3 files changed, 16 insertions, 1 deletions

diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
index 5bdbc744e773..17c29dca8354 100644
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -206,6 +206,7 @@ struct hrtimer_cpu_base {
 struct clock_event_device;
 
 extern void clock_was_set(void);
+extern void hres_timers_resume(void);
 extern void hrtimer_interrupt(struct clock_event_device *dev);
 
 /*
@@ -236,6 +237,8 @@ static inline ktime_t hrtimer_cb_get_time(struct hrtimer *timer)
  */
 static inline void clock_was_set(void) { }
 
+static inline void hres_timers_resume(void) { }
+
 /*
  * In non high resolution mode the time reference is taken from
  * the base softirq time variable.
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 067ba2c05328..b74860aaf5f1 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -459,6 +459,18 @@ void clock_was_set(void)
 }
 
 /*
+ * During resume we might have to reprogram the high resolution timer
+ * interrupt (on the local CPU):
+ */
+void hres_timers_resume(void)
+{
+        WARN_ON_ONCE(num_online_cpus() > 1);
+
+        /* Retrigger the CPU local events: */
+        retrigger_next_event(NULL);
+}
+
+/*
  * Check, whether the timer is on the callback pending list
  */
 static inline int hrtimer_cb_pending(const struct hrtimer *timer)
diff --git a/kernel/timer.c b/kernel/timer.c
index 440048acaea1..dd6c2c1c561b 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1016,7 +1016,7 @@ static int timekeeping_resume(struct sys_device *dev)
         clockevents_notify(CLOCK_EVT_NOTIFY_RESUME, NULL);
 
         /* Resume hrtimers */
-        clock_was_set();
+        hres_timers_resume();
 
         return 0;
 }