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[PATCH] lockdep: annotate scheduler runqueue locks

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Teach per-CPU runqueue locks and recursive locking code to the lock validator.
 Has no effect on non-lockdep kernels.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ingo Molnar 2006-07-03 00:25:10 -07:00 committed by Linus Torvalds
parent d730e882a1
commit fcb993712f
1 changed files with 2 additions and 0 deletions
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2
kernel/sched.c
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@ -266,6 +266,7 @@ struct runqueue {
unsigned long ttwu_cnt; unsigned long ttwu_cnt;
unsigned long ttwu_local; unsigned long ttwu_local;
#endif #endif
struct lock_class_key rq_lock_key;
}; };
static DEFINE_PER_CPU(struct runqueue, runqueues); static DEFINE_PER_CPU(struct runqueue, runqueues);
@ -6656,6 +6657,7 @@ void __init sched_init(void)
rq = cpu_rq(i); rq = cpu_rq(i);
spin_lock_init(&rq->lock); spin_lock_init(&rq->lock);
lockdep_set_class(&rq->lock, &rq->rq_lock_key);
rq->nr_running = 0; rq->nr_running = 0;
rq->active = rq->arrays; rq->active = rq->arrays;
rq->expired = rq->arrays + 1; rq->expired = rq->arrays + 1;