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perf: arm_cspmu: Reject events meant for other PMUs

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Coresight PMU driver didn't reject events meant for other PMUs.
This caused some of the Core PMU events disappearing from
the output of "perf list". In addition, trying to run e.g.

     $ perf stat -e r2 sleep 1

made Coresight PMU driver to handle the event instead of letting
Core PMU driver to deal with it.

Cc: stable@vger.kernel.org
Fixes: e37dfd6573 ("perf: arm_cspmu: Add support for ARM CoreSight PMU driver")
Signed-off-by: Ilkka Koskinen <ilkka@os.amperecomputing.com>
Acked-by: Will Deacon <will@kernel.org>
Reviewed-by: Besar Wicaksono <bwicaksono@nvidia.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20231103001654.35565-1-ilkka@os.amperecomputing.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Ilkka Koskinen 2023-11-02 17:16:54 -07:00 committed by Catalin Marinas
parent 6eeeb4c7e4
commit 15c7ef7341
1 changed files with 3 additions and 0 deletions
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3
drivers/perf/arm_cspmu/arm_cspmu.c
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@ -676,6 +676,9 @@ static int arm_cspmu_event_init(struct perf_event *event)
cspmu = to_arm_cspmu(event->pmu);
if (event->attr.type != event->pmu->type)
return -ENOENT;
/*
* Following other "uncore" PMUs, we do not support sampling mode or
* attach to a task (per-process mode).