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Message-ID: <20150318100258.54c3889e@gandalf.local.home>
Date: Wed, 18 Mar 2015 10:02:58 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: LKML <linux-kernel@...r.kernel.org>,
linux-rt-users <linux-rt-users@...r.kernel.org>
Cc: Thomas Gleixner <tglx@...utronix.de>,
Carsten Emde <C.Emde@...dl.org>,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
John Kacur <jkacur@...hat.com>,
Paul Gortmaker <paul.gortmaker@...driver.com>
Subject: [PATCH] Linux 3.4.106-rt132-rc4
Dear RT Folks,
This is the RT stable review cycle of patch 3.4.106-rt132-rc4.
Please scream at me if I messed something up. Please test the patches too.
The -rc release will be uploaded to kernel.org and will be deleted when
the final release is out. This is just a review release (or release candidate).
The pre-releases will not be pushed to the git repository, only the
final release is.
If all goes well, this patch will be converted to the next main release
on 3/20/2015.
Enjoy,
-- Steve
To build 3.4.106-rt132-rc4 directly, the following patches should be applied:
http://www.kernel.org/pub/linux/kernel/v3.x/linux-3.4.tar.xz
http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.4.106.xz
http://www.kernel.org/pub/linux/kernel/projects/rt/3.4/patch-3.4.106-rt132-rc4.patch.xz
You can also build from 3.4.106-rt131 by applying the incremental patch:
http://www.kernel.org/pub/linux/kernel/projects/rt/3.4/incr/patch-3.4.106-rt131-rt132-rc4.patch.xz
Changes from 3.4.106-rt131:
---
Daniel Wagner (1):
work-simple: Simple work queue implemenation
Josh Cartwright (1):
lockdep: selftest: fix warnings due to missing PREEMPT_RT conditionals
Mike Galbraith (4):
x86: UV: raw_spinlock conversion
scheduling while atomic in cgroup code
sunrpc: make svc_xprt_do_enqueue() use get_cpu_light()
fs,btrfs: fix rt deadlock on extent_buffer->lock
Paul Gortmaker (1):
sas-ata/isci: dont't disable interrupts in qc_issue handler
Sebastian Andrzej Siewior (3):
gpio: omap: use raw locks for locking
rt-mutex: avoid a NULL pointer dereference on deadlock
arm/futex: disable preemption during futex_atomic_cmpxchg_inatomic()
Steven Rostedt (1):
create-rt-enqueue
Steven Rostedt (Red Hat) (1):
Linux 3.4.106-rt132-rc4
Thomas Gleixner (14):
rtmutex: Simplify rtmutex_slowtrylock()
rtmutex: Simplify and document try_to_take_rtmutex()
rtmutex: No need to keep task ref for lock owner check
rtmutex: Clarify the boost/deboost part
rtmutex: Document pi chain walk
rtmutex: Simplify remove_waiter()
rtmutex: Confine deadlock logic to futex
rtmutex: Cleanup deadlock detector debug logic
rtmutex: Avoid pointless requeueing in the deadlock detection chain walk
futex: Make unlock_pi more robust
futex: Use futex_top_waiter() in lookup_pi_state()
futex: Split out the waiter check from lookup_pi_state()
futex: Split out the first waiter attachment from lookup_pi_state()
futex: Simplify futex_lock_pi_atomic() and make it more robust
Yadi.hu (1):
ARM: enable irq in translation/section permission fault handlers
Yong Zhang (1):
ARM: cmpxchg: define __HAVE_ARCH_CMPXCHG for armv6 and later
----
arch/arm/include/asm/cmpxchg.h | 2 +
arch/arm/include/asm/futex.h | 4 +
arch/arm/mm/fault.c | 6 +
arch/x86/include/asm/uv/uv_bau.h | 12 +-
arch/x86/include/asm/uv/uv_hub.h | 2 +-
arch/x86/kernel/apic/x2apic_uv_x.c | 12 +-
arch/x86/platform/uv/tlb_uv.c | 30 +-
arch/x86/platform/uv/uv_time.c | 21 +-
drivers/gpio/gpio-omap.c | 76 ++---
drivers/scsi/libsas/sas_ata.c | 4 +-
fs/btrfs/ctree.c | 4 +-
include/linux/rtmutex.h | 8 +-
include/linux/work-simple.h | 24 ++
kernel/futex.c | 407 +++++++++++--------------
kernel/rt.c | 8 +-
kernel/rtmutex-debug.c | 5 +-
kernel/rtmutex-debug.h | 7 +-
kernel/rtmutex-tester.c | 4 +-
kernel/rtmutex.c | 603 +++++++++++++++++++++++++++----------
kernel/rtmutex.h | 7 +-
kernel/rtmutex_common.h | 22 +-
kernel/sched/Makefile | 1 +
kernel/sched/work-simple.c | 172 +++++++++++
lib/locking-selftest.c | 27 ++
localversion-rt | 2 +-
mm/memcontrol.c | 7 +-
net/sunrpc/svc_xprt.c | 4 +-
27 files changed, 998 insertions(+), 483 deletions(-)
Diff from -rc3:
---
diff --git a/localversion-rt b/localversion-rt
index c70c2e0b2d32..2650b0e76d19 100644
--- a/localversion-rt
+++ b/localversion-rt
@@ -1 +1 @@
--rt132-rc3
+-rt132-rc4
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 8cfff961ad4b..8c3dd645ac10 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2016,15 +2016,13 @@ static bool consume_stock(struct mem_cgroup *memcg)
{
struct memcg_stock_pcp *stock;
bool ret = true;
- int cpu;
- cpu = get_cpu_light();
- stock = &per_cpu(memcg_stock, cpu);
+ stock = &get_cpu_var(memcg_stock);
if (memcg == stock->cached && stock->nr_pages)
stock->nr_pages--;
else /* need to call res_counter_charge */
ret = false;
- put_cpu_light();
+ put_cpu_var(memcg_stock);
return ret;
}
--
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