Waiman Long 5149cbac42 locking/rwsem: Add DEBUG_RWSEMS to look for lock/unlock mismatches ...

For a rwsem, locking can either be exclusive or shared. The corresponding
exclusive or shared unlock must be used. Otherwise, the protected data
structures may get corrupted or the lock may be in an inconsistent state.

In order to detect such anomaly, a new configuration option DEBUG_RWSEMS
is added which can be enabled to look for such mismatches and print
warnings that that happens.

Signed-off-by: Waiman Long <longman@redhat.com>
Acked-by: Davidlohr Bueso <dave@stgolabs.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1522445280-7767-2-git-send-email-longman@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2018-03-31 07:30:50 +02:00

..

lockdep_internals.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

lockdep_proc.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

lockdep_states.h

locking/lockdep: Rework FS_RECLAIM annotation

2017-08-10 12:29:03 +02:00

lockdep.c

lockdep: Make the lock debug output more useful

2018-03-29 14:41:40 +02:00

locktorture.c

torture: Eliminate torture_runnable and perf_runnable

2017-12-11 09:18:29 -08:00

Makefile

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mcs_spinlock.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mutex-debug.c

locking/mutex: Rework mutex::owner

2016-10-25 11:31:50 +02:00

mutex-debug.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mutex.c

locking/mutex: Improve documentation

2018-03-20 08:07:41 +01:00

mutex.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

osq_lock.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

percpu-rwsem.c

locking/percpu-rwsem: Replace waitqueue with rcuwait

2017-01-14 11:14:35 +01:00

qrwlock.c

locking/qrwlock: Prevent slowpath writers getting held up by fastpath

2017-10-25 10:57:25 +02:00

qspinlock_paravirt.h

locking/pvqspinlock: Implement hybrid PV queued/unfair locks

2017-11-08 10:10:04 +01:00

qspinlock_stat.h

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h>

2017-03-02 08:42:27 +01:00

qspinlock.c

locking/qspinlock: Ensure node->count is updated before initialising node

2018-02-13 14:50:14 +01:00

rtmutex_common.h

locking/rtmutex: Handle non enqueued waiters gracefully in remove_waiter()

2018-03-28 23:01:30 +02:00

rtmutex-debug.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

rtmutex-debug.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

rtmutex.c

locking/rtmutex: Handle non enqueued waiters gracefully in remove_waiter()

2018-03-28 23:01:30 +02:00

rtmutex.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

rwsem-spinlock.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

rwsem-xadd.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

rwsem.c

locking/rwsem: Add DEBUG_RWSEMS to look for lock/unlock mismatches

2018-03-31 07:30:50 +02:00

rwsem.h

locking/rwsem: Add DEBUG_RWSEMS to look for lock/unlock mismatches

2018-03-31 07:30:50 +02:00

semaphore.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/debug.h>

2017-03-02 08:42:34 +01:00

spinlock_debug.c

locking/spinlock/debug: Remove spinlock lockup detection code

2017-02-10 09:09:49 +01:00

spinlock.c

locking/core: Remove break_lock field when CONFIG_GENERIC_LOCKBREAK=y

2017-12-12 11:24:01 +01:00

test-ww_mutex.c

mm: treewide: remove GFP_TEMPORARY allocation flag

2017-09-13 18:53:16 -07:00