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-rw-r--r--kernel/time/tick-sched.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 3e7ebc4646b7..52db9e3c526e 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -247,6 +247,21 @@ void tick_nohz_stop_sched_tick(void)
247 if (cpu == tick_do_timer_cpu) 247 if (cpu == tick_do_timer_cpu)
248 tick_do_timer_cpu = -1; 248 tick_do_timer_cpu = -1;
249 249
250 ts->idle_sleeps++;
251
252 /*
253 * delta_jiffies >= NEXT_TIMER_MAX_DELTA signals that
254 * there is no timer pending or at least extremly far
255 * into the future (12 days for HZ=1000). In this case
256 * we simply stop the tick timer:
257 */
258 if (unlikely(delta_jiffies >= NEXT_TIMER_MAX_DELTA)) {
259 ts->idle_expires.tv64 = KTIME_MAX;
260 if (ts->nohz_mode == NOHZ_MODE_HIGHRES)
261 hrtimer_cancel(&ts->sched_timer);
262 goto out;
263 }
264
250 /* 265 /*
251 * calculate the expiry time for the next timer wheel 266 * calculate the expiry time for the next timer wheel
252 * timer 267 * timer
@@ -254,7 +269,6 @@ void tick_nohz_stop_sched_tick(void)
254 expires = ktime_add_ns(last_update, tick_period.tv64 * 269 expires = ktime_add_ns(last_update, tick_period.tv64 *
255 delta_jiffies); 270 delta_jiffies);
256 ts->idle_expires = expires; 271 ts->idle_expires = expires;
257 ts->idle_sleeps++;
258 272
259 if (ts->nohz_mode == NOHZ_MODE_HIGHRES) { 273 if (ts->nohz_mode == NOHZ_MODE_HIGHRES) {
260 hrtimer_start(&ts->sched_timer, expires, 274 hrtimer_start(&ts->sched_timer, expires,