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[PATCH] i386: Don't use the TSC in sched_clock if unstable 

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f9690982b8c2f9a2c65acdc113e758ec356676a3
caused a regression by letting sched_clock use the TSC even when cpufreq
disabled it. This caused scheduling weirdnesses.

Signed-off-by: Guillaume Chazarain <guichaz@yahoo.fr>
Signed-off-by: Andi Kleen <ak@suse.de>
hifive-unleashed-5.1
Guillaume Chazarain 2007-03-16 21:07:36 +01:00 committed by Andi Kleen
parent 43999d9e4e
commit 28f36f8fbf
1 changed files with 1 additions and 1 deletions
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arch/i386/kernel/tsc.c
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@ -105,7 +105,7 @@ unsigned long long sched_clock(void)
/*
* Fall back to jiffies if there's no TSC available:
*/
if (unlikely(tsc_disable))
if (tsc_unstable || unlikely(tsc_disable))
/* No locking but a rare wrong value is not a big deal: */
return (jiffies_64 - INITIAL_JIFFIES) * (1000000000 / HZ);