Zqiang e354e3744b locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal ... [ Upstream commit 3a010c4932 ] When a interruptible mutex locker is interrupted by a signal without acquiring this lock and removed from the wait queue. if the mutex isn't contended enough to have a waiter put into the wait queue again, the setting of the WAITER bit will force mutex locker to go into the slowpath to acquire the lock every time, so if the wait queue is empty, the WAITER bit need to be clear. Fixes: 040a0a3710 ("mutex: Add support for wound/wait style locks") Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Zqiang <qiang.zhang@windriver.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20210517034005.30828-1-qiang.zhang@windriver.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-05-26 12:06:50 +02:00
..
lock_events_list.h
lock_events.c
lock_events.h
lockdep_internals.h	lockdep: Fix usage_traceoverflow	2020-10-09 08:53:08 +02:00
lockdep_proc.c	locking/lockdep: Fix overflow in presentation of average lock-time	2020-07-25 21:47:42 +02:00
lockdep_states.h
lockdep.c	locking/lockdep: Correct calling tracepoints	2021-05-26 12:06:50 +02:00
locktorture.c	locktorture: Make function torture_percpu_rwsem_init() static	2020-08-24 18:45:32 -07:00
Makefile
mcs_spinlock.h
mutex-debug.c	locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal	2021-05-26 12:06:50 +02:00
mutex-debug.h	locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal	2021-05-26 12:06:50 +02:00
mutex.c	locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal	2021-05-26 12:06:50 +02:00
mutex.h	locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal	2021-05-26 12:06:50 +02:00
osq_lock.c
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: Fix ordering in queued_write_lock_slowpath()	2021-04-28 13:40:00 +02:00
qspinlock_paravirt.h
qspinlock_stat.h
qspinlock.c	x86/kvm: Add "nopvspin" parameter to disable PV spinlocks	2020-07-08 16:21:57 -04:00
rtmutex_common.h	rtmutex: Remove unused argument from rt_mutex_proxy_unlock()	2021-01-30 13:55:17 +01:00
rtmutex-debug.c
rtmutex-debug.h
rtmutex.c	rtmutex: Remove unused argument from rt_mutex_proxy_unlock()	2021-01-30 13:55:17 +01:00
rtmutex.h
rwsem.c	rwsem: Implement down_read_interruptible	2021-01-09 13:46:24 +01:00
rwsem.h
semaphore.c
spinlock_debug.c
spinlock.c
test-ww_mutex.c