Commit 53bef3fd authored Nov 06, 2017 by Frederic Weisbecker Committed by Ingo Molnar Nov 08, 2017

timers/hrtimer: Use lockdep to assert IRQs are disabled/enabled

Use lockdep to check that IRQs are enabled or disabled as expected. This
way the sanity check only shows overhead when concurrency correctness
debug code is enabled.

Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: David S . Miller <davem@davemloft.net>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tejun Heo <tj@kernel.org>
Link: http://lkml.kernel.org/r/1509980490-4285-6-git-send-email-frederic@kernel.org

Signed-off-by: Ingo Molnar <mingo@kernel.org>

parent ebf3adba

kernel/time/hrtimer.c

+1 −3

Original line number	Diff line number	Diff line
		@@ -758,9 +758,7 @@ void clock_was_set(void)
		*/
		void hrtimers_resume(void)
		{
		WARN_ONCE(!irqs_disabled(),
		KERN_INFO "hrtimers_resume() called with IRQs enabled!");

		lockdep_assert_irqs_disabled();
		/* Retrigger on the local CPU */
		retrigger_next_event(NULL);
		/* And schedule a retrigger for all others */

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