Commit 3c7169a3 authored Nov 06, 2017 by Frederic Weisbecker Committed by Ingo Molnar Nov 08, 2017

irq_work: 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/1509980490-4285-11-git-send-email-frederic@kernel.org

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

parent a934d4d1

kernel/irq_work.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -188,7 +188,7 @@ void irq_work_tick(void)
		*/
		void irq_work_sync(struct irq_work *work)
		{
		WARN_ON_ONCE(irqs_disabled());
		lockdep_assert_irqs_enabled();

		while (work->flags & IRQ_WORK_BUSY)
		cpu_relax();

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