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-rw-r--r--kernel/time/tick-sched.c55
1 files changed, 22 insertions, 33 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 360674c485f5..68a873af09a8 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -120,6 +120,25 @@ static void tick_sched_do_timer(ktime_t now)
tick_do_update_jiffies64(now);
}
+static void tick_sched_handle(struct tick_sched *ts, struct pt_regs *regs)
+{
+ /*
+ * When we are idle and the tick is stopped, we have to touch
+ * the watchdog as we might not schedule for a really long
+ * time. This happens on complete idle SMP systems while
+ * waiting on the login prompt. We also increment the "start of
+ * idle" jiffy stamp so the idle accounting adjustment we do
+ * when we go busy again does not account too much ticks.
+ */
+ if (ts->tick_stopped) {
+ touch_softlockup_watchdog();
+ if (is_idle_task(current))
+ ts->idle_jiffies++;
+ }
+ update_process_times(user_mode(regs));
+ profile_tick(CPU_PROFILING);
+}
+
/*
* NOHZ - aka dynamic tick functionality
*/
@@ -675,22 +694,7 @@ static void tick_nohz_handler(struct clock_event_device *dev)
dev->next_event.tv64 = KTIME_MAX;
tick_sched_do_timer(now);
-
- /*
- * When we are idle and the tick is stopped, we have to touch
- * the watchdog as we might not schedule for a really long
- * time. This happens on complete idle SMP systems while
- * waiting on the login prompt. We also increment the "start
- * of idle" jiffy stamp so the idle accounting adjustment we
- * do when we go busy again does not account too much ticks.
- */
- if (ts->tick_stopped) {
- touch_softlockup_watchdog();
- ts->idle_jiffies++;
- }
-
- update_process_times(user_mode(regs));
- profile_tick(CPU_PROFILING);
+ tick_sched_handle(ts, regs);
while (tick_nohz_reprogram(ts, now)) {
now = ktime_get();
@@ -818,23 +822,8 @@ static enum hrtimer_restart tick_sched_timer(struct hrtimer *timer)
* Do not call, when we are not in irq context and have
* no valid regs pointer
*/
- if (regs) {
- /*
- * When we are idle and the tick is stopped, we have to touch
- * the watchdog as we might not schedule for a really long
- * time. This happens on complete idle SMP systems while
- * waiting on the login prompt. We also increment the "start of
- * idle" jiffy stamp so the idle accounting adjustment we do
- * when we go busy again does not account too much ticks.
- */
- if (ts->tick_stopped) {
- touch_softlockup_watchdog();
- if (is_idle_task(current))
- ts->idle_jiffies++;
- }
- update_process_times(user_mode(regs));
- profile_tick(CPU_PROFILING);
- }
+ if (regs)
+ tick_sched_handle(ts, regs);
hrtimer_forward(timer, now, tick_period);