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watchdog: Fix rounding bug in get_sample_period()

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In get_sample_period(), softlockup_thresh is integer divided by
5 before the multiplication by NSEC_PER_SEC. This results in
softlockup_thresh being rounded down to the nearest integer
multiple of 5.

For example, a softlockup_thresh of 4 rounds down to 0.

Signed-off-by: Mandeep Singh Baines <[email protected]>
Cc: Marcin Slusarz <[email protected]>
Cc: Don Zickus <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Mandeep Singh Baines 2011-05-22 22:10:20 -07:00 • committed by Ingo Molnar
commit 824c6b7f62
1 changed files with 1 additions and 1 deletions
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2
kernel/watchdog.c
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@ -110,7 +110,7 @@ static unsigned long get_sample_period(void)
* increment before the hardlockup detector generates
* a warning
*/
return softlockup_thresh / 5 * NSEC_PER_SEC;
return softlockup_thresh * (NSEC_PER_SEC / 5);
}
/* Commands for resetting the watchdog */