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    SubjectRe: [RFC PATCHSET] sched,perf: unify tracers in sched and move perf on top of TP
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    On Tue, 2010-05-04 at 14:38 +0200, Tejun Heo wrote:
    >
    > This patchset does the following two things.
    >
    > * 0001-0007: Unify the three tracers (tracepoints, perf_events and
    > preempt/sched notifiers) in scheduler.

    Right, so I really don't like the SCHED_EVENT() thing much, esp the 3
    different function postfixes.

    > * 0008-0012: Move perf hooks in sched on top of tracepoints if TPs are
    > enabled.

    This seems to add a terrible amount of overhead for no particular
    reason.

    I know Ingo was pushing to consolidate things, but imho this cure is
    worse than the ailment.





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