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softlockup: fix watchdog task wakeup frequency 

The print_timestamp can never be bigger than the touch_timestamp, at
maximum it can be equal.  And if it is, the second check for
touch_timestamp + 1 bigger print_timestamp is always true, too.

The check for equality is sufficient as we proceed in one-second-steps
and are at least one second away from the last print-out if we have
another timestamp.

Signed-off-by: Johannes Weiner <hannes@saeurebad.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Johannes Weiner 2008-07-01 09:12:04 +02:00 committed by Ingo Molnar
parent dd7a1e5615
commit 3e2f69fdd1
1 changed files with 1 additions and 4 deletions
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5
kernel/softlockup.c
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@ -116,11 +116,8 @@ void softlockup_tick(void)
print_timestamp = per_cpu(print_timestamp, this_cpu);
/* report at most once a second */
if ((print_timestamp >= touch_timestamp &&
print_timestamp < (touch_timestamp + 1)) ||
did_panic) {
if (print_timestamp == touch_timestamp || did_panic)
return;
}
/* do not print during early bootup: */
if (unlikely(system_state != SYSTEM_RUNNING)) {