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perf: arm_cspmu: Reject events meant for other PMUs

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commit 15c7ef7341 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ilkka Koskinen
2023-11-02 17:16:54 -07:00
committed by Greg Kroah-Hartman
parent 10f49cdfd5
commit 1fd3a0b84f
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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@@ -635,6 +635,9 @@ 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).