[PATCH 11/14] sched: Use lockdep to assert IRQs are disabled/enabled

[Frederic Weisbecker <frederic@kernel.org>]

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>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
 kernel/sched/clock.c   | 2 +-
 kernel/sched/cputime.c | 3 +--
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/kernel/sched/clock.c b/kernel/sched/clock.c
index ca0f8fc..e086bab 100644
--- a/kernel/sched/clock.c
+++ b/kernel/sched/clock.c
@@ -388,7 +388,7 @@ void sched_clock_tick(void)
 	if (unlikely(!sched_clock_running))
 		return;
 
-	WARN_ON_ONCE(!irqs_disabled());
+	lockdep_assert_irqs_disabled();
 
 	scd = this_scd();
 	__scd_stamp(scd);
diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c
index 14d2dbf..9be8b68 100644
--- a/kernel/sched/cputime.c
+++ b/kernel/sched/cputime.c
@@ -259,8 +259,7 @@ static inline u64 account_other_time(u64 max)
 {
 	u64 accounted;
 
-	/* Shall be converted to a lockdep-enabled lightweight check */
-	WARN_ON_ONCE(!irqs_disabled());
+	lockdep_assert_irqs_disabled();
 
 	accounted = steal_account_process_time(max);
 
-- 
2.7.4