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) ...@@ -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) 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); spin_unlock_irq(&rq->lock);
} }
...@@ -1529,10 +1533,6 @@ static inline void finish_task_switch(runqueue_t *rq, task_t *prev) ...@@ -1529,10 +1533,6 @@ static inline void finish_task_switch(runqueue_t *rq, task_t *prev)
* Manfred Spraul <manfred@colorfullife.com> * Manfred Spraul <manfred@colorfullife.com>
*/ */
prev_task_flags = prev->flags; 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_arch_switch(prev);
finish_lock_switch(rq, prev); finish_lock_switch(rq, prev);
if (mm) if (mm)
......
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