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    SubjectRe: [RFC PATCH 2/3 v3] perf: Implement Nehalem uncore pmu
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    On Thu, 2010-12-02 at 13:20 +0800, Lin Ming wrote:
    > Changelogs of v3:
    >
    > - Allocate uncore data with kmalloc_node, like AMD NB stuff. (Peter
    > Zijlstra)
    >
    > - per-task uncore event is not allowed. Simply set pmu::task_ctx_nr =
    > perf_invalid_context. (Peter Zijlstra)

    <snip>

    > +
    > +static struct pmu uncore_pmu = {
    > + .event_init = uncore_pmu_event_init,
    > + .add = uncore_pmu_add,
    > + .del = uncore_pmu_del,
    > + .start = uncore_pmu_start,
    > + .stop = uncore_pmu_stop,
    > + .read = uncore_pmu_read,
    > +};

    Sorry, I send out an old version, need below additional code to disallow
    per-task uncore event.

    diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore.c b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
    index d2c10d8..d2a22ba 100644
    --- a/arch/x86/kernel/cpu/perf_event_intel_uncore.c
    +++ b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
    @@ -252,6 +252,8 @@ static void uncore_pmu_read(struct perf_event *event)
    }

    static struct pmu uncore_pmu = {
    + .task_ctx_nr = perf_invalid_context, /* per-task uncore event is not allowed */
    +
    .event_init = uncore_pmu_event_init,
    .add = uncore_pmu_add,
    .del = uncore_pmu_del,



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