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    SubjectRe: [PATCH -v3] perf, x86: try to handle unknown nmis with running perfctrs
    On Wed, Aug 25, 2010 at 05:20:37PM -0400, Don Zickus wrote:
    ...
    > The only problem is only one counter is overflowing in these cases, so we
    > would have to do it all the time, which may not be hard. But I was
    > thinking of something similar.
    >
    > For now, I am trying to force counter0 off, seeing that most of the perf
    > errata on nehalem have been on counter0. Or maybe I can get 'perf top' to
    > use something other than counter0 by running 'perf record' first?
    >
    > Cheers,
    > Don
    >
    > >
    > > -- Cyrill
    >

    Well, I never looked deep inside perf tool code itself. Perhaps the easiest
    (if you want to disable counter0) is just disable it in kernel and see how
    it goes, no?

    -- Cyrill


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