Peter Zijlstra 6f942a1f26 locking/mutex: Don't assume TASK_RUNNING ...

We're going to make might_sleep() test for TASK_RUNNING, because
blocking without TASK_RUNNING will destroy the task state by setting
it to TASK_RUNNING.

There are a few occasions where its 'valid' to call blocking
primitives (and mutex_lock in particular) and not have TASK_RUNNING,
typically such cases are right before we set TASK_RUNNING anyhow.

Robustify the code by not assuming this; this has the beneficial side
effect of allowing optional code emission for fixing the above
might_sleep() false positives.

Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: Oleg Nesterov <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

2014-10-28 10:55:08 +01:00

..

lglock.c

locking: Move the lglocks code to kernel/locking/

2013-11-06 09:24:20 +01:00

lockdep_internals.h

lockdep: Increase static allocations

2014-04-18 14:20:50 +02:00

lockdep_proc.c

lockdep/proc: Fix lock-time avg computation

2013-11-11 12:41:34 +01:00

lockdep_states.h

…

lockdep.c

locking/lockdep: Revert qrwlock recusive stuff

2014-10-03 06:09:30 +02:00

locktorture.c

locktorture: Cleanup header usage

2014-09-30 00:10:02 -07:00

Makefile

locking/rwlocks: Introduce 'qrwlocks' - fair, queued rwlocks

2014-06-06 07:58:28 +02:00

mcs_spinlock.c

arch, locking: Ciao arch_mutex_cpu_relax()

2014-07-17 12:32:47 +02:00

mcs_spinlock.h

locking/mcs: Remove obsolete comment

2014-08-13 10:32:00 +02:00

mutex-debug.c

locking/mutex: Fix debug_mutexes

2014-04-11 10:40:35 +02:00

mutex-debug.h

…

mutex.c

locking/mutex: Don't assume TASK_RUNNING

2014-10-28 10:55:08 +01:00

mutex.h

locking/mutexes: Use MUTEX_SPIN_ON_OWNER when appropriate

2014-08-13 10:32:02 +02:00

percpu-rwsem.c

locking: Move the percpu-rwsem code to kernel/locking/

2013-11-06 09:24:22 +01:00

qrwlock.c

arch, locking: Ciao arch_mutex_cpu_relax()

2014-07-17 12:32:47 +02:00

rtmutex_common.h

rtmutex: Cleanup deadlock detector debug logic

2014-06-21 22:05:30 +02:00

rtmutex-debug.c

rtmutex: Cleanup deadlock detector debug logic

2014-06-21 22:05:30 +02:00

rtmutex-debug.h

rtmutex: Cleanup deadlock detector debug logic

2014-06-21 22:05:30 +02:00

rtmutex-tester.c

locking: Move the rtmutex code to kernel/locking/

2013-11-06 09:23:59 +01:00

rtmutex.c

locking/Documentation: Move locking related docs into Documentation/locking/

2014-08-13 10:32:03 +02:00

rtmutex.h

rtmutex: Cleanup deadlock detector debug logic

2014-06-21 22:05:30 +02:00

rwsem-spinlock.c

locking/rwsem: Rename 'activity' to 'count'

2014-07-16 14:56:55 +02:00

rwsem-xadd.c

locking/rwsem: Avoid double checking before try acquiring write lock

2014-10-03 06:09:29 +02:00

rwsem.c

locking/rwsem: Add CONFIG_RWSEM_SPIN_ON_OWNER

2014-07-16 14:57:13 +02:00

semaphore.c

locking/semaphore: Resolve some shadow warnings

2014-09-04 07:17:24 +02:00

spinlock_debug.c

locking: Move the spinlock code to kernel/locking/

2013-11-06 07:55:21 +01:00

spinlock.c

locking: Move the spinlock code to kernel/locking/

2013-11-06 07:55:21 +01:00