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

Don Zickus
2010-08-24T18:47:31Z

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