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-rw-r--r--kernel/time/tick-sched.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index cb89fa8db11..5f9fb645b72 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -153,6 +153,7 @@ void tick_nohz_update_jiffies(void)
void tick_nohz_stop_sched_tick(void)
{
unsigned long seq, last_jiffies, next_jiffies, delta_jiffies, flags;
+ unsigned long rt_jiffies;
struct tick_sched *ts;
ktime_t last_update, expires, now, delta;
struct clock_event_device *dev = __get_cpu_var(tick_cpu_device).evtdev;
@@ -216,6 +217,10 @@ void tick_nohz_stop_sched_tick(void)
next_jiffies = get_next_timer_interrupt(last_jiffies);
delta_jiffies = next_jiffies - last_jiffies;
+ rt_jiffies = rt_needs_cpu(cpu);
+ if (rt_jiffies && rt_jiffies < delta_jiffies)
+ delta_jiffies = rt_jiffies;
+
if (rcu_needs_cpu(cpu))
delta_jiffies = 1;
/*