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sched/clock, sched/cputime: 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/1509980490-4285-12-git-send-email-frederic@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
hifive-unleashed-5.1
Frederic Weisbecker 2017-11-06 16:01:27 +01:00 committed by Ingo Molnar
parent 3c7169a3bf
commit 2c11dba00a
2 changed files with 2 additions and 3 deletions
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2
kernel/sched/clock.c
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@ -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);

3
kernel/sched/cputime.c
View File

@ -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);