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perf tools: Check mem-loads auxiliary event
For some platforms, an auxiliary event has to be enabled simultaneously with the load latency event. For Alderlake, the auxiliary event is created in "cpu_core" pmu. So first we need to check the existing of "cpu_core" pmu and then check if this pmu has auxiliary event. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20210527001610.10553-2-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -11,8 +11,13 @@ static bool mem_loads_name__init;
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bool is_mem_loads_aux_event(struct evsel *leader)
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{
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if (!pmu_have_event("cpu", "mem-loads-aux"))
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return false;
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if (perf_pmu__find("cpu")) {
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if (!pmu_have_event("cpu", "mem-loads-aux"))
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return false;
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} else if (perf_pmu__find("cpu_core")) {
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if (!pmu_have_event("cpu_core", "mem-loads-aux"))
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return false;
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}
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return leader->core.attr.config == MEM_LOADS_AUX;
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}
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