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workqueue: mark lock acquisition on worker_maybe_bind_and_lock() 

worker_maybe_bind_and_lock() actually grabs gcwq->lock but was missing proper
annotation. Add it. So this patch will remove following sparse warnings:

 kernel/workqueue.c:1214:13: warning: context imbalance in 'worker_maybe_bind_and_lock' - wrong count at exit
 arch/x86/include/asm/irqflags.h:44:9: warning: context imbalance in 'worker_rebind_fn' - unexpected unlock
 kernel/workqueue.c:1991:17: warning: context imbalance in 'rescuer_thread' - unexpected unlock

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Namhyung Kim 2010-08-22 23:19:43 +09:00 committed by Tejun Heo
parent 06bd6ebffa
commit 972fa1c531
1 changed files with 1 additions and 0 deletions
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kernel/workqueue.c
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@ -1212,6 +1212,7 @@ static void worker_leave_idle(struct worker *worker)
* bound), %false if offline.
*/
static bool worker_maybe_bind_and_lock(struct worker *worker)
__acquires(&gcwq->lock)
{
struct global_cwq *gcwq = worker->gcwq;
struct task_struct *task = worker->task;