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ARM: perf: clean up event group validation
Currently, event group validation compares each event's 'pmu' pointer against the static 'pmu' pointer. This limits the code to supporting only 1 PMU. This patch changes the behaviour to consider an event's group leader's 'pmu' pointer as canonical for validation. This should ease later generalisation of the code to support multiple PMUs at once. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
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@ -348,8 +348,9 @@ validate_event(struct cpu_hw_events *cpuc,
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struct perf_event *event)
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{
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struct hw_perf_event fake_event = event->hw;
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struct pmu *leader_pmu = event->group_leader->pmu;
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if (event->pmu != &pmu || event->state <= PERF_EVENT_STATE_OFF)
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if (event->pmu != leader_pmu || event->state <= PERF_EVENT_STATE_OFF)
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return 1;
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return armpmu->get_event_idx(cpuc, &fake_event) >= 0;
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