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-rw-r--r--kernel/time/tick-sched.c54
1 files changed, 24 insertions, 30 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index a402608..360674c 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -98,6 +98,28 @@ static ktime_t tick_init_jiffy_update(void)
return period;
}
+
+static void tick_sched_do_timer(ktime_t now)
+{
+ int cpu = smp_processor_id();
+
+#ifdef CONFIG_NO_HZ
+ /*
+ * Check if the do_timer duty was dropped. We don't care about
+ * concurrency: This happens only when the cpu in charge went
+ * into a long sleep. If two cpus happen to assign themself to
+ * this duty, then the jiffies update is still serialized by
+ * xtime_lock.
+ */
+ if (unlikely(tick_do_timer_cpu == TICK_DO_TIMER_NONE))
+ tick_do_timer_cpu = cpu;
+#endif
+
+ /* Check, if the jiffies need an update */
+ if (tick_do_timer_cpu == cpu)
+ tick_do_update_jiffies64(now);
+}
+
/*
* NOHZ - aka dynamic tick functionality
*/
@@ -648,24 +670,11 @@ static void tick_nohz_handler(struct clock_event_device *dev)
{
struct tick_sched *ts = &__get_cpu_var(tick_cpu_sched);
struct pt_regs *regs = get_irq_regs();
- int cpu = smp_processor_id();
ktime_t now = ktime_get();
dev->next_event.tv64 = KTIME_MAX;
- /*
- * Check if the do_timer duty was dropped. We don't care about
- * concurrency: This happens only when the cpu in charge went
- * into a long sleep. If two cpus happen to assign themself to
- * this duty, then the jiffies update is still serialized by
- * xtime_lock.
- */
- if (unlikely(tick_do_timer_cpu == TICK_DO_TIMER_NONE))
- tick_do_timer_cpu = cpu;
-
- /* Check, if the jiffies need an update */
- if (tick_do_timer_cpu == cpu)
- tick_do_update_jiffies64(now);
+ tick_sched_do_timer(now);
/*
* When we are idle and the tick is stopped, we have to touch
@@ -802,23 +811,8 @@ static enum hrtimer_restart tick_sched_timer(struct hrtimer *timer)
container_of(timer, struct tick_sched, sched_timer);
struct pt_regs *regs = get_irq_regs();
ktime_t now = ktime_get();
- int cpu = smp_processor_id();
-#ifdef CONFIG_NO_HZ
- /*
- * Check if the do_timer duty was dropped. We don't care about
- * concurrency: This happens only when the cpu in charge went
- * into a long sleep. If two cpus happen to assign themself to
- * this duty, then the jiffies update is still serialized by
- * xtime_lock.
- */
- if (unlikely(tick_do_timer_cpu == TICK_DO_TIMER_NONE))
- tick_do_timer_cpu = cpu;
-#endif
-
- /* Check, if the jiffies need an update */
- if (tick_do_timer_cpu == cpu)
- tick_do_update_jiffies64(now);
+ tick_sched_do_timer(now);
/*
* Do not call, when we are not in irq context and have
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