Commit da04c035 authored by Ingo Molnar's avatar Ingo Molnar Committed by Linus Torvalds
Browse files

[PATCH] Fix spinlock owner debugging



fix up the runqueue lock owner only if we truly did a context-switch
with the runqueue lock held. Impacts ia64, mips, sparc64 and arm.
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 33333373
......@@ -294,6 +294,10 @@ static inline void prepare_lock_switch(runqueue_t *rq, task_t *next)
static inline void finish_lock_switch(runqueue_t *rq, task_t *prev)
{
#ifdef CONFIG_DEBUG_SPINLOCK
/* this is a valid case when another task releases the spinlock */
rq->lock.owner = current;
#endif
spin_unlock_irq(&rq->lock);
}
......@@ -1529,10 +1533,6 @@ static inline void finish_task_switch(runqueue_t *rq, task_t *prev)
* Manfred Spraul <manfred@colorfullife.com>
*/
prev_task_flags = prev->flags;
#ifdef CONFIG_DEBUG_SPINLOCK
/* this is a valid case when another task releases the spinlock */
rq->lock.owner = current;
#endif
finish_arch_switch(prev);
finish_lock_switch(rq, prev);
if (mm)
......
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