Re: is minimum udelay() not respected in preemptible SMP kernel-2.6.23?
From: Andi Kleen
Date: Wed Nov 07 2007 - 18:17:39 EST
> Ow. Yes, from my reading delay_tsc() can return early (or after
> heat-death-of-the-universe) if the TSCs are offset and if preemption
> migrates the calling task between CPUs.
>
> I suppose a lameo fix would be to disable preemption in delay_tsc().
Yes. Can't think of any better reasonable fix.
-Andi
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