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Diffstat (limited to 'kernel/sched/clock.c')
-rw-r--r--kernel/sched/clock.c13
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;