forked from Minki/linux
[PATCH] lockdep: annotate scheduler runqueue locks
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>
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@ -266,6 +266,7 @@ struct runqueue {
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unsigned long ttwu_cnt;
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unsigned long ttwu_local;
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#endif
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struct lock_class_key rq_lock_key;
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};
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static DEFINE_PER_CPU(struct runqueue, runqueues);
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@ -6656,6 +6657,7 @@ void __init sched_init(void)
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rq = cpu_rq(i);
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spin_lock_init(&rq->lock);
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lockdep_set_class(&rq->lock, &rq->rq_lock_key);
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rq->nr_running = 0;
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rq->active = rq->arrays;
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rq->expired = rq->arrays + 1;
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