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    Subject[PATCH 3/5] MIPS/Perf-events: Check event state in validate_event()
    Date
    Ignore events that are not for this PMU or are in off/error state.

    Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@gmail.com>
    ---
    arch/mips/kernel/perf_event.c | 2 +-
    1 files changed, 1 insertions(+), 1 deletions(-)

    diff --git a/arch/mips/kernel/perf_event.c b/arch/mips/kernel/perf_event.c
    index 1ee44a3..9c6442a 100644
    --- a/arch/mips/kernel/perf_event.c
    +++ b/arch/mips/kernel/perf_event.c
    @@ -486,7 +486,7 @@ static int validate_event(struct cpu_hw_events *cpuc,
    {
    struct hw_perf_event fake_hwc = event->hw;

    - if (event->pmu && event->pmu != &pmu)
    + if (event->pmu != &pmu || event->state <= PERF_EVENT_STATE_OFF)
    return 0;

    return mipspmu->alloc_counter(cpuc, &fake_hwc) >= 0;
    --
    1.7.1


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