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[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: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ingo Molnar 2005-09-13 11:17:59 +02:00 committed by Linus Torvalds
parent 33333373c4
commit da04c03503
1 changed files with 4 additions and 4 deletions
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8
kernel/sched.c
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@ -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)