forked from Minki/linux
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>
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@ -130,8 +130,11 @@ void softlockup_tick(void)
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now = get_timestamp(this_cpu);
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/* Wake up the high-prio watchdog task every second: */
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if (now > (touch_timestamp + 1))
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/*
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* Wake up the high-prio watchdog task twice per
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* threshold timespan.
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*/
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if (now > touch_timestamp + softlockup_thresh/2)
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wake_up_process(per_cpu(watchdog_task, this_cpu));
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/* Warn about unreasonable delays: */
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