Oleg Nesterov 001dac627f locking/percpu-rwsem: Make use of the rcu_sync infrastructure ... Currently down_write/up_write calls synchronize_sched_expedited() twice, which is evil. Change this code to rely on rcu-sync primitives. This avoids the _expedited "big hammer", and this can be faster in the contended case or even in the case when a single thread does down_write/up_write in a loop. Of course, a single down_write() will take more time, but otoh it will be much more friendly to the whole system. To simplify the review this patch doesn't update the comments, fixed by the next change. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>		2015-10-06 11:25:31 -07:00
..
lglock.c
lockdep.c
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
locktorture.c	locktorture: Add torture tests for percpu_rwsem	2015-10-06 11:24:56 -07:00
Makefile	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-09-05 20:34:28 -07:00
mcs_spinlock.h
mutex-debug.c
mutex-debug.h
mutex.c
mutex.h
osq_lock.c
percpu-rwsem.c	locking/percpu-rwsem: Make use of the rcu_sync infrastructure	2015-10-06 11:25:31 -07:00
qrwlock.c	locking/qrwlock: Make use of _{acquire|release|relaxed}() atomics	2015-08-12 11:59:06 +02:00
qspinlock.c	locking/qspinlock/x86: Fix performance regression under unaccelerated VMs	2015-09-11 07:49:42 +02:00
qspinlock_paravirt.h	locking/pvqspinlock: Only kick CPU at unlock time	2015-08-03 10:57:11 +02:00
rtmutex-debug.c
rtmutex-debug.h
rtmutex.c
rtmutex.h
rtmutex_common.h
rwsem-spinlock.c
rwsem-xadd.c
rwsem.c
rwsem.h
semaphore.c
spinlock.c
spinlock_debug.c