Commit fcb99371 authored Jul 03, 2006 by Ingo Molnar Committed by Linus Torvalds Jul 03, 2006

[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>

parent d730e882

kernel/sched.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -266,6 +266,7 @@ struct runqueue {
		unsigned long ttwu_cnt;
		unsigned long ttwu_local;
		#endif
		struct lock_class_key rq_lock_key;
		};

		static DEFINE_PER_CPU(struct runqueue, runqueues);
		@@ -6656,6 +6657,7 @@ void __init sched_init(void)

		rq = cpu_rq(i);
		spin_lock_init(&rq->lock);
		lockdep_set_class(&rq->lock, &rq->rq_lock_key);
		rq->nr_running = 0;
		rq->active = rq->arrays;
		rq->expired = rq->arrays + 1;