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Message-ID: <20150318094329.63c9ec2a@gandalf.local.home>
Date: Wed, 18 Mar 2015 09:43:29 -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 3.14.34-rt32-rc4
Dear RT Folks,
This is the RT stable review cycle of patch 3.14.34-rt32-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 3.14.34-rt32-rc4 directly, the following patches should be applied:
http://www.kernel.org/pub/linux/kernel/v3.x/linux-3.14.tar.xz
http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.14.34.xz
http://www.kernel.org/pub/linux/kernel/projects/rt/3.14/patch-3.14.34-rt32-rc4.patch.xz
You can also build from 3.14.34-rt31 by applying the incremental patch:
http://www.kernel.org/pub/linux/kernel/projects/rt/3.14/incr/patch-3.14.34-rt31-rt32-rc4.patch.xz
Changes from 3.14.34-rt31:
---
Brad Mouring (1):
rtmutex.c: Fix incorrect waiter check
Daniel Wagner (2):
work-simple: Simple work queue implemenation
thermal: Defer thermal wakups to threads
Gustavo Bittencourt (1):
rtmutex: enable deadlock detection in ww_mutex_lock functions
Josh Cartwright (1):
lockdep: selftest: fix warnings due to missing PREEMPT_RT conditionals
Kevin Hao (1):
netpoll: guard the access to dev->npinfo with rcu_read_lock/unlock_bh() for CONFIG_PREEMPT_RT_FULL=y
Mike Galbraith (6):
rt,locking: fix __ww_mutex_lock_interruptible() lockdep annotation
x86: UV: raw_spinlock conversion
scheduling while atomic in cgroup code
sunrpc: make svc_xprt_do_enqueue() use get_cpu_light()
locking: ww_mutex: fix ww_mutex vs self-deadlock
fs,btrfs: fix rt deadlock on extent_buffer->lock
Paul E. McKenney (4):
timers: Track total number of timers in list
timers: Reduce __run_timers() latency for empty list
timers: Reduce future __run_timers() latency for newly emptied list
timers: Reduce future __run_timers() latency for first add to empty list
Paul Gortmaker (1):
sas-ata/isci: dont't disable interrupts in qc_issue handler
Sebastian Andrzej Siewior (5):
gpio: omap: use raw locks for locking
locking/rt-mutex: avoid a NULL pointer dereference on deadlock
arm/futex: disable preemption during futex_atomic_cmpxchg_inatomic()
Revert "rwsem-rt: Do not allow readers to nest"
fs/aio: simple simple work
Steven Rostedt (Red Hat) (3):
staging: Mark rtl8821ae as broken
Revert "timers: do not raise softirq unconditionally"
Linux 3.14.34-rt32-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
Yang Shi (1):
mips: rt: Replace pagefault_* to raw version
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/mips/mm/init.c | 4 +-
arch/x86/include/asm/uv/uv_bau.h | 14 +-
arch/x86/include/asm/uv/uv_hub.h | 2 +-
arch/x86/kernel/apic/x2apic_uv_x.c | 2 +-
arch/x86/platform/uv/tlb_uv.c | 26 +-
arch/x86/platform/uv/uv_time.c | 21 +-
drivers/gpio/gpio-omap.c | 72 ++--
drivers/scsi/libsas/sas_ata.c | 4 +-
drivers/staging/rtl8821ae/Kconfig | 1 +
drivers/thermal/x86_pkg_temp_thermal.c | 50 ++-
fs/aio.c | 24 +-
fs/btrfs/ctree.c | 4 +-
fs/btrfs/extent-tree.c | 8 -
include/linux/hrtimer.h | 3 +-
include/linux/netpoll.h | 16 +-
include/linux/rtmutex.h | 8 +-
include/linux/rwsem_rt.h | 1 +
include/linux/work-simple.h | 24 ++
kernel/futex.c | 402 +++++++++++------------
kernel/hrtimer.c | 31 +-
kernel/locking/rt.c | 37 ++-
kernel/locking/rtmutex-debug.c | 5 +-
kernel/locking/rtmutex-debug.h | 7 +-
kernel/locking/rtmutex-tester.c | 4 +-
kernel/locking/rtmutex.c | 582 ++++++++++++++++++++++++---------
kernel/locking/rtmutex.h | 7 +-
kernel/locking/rtmutex_common.h | 22 +-
kernel/sched/Makefile | 2 +-
kernel/sched/work-simple.c | 172 ++++++++++
kernel/timer.c | 72 ++--
lib/locking-selftest.c | 27 ++
localversion-rt | 2 +-
mm/memcontrol.c | 7 +-
net/sunrpc/svc_xprt.c | 4 +-
37 files changed, 1133 insertions(+), 546 deletions(-)
Diff from -rc3:
---
diff --git a/localversion-rt b/localversion-rt
index a745e52f1919..e2267abd0c4d 100644
--- a/localversion-rt
+++ b/localversion-rt
@@ -1 +1 @@
--rt32-rc3
+-rt32-rc4
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 6f4bcdb951d9..be24d2d186fa 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2453,18 +2453,16 @@ static bool consume_stock(struct mem_cgroup *memcg, unsigned int nr_pages)
{
struct memcg_stock_pcp *stock;
bool ret = true;
- int cpu;
if (nr_pages > CHARGE_BATCH)
return false;
- cpu = get_cpu_light();
- stock = &per_cpu(memcg_stock, cpu);
+ stock = &get_cpu_var(memcg_stock);
if (memcg == stock->cached && stock->nr_pages >= nr_pages)
stock->nr_pages -= 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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