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    SubjectRe: [RFC][PATCH 3/9] perf: export registerred pmus via sysfs
    On Tue, 2010-05-11 at 16:15 +0200, Borislav Petkov wrote:
    > Another point I have is that MCEs don't need pmus so we should consider
    > having the ability to decouple events from pmus.

    Strictly speaking tracepoints are software events, which run off of a
    software 'pmu'. So no, we can't decouple, they need a 'pmu' context.

    > What you basically want to have is a tracepoint which is "persistent,"
    > as Ingo suggested earlier, and it buffers MCEs occurring at any time
    > into a ring buffer until a userspace daemon or similar sucks that data
    > out for processing (critical stuff is handled differently, of course).
    > And this should work on any x86 hw supporting MCA without hw perf
    > monitoring features.

    Try building x86 without perf hw support :/

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