diff options
Diffstat (limited to 'kernel/sched/cputime.c')
| -rw-r--r-- | kernel/sched/cputime.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index 4f97896887ec..ff0dfca95420 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -12,6 +12,8 @@ #ifdef CONFIG_IRQ_TIME_ACCOUNTING +DEFINE_STATIC_KEY_FALSE(sched_clock_irqtime); + /* * There are no locks covering percpu hardirq/softirq time. * They are only modified in vtime_account, on corresponding CPU @@ -25,16 +27,15 @@ */ DEFINE_PER_CPU(struct irqtime, cpu_irqtime); -int sched_clock_irqtime; - void enable_sched_clock_irqtime(void) { - sched_clock_irqtime = 1; + static_branch_enable(&sched_clock_irqtime); } void disable_sched_clock_irqtime(void) { - sched_clock_irqtime = 0; + if (irqtime_enabled()) + static_branch_disable(&sched_clock_irqtime); } static void irqtime_account_delta(struct irqtime *irqtime, u64 delta, |