On Sat, May 26, 2007 at 06:35:24PM +0200, Thomas Gleixner wrote:
> On Sat, 2007-05-26 at 18:17 +0200, Folkert van Heusden wrote:
> > > > Seems to be hrtimers related - CC'ed Thomas.
> > > I doubt that. The tick interrupt just finds out, that the machine is
> > > stuck in rmmod.
> > > > > Also the rmmod hangs and would not exit even with kill -9. It also
> > > > > sucks up 100% cpu.
> > > Can you please enable CONFIG_PROVE_LOCKING ?
> >
> > Luckily I already had :-)
> > Here is its output:
>
> So there is no output from lockdep, during the rmmod hang ? The rmmod
> sucks 100% cpu, so it busy loops at some place. Looking at the stack
> trace this seems to be in:
>
>
> void cancel_rearming_delayed_workqueue(struct workqueue_struct *wq,
> struct delayed_work *dwork)
> {
> while (!cancel_delayed_work(dwork))
> flush_workqueue(wq);
> }
>
> which is not really related to timers :)
Looks like Steve added the delayed work bits, though I never saw any
of his patches.
--
Mathematics is the supreme nostalgia of our time.
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