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[rt] Update to 3.10.10-rt7 

svn path=/dists/sid/linux/; revision=20532
This commit is contained in:
Ben Hutchings 2013-08-30 03:21:54 +00:00
parent 283813ab80
commit c72912f8a1
284 changed files with 1100 additions and 410 deletions
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11
debian/changelog vendored
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@ -43,6 +43,17 @@ linux (3.10.10-1) UNRELEASED; urgency=low
- [x86] get_unmapped_area: Access mmap_legacy_base through mm_struct member
- bcache: FUA fixes
[ Ben Hutchings ]
* [rt] Update to 3.10.10-rt7:
- hwlat-detector: Update hwlat_detector to add outer loop detection
- hwlat-detector: Use thread instead of stop machine
- hwlat-detector: Use trace_clock_local if available
- genirq: do not invoke the affinity callback via a workqueue
- simple-wait: rename and export the equivalent of waitqueue_active()
- simple-wait: Fix a race condition with swait wakeups vs adding items
to the list
- rcu: Use swait_wake_all() in rcu_nocb_gp_cleanup()
-- Ben Hutchings <ben@decadent.org.uk> Fri, 30 Aug 2013 02:31:22 +0100
linux (3.10.7-1) unstable; urgency=low

3
debian/config/featureset-rt/config vendored
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@ -6,6 +6,3 @@ CONFIG_WAKEUP_LATENCY_HIST=y
## disable aufs as it's not needed on rt and conflicts with fs-dentry-use-seqlock.patch
# CONFIG_AUFS_FS is not set
## disable bcache as it uses {down,up}_read_non_owner() which don't exist on rt
# CONFIG_BCACHE is not set

2
debian/patches/features/all/rt/0002-kernel-SRCU-provide-a-static-initializer.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 19 Mar 2013 14:44:30 +0100
Subject: [PATCH] kernel/SRCU: provide a static initializer
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
There are macros for static initializer for the three out of four
possible notifier types, that are:

2
debian/patches/features/all/rt/0002-x86-highmem-add-a-already-used-pte-check.patch vendored
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@ -2,7 +2,7 @@ From 65513f34449eedb6b84c24a3583266534c1627e4 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Mon, 11 Mar 2013 17:09:55 +0100
Subject: [PATCH 2/6] x86/highmem: add a "already used pte" check
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
This is a copy from kmap_atomic_prot().

2
debian/patches/features/all/rt/0003-arm-highmem-flush-tlb-on-unmap.patch vendored
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@ -2,7 +2,7 @@ From e2ca4d092d9c6e6b07b465b4d81da207bbcc7437 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Mon, 11 Mar 2013 21:37:27 +0100
Subject: [PATCH 3/6] arm/highmem: flush tlb on unmap
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
The tlb should be flushed on unmap and thus make the mapping entry
invalid. This is only done in the non-debug case which does not look

2
debian/patches/features/all/rt/0005-futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch vendored
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@ -3,7 +3,7 @@ From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 1 Mar 2013 11:17:42 +0100
Subject: [PATCH 5/6] futex: Ensure lock/unlock symetry versus pi_lock and
hash bucket lock
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
In exit_pi_state_list() we have the following locking construct:

2
debian/patches/features/all/rt/HACK-printk-drop-the-logbuf_lock-more-often.patch vendored
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@ -2,7 +2,7 @@ From b72b514282ffad0d665ea94932b968f388304079 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 21 Mar 2013 19:01:05 +0100
Subject: [PATCH] HACK: printk: drop the logbuf_lock more often
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
The lock is hold with irgs off. The latency drops 500us+ on my arm bugs
with a "full" buffer after executing "dmesg" on the shell.

2
debian/patches/features/all/rt/acpi-rt-Convert-acpi_gbl_hardware-lock-back-to-a-raw.patch vendored
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@ -1,7 +1,7 @@
From: Steven Rostedt <rostedt@goodmis.org>
Date: Wed, 13 Feb 2013 09:26:05 -0500
Subject: [PATCH] acpi/rt: Convert acpi_gbl_hardware lock back to a raw_spinlock_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
We hit the following bug with 3.6-rt:

2
debian/patches/features/all/rt/arch-use-pagefault-disabled.patch vendored
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@ -1,7 +1,7 @@
Subject: mm: Fixup all fault handlers to check current->pagefault_disable
From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 17 Mar 2011 11:32:28 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Necessary for decoupling pagefault disable from preempt count.

2
debian/patches/features/all/rt/arm-allow-irq-threading.patch vendored
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@ -1,7 +1,7 @@
Subject: arm: Allow forced irq threading
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sat, 16 Jul 2011 13:15:20 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
All timer interrupts and the perf interrupt are marked NO_THREAD, so
its safe to allow forced interrupt threading.

2
debian/patches/features/all/rt/arm-at91-pit-remove-irq-handler-when-clock-is-unused.patch vendored
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@ -1,7 +1,7 @@
From: Benedikt Spranger <b.spranger@linutronix.de>
Date: Sat, 6 Mar 2010 17:47:10 +0100
Subject: ARM: AT91: PIT: Remove irq handler when clock event is unused
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Setup and remove the interrupt handler in clock event mode selection.
This avoids calling the (shared) interrupt handler when the device is

2
debian/patches/features/all/rt/arm-at91-tclib-default-to-tclib-timer-for-rt.patch vendored
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@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sat, 1 May 2010 18:29:35 +0200
Subject: ARM: at91: tclib: Default to tclib timer for RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
RT is not too happy about the shared timer interrupt in AT91
devices. Default to tclib timer for RT.

2
debian/patches/features/all/rt/arm-convert-boot-lock-to-raw.patch vendored
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@ -1,7 +1,7 @@
From: Frank Rowand <frank.rowand@am.sony.com>
Date: Mon, 19 Sep 2011 14:51:14 -0700
Subject: [PATCH] preempt-rt: Convert arm boot_lock to raw
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.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.

4
debian/patches/features/all/rt/arm-disable-highmem-on-rt.patch vendored
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@ -1,7 +1,7 @@
Subject: arm-disable-highmem-on-rt.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Mon, 18 Jul 2011 17:09:28 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
@ -10,7 +10,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1704,7 +1704,7 @@ config HAVE_ARCH_PFN_VALID
@@ -1705,7 +1705,7 @@ config HAVE_ARCH_PFN_VALID
config HIGHMEM
bool "High Memory Support"

4
debian/patches/features/all/rt/arm-enable-highmem-for-rt.patch vendored
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@ -1,7 +1,7 @@
Subject: arm-enable-highmem-for-rt.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 13 Feb 2013 11:03:11 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
@ -13,7 +13,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1704,7 +1704,7 @@ config HAVE_ARCH_PFN_VALID
@@ -1705,7 +1705,7 @@ config HAVE_ARCH_PFN_VALID
config HIGHMEM
bool "High Memory Support"

2
debian/patches/features/all/rt/arm-mark-pmu-interupt-no-thread.patch vendored
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@ -1,7 +1,7 @@
Subject: arm: Mark pmu interupt IRQF_NO_THREAD
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 16 Mar 2011 14:45:31 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
PMU interrupts must not be threaded.

4
debian/patches/features/all/rt/arm-preempt-lazy-support.patch vendored
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@ -1,7 +1,7 @@
Subject: arm-preempt-lazy-support.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 31 Oct 2012 12:04:11 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
@ -14,7 +14,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -47,6 +47,7 @@ config ARM
@@ -48,6 +48,7 @@ config ARM
select HAVE_MEMBLOCK
select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
select HAVE_PERF_EVENTS

2
debian/patches/features/all/rt/ata-disable-interrupts-if-non-rt.patch vendored
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@ -1,7 +1,7 @@
From: Steven Rostedt <srostedt@redhat.com>
Date: Fri, 3 Jul 2009 08:44:29 -0500
Subject: ata: Do not disable interrupts in ide code for preempt-rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Use the local_irq_*_nort variants.

2
debian/patches/features/all/rt/block-shorten-interrupt-disabled-regions.patch vendored
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@ -1,7 +1,7 @@
Subject: block: Shorten interrupt disabled regions
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 22 Jun 2011 19:47:02 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Moving the blk_sched_flush_plug() call out of the interrupt/preempt
disabled region in the scheduler allows us to replace

2
debian/patches/features/all/rt/block-use-cpu-chill.patch vendored
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@ -1,7 +1,7 @@
Subject: block: Use cpu_chill() for retry loops
From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 20 Dec 2012 18:28:26 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Retry loops on RT might loop forever when the modifying side was
preempted. Steven also observed a live lock when there was a

2
debian/patches/features/all/rt/bug-rt-dependend-variants.patch vendored
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@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:29:58 -0500
Subject: bug: BUG_ON/WARN_ON variants dependend on RT/!RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2
debian/patches/features/all/rt/clocksource-tclib-allow-higher-clockrates.patch vendored
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@ -1,7 +1,7 @@
From: Benedikt Spranger <b.spranger@linutronix.de>
Date: Mon, 8 Mar 2010 18:57:04 +0100
Subject: clocksource: TCLIB: Allow higher clock rates for clock events
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.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.

2
debian/patches/features/all/rt/completion-use-simple-wait-queues.patch vendored
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@ -1,7 +1,7 @@
Subject: completion: Use simple wait queues
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 11 Jan 2013 11:23:51 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Completions have no long lasting callbacks and therefor do not need
the complex waitqueue variant. Use simple waitqueues which reduces the

4
debian/patches/features/all/rt/cond-resched-lock-rt-tweak.patch vendored
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@ -1,7 +1,7 @@
Subject: cond-resched-lock-rt-tweak.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 17 Jul 2011 22:51:33 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
@ -10,7 +10,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2486,7 +2486,7 @@ extern int _cond_resched(void);
@@ -2487,7 +2487,7 @@ extern int _cond_resched(void);
extern int __cond_resched_lock(spinlock_t *lock);

4
debian/patches/features/all/rt/cond-resched-softirq-rt.patch vendored
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@ -1,7 +1,7 @@
Subject: cond-resched-softirq-fix.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 14 Jul 2011 09:56:44 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
@ -11,7 +11,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2497,12 +2497,16 @@ extern int __cond_resched_lock(spinlock_
@@ -2498,12 +2498,16 @@ extern int __cond_resched_lock(spinlock_
__cond_resched_lock(lock); \
})

2
debian/patches/features/all/rt/cpu-rt-make-hotplug-lock-a-sleeping-spinlock-on-rt.patch vendored
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@ -1,7 +1,7 @@
Subject: cpu: Make hotplug.lock a "sleeping" spinlock on RT
From: Steven Rostedt <rostedt@goodmis.org>
Date: Fri, 02 Mar 2012 10:36:57 -0500
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Tasks can block on hotplug.lock in pin_current_cpu(), but their state
might be != RUNNING. So the mutex wakeup will set the state

6
debian/patches/features/all/rt/cpu-rt-rework-cpu-down.patch vendored
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@ -1,7 +1,7 @@
From: Steven Rostedt <srostedt@redhat.com>
Date: Mon, 16 Jul 2012 08:07:43 +0000
Subject: cpu/rt: Rework cpu down for PREEMPT_RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Bringing a CPU down is a pain with the PREEMPT_RT kernel because
tasks can be preempted in many more places than in non-RT. In
@ -57,7 +57,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1811,6 +1811,10 @@ extern void do_set_cpus_allowed(struct t
@@ -1812,6 +1812,10 @@ extern void do_set_cpus_allowed(struct t
extern int set_cpus_allowed_ptr(struct task_struct *p,
const struct cpumask *new_mask);
@ -68,7 +68,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
#else
static inline void do_set_cpus_allowed(struct task_struct *p,
const struct cpumask *new_mask)
@@ -1823,6 +1827,9 @@ static inline int set_cpus_allowed_ptr(s
@@ -1824,6 +1828,9 @@ static inline int set_cpus_allowed_ptr(s
return -EINVAL;
return 0;
}

2
debian/patches/features/all/rt/cpu-rt-variants.patch vendored
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@ -1,7 +1,7 @@
Subject: cpu-rt-variants.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 17 Jun 2011 15:42:38 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/cpumask-disable-offstack-on-rt.patch vendored
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@ -1,7 +1,7 @@
Subject: cpumask: Disable CONFIG_CPUMASK_OFFSTACK for RT
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 14 Dec 2011 01:03:49 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
We can't deal with the cpumask allocations which happen in atomic
context (see arch/x86/kernel/apic/io_apic.c) on RT right now.

2
debian/patches/features/all/rt/debugobjects-rt.patch vendored
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@ -1,7 +1,7 @@
Subject: debugobjects-rt.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 17 Jul 2011 21:41:35 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/dm-make-rt-aware.patch vendored
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@ -1,7 +1,7 @@
Subject: dm: Make rt aware
From: Thomas Gleixner <tglx@linutronix.de>
Date: Mon, 14 Nov 2011 23:06:09 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Use the BUG_ON_NORT variant for the irq_disabled() checks. RT has
interrupts legitimately enabled here as we cant deadlock against the

2
debian/patches/features/all/rt/drivers-net-8139-disable-irq-nosync.patch vendored
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@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:29:24 -0500
Subject: drivers/net: Use disable_irq_nosync() in 8139too
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Use disable_irq_nosync() instead of disable_irq() as this might be
called in atomic context with netpoll.

2
debian/patches/features/all/rt/drivers-net-fix-livelock-issues.patch vendored
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@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sat, 20 Jun 2009 11:36:54 +0200
Subject: drivers/net: fix livelock issues
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Preempt-RT runs into a live lock issue with the NETDEV_TX_LOCKED micro
optimization. The reason is that the softirq thread is rescheduling

2
debian/patches/features/all/rt/drivers-net-gianfar-make-rt-aware.patch vendored
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@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 1 Apr 2010 20:20:57 +0200
Subject: drivers: net: gianfar: Make RT aware
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
The adjust_link() disables interrupts before taking the queue
locks. On RT those locks are converted to "sleeping" locks and

2
debian/patches/features/all/rt/drivers-net-tulip-add-missing-pci-disable.patch vendored
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@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:30:18 -0500
Subject: drivers/net: tulip_remove_one needs to call pci_disable_device()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Otherwise the device is not completely shut down.

2
debian/patches/features/all/rt/drivers-net-vortex-fix-locking-issues.patch vendored
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@ -1,7 +1,7 @@
From: Steven Rostedt <rostedt@goodmis.org>
Date: Fri, 3 Jul 2009 08:30:00 -0500
Subject: drivers/net: vortex fix locking issues
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Argh, cut and paste wasn't enough...

2
debian/patches/features/all/rt/drivers-random-reduce-preempt-disabled-region.patch vendored
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@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:29:30 -0500
Subject: drivers: random: Reduce preempt disabled region
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
No need to keep preemption disabled across the whole function.

2
debian/patches/features/all/rt/drivers-serial-call-flush_to_ldisc-when-the-irq-is-t.patch vendored
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@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:30:01 -0500
Subject: serial: 8250: Call flush_to_ldisc when the irq is threaded
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2
debian/patches/features/all/rt/drivers-serial-cleanup-locking-for-rt.patch vendored
View File

@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:30:01 -0500
Subject: serial: 8250: Clean up the locking for -rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2
debian/patches/features/all/rt/drivers-tty-fix-omap-lock-crap.patch vendored
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@ -1,7 +1,7 @@
Subject: drivers-tty-fix-omap-lock-crap.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 28 Jul 2011 13:32:57 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/drivers-tty-pl011-irq-disable-madness.patch vendored
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@ -1,7 +1,7 @@
Subject: drivers-tty-pl011-irq-disable-madness.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 08 Jan 2013 21:36:51 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/drm-i915-drop-trace_i915_gem_ring_dispatch-onrt.patch vendored
View File

@ -2,7 +2,7 @@ From d841118ac80c5bfb18f47984bc40687eed08b714 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 25 Apr 2013 18:12:52 +0200
Subject: [PATCH] drm/i915: drop trace_i915_gem_ring_dispatch on rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
This tracepoint is responsible for:

2
debian/patches/features/all/rt/early-printk-consolidate.patch vendored
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@ -1,7 +1,7 @@
Subject: early-printk-consolidate.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sat, 23 Jul 2011 11:04:08 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/epoll-use-get-cpu-light.patch vendored
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@ -1,7 +1,7 @@
Subject: epoll.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 08 Jul 2011 16:35:35 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/filemap-fix-up.patch vendored
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@ -1,7 +1,7 @@
Subject: filemap-fix-up.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 17 Jun 2011 18:56:24 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Wrecked-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>

2
debian/patches/features/all/rt/fix-rt-int3-x86_32-3.2-rt.patch vendored
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@ -1,6 +1,6 @@
From: Steven Rostedt <rostedt@goodmis.org>
Subject: x86: Do not disable preemption in int3 on 32bit
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Preemption must be disabled before enabling interrupts in do_trap
on x86_64 because the stack in use for int3 and debug is a per CPU

2
debian/patches/features/all/rt/fs-block-rt-support.patch vendored
View File

@ -1,7 +1,7 @@
Subject: fs-block-rt-support.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 14 Jun 2011 17:05:09 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/fs-dcache-use-cpu-chill-in-trylock-loops.patch vendored
View File

@ -1,7 +1,7 @@
Subject: fs: dcache: Use cpu_chill() in trylock loops
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 07 Mar 2012 21:00:34 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Retry loops on RT might loop forever when the modifying side was
preempted. Use cpu_chill() instead of cpu_relax() to let the system

2
debian/patches/features/all/rt/fs-fscache-remove-spin_lock-from-the-condition-in-wh.patch vendored
View File

@ -2,7 +2,7 @@ From d32f5420ac164141683c51e8a8fce666423de492 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 3 Apr 2013 12:43:30 +0200
Subject: [PATCH] fs/fscache: remove spin_lock() from the condition in while()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
The spinlock() within the condition in while() will cause a compile error
if it is not a function. This is not a problem on mainline but it does not

2
debian/patches/features/all/rt/fs-jbd-pull-plug-when-waiting-for-space.patch vendored
View File

@ -1,7 +1,7 @@
From: Mike Galbraith <mgalbraith@suse.de>
Date: Wed, 11 Jul 2012 22:05:20 +0000
Subject: fs, jbd: pull your plug when waiting for space
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
With an -rt kernel, and a heavy sync IO load, tasks can jam
up on journal locks without unplugging, which can lead to

2
debian/patches/features/all/rt/fs-jbd-replace-bh_state-lock.patch vendored
View File

@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 18 Mar 2011 10:11:25 +0100
Subject: fs: jbd/jbd2: Make state lock and journal head lock rt safe
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
bit_spin_locks break under RT.

2
debian/patches/features/all/rt/fs-namespace-preemption-fix.patch vendored
View File

@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 19 Jul 2009 08:44:27 -0500
Subject: fs: namespace preemption fix
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
On RT we cannot loop with preemption disabled here as
mnt_make_readonly() might have been preempted. We can safely enable

2
debian/patches/features/all/rt/fs-ntfs-disable-interrupt-non-rt.patch vendored
View File

@ -1,7 +1,7 @@
From: Mike Galbraith <efault@gmx.de>
Date: Fri, 3 Jul 2009 08:44:12 -0500
Subject: fs: ntfs: disable interrupt only on !RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
On Sat, 2007-10-27 at 11:44 +0200, Ingo Molnar wrote:
> * Nick Piggin <nickpiggin@yahoo.com.au> wrote:

2
debian/patches/features/all/rt/fs-replace-bh_uptodate_lock-for-rt.patch vendored
View File

@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 18 Mar 2011 09:18:52 +0100
Subject: buffer_head: Replace bh_uptodate_lock for -rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Wrap the bit_spin_lock calls into a separate inline and add the RT
replacements with a real spinlock.

8
debian/patches/features/all/rt/ftrace-migrate-disable-tracing.patch vendored
View File

@ -1,7 +1,7 @@
Subject: ftrace-migrate-disable-tracing.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 17 Jul 2011 21:56:42 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
@ -24,7 +24,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
#define FTRACE_MAX_EVENT \
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -399,7 +399,7 @@ int __trace_puts(unsigned long ip, const
@@ -428,7 +428,7 @@ int __trace_puts(unsigned long ip, const
local_save_flags(irq_flags);
buffer = global_trace.trace_buffer.buffer;
@ -33,7 +33,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
irq_flags, preempt_count());
if (!event)
return 0;
@@ -1449,6 +1449,8 @@ tracing_generic_entry_update(struct trac
@@ -1493,6 +1493,8 @@ tracing_generic_entry_update(struct trac
((pc & HARDIRQ_MASK) ? TRACE_FLAG_HARDIRQ : 0) |
((pc & SOFTIRQ_MASK) ? TRACE_FLAG_SOFTIRQ : 0) |
(need_resched() ? TRACE_FLAG_NEED_RESCHED : 0);
@ -42,7 +42,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
}
EXPORT_SYMBOL_GPL(tracing_generic_entry_update);
@@ -2352,9 +2354,10 @@ static void print_lat_help_header(struct
@@ -2396,9 +2398,10 @@ static void print_lat_help_header(struct
seq_puts(m, "# | / _----=> need-resched \n");
seq_puts(m, "# || / _---=> hardirq/softirq \n");
seq_puts(m, "# ||| / _--=> preempt-depth \n");

2
debian/patches/features/all/rt/futex-requeue-pi-fix.patch vendored
View File

@ -1,6 +1,6 @@
From: Steven Rostedt <rostedt@goodmis.org>
Subject: futex: Fix bug on when a requeued RT task times out
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Requeue with timeout causes a bug with PREEMPT_RT_FULL.

2
debian/patches/features/all/rt/genirq-disable-irqpoll-on-rt.patch vendored
View File

@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:29:57 -0500
Subject: genirq: disable irqpoll on -rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Creates long latencies for no value

146
debian/patches/features/all/rt/genirq-do-not-invoke-the-affinity-callback-via-a-wor.patch vendored Normal file
View File

@ -0,0 +1,146 @@
From 76666dbbdd40e963e7df84c123fc9aea4a2bcc69 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] genirq: do not invoke the affinity callback via a workqueue
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Joe Korty reported, that __irq_set_affinity_locked() schedules a
workqueue while holding a rawlock which results in a might_sleep()
warning.
This patch moves the invokation into a process context so that we only
wakeup() a process while holding the lock.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
include/linux/interrupt.h | 1
kernel/irq/manage.c | 79 ++++++++++++++++++++++++++++++++++++++++++++--
2 files changed, 77 insertions(+), 3 deletions(-)
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -261,6 +261,7 @@ struct irq_affinity_notify {
unsigned int irq;
struct kref kref;
struct work_struct work;
+ struct list_head list;
void (*notify)(struct irq_affinity_notify *, const cpumask_t *mask);
void (*release)(struct kref *ref);
};
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -164,6 +164,62 @@ int irq_do_set_affinity(struct irq_data
return ret;
}
+#ifdef CONFIG_PREEMPT_RT_FULL
+static void _irq_affinity_notify(struct irq_affinity_notify *notify);
+static struct task_struct *set_affinity_helper;
+static LIST_HEAD(affinity_list);
+static DEFINE_RAW_SPINLOCK(affinity_list_lock);
+
+static int set_affinity_thread(void *unused)
+{
+ while (1) {
+ struct irq_affinity_notify *notify;
+ int empty;
+
+ set_current_state(TASK_INTERRUPTIBLE);
+
+ raw_spin_lock_irq(&affinity_list_lock);
+ empty = list_empty(&affinity_list);
+ raw_spin_unlock_irq(&affinity_list_lock);
+
+ if (empty)
+ schedule();
+ if (kthread_should_stop())
+ break;
+ set_current_state(TASK_RUNNING);
+try_next:
+ notify = NULL;
+
+ raw_spin_lock_irq(&affinity_list_lock);
+ if (!list_empty(&affinity_list)) {
+ notify = list_first_entry(&affinity_list,
+ struct irq_affinity_notify, list);
+ list_del_init(&notify->list);
+ }
+ raw_spin_unlock_irq(&affinity_list_lock);
+
+ if (!notify)
+ continue;
+ _irq_affinity_notify(notify);
+ goto try_next;
+ }
+ return 0;
+}
+
+static void init_helper_thread(void)
+{
+ if (set_affinity_helper)
+ return;
+ set_affinity_helper = kthread_run(set_affinity_thread, NULL,
+ "affinity-cb");
+ WARN_ON(IS_ERR(set_affinity_helper));
+}
+#else
+
+static inline void init_helper_thread(void) { }
+
+#endif
+
int __irq_set_affinity_locked(struct irq_data *data, const struct cpumask *mask)
{
struct irq_chip *chip = irq_data_get_irq_chip(data);
@@ -182,7 +238,17 @@ int __irq_set_affinity_locked(struct irq
if (desc->affinity_notify) {
kref_get(&desc->affinity_notify->kref);
+
+#ifdef CONFIG_PREEMPT_RT_FULL
+ raw_spin_lock(&affinity_list_lock);
+ if (list_empty(&desc->affinity_notify->list))
+ list_add_tail(&affinity_list,
+ &desc->affinity_notify->list);
+ raw_spin_unlock(&affinity_list_lock);
+ wake_up_process(set_affinity_helper);
+#else
schedule_work(&desc->affinity_notify->work);
+#endif
}
irqd_set(data, IRQD_AFFINITY_SET);
@@ -223,10 +289,8 @@ int irq_set_affinity_hint(unsigned int i
}
EXPORT_SYMBOL_GPL(irq_set_affinity_hint);
-static void irq_affinity_notify(struct work_struct *work)
+static void _irq_affinity_notify(struct irq_affinity_notify *notify)
{
- struct irq_affinity_notify *notify =
- container_of(work, struct irq_affinity_notify, work);
struct irq_desc *desc = irq_to_desc(notify->irq);
cpumask_var_t cpumask;
unsigned long flags;
@@ -248,6 +312,13 @@ out:
kref_put(&notify->kref, notify->release);
}
+static void irq_affinity_notify(struct work_struct *work)
+{
+ struct irq_affinity_notify *notify =
+ container_of(work, struct irq_affinity_notify, work);
+ _irq_affinity_notify(notify);
+}
+
/**
* irq_set_affinity_notifier - control notification of IRQ affinity changes
* @irq: Interrupt for which to enable/disable notification
@@ -277,6 +348,8 @@ irq_set_affinity_notifier(unsigned int i
notify->irq = irq;
kref_init(&notify->kref);
INIT_WORK(&notify->work, irq_affinity_notify);
+ INIT_LIST_HEAD(&notify->list);
+ init_helper_thread();
}
raw_spin_lock_irqsave(&desc->lock, flags);

2
debian/patches/features/all/rt/genirq-force-threading.patch vendored
View File

@ -1,7 +1,7 @@
Subject: genirq-force-threading.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 03 Apr 2011 11:57:29 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/genirq-nodebug-shirq.patch vendored
View File

@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 18 Mar 2011 10:22:04 +0100
Subject: genirq: Disable DEBUG_SHIRQ for rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/gpu-i915-allow-the-user-not-to-do-the-wbinvd.patch vendored
View File

@ -2,7 +2,7 @@ From b580b7eedc8ee3990b118003c4793291387c40ac Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 21 Jun 2013 11:38:28 +0200
Subject: [PATCH] gpu: i915: allow the user not to do the wbinvd
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
The wbinvd() renders the system with i915 unusable on RT. Using this
expensive instruction avoids GPU trouble according to

2
debian/patches/features/all/rt/harirq-h-define-softirq_count-as-oul-to-kill-build-warning.patch vendored
View File

@ -1,7 +1,7 @@
Subject: hardirq.h: Define softirq_count() as OUL to kill build warning
From: Yong Zhang <yong.zhang0@gmail.com>
Date: Thu, 13 Oct 2011 17:19:09 +0800
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
kernel/lockdep.c: In function ‘print_bad_irq_dependency’:
kernel/lockdep.c:1476:3: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 7 has type ‘unsigned int’

2
debian/patches/features/all/rt/hotplug-call-cpu_unplug_begin-a-little-early.patch vendored
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@ -1,7 +1,7 @@
Subject: hotplug: Call cpu_unplug_begin() before DOWN_PREPARE
From: Yong Zhang <yong.zhang0@gmail.com>
Date: Sun, 16 Oct 2011 18:56:44 +0800
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
cpu_unplug_begin() should be called before CPU_DOWN_PREPARE, because
at CPU_DOWN_PREPARE cpu_active is cleared and sched_domain is

2
debian/patches/features/all/rt/hotplug-light-get-online-cpus.patch vendored
View File

@ -1,7 +1,7 @@
Subject: hotplug: Lightweight get online cpus
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 15 Jun 2011 12:36:06 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
get_online_cpus() is a heavy weight function which involves a global
mutex. migrate_disable() wants a simpler construct which prevents only

2
debian/patches/features/all/rt/hotplug-sync_unplug-no-27-5cn-27-in-task-name.patch vendored
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@ -1,7 +1,7 @@
Subject: hotplug: sync_unplug: No "\n" in task name
From: Yong Zhang <yong.zhang0@gmail.com>
Date: Sun, 16 Oct 2011 18:56:43 +0800
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Otherwise the output will look a little odd.

2
debian/patches/features/all/rt/hotplug-use-migrate-disable.patch vendored
View File

@ -1,7 +1,7 @@
Subject: hotplug-use-migrate-disable.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 17 Jul 2011 19:35:29 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/hpsa-fix-warning-with-smp_processor_id-in-preemptibl.patch vendored
View File

@ -2,7 +2,7 @@ From: John Kacur <jkacur@redhat.com>
Date: Fri, 26 Jul 2013 16:06:18 +0200
Subject: [PATCH] hpsa: fix warning with smp_processor_id() in preemptible
section
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
On a 3.6-rt (real-time patch) kernel we are seeing the following BUG
However, it appears to be relevant for non-realtime (mainline) as well.

2
debian/patches/features/all/rt/hrtimer-fixup-hrtimer-callback-changes-for-preempt-r.patch vendored
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@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 3 Jul 2009 08:44:31 -0500
Subject: hrtimer: fixup hrtimer callback changes for preempt-rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
In preempt-rt we can not call the callbacks which take sleeping locks
from the timer interrupt context.

2
debian/patches/features/all/rt/hrtimer-raise-softirq-if-hrtimer-irq-stalled.patch vendored
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@ -1,7 +1,7 @@
Subject: hrtimer: Raise softirq if hrtimer irq stalled
From: Watanabe <shunsuke.watanabe@tel.com>
Date: Sun, 28 Oct 2012 11:13:44 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
When the hrtimer stall detection hits the softirq is not raised.

2
debian/patches/features/all/rt/hrtimers-prepare-full-preemption.patch vendored
View File

@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:29:34 -0500
Subject: hrtimers: prepare full preemption
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Make cancellation of a running callback in softirq context safe
against preemption.

128
debian/patches/features/all/rt/hwlat-detector-Update-hwlat_detector-to-add-outer-lo.patch vendored Normal file
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@ -0,0 +1,128 @@
From 7a036d4dfcf3f2d3247ff7f739284f4b5056bdcb Mon Sep 17 00:00:00 2001
From: Steven Rostedt <rostedt@goodmis.org>
Date: Mon, 19 Aug 2013 17:33:25 -0400
Subject: [PATCH 1/3] hwlat-detector: Update hwlat_detector to add outer loop
detection
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
The hwlat_detector reads two timestamps in a row, then reports any
gap between those calls. The problem is, it misses everything between
the second reading of the time stamp to the first reading of the time stamp
in the next loop. That's were most of the time is spent, which means,
chances are likely that it will miss all hardware latencies. This
defeats the purpose.
By also testing the first time stamp from the previous loop second
time stamp (the outer loop), we are more likely to find a latency.
Setting the threshold to 1, here's what the report now looks like:
1347415723.0232202770 0 2
1347415725.0234202822 0 2
1347415727.0236202875 0 2
1347415729.0238202928 0 2
1347415731.0240202980 0 2
1347415734.0243203061 0 2
1347415736.0245203113 0 2
1347415738.0247203166 2 0
1347415740.0249203219 0 3
1347415742.0251203272 0 3
1347415743.0252203299 0 3
1347415745.0254203351 0 2
1347415747.0256203404 0 2
1347415749.0258203457 0 2
1347415751.0260203510 0 2
1347415754.0263203589 0 2
1347415756.0265203642 0 2
1347415758.0267203695 0 2
1347415760.0269203748 0 2
1347415762.0271203801 0 2
1347415764.0273203853 2 0
There's some hardware latency that takes 2 microseconds to run.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
drivers/misc/hwlat_detector.c | 32 ++++++++++++++++++++++++++------
1 file changed, 26 insertions(+), 6 deletions(-)
--- a/drivers/misc/hwlat_detector.c
+++ b/drivers/misc/hwlat_detector.c
@@ -143,6 +143,7 @@ static void detector_exit(void);
struct sample {
u64 seqnum; /* unique sequence */
u64 duration; /* ktime delta */
+ u64 outer_duration; /* ktime delta (outer loop) */
struct timespec timestamp; /* wall time */
unsigned long lost;
};
@@ -219,11 +220,13 @@ static struct sample *buffer_get_sample(
*/
static int get_sample(void *unused)
{
- ktime_t start, t1, t2;
+ ktime_t start, t1, t2, last_t2;
s64 diff, total = 0;
u64 sample = 0;
+ u64 outer_sample = 0;
int ret = 1;
+ last_t2.tv64 = 0;
start = ktime_get(); /* start timestamp */
do {
@@ -231,7 +234,22 @@ static int get_sample(void *unused)
t1 = ktime_get(); /* we'll look for a discontinuity */
t2 = ktime_get();
+ if (last_t2.tv64) {
+ /* Check the delta from the outer loop (t2 to next t1) */
+ diff = ktime_to_us(ktime_sub(t1, last_t2));
+ /* This shouldn't happen */
+ if (diff < 0) {
+ printk(KERN_ERR BANNER "time running backwards\n");
+ goto out;
+ }
+ if (diff > outer_sample)
+ outer_sample = diff;
+ }
+ last_t2 = t2;
+
total = ktime_to_us(ktime_sub(t2, start)); /* sample width */
+
+ /* This checks the inner loop (t1 to t2) */
diff = ktime_to_us(ktime_sub(t2, t1)); /* current diff */
/* This shouldn't happen */
@@ -246,12 +264,13 @@ static int get_sample(void *unused)
} while (total <= data.sample_width);
/* If we exceed the threshold value, we have found a hardware latency */
- if (sample > data.threshold) {
+ if (sample > data.threshold || outer_sample > data.threshold) {
struct sample s;
data.count++;
s.seqnum = data.count;
s.duration = sample;
+ s.outer_duration = outer_sample;
s.timestamp = CURRENT_TIME;
__buffer_add_sample(&s);
@@ -738,10 +757,11 @@ static ssize_t debug_sample_fread(struct
}
}
- len = snprintf(buf, sizeof(buf), "%010lu.%010lu\t%llu\n",
- sample->timestamp.tv_sec,
- sample->timestamp.tv_nsec,
- sample->duration);
+ len = snprintf(buf, sizeof(buf), "%010lu.%010lu\t%llu\t%llu\n",
+ sample->timestamp.tv_sec,
+ sample->timestamp.tv_nsec,
+ sample->duration,
+ sample->outer_duration);
/* handling partial reads is more trouble than it's worth */

184
debian/patches/features/all/rt/hwlat-detector-Use-thread-instead-of-stop-machine.patch vendored Normal file
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@ -0,0 +1,184 @@
From 42b3963c5d3dcdb54226fc6bbb6b5fbcf3f2ddee Mon Sep 17 00:00:00 2001
From: Steven Rostedt <rostedt@goodmis.org>
Date: Mon, 19 Aug 2013 17:33:27 -0400
Subject: [PATCH 3/3] hwlat-detector: Use thread instead of stop machine
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
There's no reason to use stop machine to search for hardware latency.
Simply disabling interrupts while running the loop will do enough to
check if something comes in that wasn't disabled by interrupts being
off, which is exactly what stop machine does.
Instead of using stop machine, just have the thread disable interrupts
while it checks for hardware latency.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
drivers/misc/hwlat_detector.c | 59 +++++++++++++++++-------------------------
1 file changed, 25 insertions(+), 34 deletions(-)
--- a/drivers/misc/hwlat_detector.c
+++ b/drivers/misc/hwlat_detector.c
@@ -41,7 +41,6 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/ring_buffer.h>
-#include <linux/stop_machine.h>
#include <linux/time.h>
#include <linux/hrtimer.h>
#include <linux/kthread.h>
@@ -107,7 +106,6 @@ struct data; /* Global state */
/* Sampling functions */
static int __buffer_add_sample(struct sample *sample);
static struct sample *buffer_get_sample(struct sample *sample);
-static int get_sample(void *unused);
/* Threading and state */
static int kthread_fn(void *unused);
@@ -149,7 +147,7 @@ struct sample {
unsigned long lost;
};
-/* keep the global state somewhere. Mostly used under stop_machine. */
+/* keep the global state somewhere. */
static struct data {
struct mutex lock; /* protect changes */
@@ -172,7 +170,7 @@ static struct data {
* @sample: The new latency sample value
*
* This receives a new latency sample and records it in a global ring buffer.
- * No additional locking is used in this case - suited for stop_machine use.
+ * No additional locking is used in this case.
*/
static int __buffer_add_sample(struct sample *sample)
{
@@ -229,18 +227,17 @@ static struct sample *buffer_get_sample(
#endif
/**
* get_sample - sample the CPU TSC and look for likely hardware latencies
- * @unused: This is not used but is a part of the stop_machine API
*
* Used to repeatedly capture the CPU TSC (or similar), looking for potential
- * hardware-induced latency. Called under stop_machine, with data.lock held.
+ * hardware-induced latency. Called with interrupts disabled and with data.lock held.
*/
-static int get_sample(void *unused)
+static int get_sample(void)
{
time_type start, t1, t2, last_t2;
s64 diff, total = 0;
u64 sample = 0;
u64 outer_sample = 0;
- int ret = 1;
+ int ret = -1;
init_time(last_t2, 0);
start = time_get(); /* start timestamp */
@@ -279,10 +276,14 @@ static int get_sample(void *unused)
} while (total <= data.sample_width);
+ ret = 0;
+
/* If we exceed the threshold value, we have found a hardware latency */
if (sample > data.threshold || outer_sample > data.threshold) {
struct sample s;
+ ret = 1;
+
data.count++;
s.seqnum = data.count;
s.duration = sample;
@@ -295,7 +296,6 @@ static int get_sample(void *unused)
data.max_sample = sample;
}
- ret = 0;
out:
return ret;
}
@@ -305,32 +305,30 @@ out:
* @unused: A required part of the kthread API.
*
* Used to periodically sample the CPU TSC via a call to get_sample. We
- * use stop_machine, whith does (intentionally) introduce latency since we
+ * disable interrupts, which does (intentionally) introduce latency since we
* need to ensure nothing else might be running (and thus pre-empting).
* Obviously this should never be used in production environments.
*
- * stop_machine will schedule us typically only on CPU0 which is fine for
- * almost every real-world hardware latency situation - but we might later
- * generalize this if we find there are any actualy systems with alternate
- * SMI delivery or other non CPU0 hardware latencies.
+ * Currently this runs on which ever CPU it was scheduled on, but most
+ * real-worald hardware latency situations occur across several CPUs,
+ * but we might later generalize this if we find there are any actualy
+ * systems with alternate SMI delivery or other hardware latencies.
*/
static int kthread_fn(void *unused)
{
- int err = 0;
- u64 interval = 0;
+ int ret;
+ u64 interval;
while (!kthread_should_stop()) {
mutex_lock(&data.lock);
- err = stop_machine(get_sample, unused, 0);
- if (err) {
- /* Houston, we have a problem */
- mutex_unlock(&data.lock);
- goto err_out;
- }
+ local_irq_disable();
+ ret = get_sample();
+ local_irq_enable();
- wake_up(&data.wq); /* wake up reader(s) */
+ if (ret > 0)
+ wake_up(&data.wq); /* wake up reader(s) */
interval = data.sample_window - data.sample_width;
do_div(interval, USEC_PER_MSEC); /* modifies interval value */
@@ -338,15 +336,10 @@ static int kthread_fn(void *unused)
mutex_unlock(&data.lock);
if (msleep_interruptible(interval))
- goto out;
+ break;
}
- goto out;
-err_out:
- printk(KERN_ERR BANNER "could not call stop_machine, disabling\n");
- enabled = 0;
-out:
- return err;
+ return 0;
}
/**
@@ -442,8 +435,7 @@ out:
* This function provides a generic read implementation for the global state
* "data" structure debugfs filesystem entries. It would be nice to use
* simple_attr_read directly, but we need to make sure that the data.lock
- * spinlock is held during the actual read (even though we likely won't ever
- * actually race here as the updater runs under a stop_machine context).
+ * is held during the actual read.
*/
static ssize_t simple_data_read(struct file *filp, char __user *ubuf,
size_t cnt, loff_t *ppos, const u64 *entry)
@@ -478,8 +470,7 @@ static ssize_t simple_data_read(struct f
* This function provides a generic write implementation for the global state
* "data" structure debugfs filesystem entries. It would be nice to use
* simple_attr_write directly, but we need to make sure that the data.lock
- * spinlock is held during the actual write (even though we likely won't ever
- * actually race here as the updater runs under a stop_machine context).
+ * is held during the actual write.
*/
static ssize_t simple_data_write(struct file *filp, const char __user *ubuf,
size_t cnt, loff_t *ppos, u64 *entry)

94
debian/patches/features/all/rt/hwlat-detector-Use-trace_clock_local-if-available.patch vendored Normal file
View File

@ -0,0 +1,94 @@
From 4aaca90c0255caee9a55371afaecb32365123762 Mon Sep 17 00:00:00 2001
From: Steven Rostedt <rostedt@goodmis.org>
Date: Mon, 19 Aug 2013 17:33:26 -0400
Subject: [PATCH 2/3] hwlat-detector: Use trace_clock_local if available
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
As ktime_get() calls into the timing code which does a read_seq(), it
may be affected by other CPUS that touch that lock. To remove this
dependency, use the trace_clock_local() which is already exported
for module use. If CONFIG_TRACING is enabled, use that as the clock,
otherwise use ktime_get().
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
drivers/misc/hwlat_detector.c | 34 +++++++++++++++++++++++++---------
1 file changed, 25 insertions(+), 9 deletions(-)
--- a/drivers/misc/hwlat_detector.c
+++ b/drivers/misc/hwlat_detector.c
@@ -51,6 +51,7 @@
#include <linux/version.h>
#include <linux/delay.h>
#include <linux/slab.h>
+#include <linux/trace_clock.h>
#define BUF_SIZE_DEFAULT 262144UL /* 8K*(sizeof(entry)) */
#define BUF_FLAGS (RB_FL_OVERWRITE) /* no block on full */
@@ -211,6 +212,21 @@ static struct sample *buffer_get_sample(
return sample;
}
+#ifndef CONFIG_TRACING
+#define time_type ktime_t
+#define time_get() ktime_get()
+#define time_to_us(x) ktime_to_us(x)
+#define time_sub(a, b) ktime_sub(a, b)
+#define init_time(a, b) (a).tv64 = b
+#define time_u64(a) (a).tv64
+#else
+#define time_type u64
+#define time_get() trace_clock_local()
+#define time_to_us(x) div_u64(x, 1000)
+#define time_sub(a, b) ((a) - (b))
+#define init_time(a, b) a = b
+#define time_u64(a) a
+#endif
/**
* get_sample - sample the CPU TSC and look for likely hardware latencies
* @unused: This is not used but is a part of the stop_machine API
@@ -220,23 +236,23 @@ static struct sample *buffer_get_sample(
*/
static int get_sample(void *unused)
{
- ktime_t start, t1, t2, last_t2;
+ time_type start, t1, t2, last_t2;
s64 diff, total = 0;
u64 sample = 0;
u64 outer_sample = 0;
int ret = 1;
- last_t2.tv64 = 0;
- start = ktime_get(); /* start timestamp */
+ init_time(last_t2, 0);
+ start = time_get(); /* start timestamp */
do {
- t1 = ktime_get(); /* we'll look for a discontinuity */
- t2 = ktime_get();
+ t1 = time_get(); /* we'll look for a discontinuity */
+ t2 = time_get();
- if (last_t2.tv64) {
+ if (time_u64(last_t2)) {
/* Check the delta from the outer loop (t2 to next t1) */
- diff = ktime_to_us(ktime_sub(t1, last_t2));
+ diff = time_to_us(time_sub(t1, last_t2));
/* This shouldn't happen */
if (diff < 0) {
printk(KERN_ERR BANNER "time running backwards\n");
@@ -247,10 +263,10 @@ static int get_sample(void *unused)
}
last_t2 = t2;
- total = ktime_to_us(ktime_sub(t2, start)); /* sample width */
+ total = time_to_us(time_sub(t2, start)); /* sample width */
/* This checks the inner loop (t1 to t2) */
- diff = ktime_to_us(ktime_sub(t2, t1)); /* current diff */
+ diff = time_to_us(time_sub(t2, t1)); /* current diff */
/* This shouldn't happen */
if (diff < 0) {

2
debian/patches/features/all/rt/hwlatdetect.patch vendored
View File

@ -1,7 +1,7 @@
Subject: hwlatdetect.patch
From: Carsten Emde <C.Emde@osadl.org>
Date: Tue, 19 Jul 2011 13:53:12 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Jon Masters developed this wonderful SMI detector. For details please
consult Documentation/hwlat_detector.txt. It could be ported to Linux

2
debian/patches/features/all/rt/i2c-omap-drop-the-lock-hard-irq-context.patch vendored
View File

@ -2,7 +2,7 @@ From 5145351047b216cca13aaca99f939a9a594c6c4d Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 21 Mar 2013 11:35:49 +0100
Subject: [PATCH 2/3] i2c/omap: drop the lock hard irq context
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
The lock is taken while reading two registers. On RT the first lock is
taken in hard irq where it might sleep and in the threaded irq.

2
debian/patches/features/all/rt/i915_compile_fix.patch vendored
View File

@ -1,6 +1,6 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Subject: gpu/i915: don't open code these things
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
The opencode part is gone in 1f83fee0 ("drm/i915: clear up wedged transitions")
the owner check is still there.

2
debian/patches/features/all/rt/ide-use-nort-local-irq-variants.patch vendored
View File

@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:30:16 -0500
Subject: ide: Do not disable interrupts for PREEMPT-RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Use the local_irq_*_nort variants.

2
debian/patches/features/all/rt/idle-state.patch vendored
View File

@ -1,7 +1,7 @@
Subject: sched: Init idle->on_rq in init_idle()
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 09 Jan 2013 23:03:29 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/idr-use-local-lock-for-protection.patch vendored
View File

@ -1,6 +1,6 @@
From: Thomas Gleixner <tglx@linutronix.de>
Subject: idr: Use local lock instead of preempt enable/disable
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
We need to protect the per cpu variable and prevent migration.

2
debian/patches/features/all/rt/infiniband-mellanox-ib-use-nort-irq.patch vendored
View File

@ -1,7 +1,7 @@
From: Sven-Thorsten Dietrich <sdietrich@novell.com>
Date: Fri, 3 Jul 2009 08:30:35 -0500
Subject: infiniband: Mellanox IB driver patch use _nort() primitives
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Fixes in_atomic stack-dump, when Mellanox module is loaded into the RT
Kernel.

2
debian/patches/features/all/rt/inpt-gameport-use-local-irq-nort.patch vendored
View File

@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:30:16 -0500
Subject: input: gameport: Do not disable interrupts on PREEMPT_RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Use the _nort() primitives.

2
debian/patches/features/all/rt/ipc-make-rt-aware.patch vendored
View File

@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:30:12 -0500
Subject: ipc: Make the ipc code -rt aware
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
RT serializes the code with the (rt)spinlock but keeps preemption
enabled. Some parts of the code need to be atomic nevertheless.

2
debian/patches/features/all/rt/ipc-mqueue-add-a-critical-section-to-avoid-a-deadlock.patch vendored
View File

@ -1,7 +1,7 @@
Subject: ipc/mqueue: Add a critical section to avoid a deadlock
From: KOBAYASHI Yoshitake <yoshitake.kobayashi@toshiba.co.jp>
Date: Sat, 23 Jul 2011 11:57:36 +0900
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
(Repost for v3.0-rt1 and changed the distination addreses)
I have tested the following patch on v3.0-rt1 with PREEMPT_RT_FULL.

2
debian/patches/features/all/rt/ipc-sem-rework-semaphore-wakeups.patch vendored
View File

@ -1,7 +1,7 @@
Subject: ipc/sem: Rework semaphore wakeups
From: Peter Zijlstra <peterz@infradead.org>
Date: Wed, 14 Sep 2011 11:57:04 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Subject: ipc/sem: Rework semaphore wakeups
From: Peter Zijlstra <a.p.zijlstra@chello.nl>

6
debian/patches/features/all/rt/irq-allow-disabling-of-softirq-processing-in-irq-thread-context.patch vendored
View File

@ -1,7 +1,7 @@
Subject: genirq: Allow disabling of softirq processing in irq thread context
From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 31 Jan 2012 13:01:27 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
The processing of softirqs in irq thread context is a performance gain
for the non-rt workloads of a system, but it's counterproductive for
@ -65,7 +65,7 @@ Cc: stable-rt@vger.kernel.org
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -783,7 +783,15 @@ irq_forced_thread_fn(struct irq_desc *de
@@ -856,7 +856,15 @@ irq_forced_thread_fn(struct irq_desc *de
local_bh_disable();
ret = action->thread_fn(action->irq, action->dev_id);
irq_finalize_oneshot(desc, action);
@ -82,7 +82,7 @@ Cc: stable-rt@vger.kernel.org
return ret;
}
@@ -1128,6 +1136,9 @@ __setup_irq(unsigned int irq, struct irq
@@ -1201,6 +1209,9 @@ __setup_irq(unsigned int irq, struct irq
irqd_set(&desc->irq_data, IRQD_NO_BALANCING);
}

2
debian/patches/features/all/rt/jump-label-rt.patch vendored
View File

@ -1,7 +1,7 @@
Subject: jump-label-rt.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 13 Jul 2011 11:03:16 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/kconfig-disable-a-few-options-rt.patch vendored
View File

@ -1,7 +1,7 @@
Subject: kconfig-disable-a-few-options-rt.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 24 Jul 2011 12:11:43 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Disable stuff which is known to have issues on RT

2
debian/patches/features/all/rt/kconfig-preempt-rt-full.patch vendored
View File

@ -1,7 +1,7 @@
Subject: kconfig-preempt-rt-full.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 29 Jun 2011 14:58:57 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/kernel-cpu-fix-cpu-down-problem-if-kthread-s-cpu-is-.patch vendored
View File

@ -3,7 +3,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 7 Jun 2013 22:37:06 +0200
Subject: [PATCH] kernel/cpu: fix cpu down problem if kthread's cpu is
going down
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
If kthread is pinned to CPUx and CPUx is going down then we get into
trouble:

2
debian/patches/features/all/rt/kernel-hotplug-restore-original-cpu-mask-oncpu-down.patch vendored
View File

@ -2,7 +2,7 @@ From 4c6df3d78817c20a147c0291f6600d002c0910d3 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 14 Jun 2013 17:16:35 +0200
Subject: [PATCH] kernel/hotplug: restore original cpu mask oncpu/down
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
If a task which is allowed to run only on CPU X puts CPU Y down then it
will be allowed on all CPUs but the on CPU Y after it comes back from

2
debian/patches/features/all/rt/kgb-serial-hackaround.patch vendored
View File

@ -1,7 +1,7 @@
From: Jason Wessel <jason.wessel@windriver.com>
Date: Thu, 28 Jul 2011 12:42:23 -0500
Subject: kgdb/serial: Short term workaround
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
On 07/27/2011 04:37 PM, Thomas Gleixner wrote:
> - KGDB (not yet disabled) is reportedly unusable on -rt right now due

4
debian/patches/features/all/rt/latency-hist.patch vendored
View File

@ -1,7 +1,7 @@
Subject: latency-hist.patch
From: Carsten Emde <C.Emde@osadl.org>
Date: Tue, 19 Jul 2011 14:03:41 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
This patch provides a recording mechanism to store data of potential
sources of system latencies. The recordings separately determine the
@ -229,7 +229,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
void *start_site;
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1409,6 +1409,12 @@ struct task_struct {
@@ -1410,6 +1410,12 @@ struct task_struct {
unsigned long trace;
/* bitmask and counter of trace recursion */
unsigned long trace_recursion;

2
debian/patches/features/all/rt/lglocks-rt.patch vendored
View File

@ -1,7 +1,7 @@
Subject: lglocks-rt.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 15 Jun 2011 11:02:21 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/list-add-list-last-entry.patch vendored
View File

@ -1,7 +1,7 @@
Subject: list-add-list-last-entry.patch
From: Peter Zijlstra <peterz@infradead.org>
Date: Tue, 21 Jun 2011 11:22:36 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/list_bl.h-make-list-head-locking-RT-safe.patch vendored
View File

@ -1,7 +1,7 @@
From: Paul Gortmaker <paul.gortmaker@windriver.com>
Date: Fri, 21 Jun 2013 15:07:25 -0400
Subject: [PATCH] list_bl.h: make list head locking RT safe
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.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

2
debian/patches/features/all/rt/local-irq-rt-depending-variants.patch vendored
View File

@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 21 Jul 2009 22:34:14 +0200
Subject: rt: local_irq_* variants depending on RT/!RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Add local_irq_*_(no)rt variant which are mainly used to break
interrupt disabled sections on PREEMPT_RT or to explicitely disable

2
debian/patches/features/all/rt/local-var.patch vendored
View File

@ -1,7 +1,7 @@
Subject: local-var.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 24 Jun 2011 18:40:37 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/local-vars-migrate-disable.patch vendored
View File

@ -1,7 +1,7 @@
Subject: local-vars-migrate-disable.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 28 Jun 2011 20:42:16 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

4
debian/patches/features/all/rt/localversion.patch vendored
View File

@ -1,7 +1,7 @@
Subject: localversion.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 08 Jul 2011 20:25:16 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
@ -13,4 +13,4 @@ Link: http://lkml.kernel.org/n/tip-8vdw4bfcsds27cvox6rpb334@git.kernel.org
--- /dev/null
+++ b/localversion-rt
@@ -0,0 +1 @@
+-rt3
+-rt7

2
debian/patches/features/all/rt/lockdep-no-softirq-accounting-on-rt.patch vendored
View File

@ -1,7 +1,7 @@
Subject: lockdep-rt.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 17 Jul 2011 18:51:23 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.6-rt3.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

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