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    SubjectRe: [RFC][PATCH 2/9] perf: core, remove hw_perf_event_init
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    On Mon, 2010-05-10 at 17:26 +0800, Lin Ming wrote:
    > A new field "pmu_id" is added to struct perf_event_attr.
    >
    > 2 new functions: perf_event_register_pmu, perf_event_lookup_pmu
    > perf_event_register_pmu: the pmu registration facility
    > perf_event_lookup_pmu: lookup the pmu via the passed in event->attr.pmu_id.
    >
    > A new api pmu->init_event to replace hw_perf_event_init

    Another problem, this patch breaks all of perf by removing the weak call
    before there is a replacement.

    Please rework such that there is a smooth transition.

    Also, for compatibilities sake, the cpu pmu will be required to get
    pmu_id==0, this doesn't provide that.



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