Messages in this thread | | | Subject | Re: idle may not sleep | From | Andi Kleen <> | Date | 22 May 1998 04:24:37 +0200 |
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Rik van Riel <H.H.vanRiel@phys.uu.nl> writes:
> On Thu, 21 May 1998, Rick Harlton wrote: > > > I'm wondering if any of you know what could be going on when Linux > > reports "idle may not sleep" a few times and then proceeds to lock up > > hard. I have not seen this problem and I suspect it may be hardware > > related. > > It basically means that the idle task (just an infinite > loop which executes the CPU hlt() instruction) tries to > add itself to a wait queue.
The problem is usually caused by an interrupt or a bottom half that tries to sleep. Because the idle task runs most of the time on many systems it usually is the victim.
-Andi
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