diff options
Diffstat (limited to 'kernel/sched/clock.c')
| -rw-r--r-- | kernel/sched/clock.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/kernel/sched/clock.c b/kernel/sched/clock.c index c9b34c4e3ecc..6bd6a6731b21 100644 --- a/kernel/sched/clock.c +++ b/kernel/sched/clock.c @@ -59,6 +59,7 @@ #include <linux/ktime.h> #include <linux/sched.h> #include <linux/static_key.h> +#include <linux/workqueue.h> /* * Scheduler clock - returns current time in nanosec units. @@ -90,13 +91,23 @@ void set_sched_clock_stable(void) static_key_slow_dec(&__sched_clock_stable); } -void clear_sched_clock_stable(void) +static void __clear_sched_clock_stable(struct work_struct *work) { /* XXX worry about clock continuity */ if (sched_clock_stable()) static_key_slow_inc(&__sched_clock_stable); } +static DECLARE_WORK(sched_clock_work, __clear_sched_clock_stable); + +void clear_sched_clock_stable(void) +{ + if (keventd_up()) + schedule_work(&sched_clock_work); + else + __clear_sched_clock_stable(&sched_clock_work); +} + struct sched_clock_data { u64 tick_raw; u64 tick_gtod; |