Yanfei XuandGreg Kroah-Hartman 562d350a88 locking/rwsem: Disable preemption for spinning region ...

[ Upstream commit 7cdacc5f52 ]

The spinning region rwsem_spin_on_owner() should not be preempted,
however the rwsem_down_write_slowpath() invokes it and don't disable
preemption. Fix it by adding a pair of preempt_disable/enable().

Signed-off-by: Yanfei Xu <yanfei.xu@windriver.com>
[peterz: Fix CONFIG_RWSEM_SPIN_ON_OWNER=n build]
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Waiman Long <longman@redhat.com>
Link: https://lore.kernel.org/r/20211013134154.1085649-3-yanfei.xu@windriver.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

2021-11-18 19:16:16 +01:00

..

irqflag-debug.c

lockdep: Noinstr annotate warn_bogus_irq_restore()

2021-02-10 14:44:39 +01:00

lock_events_list.h

locking/rwsem: Remove reader optimistic spinning

2020-12-09 17:08:48 +01:00

lock_events.c

…

lock_events.h

…

lockdep_internals.h

lockdep: Allow tuning tracing capacity constants.

2021-04-05 20:33:57 +09:00

lockdep_proc.c

locking/lockdep: Fix meaningless /proc/lockdep output of lock classes on !CONFIG_PROVE_LOCKING

2021-07-05 10:44:52 +02:00

lockdep_states.h

…

lockdep.c

locking/lockdep: Avoid RCU-induced noinstr fail

2021-11-18 19:16:09 +01:00

locktorture.c

locktorture: Count lock readers

2021-07-27 11:39:30 -07:00

Makefile

locking/ww_mutex: Implement rtmutex based ww_mutex API functions

2021-08-17 19:05:26 +02:00

mcs_spinlock.h

locking: Fix typos in comments

2021-03-22 02:45:52 +01:00

mutex-debug.c

locking/ww_mutex: Gather mutex_waiter initialization

2021-08-17 19:04:41 +02:00

mutex.c

locking/ww_mutex: Initialize waiter.ww_ctx properly

2021-08-20 12:15:54 +02:00

mutex.h

locking/mutex: Move the 'struct mutex_waiter' definition from <linux/mutex.h> to the internal header

2021-08-17 18:24:31 +02:00

osq_lock.c

locking: Fix typos in comments

2021-03-22 02:45:52 +01:00

percpu-rwsem.c

locking/percpu-rwsem: Use this_cpu_{inc,dec}() for read_count

2020-09-16 16:26:56 +02:00

qrwlock.c

locking/qrwlock: Cleanup queued_write_lock_slowpath()

2021-05-06 15:33:49 +02:00

qspinlock_paravirt.h

…

qspinlock_stat.h

…

qspinlock.c

…

rtmutex_api.c

locking/rtmutex: Prevent lockdep false positive with PI futexes

2021-08-17 19:06:02 +02:00

rtmutex_common.h

locking/rtmutex: Dont dereference waiter lockless

2021-08-25 15:42:32 +02:00

rtmutex.c

locking/rtmutex: Fix ww_mutex deadlock check

2021-09-09 10:31:22 +02:00

rwbase_rt.c

locking/rwbase: Take care of ordering guarantee for fastpath reader

2021-09-15 17:49:16 +02:00

rwsem.c

locking/rwsem: Disable preemption for spinning region

2021-11-18 19:16:16 +01:00

semaphore.c

locking/semaphore: Add might_sleep() to down_*() family

2021-08-20 12:33:17 +02:00

spinlock_debug.c

locking/rwlock: Provide RT variant

2021-08-17 17:50:51 +02:00

spinlock_rt.c

locking/spinlock/rt: Prepare for RT local_lock

2021-08-17 19:06:13 +02:00

spinlock.c

locking/rwlock: Provide RT variant

2021-08-17 17:50:51 +02:00

test-ww_mutex.c

…

ww_mutex.h

locking/ww_mutex: Add rt_mutex based lock type and accessors

2021-08-17 19:05:11 +02:00

ww_rt_mutex.c

locking/ww_mutex: Implement rtmutex based ww_mutex API functions

2021-08-17 19:05:26 +02:00