Messages in this thread | | | Date | Mon, 16 Oct 2023 20:26:15 +0800 | From | Leo Yan <> | Subject | Re: [PATCH v2 3/7] perf arm-spe: Move PMU initialization from default config code |
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On Thu, Oct 12, 2023 at 10:56:41AM -0700, Ian Rogers wrote: > Avoid setting PMU values in arm_spe_pmu_default_config, move to > perf_pmu__arch_init. > > Signed-off-by: Ian Rogers <irogers@google.com> > Reviewed-by: Adrian Hunter <adrian.hunter@intel.com> > --- > tools/perf/arch/arm/util/pmu.c | 2 ++ > tools/perf/arch/arm64/util/arm-spe.c | 3 --- > 2 files changed, 2 insertions(+), 3 deletions(-) > > diff --git a/tools/perf/arch/arm/util/pmu.c b/tools/perf/arch/arm/util/pmu.c > index d55d2b15f2e6..f25f68f84a94 100644 > --- a/tools/perf/arch/arm/util/pmu.c > +++ b/tools/perf/arch/arm/util/pmu.c > @@ -23,6 +23,8 @@ void perf_pmu__arch_init(struct perf_pmu *pmu __maybe_unused) > pmu->default_config = cs_etm_get_default_config(pmu); > #if defined(__aarch64__) > } else if (strstarts(pmu->name, ARM_SPE_PMU_NAME)) { > + pmu->selectable = true; > + pmu->is_uncore = false;
Arm SPE is not an uncore PMU event. Arm SPE driver registers sysfs node 'cpumask', thus it misleads the pmu_is_uncore() function and it returns 'true' for Arm SPE event.
Here we need to explictly set false to correct the 'is_uncore' flag.
I did test on my machine, the changes work well for Arm SPE event.
Tested-by: Leo Yan <leo.yan@linaro.org>
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