From dd7a1e5615b1719c0fdffee1ea5a7820ac8141a6 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Fri, 27 Jun 2008 15:07:21 +0200 Subject: [PATCH] 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 Cc: Peter Zijlstra Signed-off-by: Ingo Molnar --- kernel/softlockup.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/kernel/softlockup.c b/kernel/softlockup.c index 97977ecc317..d53ab702a7d 100644 --- a/kernel/softlockup.c +++ b/kernel/softlockup.c @@ -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: */ -- 2.41.0