu() don't play well together with the sleeping
locks it tries to allocate later. locks it tries to allocate later.

2
debian/patches-rt/block-mq-use-cpu_light.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 9 Apr 2014 10:37:23 +0200 Date: Wed, 9 Apr 2014 10:37:23 +0200
Subject: block: mq: use cpu_light() Subject: block: mq: use cpu_light()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
there is a might sleep splat because get_cpu() disables preemption and 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(). later we grab a lock. As a workaround for this we use get_cpu_light().

2
debian/patches-rt/block-use-cpu-chill.patch vendored
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@ -1,7 +1,7 @@
Subject: block: Use cpu_chill() for retry loops Subject: block: Use cpu_chill() for retry loops
From: Thomas Gleixner <tglx@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 20 Dec 2012 18:28:26 +0100 Date: Thu, 20 Dec 2012 18:28:26 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Retry loops on RT might loop forever when the modifying side was Retry loops on RT might loop forever when the modifying side was
preempted. Steven also observed a live lock when there was a preempted. Steven also observed a live lock when there was a

8
debian/patches-rt/cgroup-tracing-Move-taking-of-spin-lock-out-of-trace.patch vendored
View File

@ -2,7 +2,7 @@ From: "Steven Rostedt (VMware)" <rostedt@goodmis.org>
Date: Mon, 9 Jul 2018 17:48:54 -0400 Date: Mon, 9 Jul 2018 17:48:54 -0400
Subject: [PATCH] cgroup/tracing: Move taking of spin lock out of trace event Subject: [PATCH] cgroup/tracing: Move taking of spin lock out of trace event
handlers handlers
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
[ Upstream commit e4f8d81c738db6d3ffdabfb8329aa2feaa310699 ] [ Upstream commit e4f8d81c738db6d3ffdabfb8329aa2feaa310699 ]
@ -240,7 +240,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
return ret; return ret;
} }
@@ -4634,7 +4637,7 @@ static void css_release_work_fn(struct w @@ -4641,7 +4644,7 @@ static void css_release_work_fn(struct w
struct cgroup *tcgrp; struct cgroup *tcgrp;
/* cgroup release path */ /* cgroup release path */
@ -249,7 +249,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
if (cgroup_on_dfl(cgrp)) if (cgroup_on_dfl(cgrp))
cgroup_rstat_flush(cgrp); cgroup_rstat_flush(cgrp);
@@ -4977,7 +4980,7 @@ int cgroup_mkdir(struct kernfs_node *par @@ -4984,7 +4987,7 @@ int cgroup_mkdir(struct kernfs_node *par
if (ret) if (ret)
goto out_destroy; goto out_destroy;
@ -258,7 +258,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
/* let's create and online css's */ /* let's create and online css's */
kernfs_activate(kn); kernfs_activate(kn);
@@ -5165,9 +5168,8 @@ int cgroup_rmdir(struct kernfs_node *kn) @@ -5172,9 +5175,8 @@ int cgroup_rmdir(struct kernfs_node *kn)
return 0; return 0;
ret = cgroup_destroy_locked(cgrp); ret = cgroup_destroy_locked(cgrp);

2
debian/patches-rt/cgroup-use-irqsave-in-cgroup_rstat_flush_locked.patch vendored
View File

@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 3 Jul 2018 18:19:48 +0200 Date: Tue, 3 Jul 2018 18:19:48 +0200
Subject: [PATCH] cgroup: use irqsave in cgroup_rstat_flush_locked() Subject: [PATCH] cgroup: use irqsave in cgroup_rstat_flush_locked()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
All callers of cgroup_rstat_flush_locked() acquire cgroup_rstat_lock All callers of cgroup_rstat_flush_locked() acquire cgroup_rstat_lock
either with spin_lock_irq() or spin_lock_irqsave(). either with spin_lock_irq() or spin_lock_irqsave().

8
debian/patches-rt/cgroups-use-simple-wait-in-css_release.patch vendored
View File

@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 13 Feb 2015 15:52:24 +0100 Date: Fri, 13 Feb 2015 15:52:24 +0100
Subject: cgroups: use simple wait in css_release() Subject: cgroups: use simple wait in css_release()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
To avoid: To avoid:
|BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:914 |BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:914
@ -53,7 +53,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
/* /*
--- a/kernel/cgroup/cgroup.c --- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c
@@ -4611,10 +4611,10 @@ static void css_free_rwork_fn(struct wor @@ -4618,10 +4618,10 @@ static void css_free_rwork_fn(struct wor
} }
} }
@ -66,7 +66,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
struct cgroup_subsys *ss = css->ss; struct cgroup_subsys *ss = css->ss;
struct cgroup *cgrp = css->cgroup; struct cgroup *cgrp = css->cgroup;
@@ -4674,8 +4674,8 @@ static void css_release(struct percpu_re @@ -4681,8 +4681,8 @@ static void css_release(struct percpu_re
struct cgroup_subsys_state *css = struct cgroup_subsys_state *css =
container_of(ref, struct cgroup_subsys_state, refcnt); container_of(ref, struct cgroup_subsys_state, refcnt);
@ -77,7 +77,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
} }
static void init_and_link_css(struct cgroup_subsys_state *css, static void init_and_link_css(struct cgroup_subsys_state *css,
@@ -5397,6 +5397,7 @@ static int __init cgroup_wq_init(void) @@ -5404,6 +5404,7 @@ static int __init cgroup_wq_init(void)
*/ */
cgroup_destroy_wq = alloc_workqueue("cgroup_destroy", 0, 1); cgroup_destroy_wq = alloc_workqueue("cgroup_destroy", 0, 1);
BUG_ON(!cgroup_destroy_wq); BUG_ON(!cgroup_destroy_wq);

2
debian/patches-rt/clocksource-tclib-allow-higher-clockrates.patch vendored
View File

@ -1,7 +1,7 @@
From: Benedikt Spranger <b.spranger@linutronix.de> From: Benedikt Spranger <b.spranger@linutronix.de>
Date: Mon, 8 Mar 2010 18:57:04 +0100 Date: Mon, 8 Mar 2010 18:57:04 +0100
Subject: clocksource: TCLIB: Allow higher clock rates for clock events Subject: clocksource: TCLIB: Allow higher clock rates for clock events
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
As default the TCLIB uses the 32KiHz base clock rate for clock events. As default the TCLIB uses the 32KiHz base clock rate for clock events.
Add a compile time selection to allow higher clock resulution. Add a compile time selection to allow higher clock resulution.

2
debian/patches-rt/completion-use-simple-wait-queues.patch vendored
View File

@ -1,7 +1,7 @@
Subject: completion: Use simple wait queues Subject: completion: Use simple wait queues
From: Thomas Gleixner <tglx@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 11 Jan 2013 11:23:51 +0100 Date: Fri, 11 Jan 2013 11:23:51 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Completions have no long lasting callbacks and therefor do not need Completions have no long lasting callbacks and therefor do not need
the complex waitqueue variant. Use simple waitqueues which reduces the the complex waitqueue variant. Use simple waitqueues which reduces the

2
debian/patches-rt/cond-resched-lock-rt-tweak.patch vendored
View File

@ -1,7 +1,7 @@
Subject: sched: Use the proper LOCK_OFFSET for cond_resched() Subject: sched: Use the proper LOCK_OFFSET for cond_resched()
From: Thomas Gleixner <tglx@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 17 Jul 2011 22:51:33 +0200 Date: Sun, 17 Jul 2011 22:51:33 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
RT does not increment preempt count when a 'sleeping' spinlock is RT does not increment preempt count when a 'sleeping' spinlock is
locked. Update PREEMPT_LOCK_OFFSET for that case. locked. Update PREEMPT_LOCK_OFFSET for that case.

2
debian/patches-rt/connector-cn_proc-Protect-send_msg-with-a-local-lock.patch vendored
View File

@ -2,7 +2,7 @@ From: Mike Galbraith <umgwanakikbuti@gmail.com>
Date: Sun, 16 Oct 2016 05:11:54 +0200 Date: Sun, 16 Oct 2016 05:11:54 +0200
Subject: [PATCH] connector/cn_proc: Protect send_msg() with a local lock Subject: [PATCH] connector/cn_proc: Protect send_msg() with a local lock
on RT on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:931 |BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:931
|in_atomic(): 1, irqs_disabled(): 0, pid: 31807, name: sleep |in_atomic(): 1, irqs_disabled(): 0, pid: 31807, name: sleep

2
debian/patches-rt/cpu-hotplug--Implement-CPU-pinning.patch vendored
View File

@ -1,7 +1,7 @@
Subject: cpu/hotplug: Implement CPU pinning Subject: cpu/hotplug: Implement CPU pinning
From: Thomas Gleixner <tglx@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 19 Jul 2017 17:31:20 +0200 Date: Wed, 19 Jul 2017 17:31:20 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
--- ---

2
debian/patches-rt/cpufreq-drop-K8-s-driver-from-beeing-selected.patch vendored
View File

@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 9 Apr 2015 15:23:01 +0200 Date: Thu, 9 Apr 2015 15:23:01 +0200
Subject: cpufreq: drop K8's driver from beeing selected Subject: cpufreq: drop K8's driver from beeing selected
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Ralf posted a picture of a backtrace from Ralf posted a picture of a backtrace from

2
debian/patches-rt/cpumask-disable-offstack-on-rt.patch vendored
View File

@ -1,7 +1,7 @@
Subject: cpumask: Disable CONFIG_CPUMASK_OFFSTACK for RT Subject: cpumask: Disable CONFIG_CPUMASK_OFFSTACK for RT
From: Thomas Gleixner <tglx@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 14 Dec 2011 01:03:49 +0100 Date: Wed, 14 Dec 2011 01:03:49 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
There are "valid" GFP_ATOMIC allocations such as There are "valid" GFP_ATOMIC allocations such as

2
debian/patches-rt/cpuset-Convert-callback_lock-to-raw_spinlock_t.patch vendored
View File

@ -1,7 +1,7 @@
From: Mike Galbraith <efault@gmx.de> From: Mike Galbraith <efault@gmx.de>
Date: Sun, 8 Jan 2017 09:32:25 +0100 Date: Sun, 8 Jan 2017 09:32:25 +0100
Subject: [PATCH] cpuset: Convert callback_lock to raw_spinlock_t Subject: [PATCH] cpuset: Convert callback_lock to raw_spinlock_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
The two commits below add up to a cpuset might_sleep() splat for RT: The two commits below add up to a cpuset might_sleep() splat for RT:

2
debian/patches-rt/crypto-Reduce-preempt-disabled-regions-more-algos.patch vendored
View File

@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 21 Feb 2014 17:24:04 +0100 Date: Fri, 21 Feb 2014 17:24:04 +0100
Subject: crypto: Reduce preempt disabled regions, more algos Subject: crypto: Reduce preempt disabled regions, more algos
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Don Estabrook reported Don Estabrook reported
| kernel: WARNING: CPU: 2 PID: 858 at kernel/sched/core.c:2428 migrate_disable+0xed/0x100() | kernel: WARNING: CPU: 2 PID: 858 at kernel/sched/core.c:2428 migrate_disable+0xed/0x100()

2
debian/patches-rt/crypto-cryptd-add-a-lock-instead-preempt_disable-loc.patch vendored
View File

@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 26 Jul 2018 18:52:00 +0200 Date: Thu, 26 Jul 2018 18:52:00 +0200
Subject: [PATCH] crypto: cryptd - add a lock instead Subject: [PATCH] crypto: cryptd - add a lock instead
preempt_disable/local_bh_disable preempt_disable/local_bh_disable
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
cryptd has a per-CPU lock which protected with local_bh_disable() and cryptd has a per-CPU lock which protected with local_bh_disable() and
preempt_disable(). preempt_disable().

2
debian/patches-rt/crypto-limit-more-FPU-enabled-sections.patch vendored
View File

@ -4,7 +4,7 @@ Subject: [PATCH] crypto: limit more FPU-enabled sections
MIME-Version: 1.0 MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8 Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit Content-Transfer-Encoding: 8bit
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Those crypto drivers use SSE/AVX/… for their crypto work and in order to Those crypto drivers use SSE/AVX/… for their crypto work and in order to
do so in kernel they need to enable the "FPU" in kernel mode which do so in kernel they need to enable the "FPU" in kernel mode which

2
debian/patches-rt/crypto-scompress-serialize-RT-percpu-scratch-buffer-.patch vendored
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@ -2,7 +2,7 @@ From: Mike Galbraith <efault@gmx.de>
Date: Wed, 11 Jul 2018 17:14:47 +0200 Date: Wed, 11 Jul 2018 17:14:47 +0200
Subject: [PATCH] crypto: scompress - serialize RT percpu scratch buffer Subject: [PATCH] crypto: scompress - serialize RT percpu scratch buffer
access with a local lock access with a local lock
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
| BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:974 | BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:974
| in_atomic(): 1, irqs_disabled(): 0, pid: 1401, name: cryptomgr_test | in_atomic(): 1, irqs_disabled(): 0, pid: 1401, name: cryptomgr_test

2
debian/patches-rt/debugobjects-rt.patch vendored
View File

@ -1,7 +1,7 @@
Subject: debugobjects: Make RT aware Subject: debugobjects: Make RT aware
From: Thomas Gleixner <tglx@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 17 Jul 2011 21:41:35 +0200 Date: Sun, 17 Jul 2011 21:41:35 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Avoid filling the pool / allocating memory with irqs off(). Avoid filling the pool / allocating memory with irqs off().

2
debian/patches-rt/dm-rq-remove-BUG_ON-irqs_disabled-check.patch vendored
View File

@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 27 Mar 2018 16:24:15 +0200 Date: Tue, 27 Mar 2018 16:24:15 +0200
Subject: [PATCH] dm rq: remove BUG_ON(!irqs_disabled) check Subject: [PATCH] dm rq: remove BUG_ON(!irqs_disabled) check
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
In commit 052189a2ec95 ("dm: remove superfluous irq disablement in In commit 052189a2ec95 ("dm: remove superfluous irq disablement in
dm_request_fn") the spin_lock_irq() was replaced with spin_lock() + a dm_request_fn") the spin_lock_irq() was replaced with spin_lock() + a

2
debian/patches-rt/drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch vendored
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@ -2,7 +2,7 @@ From: Mike Galbraith <umgwanakikbuti@gmail.com>
Date: Thu, 31 Mar 2016 04:08:28 +0200 Date: Thu, 31 Mar 2016 04:08:28 +0200
Subject: [PATCH] drivers/block/zram: Replace bit spinlocks with rtmutex Subject: [PATCH] drivers/block/zram: Replace bit spinlocks with rtmutex
for -rt for -rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
They're nondeterministic, and lead to ___might_sleep() splats in -rt. They're nondeterministic, and lead to ___might_sleep() splats in -rt.
OTOH, they're a lot less wasteful than an rtmutex per page. OTOH, they're a lot less wasteful than an rtmutex per page.

2
debian/patches-rt/drivers-tty-fix-omap-lock-crap.patch vendored
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@ -1,7 +1,7 @@
Subject: tty/serial/omap: Make the locking RT aware Subject: tty/serial/omap: Make the locking RT aware
From: Thomas Gleixner <tglx@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 28 Jul 2011 13:32:57 +0200 Date: Thu, 28 Jul 2011 13:32:57 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
The lock is a sleeping lock and local_irq_save() is not the 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 optimsation we are looking for. Redo it to make it work on -RT and

2
debian/patches-rt/drivers-tty-pl011-irq-disable-madness.patch vendored
View File

@ -1,7 +1,7 @@
Subject: tty/serial/pl011: Make the locking work on RT Subject: tty/serial/pl011: Make the locking work on RT
From: Thomas Gleixner <tglx@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 08 Jan 2013 21:36:51 +0100 Date: Tue, 08 Jan 2013 21:36:51 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
The lock is a sleeping lock and local_irq_save() is not the optimsation 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. we are looking for. Redo it to make it work on -RT and non-RT.

2
debian/patches-rt/drivers-zram-Don-t-disable-preemption-in-zcomp_strea.patch vendored
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@ -2,7 +2,7 @@ From: Mike Galbraith <umgwanakikbuti@gmail.com>
Date: Thu, 20 Oct 2016 11:15:22 +0200 Date: Thu, 20 Oct 2016 11:15:22 +0200
Subject: [PATCH] drivers/zram: Don't disable preemption in Subject: [PATCH] drivers/zram: Don't disable preemption in
zcomp_stream_get/put() zcomp_stream_get/put()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
In v4.7, the driver switched to percpu compression streams, disabling 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 preemption via get/put_cpu_ptr(). Use a per-zcomp_strm lock here. We

2
debian/patches-rt/drivers-zram-fix-zcomp_stream_get-smp_processor_id-u.patch vendored
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@ -2,7 +2,7 @@ From: Mike Galbraith <efault@gmx.de>
Date: Wed, 23 Aug 2017 11:57:29 +0200 Date: Wed, 23 Aug 2017 11:57:29 +0200
Subject: [PATCH] drivers/zram: fix zcomp_stream_get() smp_processor_id() use Subject: [PATCH] drivers/zram: fix zcomp_stream_get() smp_processor_id() use
in preemptible code in preemptible code
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Use get_local_ptr() instead this_cpu_ptr() to avoid a warning regarding Use get_local_ptr() instead this_cpu_ptr() to avoid a warning regarding
smp_processor_id() in preemptible code. smp_processor_id() in preemptible code.

2
debian/patches-rt/drmi915_Use_local_lockunlock_irq()_in_intel_pipe_update_startend().patch vendored
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@ -1,7 +1,7 @@
Subject: drm,i915: Use local_lock/unlock_irq() in intel_pipe_update_start/end() Subject: drm,i915: Use local_lock/unlock_irq() in intel_pipe_update_start/end()
From: Mike Galbraith <umgwanakikbuti@gmail.com> From: Mike Galbraith <umgwanakikbuti@gmail.com>
Date: Sat, 27 Feb 2016 09:01:42 +0100 Date: Sat, 27 Feb 2016 09:01:42 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
[ 8.014039] BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:918 [ 8.014039] BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:918

2
debian/patches-rt/drmradeoni915_Use_preempt_disableenable_rt()_where_recommended.patch vendored
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@ -1,7 +1,7 @@
Subject: drm,radeon,i915: Use preempt_disable/enable_rt() where recommended Subject: drm,radeon,i915: Use preempt_disable/enable_rt() where recommended
From: Mike Galbraith <umgwanakikbuti@gmail.com> From: Mike Galbraith <umgwanakikbuti@gmail.com>
Date: Sat, 27 Feb 2016 08:09:11 +0100 Date: Sat, 27 Feb 2016 08:09:11 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
DRM folks identified the spots, so use them. DRM folks identified the spots, so use them.

2
debian/patches-rt/efi-Allow-efi-runtime.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 26 Jul 2018 15:06:10 +0200 Date: Thu, 26 Jul 2018 15:06:10 +0200
Subject: [PATCH] efi: Allow efi=runtime Subject: [PATCH] efi: Allow efi=runtime
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
In case the option "efi=noruntime" is default at built-time, the user In case the option "efi=noruntime" is default at built-time, the user
could overwrite its sate by `efi=runtime' and allow it again. could overwrite its sate by `efi=runtime' and allow it again.

2
debian/patches-rt/efi-Disable-runtime-services-on-RT.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 26 Jul 2018 15:03:16 +0200 Date: Thu, 26 Jul 2018 15:03:16 +0200
Subject: [PATCH] efi: Disable runtime services on RT Subject: [PATCH] efi: Disable runtime services on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Based on meassurements the EFI functions get_variable / Based on meassurements the EFI functions get_variable /
get_next_variable take up to 2us which looks okay. get_next_variable take up to 2us which looks okay.

2
debian/patches-rt/epoll-use-get-cpu-light.patch vendored
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@ -1,7 +1,7 @@
Subject: fs/epoll: Do not disable preemption on RT Subject: fs/epoll: Do not disable preemption on RT
From: Thomas Gleixner <tglx@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 08 Jul 2011 16:35:35 +0200 Date: Fri, 08 Jul 2011 16:35:35 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
ep_call_nested() takes a sleeping lock so we can't disable preemption. 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 The light version is enough since ep_call_nested() doesn't mind beeing

2
debian/patches-rt/fs-aio-simple-simple-work.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Mon, 16 Feb 2015 18:49:10 +0100 Date: Mon, 16 Feb 2015 18:49:10 +0100
Subject: fs/aio: simple simple work Subject: fs/aio: simple simple work
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:768 |BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:768
|in_atomic(): 1, irqs_disabled(): 0, pid: 26, name: rcuos/2 |in_atomic(): 1, irqs_disabled(): 0, pid: 26, name: rcuos/2

2
debian/patches-rt/fs-dcache-bring-back-explicit-INIT_HLIST_BL_HEAD-in.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 13 Sep 2017 12:32:34 +0200 Date: Wed, 13 Sep 2017 12:32:34 +0200
Subject: [PATCH] fs/dcache: bring back explicit INIT_HLIST_BL_HEAD init Subject: [PATCH] fs/dcache: bring back explicit INIT_HLIST_BL_HEAD init
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Commit 3d375d78593c ("mm: update callers to use HASH_ZERO flag") removed Commit 3d375d78593c ("mm: update callers to use HASH_ZERO flag") removed
INIT_HLIST_BL_HEAD and uses the ZERO flag instead for the init. However INIT_HLIST_BL_HEAD and uses the ZERO flag instead for the init. However

2
debian/patches-rt/fs-dcache-disable-preemption-on-i_dir_seq-s-write-si.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 20 Oct 2017 11:29:53 +0200 Date: Fri, 20 Oct 2017 11:29:53 +0200
Subject: [PATCH] fs/dcache: disable preemption on i_dir_seq's write side Subject: [PATCH] fs/dcache: disable preemption on i_dir_seq's write side
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
i_dir_seq is an opencoded seqcounter. Based on the code it looks like we i_dir_seq is an opencoded seqcounter. Based on the code it looks like we
could have two writers in parallel despite the fact that the d_lock is could have two writers in parallel despite the fact that the d_lock is

2
debian/patches-rt/fs-dcache-use-cpu-chill-in-trylock-loops.patch vendored
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@ -1,7 +1,7 @@
Subject: fs: dcache: Use cpu_chill() in trylock loops Subject: fs: dcache: Use cpu_chill() in trylock loops
From: Thomas Gleixner <tglx@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 07 Mar 2012 21:00:34 +0100 Date: Wed, 07 Mar 2012 21:00:34 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Retry loops on RT might loop forever when the modifying side was Retry loops on RT might loop forever when the modifying side was
preempted. Use cpu_chill() instead of cpu_relax() to let the system preempted. Use cpu_chill() instead of cpu_relax() to let the system

4
debian/patches-rt/fs-dcache-use-swait_queue-instead-of-waitqueue.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 14 Sep 2016 14:35:49 +0200 Date: Wed, 14 Sep 2016 14:35:49 +0200
Subject: [PATCH] fs/dcache: use swait_queue instead of waitqueue Subject: [PATCH] fs/dcache: use swait_queue instead of waitqueue
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
__d_lookup_done() invokes wake_up_all() while holding a hlist_bl_lock() __d_lookup_done() invokes wake_up_all() while holding a hlist_bl_lock()
which disables preemption. As a workaround convert it to swait. which disables preemption. As a workaround convert it to swait.
@ -152,7 +152,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
spin_lock(&dentry->d_lock); spin_lock(&dentry->d_lock);
--- a/fs/proc/base.c --- a/fs/proc/base.c
+++ b/fs/proc/base.c +++ b/fs/proc/base.c
@@ -1864,7 +1864,7 @@ bool proc_fill_cache(struct file *file, @@ -1878,7 +1878,7 @@ bool proc_fill_cache(struct file *file,
child = d_hash_and_lookup(dir, &qname); child = d_hash_and_lookup(dir, &qname);
if (!child) { if (!child) {

2
debian/patches-rt/fs-jbd-replace-bh_state-lock.patch vendored
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@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 18 Mar 2011 10:11:25 +0100 Date: Fri, 18 Mar 2011 10:11:25 +0100
Subject: fs: jbd/jbd2: Make state lock and journal head lock rt safe Subject: fs: jbd/jbd2: Make state lock and journal head lock rt safe
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
bit_spin_locks break under RT. bit_spin_locks break under RT.

2
debian/patches-rt/fs-nfs-turn-rmdir_sem-into-a-semaphore.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 15 Sep 2016 10:51:27 +0200 Date: Thu, 15 Sep 2016 10:51:27 +0200
Subject: [PATCH] fs/nfs: turn rmdir_sem into a semaphore Subject: [PATCH] fs/nfs: turn rmdir_sem into a semaphore
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
The RW semaphore had a reader side which used the _non_owner version 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 because it most likely took the reader lock in one thread and released it

2
debian/patches-rt/fs-replace-bh_uptodate_lock-for-rt.patch vendored
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@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 18 Mar 2011 09:18:52 +0100 Date: Fri, 18 Mar 2011 09:18:52 +0100
Subject: buffer_head: Replace bh_uptodate_lock for -rt Subject: buffer_head: Replace bh_uptodate_lock for -rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Wrap the bit_spin_lock calls into a separate inline and add the RT Wrap the bit_spin_lock calls into a separate inline and add the RT
replacements with a real spinlock. replacements with a real spinlock.

2
debian/patches-rt/fscache-initialize-cookie-hash-table-raw-spinlocks.patch vendored
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@ -1,7 +1,7 @@
From: Clark Williams <williams@redhat.com> From: Clark Williams <williams@redhat.com>
Date: Tue, 3 Jul 2018 13:34:30 -0500 Date: Tue, 3 Jul 2018 13:34:30 -0500
Subject: [PATCH] fscache: initialize cookie hash table raw spinlocks Subject: [PATCH] fscache: initialize cookie hash table raw spinlocks
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
The fscache cookie mechanism uses a hash table of hlist_bl_head structures. The The fscache cookie mechanism uses a hash table of hlist_bl_head structures. The
PREEMPT_RT patcheset adds a raw spinlock to this structure and so on PREEMPT_RT PREEMPT_RT patcheset adds a raw spinlock to this structure and so on PREEMPT_RT

2
debian/patches-rt/ftrace-Fix-trace-header-alignment.patch vendored
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@ -1,7 +1,7 @@
From: Mike Galbraith <umgwanakikbuti@gmail.com> From: Mike Galbraith <umgwanakikbuti@gmail.com>
Date: Sun, 16 Oct 2016 05:08:30 +0200 Date: Sun, 16 Oct 2016 05:08:30 +0200
Subject: [PATCH] ftrace: Fix trace header alignment Subject: [PATCH] ftrace: Fix trace header alignment
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Line up helper arrows to the right column. Line up helper arrows to the right column.

2
debian/patches-rt/ftrace-migrate-disable-tracing.patch vendored
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@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 17 Jul 2011 21:56:42 +0200 Date: Sun, 17 Jul 2011 21:56:42 +0200
Subject: trace: Add migrate-disabled counter to tracing output Subject: trace: Add migrate-disabled counter to tracing output
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
--- ---

2
debian/patches-rt/futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch vendored
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@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 1 Mar 2013 11:17:42 +0100 Date: Fri, 1 Mar 2013 11:17:42 +0100
Subject: futex: Ensure lock/unlock symetry versus pi_lock and hash bucket lock Subject: futex: Ensure lock/unlock symetry versus pi_lock and hash bucket lock
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
In exit_pi_state_list() we have the following locking construct: In exit_pi_state_list() we have the following locking construct:

2
debian/patches-rt/futex-requeue-pi-fix.patch vendored
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@ -1,7 +1,7 @@
From: Steven Rostedt <rostedt@goodmis.org> From: Steven Rostedt <rostedt@goodmis.org>
Date: Tue, 14 Jul 2015 14:26:34 +0200 Date: Tue, 14 Jul 2015 14:26:34 +0200
Subject: futex: Fix bug on when a requeued RT task times out Subject: futex: Fix bug on when a requeued RT task times out
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Requeue with timeout causes a bug with PREEMPT_RT_FULL. Requeue with timeout causes a bug with PREEMPT_RT_FULL.

2
debian/patches-rt/futex-workaround-migrate_disable-enable-in-different.patch vendored
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@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 8 Mar 2017 14:23:35 +0100 Date: Wed, 8 Mar 2017 14:23:35 +0100
Subject: [PATCH] futex: workaround migrate_disable/enable in different context Subject: [PATCH] futex: workaround migrate_disable/enable in different context
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
migrate_disable()/migrate_enable() takes a different path in atomic() vs migrate_disable()/migrate_enable() takes a different path in atomic() vs
!atomic() context. These little hacks ensure that we don't underflow / overflow !atomic() context. These little hacks ensure that we don't underflow / overflow

2
debian/patches-rt/genirq-disable-irqpoll-on-rt.patch vendored
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@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu> From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:29:57 -0500 Date: Fri, 3 Jul 2009 08:29:57 -0500
Subject: genirq: Disable irqpoll on -rt Subject: genirq: Disable irqpoll on -rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Creates long latencies for no value Creates long latencies for no value

2
debian/patches-rt/genirq-do-not-invoke-the-affinity-callback-via-a-wor.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 21 Aug 2013 17:48:46 +0200 Date: Wed, 21 Aug 2013 17:48:46 +0200
Subject: genirq: Do not invoke the affinity callback via a workqueue on RT Subject: genirq: Do not invoke the affinity callback via a workqueue on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Joe Korty reported, that __irq_set_affinity_locked() schedules a Joe Korty reported, that __irq_set_affinity_locked() schedules a
workqueue while holding a rawlock which results in a might_sleep() workqueue while holding a rawlock which results in a might_sleep()

2
debian/patches-rt/genirq-force-threading.patch vendored
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@ -1,7 +1,7 @@
Subject: genirq: Force interrupt thread on RT Subject: genirq: Force interrupt thread on RT
From: Thomas Gleixner <tglx@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 03 Apr 2011 11:57:29 +0200 Date: Sun, 03 Apr 2011 11:57:29 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
Force threaded_irqs and optimize the code (force_irqthreads) in regard Force threaded_irqs and optimize the code (force_irqthreads) in regard
to this. to this.

2
debian/patches-rt/genirq-update-irq_set_irqchip_state-documentation.patch vendored
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@ -1,7 +1,7 @@
From: Josh Cartwright <joshc@ni.com> From: Josh Cartwright <joshc@ni.com>
Date: Thu, 11 Feb 2016 11:54:00 -0600 Date: Thu, 11 Feb 2016 11:54:00 -0600
Subject: genirq: update irq_set_irqchip_state documentation Subject: genirq: update irq_set_irqchip_state documentation
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
On -rt kernels, the use of migrate_disable()/migrate_enable() is On -rt kernels, the use of migrate_disable()/migrate_enable() is
sufficient to guarantee a task isn't moved to another CPU. Update the sufficient to guarantee a task isn't moved to another CPU. Update the

2
debian/patches-rt/hotplug-duct-tape-RT-rwlock-usage-for-non-RT.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 4 Aug 2017 18:31:00 +0200 Date: Fri, 4 Aug 2017 18:31:00 +0200
Subject: [PATCH] hotplug: duct-tape RT-rwlock usage for non-RT Subject: [PATCH] hotplug: duct-tape RT-rwlock usage for non-RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
This type is only available on -RT. We need to craft something for This type is only available on -RT. We need to craft something for
non-RT. Since the only migrate_disable() user is -RT only, there is no non-RT. Since the only migrate_disable() user is -RT only, there is no

2
debian/patches-rt/hotplug-light-get-online-cpus.patch vendored
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@ -1,7 +1,7 @@
Subject: hotplug: Lightweight get online cpus Subject: hotplug: Lightweight get online cpus
From: Thomas Gleixner <tglx@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 15 Jun 2011 12:36:06 +0200 Date: Wed, 15 Jun 2011 12:36:06 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
get_online_cpus() is a heavy weight function which involves a global get_online_cpus() is a heavy weight function which involves a global
mutex. migrate_disable() wants a simpler construct which prevents only mutex. migrate_disable() wants a simpler construct which prevents only

2
debian/patches-rt/hrtimer-Move-schedule_work-call-to-helper-thread.patch vendored
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@ -1,7 +1,7 @@
From: Yang Shi <yang.shi@windriver.com> From: Yang Shi <yang.shi@windriver.com>
Date: Mon, 16 Sep 2013 14:09:19 -0700 Date: Mon, 16 Sep 2013 14:09:19 -0700
Subject: hrtimer: Move schedule_work call to helper thread Subject: hrtimer: Move schedule_work call to helper thread
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
When run ltp leapsec_timer test, the following call trace is caught: When run ltp leapsec_timer test, the following call trace is caught:

12
debian/patches-rt/hrtimer-by-timers-by-default-into-the-softirq-context.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 3 Jul 2009 08:44:31 -0500 Date: Fri, 3 Jul 2009 08:44:31 -0500
Subject: hrtimer: by timers by default into the softirq context Subject: hrtimer: by timers by default into the softirq context
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
We can't have hrtimers callbacks running in hardirq context on RT. Therefore We can't have hrtimers callbacks running in hardirq context on RT. Therefore
the timers are deferred to the softirq context by default. the timers are deferred to the softirq context by default.
@ -28,7 +28,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
--- a/arch/x86/kvm/lapic.c --- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c
@@ -2176,7 +2176,7 @@ int kvm_create_lapic(struct kvm_vcpu *vc @@ -2192,7 +2192,7 @@ int kvm_create_lapic(struct kvm_vcpu *vc
apic->vcpu = vcpu; apic->vcpu = vcpu;
hrtimer_init(&apic->lapic_timer.timer, CLOCK_MONOTONIC, hrtimer_init(&apic->lapic_timer.timer, CLOCK_MONOTONIC,
@ -61,7 +61,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
/* /*
--- a/kernel/events/core.c --- a/kernel/events/core.c
+++ b/kernel/events/core.c +++ b/kernel/events/core.c
@@ -1102,7 +1102,7 @@ static void __perf_mux_hrtimer_init(stru @@ -1107,7 +1107,7 @@ static void __perf_mux_hrtimer_init(stru
cpuctx->hrtimer_interval = ns_to_ktime(NSEC_PER_MSEC * interval); cpuctx->hrtimer_interval = ns_to_ktime(NSEC_PER_MSEC * interval);
raw_spin_lock_init(&cpuctx->hrtimer_lock); raw_spin_lock_init(&cpuctx->hrtimer_lock);
@ -70,7 +70,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
timer->function = perf_mux_hrtimer_handler; timer->function = perf_mux_hrtimer_handler;
} }
@@ -9170,7 +9170,7 @@ static void perf_swevent_init_hrtimer(st @@ -9183,7 +9183,7 @@ static void perf_swevent_init_hrtimer(st
if (!is_sampling_event(event)) if (!is_sampling_event(event))
return; return;
@ -103,7 +103,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
--- a/kernel/sched/fair.c --- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c +++ b/kernel/sched/fair.c
@@ -5184,9 +5184,9 @@ void init_cfs_bandwidth(struct cfs_bandw @@ -5199,9 +5199,9 @@ void init_cfs_bandwidth(struct cfs_bandw
cfs_b->period = ns_to_ktime(default_cfs_period()); cfs_b->period = ns_to_ktime(default_cfs_period());
INIT_LIST_HEAD(&cfs_b->throttled_cfs_rq); INIT_LIST_HEAD(&cfs_b->throttled_cfs_rq);
@ -113,8 +113,8 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
- hrtimer_init(&cfs_b->slack_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); - hrtimer_init(&cfs_b->slack_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+ hrtimer_init(&cfs_b->slack_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_HARD); + hrtimer_init(&cfs_b->slack_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_HARD);
cfs_b->slack_timer.function = sched_cfs_slack_timer; cfs_b->slack_timer.function = sched_cfs_slack_timer;
cfs_b->distribute_running = 0;
} }
--- a/kernel/sched/rt.c --- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c +++ b/kernel/sched/rt.c
@@ -43,8 +43,8 @@ void init_rt_bandwidth(struct rt_bandwid @@ -43,8 +43,8 @@ void init_rt_bandwidth(struct rt_bandwid

2
debian/patches-rt/hrtimer-consolidate-hrtimer_init-hrtimer_init_sleepe.patch vendored
View File

@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 3 Jul 2018 11:25:41 +0200 Date: Tue, 3 Jul 2018 11:25:41 +0200
Subject: [PATCH v2] hrtimer: consolidate hrtimer_init() + hrtimer_init_sleeper() calls Subject: [PATCH v2] hrtimer: consolidate hrtimer_init() + hrtimer_init_sleeper() calls
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
hrtimer_init_sleeper() calls require a prior initialisation of the hrtimer_init_sleeper() calls require a prior initialisation of the
hrtimer object with hrtimer_init(). Lets make the initialisation of hrtimer object with hrtimer_init(). Lets make the initialisation of

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