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[rt] Update to 4.19.59-rt24 

This mostly applied cleanly on 4.19.67.  A few patches had 1 or 2
lines of fuzz which I've resolved.
This commit is contained in:
Ben Hutchings 2019-08-18 22:33:52 +01:00
parent 0899b0f554
commit 795d93f1ed
286 changed files with 3573 additions and 1335 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
debian/changelog vendored
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@ -2153,6 +2153,33 @@ linux (4.19.67-1) UNRELEASED; urgency=medium
* rtc-s35390a: backport fix to make hwclock able to read the time
(Closes: #932845)
[ Ben Hutchings ]
* [rt] Update to 4.19.59-rt24:
- Fix build failure after "genirq: Prevent use-after-free and work
list corruption":
+ Update "genirq: Do not invoke the affinity callback via a workqueue on
RT"
+ kthread: add a global worker thread.
+ genirq: Do not invoke the affinity callback via a workqueue on RT
+ genirq: Handle missing work_struct in irq_set_affinity_notifier()
- Update "irqwork: push most work into softirq context" to resolve
conflict with "irq_work: Do not raise an IPI when queueing work on the
local CPU"
- Drop "random: avoid preempt_disable()ed section"
- arm: imx6: cpuidle: Use raw_spinlock_t
- rcu: Don't allow to change rcu_normal_after_boot on RT
- sched/core: Drop a preempt_disable_rt() statement
- timers: Redo the notification of canceling timers on -RT
- Fix futex regression in 4.19.21:
+ Revert "futex: Ensure lock/unlock symetry versus pi_lock and hash
bucket lock"
+ Revert "futex: Fix bug on when a requeued RT task times out"
+ Revert "rtmutex: Handle the various new futex race conditions"
+ Revert "futex: workaround migrate_disable/enable in different context"
+ futex: Make the futex_hash_bucket lock raw
+ futex: Delay deallocation of pi_state
- mm/zswap: Do not disable preemption in zswap_frontswap_store()
-- Salvatore Bonaccorso <carnil@debian.org> Sun, 23 Jun 2019 16:15:17 +0200
linux (4.19.37-5+deb10u2) buster-security; urgency=high

6
debian/patches-rt/0001-ARM-at91-add-TCB-registers-definitions.patch vendored
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@ -1,8 +1,8 @@
From bc4d8f04b5bd123853531af90f1ec548d8ab61e4 Mon Sep 17 00:00:00 2001
From 200fca9a9f123bcca859fadc996b1e40c0384269 Mon Sep 17 00:00:00 2001
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
Date: Thu, 13 Sep 2018 13:30:18 +0200
Subject: [PATCH 001/269] ARM: at91: add TCB registers definitions
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 001/283] ARM: at91: add TCB registers definitions
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Add registers and bits definitions for the timer counter blocks found on
Atmel ARM SoCs.

10
debian/patches-rt/0002-clocksource-drivers-Add-a-new-driver-for-the-Atmel-A.patch vendored
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@ -1,9 +1,9 @@
From 1eef86c9b8aa09d8e57f4ee5684c7bfd28f6900f Mon Sep 17 00:00:00 2001
From 13e8b97c81d4029a2c41ce13ffc84507af252845 Mon Sep 17 00:00:00 2001
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
Date: Thu, 13 Sep 2018 13:30:19 +0200
Subject: [PATCH 002/269] clocksource/drivers: Add a new driver for the Atmel
Subject: [PATCH 002/283] clocksource/drivers: Add a new driver for the Atmel
ARM TC blocks
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Add a driver for the Atmel Timer Counter Blocks. This driver provides a
clocksource and two clockevent devices.
@ -32,10 +32,10 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
create mode 100644 drivers/clocksource/timer-atmel-tcb.c
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index c1ddafa4c299..c5a5ad4e22e7 100644
index 4d37f018d846..0ab22e7037f4 100644
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig
@@ -414,6 +414,14 @@ config ATMEL_ST
@@ -415,6 +415,14 @@ config ATMEL_ST
help
Support for the Atmel ST timer.

6
debian/patches-rt/0003-clocksource-drivers-timer-atmel-tcb-add-clockevent-d.patch vendored
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@ -1,9 +1,9 @@
From f6803050ab0965a1255a3b407ca429a04c5cb230 Mon Sep 17 00:00:00 2001
From 108301f18eaae6fde1bf8b864d52052bdc2a7043 Mon Sep 17 00:00:00 2001
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
Date: Thu, 13 Sep 2018 13:30:20 +0200
Subject: [PATCH 003/269] clocksource/drivers: timer-atmel-tcb: add clockevent
Subject: [PATCH 003/283] clocksource/drivers: timer-atmel-tcb: add clockevent
device on separate channel
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Add an other clockevent device that uses a separate TCB channel when
available.

10
debian/patches-rt/0004-clocksource-drivers-atmel-pit-make-option-silent.patch vendored
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@ -1,8 +1,8 @@
From 873075a203c574d322429e4a8cd0686541293903 Mon Sep 17 00:00:00 2001
From e60c9d976e3462237d2f3644c18091ac1e7746c6 Mon Sep 17 00:00:00 2001
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
Date: Thu, 13 Sep 2018 13:30:21 +0200
Subject: [PATCH 004/269] clocksource/drivers: atmel-pit: make option silent
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 004/283] clocksource/drivers: atmel-pit: make option silent
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
To conform with the other option, make the ATMEL_PIT option silent so it
can be selected from the platform
@ -15,10 +15,10 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index c5a5ad4e22e7..076aa8184961 100644
index 0ab22e7037f4..34b07047b91f 100644
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig
@@ -403,8 +403,11 @@ config ARMV7M_SYSTICK
@@ -404,8 +404,11 @@ config ARMV7M_SYSTICK
This options enables support for the ARMv7M system timer unit
config ATMEL_PIT

6
debian/patches-rt/0005-ARM-at91-Implement-clocksource-selection.patch vendored
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@ -1,8 +1,8 @@
From e0dc436f11c998b38ee3dc4cd269d5075ea12b7e Mon Sep 17 00:00:00 2001
From 8cd066d01a3bc84384ba64a7521fdc80598a3418 Mon Sep 17 00:00:00 2001
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
Date: Thu, 13 Sep 2018 13:30:22 +0200
Subject: [PATCH 005/269] ARM: at91: Implement clocksource selection
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 005/283] ARM: at91: Implement clocksource selection
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Allow selecting and unselecting the PIT clocksource driver so it doesn't
have to be compile when unused.

6
debian/patches-rt/0006-ARM-configs-at91-use-new-TCB-timer-driver.patch vendored
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@ -1,8 +1,8 @@
From ca4a1c8ce5f7224d99ef6c2a6754468cb72ea4c3 Mon Sep 17 00:00:00 2001
From db6f702c9d0558505d757c28c61f4f6a567a898a Mon Sep 17 00:00:00 2001
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
Date: Thu, 13 Sep 2018 13:30:23 +0200
Subject: [PATCH 006/269] ARM: configs: at91: use new TCB timer driver
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 006/283] ARM: configs: at91: use new TCB timer driver
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Unselecting ATMEL_TCLIB switches the TCB timer driver from tcb_clksrc to
timer-atmel-tcb.

6
debian/patches-rt/0007-ARM-configs-at91-unselect-PIT.patch vendored
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@ -1,8 +1,8 @@
From 2c83222f4057f755febccd002f3720bbf73a6473 Mon Sep 17 00:00:00 2001
From 95cda24e3882fa19a569c029275d14089e8418e9 Mon Sep 17 00:00:00 2001
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
Date: Thu, 13 Sep 2018 13:30:24 +0200
Subject: [PATCH 007/269] ARM: configs: at91: unselect PIT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 007/283] ARM: configs: at91: unselect PIT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
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.

6
debian/patches-rt/0008-irqchip-gic-v3-its-Move-pending-table-allocation-to-.patch vendored
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@ -1,9 +1,9 @@
From bb357496d72d05e2841899655c8e709d7c369ab0 Mon Sep 17 00:00:00 2001
From 44f074c1b1621cbfa2d9f8f44aa69231154399d9 Mon Sep 17 00:00:00 2001
From: Marc Zyngier <marc.zyngier@arm.com>
Date: Fri, 27 Jul 2018 13:38:54 +0100
Subject: [PATCH 008/269] irqchip/gic-v3-its: Move pending table allocation to
Subject: [PATCH 008/283] irqchip/gic-v3-its: Move pending table allocation to
init time
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

6
debian/patches-rt/0009-kthread-convert-worker-lock-to-raw-spinlock.patch vendored
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@ -1,8 +1,8 @@
From 9d8b1db47a7e355eb0c34a8af57f3613db6cb18c Mon Sep 17 00:00:00 2001
From cd9320a1954642117f572891a8b45b177e6b0ebf Mon Sep 17 00:00:00 2001
From: Julia Cartwright <julia@ni.com>
Date: Fri, 28 Sep 2018 21:03:51 +0000
Subject: [PATCH 009/269] kthread: convert worker lock to raw spinlock
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 009/283] kthread: convert worker lock to raw spinlock
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
In order to enable the queuing of kthread work items from hardirq
context even when PREEMPT_RT_FULL is enabled, convert the worker

6
debian/patches-rt/0010-crypto-caam-qi-simplify-CGR-allocation-freeing.patch vendored
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@ -1,11 +1,11 @@
From b37ee7bd4ac42c97c3fce905634cf808345a25ac Mon Sep 17 00:00:00 2001
From d4cc8969937e548b95b4d6f40804a4b706c9b441 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Horia=20Geant=C4=83?= <horia.geanta@nxp.com>
Date: Mon, 8 Oct 2018 14:09:37 +0300
Subject: [PATCH 010/269] crypto: caam/qi - simplify CGR allocation, freeing
Subject: [PATCH 010/283] crypto: caam/qi - simplify CGR allocation, freeing
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
[Upstream commit 29e83c757006fd751966bdc53392bb22d74179c6]

24
debian/patches-rt/0011-sched-fair-Robustify-CFS-bandwidth-timer-locking.patch vendored
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@ -1,8 +1,8 @@
From 78f68e44994c830d70aa92bb86a47b204ff605c6 Mon Sep 17 00:00:00 2001
From 256f2e459fd2eea3e04b6b9934f06c46e19185bb Mon Sep 17 00:00:00 2001
From: Peter Zijlstra <peterz@infradead.org>
Date: Mon, 7 Jan 2019 13:52:31 +0100
Subject: [PATCH 011/269] sched/fair: Robustify CFS-bandwidth timer locking
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 011/283] sched/fair: Robustify CFS-bandwidth timer locking
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Traditionally hrtimer callbacks were run with IRQs disabled, but with
the introduction of HRTIMER_MODE_SOFT it is possible they run from
@ -30,10 +30,10 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
1 file changed, 16 insertions(+), 14 deletions(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 4aa8e7d90c25..53acadf72cd9 100644
index 4a433608ba74..289c966f907a 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -4553,7 +4553,7 @@ static u64 distribute_cfs_runtime(struct cfs_bandwidth *cfs_b,
@@ -4557,7 +4557,7 @@ static u64 distribute_cfs_runtime(struct cfs_bandwidth *cfs_b,
struct rq *rq = rq_of(cfs_rq);
struct rq_flags rf;
@ -42,7 +42,7 @@ index 4aa8e7d90c25..53acadf72cd9 100644
if (!cfs_rq_throttled(cfs_rq))
goto next;
@@ -4570,7 +4570,7 @@ static u64 distribute_cfs_runtime(struct cfs_bandwidth *cfs_b,
@@ -4574,7 +4574,7 @@ static u64 distribute_cfs_runtime(struct cfs_bandwidth *cfs_b,
unthrottle_cfs_rq(cfs_rq);
next:
@ -51,7 +51,7 @@ index 4aa8e7d90c25..53acadf72cd9 100644
if (!remaining)
break;
@@ -4586,7 +4586,7 @@ static u64 distribute_cfs_runtime(struct cfs_bandwidth *cfs_b,
@@ -4590,7 +4590,7 @@ static u64 distribute_cfs_runtime(struct cfs_bandwidth *cfs_b,
* period the timer is deactivated until scheduling resumes; cfs_b->idle is
* used to track this state.
*/
@ -60,7 +60,7 @@ index 4aa8e7d90c25..53acadf72cd9 100644
{
u64 runtime, runtime_expires;
int throttled;
@@ -4628,11 +4628,11 @@ static int do_sched_cfs_period_timer(struct cfs_bandwidth *cfs_b, int overrun)
@@ -4632,11 +4632,11 @@ static int do_sched_cfs_period_timer(struct cfs_bandwidth *cfs_b, int overrun)
while (throttled && cfs_b->runtime > 0 && !cfs_b->distribute_running) {
runtime = cfs_b->runtime;
cfs_b->distribute_running = 1;
@ -74,7 +74,7 @@ index 4aa8e7d90c25..53acadf72cd9 100644
cfs_b->distribute_running = 0;
throttled = !list_empty(&cfs_b->throttled_cfs_rq);
@@ -4741,17 +4741,18 @@ static __always_inline void return_cfs_rq_runtime(struct cfs_rq *cfs_rq)
@@ -4745,17 +4745,18 @@ static __always_inline void return_cfs_rq_runtime(struct cfs_rq *cfs_rq)
static void do_sched_cfs_slack_timer(struct cfs_bandwidth *cfs_b)
{
u64 runtime = 0, slice = sched_cfs_bandwidth_slice();
@ -96,7 +96,7 @@ index 4aa8e7d90c25..53acadf72cd9 100644
return;
}
@@ -4762,18 +4763,18 @@ static void do_sched_cfs_slack_timer(struct cfs_bandwidth *cfs_b)
@@ -4766,18 +4767,18 @@ static void do_sched_cfs_slack_timer(struct cfs_bandwidth *cfs_b)
if (runtime)
cfs_b->distribute_running = 1;
@ -118,7 +118,7 @@ index 4aa8e7d90c25..53acadf72cd9 100644
}
/*
@@ -4853,11 +4854,12 @@ static enum hrtimer_restart sched_cfs_period_timer(struct hrtimer *timer)
@@ -4857,11 +4858,12 @@ static enum hrtimer_restart sched_cfs_period_timer(struct hrtimer *timer)
{
struct cfs_bandwidth *cfs_b =
container_of(timer, struct cfs_bandwidth, period_timer);
@ -132,7 +132,7 @@ index 4aa8e7d90c25..53acadf72cd9 100644
for (;;) {
overrun = hrtimer_forward_now(timer, cfs_b->period);
if (!overrun)
@@ -4885,11 +4887,11 @@ static enum hrtimer_restart sched_cfs_period_timer(struct hrtimer *timer)
@@ -4889,11 +4891,11 @@ static enum hrtimer_restart sched_cfs_period_timer(struct hrtimer *timer)
count = 0;
}

6
debian/patches-rt/0012-arm-Convert-arm-boot_lock-to-raw.patch vendored
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@ -1,8 +1,8 @@
From fa6e4c3d085352808073b23fdff79729db01930a Mon Sep 17 00:00:00 2001
From 3c866fa6b40a3acfe50a091680cd9f51a54cd45b Mon Sep 17 00:00:00 2001
From: Frank Rowand <frank.rowand@am.sony.com>
Date: Mon, 19 Sep 2011 14:51:14 -0700
Subject: [PATCH 012/269] arm: Convert arm boot_lock to raw
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 012/283] arm: Convert arm boot_lock to raw
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
The arm boot_lock is used by the secondary processor startup code. The locking
task is the idle thread, which has idle->sched_class == &idle_sched_class.

6
debian/patches-rt/0013-x86-ioapic-Don-t-let-setaffinity-unmask-threaded-EOI.patch vendored
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@ -1,9 +1,9 @@
From 4debab2aa3d29fcdb5b9cd132416094c54e9361b Mon Sep 17 00:00:00 2001
From abbec8803a7e474a1e1a1b1ee105de8ffd0c8cbc Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 17 Jul 2018 18:25:31 +0200
Subject: [PATCH 013/269] x86/ioapic: Don't let setaffinity unmask threaded EOI
Subject: [PATCH 013/283] x86/ioapic: Don't let setaffinity unmask threaded EOI
interrupt too early
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
There is an issue with threaded interrupts which are marked ONESHOT
and using the fasteoi handler.

6
debian/patches-rt/0014-cgroup-use-irqsave-in-cgroup_rstat_flush_locked.patch vendored
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@ -1,8 +1,8 @@
From 1117688ac7606703683b1ac8cacdbf02d47b4adb Mon Sep 17 00:00:00 2001
From 39150ca165ea6d7d6b5ffe76efb6170893ffdb06 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 3 Jul 2018 18:19:48 +0200
Subject: [PATCH 014/269] cgroup: use irqsave in cgroup_rstat_flush_locked()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 014/283] cgroup: use irqsave in cgroup_rstat_flush_locked()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
All callers of cgroup_rstat_flush_locked() acquire cgroup_rstat_lock
either with spin_lock_irq() or spin_lock_irqsave().

6
debian/patches-rt/0015-fscache-initialize-cookie-hash-table-raw-spinlocks.patch vendored
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@ -1,8 +1,8 @@
From 8cf7a5b4f03a2829c823971a12c1a206bcba069d Mon Sep 17 00:00:00 2001
From 6c83cc3183d8efc6378788160d78a3a917a5ae96 Mon Sep 17 00:00:00 2001
From: Clark Williams <williams@redhat.com>
Date: Tue, 3 Jul 2018 13:34:30 -0500
Subject: [PATCH 015/269] fscache: initialize cookie hash table raw spinlocks
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 015/283] fscache: initialize cookie hash table raw spinlocks
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
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

6
debian/patches-rt/0016-Drivers-hv-vmbus-include-header-for-get_irq_regs.patch vendored
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@ -1,11 +1,11 @@
From 841d8b9e20d17d7907421dc223346198287e81a1 Mon Sep 17 00:00:00 2001
From fdfc7c94f7e160bd80c27ac31c6823fbb20330f7 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 29 Aug 2018 21:59:04 +0200
Subject: [PATCH 016/269] Drivers: hv: vmbus: include header for get_irq_regs()
Subject: [PATCH 016/283] Drivers: hv: vmbus: include header for get_irq_regs()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
On !RT the header file get_irq_regs() gets pulled in via other header files. On
RT it does not and the build fails:

6
debian/patches-rt/0017-percpu-include-irqflags.h-for-raw_local_irq_save.patch vendored
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@ -1,8 +1,8 @@
From d77a9b0754acbc89c7884b3505afdbb49677b36a Mon Sep 17 00:00:00 2001
From 31f7158d8389cec550de5964422b1123fc94079b Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 11 Oct 2018 16:39:59 +0200
Subject: [PATCH 017/269] percpu: include irqflags.h for raw_local_irq_save()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 017/283] percpu: include irqflags.h for raw_local_irq_save()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
The header percpu.h header file is using raw_local_irq_save() but does
not include irqflags.h for its definition. It compiles because the

6
debian/patches-rt/0018-efi-Allow-efi-runtime.patch vendored
View File

@ -1,8 +1,8 @@
From 10c47a6dadf91edee1d414002f91cc73bbe59c90 Mon Sep 17 00:00:00 2001
From fcb3ebea1da6aede14a10c28a06902043072f250 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 26 Jul 2018 15:06:10 +0200
Subject: [PATCH 018/269] efi: Allow efi=runtime
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 018/283] efi: Allow efi=runtime
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
In case the option "efi=noruntime" is default at built-time, the user
could overwrite its sate by `efi=runtime' and allow it again.

6
debian/patches-rt/0019-x86-efi-drop-task_lock-from-efi_switch_mm.patch vendored
View File

@ -1,8 +1,8 @@
From d1af306cedb5a02314565763b49992b10ce5d802 Mon Sep 17 00:00:00 2001
From 9dda6e746277e68f244d5660b5a3f3f85b0d9be0 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 24 Jul 2018 14:48:55 +0200
Subject: [PATCH 019/269] x86/efi: drop task_lock() from efi_switch_mm()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 019/283] x86/efi: drop task_lock() from efi_switch_mm()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
efi_switch_mm() is a wrapper around switch_mm() which saves current's
->active_mm, sets the requests mm as ->active_mm and invokes

6
debian/patches-rt/0020-arm64-KVM-compute_layout-before-altenates-are-applie.patch vendored
View File

@ -1,9 +1,9 @@
From 6d4ae829b2e8c46b1d730790bf2644e5a053cf14 Mon Sep 17 00:00:00 2001
From b66a9f85a9e8ee817d0e2de1637bf95b7710127f Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 26 Jul 2018 09:13:42 +0200
Subject: [PATCH 020/269] arm64: KVM: compute_layout before altenates are
Subject: [PATCH 020/283] arm64: KVM: compute_layout before altenates are
applied
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
compute_layout() is invoked as part of an alternative fixup under
stop_machine() and needs a sleeping lock as part of get_random_long().

6
debian/patches-rt/0021-of-allocate-free-phandle-cache-outside-of-the-devtre.patch vendored
View File

@ -1,9 +1,9 @@
From 1ab1616de2aaaa7392ebb706a457af2fdcd2b82a Mon Sep 17 00:00:00 2001
From 6d0f5b28de481062ee69b0d62ae5ef2fc5101f9c Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 31 Aug 2018 14:16:30 +0200
Subject: [PATCH 021/269] of: allocate / free phandle cache outside of the
Subject: [PATCH 021/283] of: allocate / free phandle cache outside of the
devtree_lock
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
The phandle cache code allocates memory while holding devtree_lock which
is a raw_spinlock_t. Memory allocation (and free()) is not possible on

6
debian/patches-rt/0022-mm-kasan-make-quarantine_lock-a-raw_spinlock_t.patch vendored
View File

@ -1,8 +1,8 @@
From a61c877f81f1f0b850090df19e08d51cf9465955 Mon Sep 17 00:00:00 2001
From 3ec52d2ee13b6e83429a4f7a048a0005305b8033 Mon Sep 17 00:00:00 2001
From: Clark Williams <williams@redhat.com>
Date: Tue, 18 Sep 2018 10:29:31 -0500
Subject: [PATCH 022/269] mm/kasan: make quarantine_lock a raw_spinlock_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 022/283] mm/kasan: make quarantine_lock a raw_spinlock_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
The static lock quarantine_lock is used in quarantine.c to protect the
quarantine queue datastructures. It is taken inside quarantine queue

6
debian/patches-rt/0023-EXP-rcu-Revert-expedited-GP-parallelization-cleverne.patch vendored
View File

@ -1,9 +1,9 @@
From b710c9561c0a7ddf1c7fef8d3bd3bc6d9e140a4e Mon Sep 17 00:00:00 2001
From 22ddccee8b48a817b261c98dda99967345475755 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 023/269] EXP rcu: Revert expedited GP parallelization
Subject: [PATCH 023/283] EXP rcu: Revert expedited GP parallelization
cleverness
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
(Commit 258ba8e089db23f760139266c232f01bad73f85c from linux-rcu)

8
debian/patches-rt/0024-kmemleak-Turn-kmemleak_lock-to-raw-spinlock-on-RT.patch vendored
View File

@ -1,11 +1,11 @@
From b32df881582f39cab5e57b894f554f8573170cf7 Mon Sep 17 00:00:00 2001
From ced9290a5d8460c8a46615a475cd094bc3b0c344 Mon Sep 17 00:00:00 2001
From: He Zhe <zhe.he@windriver.com>
Date: Wed, 19 Dec 2018 16:30:57 +0100
Subject: [PATCH 024/269] kmemleak: Turn kmemleak_lock to raw spinlock on RT
Subject: [PATCH 024/283] kmemleak: Turn kmemleak_lock to raw spinlock on RT
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
kmemleak_lock, as a rwlock on RT, can possibly be held in atomic context and
causes the follow BUG.
@ -79,7 +79,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index 17dd883198ae..b68a3d0d075f 100644
index 72e3fb3bb037..0ed549045074 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -26,7 +26,7 @@

20
debian/patches-rt/0025-NFSv4-replace-seqcount_t-with-a-seqlock_t.patch vendored
View File

@ -1,8 +1,8 @@
From 82889085f9639d9aed51313cf8fd8e8ca32b8e8b Mon Sep 17 00:00:00 2001
From e1b321401ca437984b8973749826aea3a245e15b Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 28 Oct 2016 23:05:11 +0200
Subject: [PATCH 025/269] NFSv4: replace seqcount_t with a seqlock_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 025/283] NFSv4: replace seqcount_t with a seqlock_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
The raw_write_seqcount_begin() in nfs4_reclaim_open_state() bugs me
because it maps to preempt_disable() in -RT which I can't have at this
@ -58,10 +58,10 @@ index 63287d911c08..2ae55eaa4a1e 100644
};
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 580e37bc3fe2..9d010731f901 100644
index 1de855e0ae61..78c3f4359e76 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2863,7 +2863,7 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata,
@@ -2865,7 +2865,7 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata,
unsigned int seq;
int ret;
@ -70,7 +70,7 @@ index 580e37bc3fe2..9d010731f901 100644
ret = _nfs4_proc_open(opendata, ctx);
if (ret != 0)
@@ -2904,7 +2904,7 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata,
@@ -2906,7 +2906,7 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata,
if (d_inode(dentry) == state->inode) {
nfs_inode_attach_open_context(ctx);
@ -80,10 +80,10 @@ index 580e37bc3fe2..9d010731f901 100644
}
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index d2f645d34eb1..1698dd2ca20b 100644
index 3ba2087469ac..f10952680bd9 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -511,7 +511,7 @@ nfs4_alloc_state_owner(struct nfs_server *server,
@@ -515,7 +515,7 @@ nfs4_alloc_state_owner(struct nfs_server *server,
nfs4_init_seqid_counter(&sp->so_seqid);
atomic_set(&sp->so_count, 1);
INIT_LIST_HEAD(&sp->so_lru);
@ -92,7 +92,7 @@ index d2f645d34eb1..1698dd2ca20b 100644
mutex_init(&sp->so_delegreturn_mutex);
return sp;
}
@@ -1564,8 +1564,12 @@ static int nfs4_reclaim_open_state(struct nfs4_state_owner *sp, const struct nfs
@@ -1568,8 +1568,12 @@ static int nfs4_reclaim_open_state(struct nfs4_state_owner *sp, const struct nfs
* recovering after a network partition or a reboot from a
* server that doesn't support a grace period.
*/
@ -106,7 +106,7 @@ index d2f645d34eb1..1698dd2ca20b 100644
restart:
list_for_each_entry(state, &sp->so_states, open_states) {
if (!test_and_clear_bit(ops->state_flag_bit, &state->flags))
@@ -1652,14 +1656,20 @@ static int nfs4_reclaim_open_state(struct nfs4_state_owner *sp, const struct nfs
@@ -1656,14 +1660,20 @@ static int nfs4_reclaim_open_state(struct nfs4_state_owner *sp, const struct nfs
spin_lock(&sp->so_lock);
goto restart;
}

54
debian/patches-rt/0026-kernel-sched-Provide-a-pointer-to-the-valid-CPU-mask.patch vendored
View File

@ -1,12 +1,12 @@
From 3ace22e122817ae9b6da2d0c49209a834f96375c Mon Sep 17 00:00:00 2001
From 02954bb06eedf19db3637fea6699d0dc1761b270 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 4 Apr 2017 12:50:16 +0200
Subject: [PATCH 026/269] kernel: sched: Provide a pointer to the valid CPU
Subject: [PATCH 026/283] kernel: sched: Provide a pointer to the valid CPU
mask
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
In commit 4b53a3412d66 ("sched/core: Remove the tsk_nr_cpus_allowed()
wrapper") the tsk_nr_cpus_allowed() wrapper was removed. There was not
@ -166,7 +166,7 @@ index c9ef3c532169..cb10249b1125 100644
/* Save the current cpu id for spu interrupt routing. */
ctx->last_ran = raw_smp_processor_id();
diff --git a/arch/x86/kernel/cpu/intel_rdt_pseudo_lock.c b/arch/x86/kernel/cpu/intel_rdt_pseudo_lock.c
index f8c260d522ca..befeec6414b0 100644
index 912d53939f4f..6b8dc68b5ccc 100644
--- a/arch/x86/kernel/cpu/intel_rdt_pseudo_lock.c
+++ b/arch/x86/kernel/cpu/intel_rdt_pseudo_lock.c
@@ -1435,7 +1435,7 @@ static int pseudo_lock_dev_mmap(struct file *filp, struct vm_area_struct *vma)
@ -255,7 +255,7 @@ index 98e1ce14fa2a..5d3828625017 100644
if (weight == 1 && !test_bit(cpu, qib_cpulist))
if (!find_hca(cpu, &unit) && unit >= 0)
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 0ceb3b6b37e7..ccfef702c771 100644
index 9eb99a43f849..e4d0cfebaac5 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -381,9 +381,9 @@ static inline void task_context_switch_counts(struct seq_file *m,
@ -308,7 +308,7 @@ index 5aebe3be4d7c..0b49b9cf5571 100644
.mm = NULL,
.active_mm = &init_mm,
diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c
index 266f10cb7222..ef085d84a940 100644
index ff956ccbb6df..7bb129c5b412 100644
--- a/kernel/cgroup/cpuset.c
+++ b/kernel/cgroup/cpuset.c
@@ -2090,7 +2090,7 @@ static void cpuset_fork(struct task_struct *task)
@ -321,7 +321,7 @@ index 266f10cb7222..ef085d84a940 100644
}
diff --git a/kernel/fork.c b/kernel/fork.c
index 64ef113e387e..bfe9c5c3eb88 100644
index 69874db3fba8..98c971cb1d36 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -845,6 +845,8 @@ static struct task_struct *dup_task_struct(struct task_struct *orig, int node)
@ -334,7 +334,7 @@ index 64ef113e387e..bfe9c5c3eb88 100644
/*
* One for us, one for whoever does the "release_task()" (usually
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index d7f409866cdf..80badc70c258 100644
index 6859ea1d5c04..d6f690064cce 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -878,7 +878,7 @@ static inline bool is_per_cpu_kthread(struct task_struct *p)
@ -542,10 +542,10 @@ index daaadf939ccb..f7d2c10b4c92 100644
/*
* We have to ensure that we have at least one bit
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index 91e4202b0634..f927b1f45474 100644
index 72c07059ef37..fb6e64417470 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -539,7 +539,7 @@ static struct rq *dl_task_offline_migration(struct rq *rq, struct task_struct *p
@@ -538,7 +538,7 @@ static struct rq *dl_task_offline_migration(struct rq *rq, struct task_struct *p
* If we cannot preempt any rq, fall back to pick any
* online CPU:
*/
@ -554,7 +554,7 @@ index 91e4202b0634..f927b1f45474 100644
if (cpu >= nr_cpu_ids) {
/*
* Failed to find any suitable CPU.
@@ -1824,7 +1824,7 @@ static void set_curr_task_dl(struct rq *rq)
@@ -1823,7 +1823,7 @@ static void set_curr_task_dl(struct rq *rq)
static int pick_dl_task(struct rq *rq, struct task_struct *p, int cpu)
{
if (!task_running(rq, p) &&
@ -563,7 +563,7 @@ index 91e4202b0634..f927b1f45474 100644
return 1;
return 0;
}
@@ -1974,7 +1974,7 @@ static struct rq *find_lock_later_rq(struct task_struct *task, struct rq *rq)
@@ -1973,7 +1973,7 @@ static struct rq *find_lock_later_rq(struct task_struct *task, struct rq *rq)
/* Retry if something changed. */
if (double_lock_balance(rq, later_rq)) {
if (unlikely(task_rq(task) != rq ||
@ -573,7 +573,7 @@ index 91e4202b0634..f927b1f45474 100644
!dl_task(task) ||
!task_on_rq_queued(task))) {
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 53acadf72cd9..c17d63b06026 100644
index 289c966f907a..0048a32a3b4d 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -1630,7 +1630,7 @@ static void task_numa_compare(struct task_numa_env *env,
@ -594,7 +594,7 @@ index 53acadf72cd9..c17d63b06026 100644
continue;
env->dst_cpu = cpu;
@@ -5737,7 +5737,7 @@ find_idlest_group(struct sched_domain *sd, struct task_struct *p,
@@ -5741,7 +5741,7 @@ find_idlest_group(struct sched_domain *sd, struct task_struct *p,
/* Skip over this group if it has no CPUs allowed */
if (!cpumask_intersects(sched_group_span(group),
@ -603,7 +603,7 @@ index 53acadf72cd9..c17d63b06026 100644
continue;
local_group = cpumask_test_cpu(this_cpu,
@@ -5869,7 +5869,7 @@ find_idlest_group_cpu(struct sched_group *group, struct task_struct *p, int this
@@ -5873,7 +5873,7 @@ find_idlest_group_cpu(struct sched_group *group, struct task_struct *p, int this
return cpumask_first(sched_group_span(group));
/* Traverse only the allowed CPUs */
@ -612,7 +612,7 @@ index 53acadf72cd9..c17d63b06026 100644
if (available_idle_cpu(i)) {
struct rq *rq = cpu_rq(i);
struct cpuidle_state *idle = idle_get_state(rq);
@@ -5909,7 +5909,7 @@ static inline int find_idlest_cpu(struct sched_domain *sd, struct task_struct *p
@@ -5913,7 +5913,7 @@ static inline int find_idlest_cpu(struct sched_domain *sd, struct task_struct *p
{
int new_cpu = cpu;
@ -621,7 +621,7 @@ index 53acadf72cd9..c17d63b06026 100644
return prev_cpu;
/*
@@ -6026,7 +6026,7 @@ static int select_idle_core(struct task_struct *p, struct sched_domain *sd, int
@@ -6030,7 +6030,7 @@ static int select_idle_core(struct task_struct *p, struct sched_domain *sd, int
if (!test_idle_cores(target, false))
return -1;
@ -630,7 +630,7 @@ index 53acadf72cd9..c17d63b06026 100644
for_each_cpu_wrap(core, cpus, target) {
bool idle = true;
@@ -6060,7 +6060,7 @@ static int select_idle_smt(struct task_struct *p, struct sched_domain *sd, int t
@@ -6064,7 +6064,7 @@ static int select_idle_smt(struct task_struct *p, struct sched_domain *sd, int t
return -1;
for_each_cpu(cpu, cpu_smt_mask(target)) {
@ -639,7 +639,7 @@ index 53acadf72cd9..c17d63b06026 100644
continue;
if (available_idle_cpu(cpu))
return cpu;
@@ -6123,7 +6123,7 @@ static int select_idle_cpu(struct task_struct *p, struct sched_domain *sd, int t
@@ -6127,7 +6127,7 @@ static int select_idle_cpu(struct task_struct *p, struct sched_domain *sd, int t
for_each_cpu_wrap(cpu, sched_domain_span(sd), target) {
if (!--nr)
return -1;
@ -648,7 +648,7 @@ index 53acadf72cd9..c17d63b06026 100644
continue;
if (available_idle_cpu(cpu))
break;
@@ -6160,7 +6160,7 @@ static int select_idle_sibling(struct task_struct *p, int prev, int target)
@@ -6164,7 +6164,7 @@ static int select_idle_sibling(struct task_struct *p, int prev, int target)
recent_used_cpu != target &&
cpus_share_cache(recent_used_cpu, target) &&
available_idle_cpu(recent_used_cpu) &&
@ -657,7 +657,7 @@ index 53acadf72cd9..c17d63b06026 100644
/*
* Replace recent_used_cpu with prev as it is a potential
* candidate for the next wake:
@@ -6378,7 +6378,7 @@ select_task_rq_fair(struct task_struct *p, int prev_cpu, int sd_flag, int wake_f
@@ -6382,7 +6382,7 @@ select_task_rq_fair(struct task_struct *p, int prev_cpu, int sd_flag, int wake_f
if (sd_flag & SD_BALANCE_WAKE) {
record_wakee(p);
want_affine = !wake_wide(p) && !wake_cap(p, cpu, prev_cpu)
@ -666,7 +666,7 @@ index 53acadf72cd9..c17d63b06026 100644
}
rcu_read_lock();
@@ -7117,14 +7117,14 @@ int can_migrate_task(struct task_struct *p, struct lb_env *env)
@@ -7121,14 +7121,14 @@ int can_migrate_task(struct task_struct *p, struct lb_env *env)
/*
* We do not migrate tasks that are:
* 1) throttled_lb_pair, or
@ -683,7 +683,7 @@ index 53acadf72cd9..c17d63b06026 100644
int cpu;
schedstat_inc(p->se.statistics.nr_failed_migrations_affine);
@@ -7144,7 +7144,7 @@ int can_migrate_task(struct task_struct *p, struct lb_env *env)
@@ -7148,7 +7148,7 @@ int can_migrate_task(struct task_struct *p, struct lb_env *env)
/* Prevent to re-select dst_cpu via env's CPUs: */
for_each_cpu_and(cpu, env->dst_grpmask, env->cpus) {
@ -692,7 +692,7 @@ index 53acadf72cd9..c17d63b06026 100644
env->flags |= LBF_DST_PINNED;
env->new_dst_cpu = cpu;
break;
@@ -7741,7 +7741,7 @@ check_cpu_capacity(struct rq *rq, struct sched_domain *sd)
@@ -7745,7 +7745,7 @@ check_cpu_capacity(struct rq *rq, struct sched_domain *sd)
/*
* Group imbalance indicates (and tries to solve) the problem where balancing
@ -701,7 +701,7 @@ index 53acadf72cd9..c17d63b06026 100644
*
* Imagine a situation of two groups of 4 CPUs each and 4 tasks each with a
* cpumask covering 1 CPU of the first group and 3 CPUs of the second group.
@@ -8356,7 +8356,7 @@ static struct sched_group *find_busiest_group(struct lb_env *env)
@@ -8360,7 +8360,7 @@ static struct sched_group *find_busiest_group(struct lb_env *env)
/*
* If the busiest group is imbalanced the below checks don't
* work because they assume all things are equal, which typically
@ -710,7 +710,7 @@ index 53acadf72cd9..c17d63b06026 100644
*/
if (busiest->group_type == group_imbalanced)
goto force_balance;
@@ -8752,7 +8752,7 @@ static int load_balance(int this_cpu, struct rq *this_rq,
@@ -8756,7 +8756,7 @@ static int load_balance(int this_cpu, struct rq *this_rq,
* if the curr task on busiest CPU can't be
* moved to this_cpu:
*/
@ -720,7 +720,7 @@ index 53acadf72cd9..c17d63b06026 100644
flags);
env.flags |= LBF_ALL_PINNED;
diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index 2e2955a8cf8f..4857ca145119 100644
index b980cc96604f..b6ca4a630050 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -1611,7 +1611,7 @@ static void put_prev_task_rt(struct rq *rq, struct task_struct *p)

12
debian/patches-rt/0027-kernel-sched-core-add-migrate_disable.patch vendored
View File

@ -1,8 +1,8 @@
From 2fc8b5c9ca4ff2df7913d6e6d75a98bdece9b264 Mon Sep 17 00:00:00 2001
From bda814671dc9f9f74cabd99a65cad3101b68ee83 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat, 27 May 2017 19:02:06 +0200
Subject: [PATCH 027/269] kernel/sched/core: add migrate_disable()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 027/283] kernel/sched/core: add migrate_disable()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
---
include/linux/preempt.h | 23 +++++++
@ -86,7 +86,7 @@ index 9fb239e12b82..5801e516ba63 100644
* Callback to arch code if there's nosmp or maxcpus=0 on the
* boot command line:
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 80badc70c258..3df110e8c6f9 100644
index d6f690064cce..b658f0147c3b 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -1008,7 +1008,15 @@ void set_cpus_allowed_common(struct task_struct *p, const struct cpumask *new_ma
@ -145,7 +145,7 @@ index 80badc70c258..3df110e8c6f9 100644
dest_cpu = cpumask_any_and(cpu_valid_mask, new_mask);
if (task_running(rq, p) || p->state == TASK_WAKING) {
struct migration_arg arg = { p, dest_cpu };
@@ -7060,3 +7089,100 @@ const u32 sched_prio_to_wmult[40] = {
@@ -7067,3 +7096,100 @@ const u32 sched_prio_to_wmult[40] = {
};
#undef CREATE_TRACE_POINTS
@ -247,7 +247,7 @@ index 80badc70c258..3df110e8c6f9 100644
+EXPORT_SYMBOL(migrate_enable);
+#endif
diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
index 141ea9ff210e..34c27afae009 100644
index 78fadf0438ea..5027158d3908 100644
--- a/kernel/sched/debug.c
+++ b/kernel/sched/debug.c
@@ -982,6 +982,10 @@ void proc_sched_show_task(struct task_struct *p, struct pid_namespace *ns,

8
debian/patches-rt/0028-sched-migrate_disable-Add-export_symbol_gpl-for-__mi.patch vendored
View File

@ -1,9 +1,9 @@
From 0af010b771c642c17c33fbc991e183c04427af59 Mon Sep 17 00:00:00 2001
From 6fb56185df42e49e0e2d8fe12d315356a57f4bce Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 9 Oct 2018 17:34:50 +0200
Subject: [PATCH 028/269] sched/migrate_disable: Add export_symbol_gpl for
Subject: [PATCH 028/283] sched/migrate_disable: Add export_symbol_gpl for
__migrate_disabled
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Jonathan reported that lttng/modules can't use __migrate_disabled().
This function is only used by sched/core itself and the tracing
@ -22,7 +22,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
1 file changed, 1 insertion(+)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 3df110e8c6f9..9c4a9f0a627b 100644
index b658f0147c3b..7a39d56f6a6b 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -1013,6 +1013,7 @@ int __migrate_disabled(struct task_struct *p)

6
debian/patches-rt/0029-arm-at91-do-not-disable-enable-clocks-in-a-row.patch vendored
View File

@ -1,8 +1,8 @@
From 245bd7bd92ce193e01ef35fbdaae505d5eefd28b Mon Sep 17 00:00:00 2001
From 35e0294d43f7c53bdb7ecba19df0710037d888ec Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 9 Mar 2016 10:51:06 +0100
Subject: [PATCH 029/269] arm: at91: do not disable/enable clocks in a row
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 029/283] arm: at91: do not disable/enable clocks in a row
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Currently the driver will disable the clock and enable it one line later
if it is switching from periodic mode into one shot.

6
debian/patches-rt/0030-clocksource-TCLIB-Allow-higher-clock-rates-for-clock.patch vendored
View File

@ -1,12 +1,12 @@
From 7b123775c97399cd5ca5394392bf72c5d73f2808 Mon Sep 17 00:00:00 2001
From 4d4322de76f7b52df1529acfc6e5fc46e25761f1 Mon Sep 17 00:00:00 2001
From: Benedikt Spranger <b.spranger@linutronix.de>
Date: Mon, 8 Mar 2010 18:57:04 +0100
Subject: [PATCH 030/269] clocksource: TCLIB: Allow higher clock rates for
Subject: [PATCH 030/283] clocksource: TCLIB: Allow higher clock rates for
clock events
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
As default the TCLIB uses the 32KiHz base clock rate for clock events.
Add a compile time selection to allow higher clock resulution.

10
debian/patches-rt/0031-timekeeping-Split-jiffies-seqlock.patch vendored
View File

@ -1,8 +1,8 @@
From 5a0bfb35b3b826135a39a8e8744e9926b5be7607 Mon Sep 17 00:00:00 2001
From 64f770d93319861d308ce265a4389e4ca0a6ed5f Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 14 Feb 2013 22:36:59 +0100
Subject: [PATCH 031/269] timekeeping: Split jiffies seqlock
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 031/283] timekeeping: Split jiffies seqlock
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Replace jiffies_lock seqlock with a simple seqcounter and a rawlock so
it can be taken in atomic context on RT.
@ -136,10 +136,10 @@ index 5b33e2f5c0ed..54fd344ef973 100644
ts->timer_expires_base = basemono;
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 7846ce24ecc0..68cf97548cba 100644
index 443edcddac8a..0517bc42c6b6 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -2417,8 +2417,10 @@ EXPORT_SYMBOL(hardpps);
@@ -2418,8 +2418,10 @@ EXPORT_SYMBOL(hardpps);
*/
void xtime_update(unsigned long ticks)
{

8
debian/patches-rt/0032-signal-Revert-ptrace-preempt-magic.patch vendored
View File

@ -1,8 +1,8 @@
From a9a18a8c88bd90bdac5f33690be17244dc22bd22 Mon Sep 17 00:00:00 2001
From 8cf90f7e58f51438a7ec0e4e704918afaa450ff1 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 21 Sep 2011 19:57:12 +0200
Subject: [PATCH 032/269] signal: Revert ptrace preempt magic
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 032/283] signal: Revert ptrace preempt magic
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Upstream commit '53da1d9456fe7f8 fix ptrace slowness' is nothing more
than a bandaid around the ptrace design trainwreck. It's not a
@ -14,7 +14,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
1 file changed, 8 deletions(-)
diff --git a/kernel/signal.c b/kernel/signal.c
index 9102d60fc5c6..f29def2be652 100644
index 0e6bc3049427..d5a9646b3538 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -2094,15 +2094,7 @@ static void ptrace_stop(int exit_code, int why, int clear_code, siginfo_t *info)

6
debian/patches-rt/0033-net-sched-Use-msleep-instead-of-yield.patch vendored
View File

@ -1,8 +1,8 @@
From b1e277ed2b65bf647c2a6dc2d103ffe5aa2e4fa7 Mon Sep 17 00:00:00 2001
From 882c4f88db8d6179773dc733e794fa504aef75e3 Mon Sep 17 00:00:00 2001
From: Marc Kleine-Budde <mkl@pengutronix.de>
Date: Wed, 5 Mar 2014 00:49:47 +0100
Subject: [PATCH 033/269] net: sched: Use msleep() instead of yield()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 033/283] net: sched: Use msleep() instead of yield()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
On PREEMPT_RT enabled systems the interrupt handler run as threads at prio 50
(by default). If a high priority userspace process tries to shut down a busy

6
debian/patches-rt/0034-dm-rq-remove-BUG_ON-irqs_disabled-check.patch vendored
View File

@ -1,8 +1,8 @@
From 812137beb49a5dea2e269ea9739d0ed291e27375 Mon Sep 17 00:00:00 2001
From ea6d238547b58b5fe9ce953cd818ef8bf6cb8915 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 27 Mar 2018 16:24:15 +0200
Subject: [PATCH 034/269] dm rq: remove BUG_ON(!irqs_disabled) check
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 034/283] dm rq: remove BUG_ON(!irqs_disabled) check
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
In commit 052189a2ec95 ("dm: remove superfluous irq disablement in
dm_request_fn") the spin_lock_irq() was replaced with spin_lock() + a

8
debian/patches-rt/0035-usb-do-no-disable-interrupts-in-giveback.patch vendored
View File

@ -1,8 +1,8 @@
From e958966734633c26363abc8920eca9c38e5cd7ce Mon Sep 17 00:00:00 2001
From b91ae27f3efa2e15087397591db35dd1d11f5120 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 8 Nov 2013 17:34:54 +0100
Subject: [PATCH 035/269] usb: do no disable interrupts in giveback
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 035/283] usb: do no disable interrupts in giveback
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Since commit 94dfd7ed ("USB: HCD: support giveback of URB in tasklet
context") the USB code disables interrupts before invoking the complete
@ -20,7 +20,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
1 file changed, 3 deletions(-)
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 1c21955fe7c0..7863dec34f0b 100644
index b82a7d787add..2f3015356124 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -1738,7 +1738,6 @@ static void __usb_hcd_giveback_urb(struct urb *urb)

6
debian/patches-rt/0036-rt-Provide-PREEMPT_RT_BASE-config-switch.patch vendored
View File

@ -1,8 +1,8 @@
From 588e8fb01ec7915ef280606b80bd605f49c56915 Mon Sep 17 00:00:00 2001
From 79f8ad95ffc5f1cd2ac721ab3d01291d4ad055df Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 17 Jun 2011 12:39:57 +0200
Subject: [PATCH 036/269] rt: Provide PREEMPT_RT_BASE config switch
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 036/283] rt: Provide PREEMPT_RT_BASE config switch
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Introduce PREEMPT_RT_BASE which enables parts of
PREEMPT_RT_FULL. Forces interrupt threading and enables some of the RT

6
debian/patches-rt/0037-cpumask-Disable-CONFIG_CPUMASK_OFFSTACK-for-RT.patch vendored
View File

@ -1,8 +1,8 @@
From 9480b8b41cb649337466e43807eff3816a9530bc Mon Sep 17 00:00:00 2001
From 75df679c581581978487f6f6de91bf86a9f72e7c Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 14 Dec 2011 01:03:49 +0100
Subject: [PATCH 037/269] cpumask: Disable CONFIG_CPUMASK_OFFSTACK for RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 037/283] cpumask: Disable CONFIG_CPUMASK_OFFSTACK for RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
There are "valid" GFP_ATOMIC allocations such as

8
debian/patches-rt/0038-jump-label-disable-if-stop_machine-is-used.patch vendored
View File

@ -1,8 +1,8 @@
From d23a435dc809c84e3185683681ef735f2097fe57 Mon Sep 17 00:00:00 2001
From b5d77d6b4b4bcead77cd720e8a93f4ae78420034 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 8 Jul 2015 17:14:48 +0200
Subject: [PATCH 038/269] jump-label: disable if stop_machine() is used
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 038/283] jump-label: disable if stop_machine() is used
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Some architectures are using stop_machine() while switching the opcode which
leads to latency spikes.
@ -25,7 +25,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index cd4c74daf71e..27a5f0b9ddc7 100644
index 51794c7fa6d5..7d11242a37d2 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -51,7 +51,7 @@ config ARM

10
debian/patches-rt/0039-kconfig-Disable-config-options-which-are-not-RT-comp.patch vendored
View File

@ -1,9 +1,9 @@
From 6c83d4802fcd91010b16a5a69456c7370cd10f9f Mon Sep 17 00:00:00 2001
From 94fd428643474b867a8cac432d7d911a5250c367 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 24 Jul 2011 12:11:43 +0200
Subject: [PATCH 039/269] kconfig: Disable config options which are not RT
Subject: [PATCH 039/283] kconfig: Disable config options which are not RT
compatible
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Disable stuff which is known to have issues on RT
@ -14,7 +14,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/Kconfig b/arch/Kconfig
index 6801123932a5..42b9062b9dbf 100644
index a336548487e6..3f537b264852 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -28,6 +28,7 @@ config OPROFILE
@ -26,7 +26,7 @@ index 6801123932a5..42b9062b9dbf 100644
select RING_BUFFER_ALLOW_SWAP
help
diff --git a/mm/Kconfig b/mm/Kconfig
index de64ea658716..438460486a5b 100644
index b457e94ae618..0dddbb2a3282 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -377,7 +377,7 @@ config NOMMU_INITIAL_TRIM_EXCESS

8
debian/patches-rt/0040-lockdep-disable-self-test.patch vendored
View File

@ -1,11 +1,11 @@
From 968d103b4727308889b77f3fa556e149bba6d56c Mon Sep 17 00:00:00 2001
From 1a9e9b418236c18717a91955eeafe5bd72a00598 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 17 Oct 2017 16:36:18 +0200
Subject: [PATCH 040/269] lockdep: disable self-test
Subject: [PATCH 040/283] lockdep: disable self-test
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
The self-test wasn't always 100% accurate for RT. We disabled a few
tests which failed because they had a different semantic for RT. Some
@ -18,7 +18,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 4966c4fbe7f7..92e7d88946f7 100644
index 3dea52f7be9c..1504e6aa8418 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1207,7 +1207,7 @@ config DEBUG_ATOMIC_SLEEP

12
debian/patches-rt/0041-mm-Allow-only-slub-on-RT.patch vendored
View File

@ -1,8 +1,8 @@
From 16680836f36c75ccaff96ab3155869144b0dd028 Mon Sep 17 00:00:00 2001
From 75102ff5e253e5ababc30c7512e0c07f2b7dc297 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:44:03 -0500
Subject: [PATCH 041/269] mm: Allow only slub on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 041/283] mm: Allow only slub on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Disable SLAB and SLOB on -RT. Only SLUB is adopted to -RT needs.
@ -13,10 +13,10 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
1 file changed, 2 insertions(+)
diff --git a/init/Kconfig b/init/Kconfig
index 864af10bb1b9..f3f073942c30 100644
index 47035b5a46f6..ae9a0113a699 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1634,6 +1634,7 @@ choice
@@ -1637,6 +1637,7 @@ choice
config SLAB
bool "SLAB"
@ -24,7 +24,7 @@ index 864af10bb1b9..f3f073942c30 100644
select HAVE_HARDENED_USERCOPY_ALLOCATOR
help
The regular slab allocator that is established and known to work
@@ -1654,6 +1655,7 @@ config SLUB
@@ -1657,6 +1658,7 @@ config SLUB
config SLOB
depends on EXPERT
bool "SLOB (Simple Allocator)"

6
debian/patches-rt/0042-locking-Disable-spin-on-owner-for-RT.patch vendored
View File

@ -1,11 +1,11 @@
From a506cf490ae3e346c6082877f109fcf34568f22d Mon Sep 17 00:00:00 2001
From 32697a0be9afdc5c631cc3d232a298b5880ed65c Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 17 Jul 2011 21:51:45 +0200
Subject: [PATCH 042/269] locking: Disable spin on owner for RT
Subject: [PATCH 042/283] locking: Disable spin on owner for RT
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Drop spin on owner for mutex / rwsem. We are most likely not using it
but…

6
debian/patches-rt/0043-rcu-Disable-RCU_FAST_NO_HZ-on-RT.patch vendored
View File

@ -1,8 +1,8 @@
From 30987f403875e211eee90cac11127e04b1a27c73 Mon Sep 17 00:00:00 2001
From 708879e986c1b552ee69d6444b808a196bba0f5f Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 28 Oct 2012 13:26:09 +0000
Subject: [PATCH 043/269] rcu: Disable RCU_FAST_NO_HZ on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 043/283] rcu: Disable RCU_FAST_NO_HZ on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
This uses a timer_list timer from the irq disabled guts of the idle
code. Disable it for now to prevent wreckage.

6
debian/patches-rt/0044-rcu-make-RCU_BOOST-default-on-RT.patch vendored
View File

@ -1,8 +1,8 @@
From 709173f4678f7f2f0b834e508d8044821d1c2354 Mon Sep 17 00:00:00 2001
From a14822b6d5fcc441064faf3edc2f91b5d461e703 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 21 Mar 2014 20:19:05 +0100
Subject: [PATCH 044/269] rcu: make RCU_BOOST default on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 044/283] rcu: make RCU_BOOST default on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Since it is no longer invoked from the softirq people run into OOM more
often if the priority of the RCU thread is too low. Making boosting

10
debian/patches-rt/0045-sched-Disable-CONFIG_RT_GROUP_SCHED-on-RT.patch vendored
View File

@ -1,8 +1,8 @@
From 56d2f884391ba7e98721f6639f87698e46429c7f Mon Sep 17 00:00:00 2001
From 36c33c65b461082612dffa7be01862b7bd55270e Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Mon, 18 Jul 2011 17:03:52 +0200
Subject: [PATCH 045/269] sched: Disable CONFIG_RT_GROUP_SCHED on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 045/283] sched: Disable CONFIG_RT_GROUP_SCHED on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Carsten reported problems when running:
@ -19,10 +19,10 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
1 file changed, 1 insertion(+)
diff --git a/init/Kconfig b/init/Kconfig
index f3f073942c30..707ca4d49944 100644
index ae9a0113a699..61e8b531649b 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -781,6 +781,7 @@ config CFS_BANDWIDTH
@@ -784,6 +784,7 @@ config CFS_BANDWIDTH
config RT_GROUP_SCHED
bool "Group scheduling for SCHED_RR/FIFO"
depends on CGROUP_SCHED

6
debian/patches-rt/0046-net-core-disable-NET_RX_BUSY_POLL.patch vendored
View File

@ -1,11 +1,11 @@
From a5a9737c0c6edf17eecb16a923a936432f11019e Mon Sep 17 00:00:00 2001
From f2b7e396c43d3607ee0a0090c7470da50f833e93 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat, 27 May 2017 19:02:06 +0200
Subject: [PATCH 046/269] net/core: disable NET_RX_BUSY_POLL
Subject: [PATCH 046/283] net/core: disable NET_RX_BUSY_POLL
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
sk_busy_loop() does preempt_disable() followed by a few operations which can
take sleeping locks and may get long.

10
debian/patches-rt/0047-arm-disable-NEON-in-kernel-mode.patch vendored
View File

@ -1,8 +1,8 @@
From 0db6c523b2591dbf527c759ef1b3718f96bc3c29 Mon Sep 17 00:00:00 2001
From 477660c22f2036e69299438b1292307ee1dba46b Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 1 Dec 2017 10:42:03 +0100
Subject: [PATCH 047/269] arm*: disable NEON in kernel mode
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 047/283] arm*: disable NEON in kernel mode
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
NEON in kernel mode is used by the crypto algorithms and raid6 code.
While the raid6 code looks okay, the crypto algorithms do not: NEON
@ -21,10 +21,10 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
3 files changed, 17 insertions(+), 16 deletions(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 27a5f0b9ddc7..91f4f80a6f24 100644
index 7d11242a37d2..e122dd212ab3 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -2161,7 +2161,7 @@ config NEON
@@ -2162,7 +2162,7 @@ config NEON
config KERNEL_MODE_NEON
bool "Support for NEON in kernel mode"

6
debian/patches-rt/0048-powerpc-Use-generic-rwsem-on-RT.patch vendored
View File

@ -1,8 +1,8 @@
From 24bc2177006a16588c79a438ba84122ec215135a Mon Sep 17 00:00:00 2001
From 297ef639cbc4bc3aac2e5a8835090136753796fc Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 14 Jul 2015 14:26:34 +0200
Subject: [PATCH 048/269] powerpc: Use generic rwsem on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 048/283] powerpc: Use generic rwsem on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Use generic code which uses rtmutex

6
debian/patches-rt/0049-powerpc-kvm-Disable-in-kernel-MPIC-emulation-for-PRE.patch vendored
View File

@ -1,9 +1,9 @@
From 86dd7e931e1f812e0fc9b44545ed1f9ffc80dcae Mon Sep 17 00:00:00 2001
From 3bead4e3fc7560659c1982ace99de374aa9df79c Mon Sep 17 00:00:00 2001
From: Bogdan Purcareata <bogdan.purcareata@freescale.com>
Date: Fri, 24 Apr 2015 15:53:13 +0000
Subject: [PATCH 049/269] powerpc/kvm: Disable in-kernel MPIC emulation for
Subject: [PATCH 049/283] powerpc/kvm: Disable in-kernel MPIC emulation for
PREEMPT_RT_FULL
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
While converting the openpic emulation code to use a raw_spinlock_t enables
guests to run on RT, there's still a performance issue. For interrupts sent in

6
debian/patches-rt/0050-powerpc-Disable-highmem-on-RT.patch vendored
View File

@ -1,8 +1,8 @@
From f5b4401c967f9ead16662b347d2082f8f2743205 Mon Sep 17 00:00:00 2001
From ae9000e3c66794249fbca61b8a71bcdf690910e0 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Mon, 18 Jul 2011 17:08:34 +0200
Subject: [PATCH 050/269] powerpc: Disable highmem on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 050/283] powerpc: Disable highmem on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
The current highmem handling on -RT is not compatible and needs fixups.

6
debian/patches-rt/0051-mips-Disable-highmem-on-RT.patch vendored
View File

@ -1,8 +1,8 @@
From 29b46bfd781d871ae857c940e6ef76454bf356c2 Mon Sep 17 00:00:00 2001
From 454e636edd0bb26495afb3850a37aa5e5214a4ed Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Mon, 18 Jul 2011 17:10:12 +0200
Subject: [PATCH 051/269] mips: Disable highmem on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 051/283] mips: Disable highmem on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
The current highmem handling on -RT is not compatible and needs fixups.

6
debian/patches-rt/0052-x86-Use-generic-rwsem_spinlocks-on-rt.patch vendored
View File

@ -1,8 +1,8 @@
From 789344b11534d2799fbc807496846f21869124b5 Mon Sep 17 00:00:00 2001
From 5c86aec91ae10f140d18bd33cd62783cdde0922d Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 26 Jul 2009 02:21:32 +0200
Subject: [PATCH 052/269] x86: Use generic rwsem_spinlocks on -rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 052/283] x86: Use generic rwsem_spinlocks on -rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Simplifies the separation of anon_rw_semaphores and rw_semaphores for
-rt.

6
debian/patches-rt/0053-leds-trigger-disable-CPU-trigger-on-RT.patch vendored
View File

@ -1,8 +1,8 @@
From 7554227ac04319dadc334245535dd1d21d258de0 Mon Sep 17 00:00:00 2001
From 9cd1a715d85ace3e9b1d3ae703eb16744dd3ebb6 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 23 Jan 2014 14:45:59 +0100
Subject: [PATCH 053/269] leds: trigger: disable CPU trigger on -RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 053/283] leds: trigger: disable CPU trigger on -RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
as it triggers:
|CPU: 0 PID: 0 Comm: swapper Not tainted 3.12.8-rt10 #141

6
debian/patches-rt/0054-cpufreq-drop-K8-s-driver-from-beeing-selected.patch vendored
View File

@ -1,8 +1,8 @@
From 57c3607ed990ada1d1636542d00bd3ed95e243da Mon Sep 17 00:00:00 2001
From f19ffb87fe48ba1e8904df670b13d52f8b9c08f1 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 9 Apr 2015 15:23:01 +0200
Subject: [PATCH 054/269] cpufreq: drop K8's driver from beeing selected
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 054/283] cpufreq: drop K8's driver from beeing selected
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Ralf posted a picture of a backtrace from

6
debian/patches-rt/0055-md-disable-bcache.patch vendored
View File

@ -1,11 +1,11 @@
From 53eb768ccfb675d61d67bd236402aa90434a6923 Mon Sep 17 00:00:00 2001
From 3b1c3bc41b87cd7a714ebfa5e88651d4f3326f2e Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 29 Aug 2013 11:48:57 +0200
Subject: [PATCH 055/269] md: disable bcache
Subject: [PATCH 055/283] md: disable bcache
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
It uses anon semaphores
|drivers/md/bcache/request.c: In function ‘cached_dev_write_complete’:

6
debian/patches-rt/0056-efi-Disable-runtime-services-on-RT.patch vendored
View File

@ -1,8 +1,8 @@
From 62309a1da779bde384a7645a7d3e2713520a76da Mon Sep 17 00:00:00 2001
From f0e7a6e0f76d2ab27a0c5ef0f7872d971ec1dd23 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 26 Jul 2018 15:03:16 +0200
Subject: [PATCH 056/269] efi: Disable runtime services on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 056/283] efi: Disable runtime services on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Based on meassurements the EFI functions get_variable /
get_next_variable take up to 2us which looks okay.

6
debian/patches-rt/0057-printk-Add-a-printk-kill-switch.patch vendored
View File

@ -1,8 +1,8 @@
From 09acfc4d67168f054485eb40955069fa2390a5ec Mon Sep 17 00:00:00 2001
From d1e9e20fe16f16a1665eabaa44a0f1c2a4cebfec Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 22 Jul 2011 17:58:40 +0200
Subject: [PATCH 057/269] printk: Add a printk kill switch
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 057/283] printk: Add a printk kill switch
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Add a prinkt-kill-switch. This is used from (NMI) watchdog to ensure that
it does not dead-lock with the early printk code.

6
debian/patches-rt/0058-printk-Add-force_early_printk-boot-param-to-help-wit.patch vendored
View File

@ -1,9 +1,9 @@
From 3dd75cbf0c1ddd8dc0a7c0492e86f7293a730145 Mon Sep 17 00:00:00 2001
From 3d881bc012788bea38e0bf55b03d9996eb40b1b9 Mon Sep 17 00:00:00 2001
From: Peter Zijlstra <peterz@infradead.org>
Date: Fri, 2 Sep 2011 14:41:29 +0200
Subject: [PATCH 058/269] printk: Add "force_early_printk" boot param to help
Subject: [PATCH 058/283] printk: Add "force_early_printk" boot param to help
with debugging
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Gives me an option to screw printk and actually see what the machine
says.

6
debian/patches-rt/0059-preempt-Provide-preempt_-_-no-rt-variants.patch vendored
View File

@ -1,8 +1,8 @@
From 31772df387205be3a95e3d0bc21b7b81a244f6df Mon Sep 17 00:00:00 2001
From 6a3ec551d9ea7e49f20d8f9d3d45fb8d9ca1b720 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 24 Jul 2009 12:38:56 +0200
Subject: [PATCH 059/269] preempt: Provide preempt_*_(no)rt variants
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 059/283] preempt: Provide preempt_*_(no)rt variants
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
RT needs a few preempt_disable/enable points which are not necessary
otherwise. Implement variants to avoid #ifdeffery.

14
debian/patches-rt/0060-futex-workaround-migrate_disable-enable-in-different.patch vendored
View File

@ -1,9 +1,9 @@
From c78bd62f56b86aa7717ac7a79e288fa8b3978573 Mon Sep 17 00:00:00 2001
From 02487d0393920e03426a2378e40bc7547193c3aa Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 8 Mar 2017 14:23:35 +0100
Subject: [PATCH 060/269] futex: workaround migrate_disable/enable in different
Subject: [PATCH 060/283] futex: workaround migrate_disable/enable in different
context
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
migrate_disable()/migrate_enable() takes a different path in atomic() vs
!atomic() context. These little hacks ensure that we don't underflow / overflow
@ -17,10 +17,10 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
1 file changed, 19 insertions(+)
diff --git a/kernel/futex.c b/kernel/futex.c
index 5a26d843a015..1bd0950bea4e 100644
index afdc5eadce6e..304f07d08c95 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -2859,6 +2859,14 @@ static int futex_lock_pi(u32 __user *uaddr, unsigned int flags,
@@ -2876,6 +2876,14 @@ static int futex_lock_pi(u32 __user *uaddr, unsigned int flags,
* before __rt_mutex_start_proxy_lock() is done.
*/
raw_spin_lock_irq(&q.pi_state->pi_mutex.wait_lock);
@ -35,7 +35,7 @@ index 5a26d843a015..1bd0950bea4e 100644
spin_unlock(q.lock_ptr);
/*
* __rt_mutex_start_proxy_lock() unconditionally enqueues the @rt_waiter
@@ -2867,6 +2875,7 @@ static int futex_lock_pi(u32 __user *uaddr, unsigned int flags,
@@ -2884,6 +2892,7 @@ static int futex_lock_pi(u32 __user *uaddr, unsigned int flags,
*/
ret = __rt_mutex_start_proxy_lock(&q.pi_state->pi_mutex, &rt_waiter, current);
raw_spin_unlock_irq(&q.pi_state->pi_mutex.wait_lock);
@ -43,7 +43,7 @@ index 5a26d843a015..1bd0950bea4e 100644
if (ret) {
if (ret == 1)
@@ -3015,11 +3024,21 @@ static int futex_unlock_pi(u32 __user *uaddr, unsigned int flags)
@@ -3032,11 +3041,21 @@ static int futex_unlock_pi(u32 __user *uaddr, unsigned int flags)
* rt_waiter. Also see the WARN in wake_futex_pi().
*/
raw_spin_lock_irq(&pi_state->pi_mutex.wait_lock);

6
debian/patches-rt/0061-rt-Add-local-irq-locks.patch vendored
View File

@ -1,8 +1,8 @@
From 5b811e266fa9c293395c73c7a21e7e5c5a51deb1 Mon Sep 17 00:00:00 2001
From 1e4195bafdb198d778c98aece678c7b16cd035c8 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Mon, 20 Jun 2011 09:03:47 +0200
Subject: [PATCH 061/269] rt: Add local irq locks
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 061/283] rt: Add local irq locks
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Introduce locallock. For !RT this maps to preempt_disable()/
local_irq_disable() so there is not much that changes. For RT this will

6
debian/patches-rt/0062-locallock-provide-get-put-_locked_ptr-variants.patch vendored
View File

@ -1,8 +1,8 @@
From 251ca7087d744d8b174f8488d2f7ea42cedaccf3 Mon Sep 17 00:00:00 2001
From 58ee9341c0c3521cdb41239c83807a98cef97bd0 Mon Sep 17 00:00:00 2001
From: Julia Cartwright <julia@ni.com>
Date: Mon, 7 May 2018 08:58:56 -0500
Subject: [PATCH 062/269] locallock: provide {get,put}_locked_ptr() variants
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 062/283] locallock: provide {get,put}_locked_ptr() variants
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Provide a set of locallocked accessors for pointers to per-CPU data;
this is useful for dynamically-allocated per-CPU regions, for example.

6
debian/patches-rt/0063-mm-scatterlist-Do-not-disable-irqs-on-RT.patch vendored
View File

@ -1,8 +1,8 @@
From bdf1c5db6f1c5d8fe706592f9373849948d65813 Mon Sep 17 00:00:00 2001
From a6c38f0b349a8921a1bfe4dcef5972cf1e2224a0 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 3 Jul 2009 08:44:34 -0500
Subject: [PATCH 063/269] mm/scatterlist: Do not disable irqs on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 063/283] mm/scatterlist: Do not disable irqs on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
For -RT it is enough to keep pagefault disabled (which is currently handled by
kmap_atomic()).

12
debian/patches-rt/0064-signal-x86-Delay-calling-signals-in-atomic.patch vendored
View File

@ -1,8 +1,8 @@
From d892f2116baf1643d4d3c792231c687fa49b71ce Mon Sep 17 00:00:00 2001
From f994c5279fb1173131e67419c540713cd25a59e3 Mon Sep 17 00:00:00 2001
From: Oleg Nesterov <oleg@redhat.com>
Date: Tue, 14 Jul 2015 14:26:34 +0200
Subject: [PATCH 064/269] signal/x86: Delay calling signals in atomic
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 064/283] signal/x86: Delay calling signals in atomic
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
On x86_64 we must disable preemption before we enable interrupts
for stack faults, int3 and debugging, because the current task is using
@ -38,10 +38,10 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
4 files changed, 59 insertions(+), 2 deletions(-)
diff --git a/arch/x86/entry/common.c b/arch/x86/entry/common.c
index 3b2490b81918..ec46ee700791 100644
index 8353348ddeaf..91676b0d2d4c 100644
--- a/arch/x86/entry/common.c
+++ b/arch/x86/entry/common.c
@@ -151,6 +151,13 @@ static void exit_to_usermode_loop(struct pt_regs *regs, u32 cached_flags)
@@ -152,6 +152,13 @@ static void exit_to_usermode_loop(struct pt_regs *regs, u32 cached_flags)
if (cached_flags & _TIF_NEED_RESCHED)
schedule();
@ -95,7 +95,7 @@ index df39ad5916e7..535e57775208 100644
size_t sas_ss_size;
unsigned int sas_ss_flags;
diff --git a/kernel/signal.c b/kernel/signal.c
index f29def2be652..57c48b3d1491 100644
index d5a9646b3538..56edb0580a3a 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1268,8 +1268,8 @@ int do_send_sig_info(int sig, struct siginfo *info, struct task_struct *p,

6
debian/patches-rt/0065-x86-signal-delay-calling-signals-on-32bit.patch vendored
View File

@ -1,8 +1,8 @@
From 6828880f532efdf1ded1248f5e0ea555e9520eda Mon Sep 17 00:00:00 2001
From 77f58646e4722365c6b6b91802d5feddd57dff34 Mon Sep 17 00:00:00 2001
From: Yang Shi <yang.shi@linaro.org>
Date: Thu, 10 Dec 2015 10:58:51 -0800
Subject: [PATCH 065/269] x86/signal: delay calling signals on 32bit
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 065/283] x86/signal: delay calling signals on 32bit
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
When running some ptrace single step tests on x86-32 machine, the below problem
is triggered:

6
debian/patches-rt/0066-buffer_head-Replace-bh_uptodate_lock-for-rt.patch vendored
View File

@ -1,8 +1,8 @@
From 651a49976e8e481190cc465a5590940a6f6bbcf9 Mon Sep 17 00:00:00 2001
From 86a1cbd4eddbe083ad0331f0eeec002f6fa7b322 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 18 Mar 2011 09:18:52 +0100
Subject: [PATCH 066/269] buffer_head: Replace bh_uptodate_lock for -rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 066/283] buffer_head: Replace bh_uptodate_lock for -rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Wrap the bit_spin_lock calls into a separate inline and add the RT
replacements with a real spinlock.

8
debian/patches-rt/0067-fs-jbd-jbd2-Make-state-lock-and-journal-head-lock-rt.patch vendored
View File

@ -1,9 +1,9 @@
From 6107effb93a85ff7db4857dca4a0acc2ec4a7d5c Mon Sep 17 00:00:00 2001
From a0ac5bf9b179bff5745bd4c15d14cb2ec5c81c16 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 18 Mar 2011 10:11:25 +0100
Subject: [PATCH 067/269] fs: jbd/jbd2: Make state lock and journal head lock
Subject: [PATCH 067/283] fs: jbd/jbd2: Make state lock and journal head lock
rt safe
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
bit_spin_locks break under RT.
@ -45,7 +45,7 @@ index 8a1bcfb145d7..5869330d1f38 100644
}
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index b708e5169d1d..018665350951 100644
index 583b82b5a1e9..57f4ad8d45a5 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -347,32 +347,56 @@ static inline struct journal_head *bh2jh(struct buffer_head *bh)

6
debian/patches-rt/0068-list_bl-Make-list-head-locking-RT-safe.patch vendored
View File

@ -1,8 +1,8 @@
From 44a67462ebab9e354cfa669144248912fa92ca24 Mon Sep 17 00:00:00 2001
From 575440eb3e514693de4892b3589bd02b584834ef Mon Sep 17 00:00:00 2001
From: Paul Gortmaker <paul.gortmaker@windriver.com>
Date: Fri, 21 Jun 2013 15:07:25 -0400
Subject: [PATCH 068/269] list_bl: Make list head locking RT safe
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 068/283] list_bl: Make list head locking RT safe
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
As per changes in include/linux/jbd_common.h for avoiding the
bit_spin_locks on RT ("fs: jbd/jbd2: Make state lock and journal

6
debian/patches-rt/0069-list_bl-fixup-bogus-lockdep-warning.patch vendored
View File

@ -1,8 +1,8 @@
From 20f64514264a9d0ea1533f4743f542a1fb056a16 Mon Sep 17 00:00:00 2001
From 386260fdddeed151902355b8c816f9b166c1c2b8 Mon Sep 17 00:00:00 2001
From: Josh Cartwright <joshc@ni.com>
Date: Thu, 31 Mar 2016 00:04:25 -0500
Subject: [PATCH 069/269] list_bl: fixup bogus lockdep warning
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 069/283] list_bl: fixup bogus lockdep warning
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
At first glance, the use of 'static inline' seems appropriate for
INIT_HLIST_BL_HEAD().

6
debian/patches-rt/0070-genirq-Disable-irqpoll-on-rt.patch vendored
View File

@ -1,8 +1,8 @@
From 7520cd851f5733f5e69fe73008893f4be48506f9 Mon Sep 17 00:00:00 2001
From d884d2bff2d643468c5e37727aa29e8f5c88b3be Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:29:57 -0500
Subject: [PATCH 070/269] genirq: Disable irqpoll on -rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 070/283] genirq: Disable irqpoll on -rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Creates long latencies for no value

21
debian/patches-rt/0071-genirq-Force-interrupt-thread-on-RT.patch vendored
View File

@ -1,8 +1,8 @@
From 22860bd2c33dc3abc1b0aa695f8f455595762a93 Mon Sep 17 00:00:00 2001
From 91f768aed73cc93826112811b4e622dce0c1915f Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 3 Apr 2011 11:57:29 +0200
Subject: [PATCH 071/269] genirq: Force interrupt thread on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 071/283] genirq: Force interrupt thread on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Force threaded_irqs and optimize the code (force_irqthreads) in regard
to this.
@ -13,11 +13,9 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
kernel/irq/manage.c | 2 ++
2 files changed, 6 insertions(+)
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index eeceac3376fc..315f852b4981 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -427,7 +427,11 @@ extern int irq_set_irqchip_state(unsigned int irq, enum irqchip_irq_state which,
@@ -427,7 +427,11 @@ extern int irq_set_irqchip_state(unsigne
bool state);
#ifdef CONFIG_IRQ_FORCED_THREADING
@ -29,11 +27,9 @@ index eeceac3376fc..315f852b4981 100644
#else
#define force_irqthreads (0)
#endif
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 5c0ba5ca5930..94a18cf54293 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -23,6 +23,7 @@
@@ -24,6 +24,7 @@
#include "internals.h"
#ifdef CONFIG_IRQ_FORCED_THREADING
@ -41,14 +37,11 @@ index 5c0ba5ca5930..94a18cf54293 100644
__read_mostly bool force_irqthreads;
EXPORT_SYMBOL_GPL(force_irqthreads);
@@ -32,6 +33,7 @@ static int __init setup_forced_irqthreads(char *arg)
@@ -33,6 +34,7 @@ static int __init setup_forced_irqthread
return 0;
}
early_param("threadirqs", setup_forced_irqthreads);
+# endif
#endif
static void __synchronize_hardirq(struct irq_desc *desc)
--
2.20.1
static void __synchronize_hardirq(struct irq_desc *desc, bool sync_chip)

8
debian/patches-rt/0072-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch vendored
View File

@ -1,9 +1,9 @@
From 3c22477fe8ef4919a3fb0314834751ad2e2134d8 Mon Sep 17 00:00:00 2001
From 6ec0e8d1526370de73bd18c096f7f96827594308 Mon Sep 17 00:00:00 2001
From: Peter Zijlstra <peterz@infradead.org>
Date: Mon, 28 May 2018 15:24:20 +0200
Subject: [PATCH 072/269] Split IRQ-off and zone->lock while freeing pages from
Subject: [PATCH 072/283] Split IRQ-off and zone->lock while freeing pages from
PCP list #1
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Split the IRQ-off section while accessing the PCP list from zone->lock
while freeing pages.
@ -18,7 +18,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
1 file changed, 52 insertions(+), 30 deletions(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 8e6932a140b8..8c10f34364c0 100644
index 2d04bd2e1ced..332b48f38d1e 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1095,7 +1095,7 @@ static inline void prefetch_buddy(struct page *page)

8
debian/patches-rt/0073-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch vendored
View File

@ -1,9 +1,9 @@
From e4639c8f6abcfb4b8b26aa296089349739103578 Mon Sep 17 00:00:00 2001
From f9efb76f365f15eaca8f29ee7f2648de90925a76 Mon Sep 17 00:00:00 2001
From: Peter Zijlstra <peterz@infradead.org>
Date: Mon, 28 May 2018 15:24:21 +0200
Subject: [PATCH 073/269] Split IRQ-off and zone->lock while freeing pages from
Subject: [PATCH 073/283] Split IRQ-off and zone->lock while freeing pages from
PCP list #2
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Split the IRQ-off section while accessing the PCP list from zone->lock
while freeing pages.
@ -18,7 +18,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
1 file changed, 50 insertions(+), 10 deletions(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 8c10f34364c0..4d630aebd84f 100644
index 332b48f38d1e..55cee9a17a36 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1105,8 +1105,8 @@ static inline void prefetch_buddy(struct page *page)

10
debian/patches-rt/0074-mm-SLxB-change-list_lock-to-raw_spinlock_t.patch vendored
View File

@ -1,8 +1,8 @@
From 21da9341b8a6c5d9308bf0c2fa3fe4647749f125 Mon Sep 17 00:00:00 2001
From 302fcfd8e9527e8f7b6ec9d733a5a3a760af64ef Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Mon, 28 May 2018 15:24:22 +0200
Subject: [PATCH 074/269] mm/SLxB: change list_lock to raw_spinlock_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 074/283] mm/SLxB: change list_lock to raw_spinlock_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
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
@ -19,7 +19,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
3 files changed, 73 insertions(+), 73 deletions(-)
diff --git a/mm/slab.c b/mm/slab.c
index b8e0ec74330f..21fe15fb9624 100644
index 46f21e73db2f..38f6609343b3 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -233,7 +233,7 @@ static void kmem_cache_node_init(struct kmem_cache_node *parent)
@ -369,7 +369,7 @@ index b8e0ec74330f..21fe15fb9624 100644
}
num_objs = total_slabs * cachep->num;
active_slabs = total_slabs - free_slabs;
@@ -4333,13 +4333,13 @@ static int leaks_show(struct seq_file *m, void *p)
@@ -4338,13 +4338,13 @@ static int leaks_show(struct seq_file *m, void *p)
for_each_kmem_cache_node(cachep, node, n) {
check_irq_on();

6
debian/patches-rt/0075-mm-SLUB-delay-giving-back-empty-slubs-to-IRQ-enabled.patch vendored
View File

@ -1,9 +1,9 @@
From 7950585d96adfc3a0b99a639041dbaed50e2a496 Mon Sep 17 00:00:00 2001
From 9da82885e5b9187857b5fdc2eaa482752e814fbc Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 21 Jun 2018 17:29:19 +0200
Subject: [PATCH 075/269] mm/SLUB: delay giving back empty slubs to IRQ enabled
Subject: [PATCH 075/283] mm/SLUB: delay giving back empty slubs to IRQ enabled
regions
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
__free_slab() is invoked with disabled interrupts which increases the
irq-off time while __free_pages() is doing the work.

12
debian/patches-rt/0076-mm-page_alloc-rt-friendly-per-cpu-pages.patch vendored
View File

@ -1,8 +1,8 @@
From 31695882006c45fad86890ceff90dd7d65ea5dd3 Mon Sep 17 00:00:00 2001
From 4cd1dede47de27525631161fdc6cdfc9d8608c31 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:29:37 -0500
Subject: [PATCH 076/269] mm: page_alloc: rt-friendly per-cpu pages
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 076/283] mm: page_alloc: rt-friendly per-cpu pages
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
rt-friendly per-cpu pages: convert the irqs-off per-cpu locking
method into a preemptible, explicit-per-cpu-locks method.
@ -18,7 +18,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
1 file changed, 43 insertions(+), 20 deletions(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 4d630aebd84f..4d11ec179aa7 100644
index 55cee9a17a36..99b3861b1ef6 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -60,6 +60,7 @@
@ -216,7 +216,7 @@ index 4d630aebd84f..4d11ec179aa7 100644
return NULL;
}
@@ -8094,7 +8117,7 @@ void zone_pcp_reset(struct zone *zone)
@@ -8096,7 +8119,7 @@ void zone_pcp_reset(struct zone *zone)
struct per_cpu_pageset *pset;
/* avoid races with drain_pages() */
@ -225,7 +225,7 @@ index 4d630aebd84f..4d11ec179aa7 100644
if (zone->pageset != &boot_pageset) {
for_each_online_cpu(cpu) {
pset = per_cpu_ptr(zone->pageset, cpu);
@@ -8103,7 +8126,7 @@ void zone_pcp_reset(struct zone *zone)
@@ -8105,7 +8128,7 @@ void zone_pcp_reset(struct zone *zone)
free_percpu(zone->pageset);
zone->pageset = &boot_pageset;
}

10
debian/patches-rt/0077-mm-swap-Convert-to-percpu-locked.patch vendored
View File

@ -1,8 +1,8 @@
From 25ce0ae0ad1ef1ed724757c0137241db28a8208d Mon Sep 17 00:00:00 2001
From 98c01e9756e741d807b1198eb885a26e0998fcde Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:29:51 -0500
Subject: [PATCH 077/269] mm/swap: Convert to percpu locked
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 077/283] mm/swap: Convert to percpu locked
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Replace global locks (get_cpu + local_irq_save) with "local_locks()".
Currently there is one of for "rotate" and one for "swap".
@ -56,10 +56,10 @@ index faca45ebe62d..f8ccb9d9daa3 100644
cc->last_migrated_pfn = 0;
}
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 4d11ec179aa7..a01c15fdb723 100644
index 99b3861b1ef6..1679f5883307 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -7205,8 +7205,9 @@ void __init free_area_init(unsigned long *zones_size)
@@ -7207,8 +7207,9 @@ void __init free_area_init(unsigned long *zones_size)
static int page_alloc_cpu_dead(unsigned int cpu)
{

6
debian/patches-rt/0078-mm-perform-lru_add_drain_all-remotely.patch vendored
View File

@ -1,8 +1,8 @@
From c6e0c51ac7fe1d0892449e41e6792babe4d7c3fa Mon Sep 17 00:00:00 2001
From f4f53c9fdf55676d783a4fbad5049f39401a0542 Mon Sep 17 00:00:00 2001
From: Luiz Capitulino <lcapitulino@redhat.com>
Date: Fri, 27 May 2016 15:03:28 +0200
Subject: [PATCH 078/269] mm: perform lru_add_drain_all() remotely
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 078/283] mm: perform lru_add_drain_all() remotely
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
lru_add_drain_all() works by scheduling lru_add_drain_cpu() to run
on all CPUs that have non-empty LRU pagevecs and then waiting for

6
debian/patches-rt/0079-mm-vmstat-Protect-per-cpu-variables-with-preempt-dis.patch vendored
View File

@ -1,9 +1,9 @@
From b0971a2847fd9cd9f59eb19e6761f6800a33150d Mon Sep 17 00:00:00 2001
From 3e1b4a0068b41c1782264376379985fb992bd41e Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:30:13 -0500
Subject: [PATCH 079/269] mm/vmstat: Protect per cpu variables with preempt
Subject: [PATCH 079/283] mm/vmstat: Protect per cpu variables with preempt
disable on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Disable preemption on -RT for the vmstat code. On vanila the code runs in
IRQ-off regions while on -RT it is not. "preempt_disable" ensures that the

6
debian/patches-rt/0080-ARM-Initialize-split-page-table-locks-for-vector-pag.patch vendored
View File

@ -1,9 +1,9 @@
From 1062ea19aa6e1c3dacb44d07747c89b4f66dadc2 Mon Sep 17 00:00:00 2001
From fb089e89b26bc5653a90d9983021813e15fa04d9 Mon Sep 17 00:00:00 2001
From: Frank Rowand <frank.rowand@am.sony.com>
Date: Sat, 1 Oct 2011 18:58:13 -0700
Subject: [PATCH 080/269] ARM: Initialize split page table locks for vector
Subject: [PATCH 080/283] ARM: Initialize split page table locks for vector
page
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Without this patch, ARM can not use SPLIT_PTLOCK_CPUS if
PREEMPT_RT_FULL=y because vectors_user_mapping() creates a

6
debian/patches-rt/0081-mm-Enable-SLUB-for-RT.patch vendored
View File

@ -1,8 +1,8 @@
From 7bd789a93c5b97d553b15fd8e446228d23456aff Mon Sep 17 00:00:00 2001
From b01d03c695bcba2149713f4425c806b5b5e3410d Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 25 Oct 2012 10:32:35 +0100
Subject: [PATCH 081/269] mm: Enable SLUB for RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 081/283] mm: Enable SLUB for RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Avoid the memory allocation in IRQ section

6
debian/patches-rt/0082-slub-Enable-irqs-for-__GFP_WAIT.patch vendored
View File

@ -1,8 +1,8 @@
From 11224977de88f7f3ddc92b29390c44fdf9a85820 Mon Sep 17 00:00:00 2001
From 14471a3281f661b8b8bccdb64820879a699fb2ad Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 9 Jan 2013 12:08:15 +0100
Subject: [PATCH 082/269] slub: Enable irqs for __GFP_WAIT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 082/283] slub: Enable irqs for __GFP_WAIT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
SYSTEM_RUNNING might be too late for enabling interrupts. Allocations
with GFP_WAIT can happen before that. So use this as an indicator.

10
debian/patches-rt/0083-slub-Disable-SLUB_CPU_PARTIAL.patch vendored
View File

@ -1,8 +1,8 @@
From b8b912f1bb257eb44228b3bdb7652c4d6dcda56b Mon Sep 17 00:00:00 2001
From fb6bfe69057a4177f5f5b273cace7ea5cbb5f649 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 15 Apr 2015 19:00:47 +0200
Subject: [PATCH 083/269] slub: Disable SLUB_CPU_PARTIAL
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 083/283] slub: Disable SLUB_CPU_PARTIAL
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
|BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:915
|in_atomic(): 1, irqs_disabled(): 0, pid: 87, name: rcuop/7
@ -37,10 +37,10 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/init/Kconfig b/init/Kconfig
index 707ca4d49944..68b4e39e421b 100644
index 61e8b531649b..b4e88fb19c26 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1698,7 +1698,7 @@ config SLAB_FREELIST_HARDENED
@@ -1701,7 +1701,7 @@ config SLAB_FREELIST_HARDENED
config SLUB_CPU_PARTIAL
default y

6
debian/patches-rt/0084-mm-memcontrol-Don-t-call-schedule_work_on-in-preempt.patch vendored
View File

@ -1,9 +1,9 @@
From 107eee1a14857d0aecad3c1f56f8b4cabbadcf89 Mon Sep 17 00:00:00 2001
From b64de8d2bb376abf6af01c84a94e1a201aecc6ec Mon Sep 17 00:00:00 2001
From: Yang Shi <yang.shi@windriver.com>
Date: Wed, 30 Oct 2013 11:48:33 -0700
Subject: [PATCH 084/269] mm/memcontrol: Don't call schedule_work_on in
Subject: [PATCH 084/283] mm/memcontrol: Don't call schedule_work_on in
preemption disabled context
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
The following trace is triggered when running ltp oom test cases:

6
debian/patches-rt/0085-mm-memcontrol-Replace-local_irq_disable-with-local-l.patch vendored
View File

@ -1,9 +1,9 @@
From b1fa5897c72583b68655f7eeca2e598dbfa8a0b5 Mon Sep 17 00:00:00 2001
From 3cb7dde3b41a847eefeac79763e46ce167c8521f Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 28 Jan 2015 17:14:16 +0100
Subject: [PATCH 085/269] mm/memcontrol: Replace local_irq_disable with local
Subject: [PATCH 085/283] mm/memcontrol: Replace local_irq_disable with local
locks
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
There are a few local_irq_disable() which then take sleeping locks. This
patch converts them local locks.

6
debian/patches-rt/0086-mm-zsmalloc-copy-with-get_cpu_var-and-locking.patch vendored
View File

@ -1,8 +1,8 @@
From 83e42c20f52f70e65d03b214fd9c8579b0128f47 Mon Sep 17 00:00:00 2001
From 50eae40f0475c039a273e2f5441f4ecda84d104e Mon Sep 17 00:00:00 2001
From: Mike Galbraith <umgwanakikbuti@gmail.com>
Date: Tue, 22 Mar 2016 11:16:09 +0100
Subject: [PATCH 086/269] mm/zsmalloc: copy with get_cpu_var() and locking
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 086/283] mm/zsmalloc: copy with get_cpu_var() and locking
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
get_cpu_var() disables preemption and triggers a might_sleep() splat later.
This is replaced with get_locked_var().

6
debian/patches-rt/0087-x86-mm-pat-disable-preemption-__split_large_page-aft.patch vendored
View File

@ -1,9 +1,9 @@
From 2543c80b6aadc59c70c6b6e912ed1e6a9965b3c0 Mon Sep 17 00:00:00 2001
From 3d625e1fb1f5adff8191330efe6d47017b0806bd Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 11 Dec 2018 21:53:43 +0100
Subject: [PATCH 087/269] x86/mm/pat: disable preemption __split_large_page()
Subject: [PATCH 087/283] x86/mm/pat: disable preemption __split_large_page()
after spin_lock()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Commit "x86/mm/pat: Disable preemption around __flush_tlb_all()" added a
warning if __flush_tlb_all() is invoked in preemptible context. On !RT

6
debian/patches-rt/0088-radix-tree-use-local-locks.patch vendored
View File

@ -1,8 +1,8 @@
From 11c1fef6d646f26007271dd7486fe14176d6e6f6 Mon Sep 17 00:00:00 2001
From 0a7a65a5055b7a5a94c57ee2dc8404116cff804b Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 25 Jan 2017 16:34:27 +0100
Subject: [PATCH 088/269] radix-tree: use local locks
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 088/283] radix-tree: use local locks
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
The preload functionality uses per-CPU variables and preempt-disable to
ensure that it does not switch CPUs during its usage. This patch adds

8
debian/patches-rt/0089-timers-Prepare-for-full-preemption.patch vendored
View File

@ -1,8 +1,8 @@
From 558451a44923dab908e500200b3f6f02fd6e4fae Mon Sep 17 00:00:00 2001
From 5bbf9de052f34cd8d685120f60da34937f2b0772 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:29:34 -0500
Subject: [PATCH 089/269] timers: Prepare for full preemption
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 089/283] timers: Prepare for full preemption
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
When softirqs can be preempted we need to make sure that cancelling
the timer from the active thread can not deadlock vs. a running timer
@ -30,7 +30,7 @@ index 7b066fd38248..54627d046b3a 100644
#else
# define del_timer_sync(t) del_timer(t)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 9c4a9f0a627b..ddf6282d9780 100644
index 7a39d56f6a6b..5de80f29ef57 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -498,11 +498,14 @@ void resched_cpu(int cpu)

10
debian/patches-rt/0090-x86-kvm-Require-const-tsc-for-RT.patch vendored
View File

@ -1,8 +1,8 @@
From ea0ad5586875098798cbf5d53bb21f2a5b82e537 Mon Sep 17 00:00:00 2001
From 49f95baf1667e4853406b63d30062b94afff4a25 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 6 Nov 2011 12:26:18 +0100
Subject: [PATCH 090/269] x86: kvm Require const tsc for RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 090/283] x86: kvm Require const tsc for RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Non constant TSC is a nightmare on bare metal already, but with
virtualization it becomes a complete disaster because the workarounds
@ -15,10 +15,10 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
1 file changed, 7 insertions(+)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 4a61e1609c97..0b4fd313b626 100644
index cea6568667c4..c90545667fd6 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -6725,6 +6725,13 @@ int kvm_arch_init(void *opaque)
@@ -6756,6 +6756,13 @@ int kvm_arch_init(void *opaque)
goto out;
}

8
debian/patches-rt/0091-pci-switchtec-Don-t-use-completion-s-wait-queue.patch vendored
View File

@ -1,8 +1,8 @@
From 8d76a7f3ba4284defc688a9131aa96e66eb1310a Mon Sep 17 00:00:00 2001
From 99fc3867798d14c5cff8c71c3872af84605d572d Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 4 Oct 2017 10:24:23 +0200
Subject: [PATCH 091/269] pci/switchtec: Don't use completion's wait queue
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 091/283] pci/switchtec: Don't use completion's wait queue
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
The poll callback is using completion's wait_queue_head_t member and
puts it in poll_wait() so the poll() caller gets a wakeup after command
@ -24,7 +24,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
1 file changed, 13 insertions(+), 9 deletions(-)
diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
index 37d0c15c9eeb..c396f3ef1852 100644
index 72db2e0ebced..77d4fb86d05b 100644
--- a/drivers/pci/switch/switchtec.c
+++ b/drivers/pci/switch/switchtec.c
@@ -43,10 +43,11 @@ struct switchtec_user {

6
debian/patches-rt/0092-wait.h-include-atomic.h.patch vendored
View File

@ -1,11 +1,11 @@
From f8a4f74be5bbce9f9664ebf005bb35f26875858f Mon Sep 17 00:00:00 2001
From 88037fc07062d469557427c97507d3f95d7ca3a6 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Mon, 28 Oct 2013 12:19:57 +0100
Subject: [PATCH 092/269] wait.h: include atomic.h
Subject: [PATCH 092/283] wait.h: include atomic.h
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
| CC init/main.o
|In file included from include/linux/mmzone.h:9:0,

6
debian/patches-rt/0093-work-simple-Simple-work-queue-implemenation.patch vendored
View File

@ -1,8 +1,8 @@
From 7cf55f71248f4f3c603383a84c73c5e44bfb9229 Mon Sep 17 00:00:00 2001
From 67478d9c6704de32600fd4363f3853bcdffcf391 Mon Sep 17 00:00:00 2001
From: Daniel Wagner <daniel.wagner@bmw-carit.de>
Date: Fri, 11 Jul 2014 15:26:11 +0200
Subject: [PATCH 093/269] work-simple: Simple work queue implemenation
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 093/283] work-simple: Simple work queue implemenation
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Provides a framework for enqueuing callbacks from irq context
PREEMPT_RT_FULL safe. The callbacks are executed in kthread context.

6
debian/patches-rt/0094-work-simple-drop-a-shit-statement-in-SWORK_EVENT_PEN.patch vendored
View File

@ -1,9 +1,9 @@
From ba25a567c5891e2b1acd586212b0fd92ce755e71 Mon Sep 17 00:00:00 2001
From 147a7822bfe8f027b88fa0ca82ae0d210e57bf34 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Mon, 10 Sep 2018 18:00:31 +0200
Subject: [PATCH 094/269] work-simple: drop a shit statement in
Subject: [PATCH 094/283] work-simple: drop a shit statement in
SWORK_EVENT_PENDING
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Dan Carpenter reported
| smatch warnings:

20
debian/patches-rt/0095-completion-Use-simple-wait-queues.patch vendored
View File

@ -1,8 +1,8 @@
From d24dfe04ec75d5329d870c0d20f56f2cba4563ec Mon Sep 17 00:00:00 2001
From 334dc78522991ee04c4704a53d24f0009be71172 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 11 Jan 2013 11:23:51 +0100
Subject: [PATCH 095/269] completion: Use simple wait queues
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 095/283] completion: Use simple wait queues
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Completions have no long lasting callbacks and therefor do not need
the complex waitqueue variant. Use simple waitqueues which reduces the
@ -161,10 +161,10 @@ index 73e06e9986d4..f426a0661aa0 100644
extern long prepare_to_swait_event(struct swait_queue_head *q, struct swait_queue *wait, int state);
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index abef759de7c8..69e418787f21 100644
index f5ce9f7ec132..0f00ba01376f 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -681,6 +681,10 @@ static int load_image_and_restore(void)
@@ -690,6 +690,10 @@ static int load_image_and_restore(void)
return error;
}
@ -175,7 +175,7 @@ index abef759de7c8..69e418787f21 100644
/**
* hibernate - Carry out system hibernation, including saving the image.
*/
@@ -694,6 +698,8 @@ int hibernate(void)
@@ -703,6 +707,8 @@ int hibernate(void)
return -EPERM;
}
@ -184,7 +184,7 @@ index abef759de7c8..69e418787f21 100644
lock_system_sleep();
/* The snapshot device should not be opened while we're running */
if (!atomic_add_unless(&snapshot_device_available, -1, 0)) {
@@ -772,6 +778,7 @@ int hibernate(void)
@@ -781,6 +787,7 @@ int hibernate(void)
atomic_inc(&snapshot_device_available);
Unlock:
unlock_system_sleep();
@ -320,10 +320,10 @@ index a1ad5b7d5521..755a58084978 100644
}
EXPORT_SYMBOL(completion_done);
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index ddf6282d9780..8272d920b749 100644
index 5de80f29ef57..337cc72e6a6a 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -7109,7 +7109,10 @@ void migrate_disable(void)
@@ -7116,7 +7116,10 @@ void migrate_disable(void)
return;
}
#ifdef CONFIG_SCHED_DEBUG
@ -335,7 +335,7 @@ index ddf6282d9780..8272d920b749 100644
#endif
if (p->migrate_disable) {
@@ -7139,7 +7142,10 @@ void migrate_enable(void)
@@ -7146,7 +7149,10 @@ void migrate_enable(void)
}
#ifdef CONFIG_SCHED_DEBUG

14
debian/patches-rt/0096-fs-aio-simple-simple-work.patch vendored
View File

@ -1,8 +1,8 @@
From 39010d30f3244de6b51646a0325b6292d8c84282 Mon Sep 17 00:00:00 2001
From b576efb7cedb58ffa58242d7b0df24d14063ba0e Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Mon, 16 Feb 2015 18:49:10 +0100
Subject: [PATCH 096/269] fs/aio: simple simple work
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Subject: [PATCH 096/283] fs/aio: simple simple work
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
|BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:768
|in_atomic(): 1, irqs_disabled(): 0, pid: 26, name: rcuos/2
@ -30,7 +30,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/fs/aio.c b/fs/aio.c
index 45d5ef8dd0a8..7db10b87c9bc 100644
index 911e23087dfb..16dcf8521c2c 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -42,6 +42,7 @@
@ -49,7 +49,7 @@ index 45d5ef8dd0a8..7db10b87c9bc 100644
/*
* signals when all in-flight requests are done
@@ -255,6 +257,7 @@ static int __init aio_setup(void)
@@ -265,6 +267,7 @@ static int __init aio_setup(void)
.mount = aio_mount,
.kill_sb = kill_anon_super,
};
@ -57,7 +57,7 @@ index 45d5ef8dd0a8..7db10b87c9bc 100644
aio_mnt = kern_mount(&aio_fs);
if (IS_ERR(aio_mnt))
panic("Failed to create aio fs mount.");
@@ -596,9 +599,9 @@ static void free_ioctx_reqs(struct percpu_ref *ref)
@@ -606,9 +609,9 @@ static void free_ioctx_reqs(struct percpu_ref *ref)
* and ctx->users has dropped to 0, so we know no more kiocbs can be submitted -
* now it's safe to cancel any that need to be.
*/
@ -69,7 +69,7 @@ index 45d5ef8dd0a8..7db10b87c9bc 100644
struct aio_kiocb *req;
spin_lock_irq(&ctx->ctx_lock);
@@ -616,6 +619,14 @@ static void free_ioctx_users(struct percpu_ref *ref)
@@ -626,6 +629,14 @@ static void free_ioctx_users(struct percpu_ref *ref)
percpu_ref_put(&ctx->reqs);
}

25
debian/patches-rt/0097-genirq-Do-not-invoke-the-affinity-callback-via-a-wor.patch vendored
View File

@ -1,9 +1,9 @@
From 2010005b28eea662f9390937d92563ea1c466e24 Mon Sep 17 00:00:00 2001
From bac483c38a96edeadc43fa8dcf03c3e57c41cc62 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 21 Aug 2013 17:48:46 +0200
Subject: [PATCH 097/269] genirq: Do not invoke the affinity callback via a
Subject: [PATCH 097/283] genirq: Do not invoke the affinity callback via a
workqueue on RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
Joe Korty reported, that __irq_set_affinity_locked() schedules a
workqueue while holding a rawlock which results in a might_sleep()
@ -12,9 +12,9 @@ This patch uses swork_queue() instead.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
include/linux/interrupt.h | 6 ++++++
kernel/irq/manage.c | 43 ++++++++++++++++++++++++++++++++++++---
2 files changed, 46 insertions(+), 3 deletions(-)
include/linux/interrupt.h | 6 +++++
kernel/irq/manage.c | 46 ++++++++++++++++++++++++++++++++++++---
2 files changed, 49 insertions(+), 3 deletions(-)
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 315f852b4981..a943c07b54ba 100644
@ -49,7 +49,7 @@ index 315f852b4981..a943c07b54ba 100644
void (*release)(struct kref *ref);
};
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 94a18cf54293..d2270f61d335 100644
index c3b9f6dacd8f..af2a8757abfb 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -259,7 +259,12 @@ int irq_set_affinity_locked(struct irq_data *data, const struct cpumask *mask,
@ -126,6 +126,17 @@ index 94a18cf54293..d2270f61d335 100644
}
raw_spin_lock_irqsave(&desc->lock, flags);
@@ -359,7 +396,10 @@ irq_set_affinity_notifier(unsigned int irq, struct irq_affinity_notify *notify)
raw_spin_unlock_irqrestore(&desc->lock, flags);
if (old_notify) {
+#ifndef CONFIG_PREEMPT_RT_BASE
+ /* Need to address this for PREEMPT_RT */
cancel_work_sync(&old_notify->work);
+#endif
kref_put(&old_notify->kref, old_notify->release);
}
--
2.20.1

6
debian/patches-rt/0098-time-hrtimer-avoid-schedule_work-with-interrupts-dis.patch vendored
View File

@ -1,9 +1,9 @@
From 49622b7282a6c10c5a70f3987df4ccfe3a32c92b Mon Sep 17 00:00:00 2001
From 7ada38687fe4d4f0ff8b7390d1588f7fed28a28d Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 15 Nov 2017 17:29:51 +0100
Subject: [PATCH 098/269] time/hrtimer: avoid schedule_work() with interrupts
Subject: [PATCH 098/283] time/hrtimer: avoid schedule_work() with interrupts
disabled
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
The NOHZ code tries to schedule a workqueue with interrupts disabled.
Since this does not work -RT I am switching it to swork instead.

20
debian/patches-rt/0099-hrtimer-consolidate-hrtimer_init-hrtimer_init_sleepe.patch vendored
View File

@ -1,9 +1,9 @@
From 7223736bbeccbb731d509b603b15adcbf36bdade Mon Sep 17 00:00:00 2001
From 2decd81945344204be663182b0eac46997f297b2 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 3 Jul 2018 11:25:41 +0200
Subject: [PATCH 099/269] hrtimer: consolidate hrtimer_init() +
Subject: [PATCH 099/283] hrtimer: consolidate hrtimer_init() +
hrtimer_init_sleeper() calls
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.37-rt20.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.59-rt24.tar.xz
hrtimer_init_sleeper() calls require a prior initialisation of the
hrtimer object with hrtimer_init(). Lets make the initialisation of
@ -28,10 +28,10 @@ Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
7 files changed, 67 insertions(+), 34 deletions(-)
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 7d53f2314d7c..b0d0b74cf5a6 100644
index 70d839b9c3b0..e3e7a88e03a6 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -3124,10 +3124,9 @@ static bool blk_mq_poll_hybrid_sleep(struct request_queue *q,
@@ -3128,10 +3128,9 @@ static bool blk_mq_poll_hybrid_sleep(struct request_queue *q,
kt = nsecs;
mode = HRTIMER_MODE_REL;
@ -126,10 +126,10 @@ index 2b5ef8e94d19..94bd2e841de6 100644
hrtimer_start_range_ns(&__t.timer, timeout, \
current->timer_slack_ns, \
diff --git a/kernel/futex.c b/kernel/futex.c
index 1bd0950bea4e..fadd9bff6e3c 100644
index 304f07d08c95..ccf933ac2997 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -2684,10 +2684,9 @@ static int futex_wait(u32 __user *uaddr, unsigned int flags, u32 val,
@@ -2701,10 +2701,9 @@ static int futex_wait(u32 __user *uaddr, unsigned int flags, u32 val,
if (abs_time) {
to = &timeout;
@ -143,7 +143,7 @@ index 1bd0950bea4e..fadd9bff6e3c 100644
hrtimer_set_expires_range_ns(&to->timer, *abs_time,
current->timer_slack_ns);
}
@@ -2786,9 +2785,8 @@ static int futex_lock_pi(u32 __user *uaddr, unsigned int flags,
@@ -2803,9 +2802,8 @@ static int futex_lock_pi(u32 __user *uaddr, unsigned int flags,
if (time) {
to = &timeout;
@ -155,7 +155,7 @@ index 1bd0950bea4e..fadd9bff6e3c 100644
hrtimer_set_expires(&to->timer, *time);
}
@@ -3212,10 +3210,9 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags,
@@ -3242,10 +3240,9 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags,
if (abs_time) {
to = &timeout;
@ -264,7 +264,7 @@ index e1a549c9e399..4f43ece42f3b 100644
if (likely(t.task))
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 7f6938405fa1..b71d9eef334e 100644
index 092fa3d75b32..9d472d626aaa 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -2160,7 +2160,8 @@ static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)

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