Re: [PATCH -v3] perf, x86: try to handle unknown nmis with running perfctrs

Cyrill Gorcunov
2010-08-24T18:55:11Z

On Tue, Aug 24, 2010 at 02:46:58PM -0400, Don Zickus wrote:
> On Tue, Aug 24, 2010 at 09:28:06PM +0400, Cyrill Gorcunov wrote:
> > On Tue, Aug 24, 2010 at 07:15:05PM +0200, Robert Richter wrote:
> > > On 23.08.10 04:53:39, Ingo Molnar wrote:
> > > > Ok, to not hold up the perf/urgent flow i zapped these two commits for
> > > > the time being:
> > > >
> > > > 4a31beb: perf, x86: Fix handle_irq return values
> > > > 8e3e42b: perf, x86: Try to handle unknown nmis with an enabled PMU
> > >
> > > Ingo, are those commits in some branch to fetch them for testing? I
> > > did not find them in tip/master.
> > >
> > > Thanks,
> > >
> > > -Robert
> > >
> > > --
> > > Advanced Micro Devices, Inc.
> > > Operating System Research Center
> > >
> >
> > Robert, they should be in -tip tree, I have
> >
> > | commit 4a31bebe71ab2e4f6ecd6e5f9f2ac9f0ff38ff76
> > | Author: Peter Zijlstra <a.p.zijlstra@chello.nl>
> > | Date: Thu Aug 19 16:28:00 2010 +0200
> > |
> > | perf, x86: Fix handle_irq return values
>
> Has anyone else seen kernel panics when enabling the LOCKUP_DETECTOR or
> apply Robert's patch? I keep getting a panic with unable to handle paging
> request everytime either Robert's patch or the lockup detector uses
> __get_cpu_var(). And only on 2.6.36 code.
>
> Cheers,
> Don
>

I use 2.6.34 atm. Letme try 2.6.36 (which might require some time to recompile).

-- Cyrill