Re: [patch] voluntary-preempt-2.6.8.1-P0

From: Ingo Molnar
Date: Sun Aug 15 2004 - 22:46:27 EST



* Lee Revell <rlrevell@xxxxxxxxxxx> wrote:

> On Sun, 2004-08-15 at 23:36, Ingo Molnar wrote:
> > doh - i think i found a brown-paperbag bug.
>
> Heh, this would explain all those latency traces with repeated
> calls to voluntary_resched...

hm, didnt those traces show preempt_schedule()?

this bug also fooled the latency tracer because the preempt count went
down to zero (hence the latency got reset), but in reality we skipped
the reschedule.

Ingo
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