Commit 49d670fb authored Sep 22, 2008 by Thomas Gleixner

clockevents: prevent stale tick_next_period for onlining CPUs

Impact: possible hang on CPU onlining in timer one shot mode.

The tick_next_period variable is only used during boot on nohz/highres
enabled systems, but for CPU onlining it needs to be maintained when
the per cpu clock events device operates in one shot mode.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

parent 4faac97d

kernel/time/tick-sched.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -75,6 +75,9 @@ static void tick_do_update_jiffies64(ktime_t now)
		incr * ticks);
		}
		do_timer(++ticks);

		/* Keep the tick_next_period variable up to date */
		tick_next_period = ktime_add(last_jiffies_update, tick_period);
		}
		write_sequnlock(&xtime_lock);
		}