Re: [PATCH -v2] perf, x86: try to handle unknown nmis with running perfctrs

Don Zickus
2010-08-12T18:21:47Z

On Thu, Aug 12, 2010 at 03:10:07PM +0200, Robert Richter wrote:
> On 12.08.10 00:00:58, Robert Richter wrote:
> > I was debuging this a little more, see version 2 below.
>
> I was testing the patch further, it properly filters perfctr
> back-to-back nmis. I was able to reliable detect unknown nmis
> triggered by the nmi button during high load perf sessions with
> multiple counters, no false positives.

For my own curiousity, what type of high load perf sessions are you using
to test this. I don't know perf well enough to have it generate events
across multiple perfctrs.

Thanks,
Don