Re: nohz fail (was: perf related boot hang.)

From: Dave Jones
Date: Tue Sep 02 2014 - 09:42:15 EST


On Mon, Sep 01, 2014 at 10:14:31PM +0200, Frederic Weisbecker wrote:
> On Fri, Aug 22, 2014 at 10:00:09AM -0400, Dave Jones wrote:
> > On Fri, Aug 22, 2014 at 08:01:48AM +0200, Catalin Iacob wrote:
> > > On Thu, Aug 21, 2014 at 4:56 PM, Frederic Weisbecker <fweisbec@xxxxxxxxx> wrote:
> > > > Can you please test the series I just posted: "[RFC PATCH 0/9] nohz:
> > > > Nohz full kick fixes"?
> > >
> > > Before applying the series I tried one more Firefox build which
> > > triggered the panic after less than 5 minutes.
> > >
> > > After applying the series I did 2 full builds (around 60 minutes in
> > > total) with no problem.
> >
> > Seems to be working fine here too after fuzzing for 17 hours so far.
>
> Thanks a lot for testing this guys!
>
> I'll send "nohz: Restore NMI safe local irq work for local nohz kick"
> as a fix for 3.17 and the rest will have to wait for 3.18 as it's a complicated
> fix for a long standing bug.
>
> Can I apply your Tested-by from you both?

Sure, I haven't seen any recurrance of this since applying your patches.

Dave


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