[tip:locking/core] irq/timings: Use lockdep to assert IRQs are disabled/enabled

tip-bot for Frederic Weisbecker
2017-11-08T10:59:58Z

Commit-ID: a934d4d15f040cdd254350e7270b35cc7521e12e
Gitweb: https://git.kernel.org/tip/a934d4d15f040cdd254350e7270b35cc7521e12e
Author: Frederic Weisbecker <frederic@kernel.org>
AuthorDate: Mon, 6 Nov 2017 16:01:25 +0100
Committer: Ingo Molnar <mingo@kernel.org>
CommitDate: Wed, 8 Nov 2017 11:13:52 +0100

irq/timings: 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/1509980490-4285-10-git-send-email-frederic@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
kernel/irq/timings.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/irq/timings.c b/kernel/irq/timings.c
index c8c1d07..e0923fa 100644
--- a/kernel/irq/timings.c
+++ b/kernel/irq/timings.c
@@ -264,7 +264,7 @@ u64 irq_timings_next_event(u64 now)
* order to prevent the timings circular buffer to be updated
* while we are reading it.
*/
- WARN_ON_ONCE(!irqs_disabled());
+ lockdep_assert_irqs_disabled();

/*
* Number of elements in the circular buffer: If it happens it