Commit dd7a1e56 authored Jun 27, 2008 by Johannes Weiner Committed by Ingo Molnar Jun 30, 2008

softlockup: fix watchdog task wakeup frequency



Updating the timestamp more often is pointless as we print the warnings
only if we exceed the threshold.  And the check for hung tasks relies on
the last timestamp, so it will keep working correctly, too.

Signed-off-by: Johannes Weiner <hannes@saeurebad.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 8d5be7f4

kernel/softlockup.c

+5 −2

Original line number	Diff line number	Diff line
		@@ -130,8 +130,11 @@ void softlockup_tick(void)

		now = get_timestamp(this_cpu);

		/* Wake up the high-prio watchdog task every second: */
		if (now > (touch_timestamp + 1))
		/*
		* Wake up the high-prio watchdog task twice per
		* threshold timespan.
		*/
		if (now > touch_timestamp + softlockup_thresh/2)
		wake_up_process(per_cpu(watchdog_task, this_cpu));

		/* Warn about unreasonable delays: */