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 <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Paul E. McKenney <[email protected]> --- kernel/time/tick-sched.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index c7a899c..dd4b7b4 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -198,7 +198,7 @@ static bool check_tick_dependency(atomic_t *dep) static bool can_stop_full_tick(int cpu, struct tick_sched *ts) { - WARN_ON_ONCE(!irqs_disabled()); + lockdep_assert_irqs_disabled(); if (unlikely(!cpu_online(cpu))) return false; @@ -960,8 +960,7 @@ void tick_nohz_idle_enter(void) { struct tick_sched *ts; - WARN_ON_ONCE(irqs_disabled()); - + lockdep_assert_irqs_enabled(); /* * Update the idle state in the scheduler domain hierarchy * when tick_nohz_stop_sched_tick() is called from the idle loop. -- 2.7.4
