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| author | Will Deacon <will.deacon@arm.com> | 2018-10-05 13:24:36 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-10-12 15:25:17 +0100 |
| commit | ca2b497253ad01c80061a1f3ee9eb91b5d54a849 (patch) | |
| tree | 06b96eee97a7f40173136b35f8b3ff945ae5925f /include | |
| parent | d91680e687f47984ffd3200c8e5d587903e7bd11 (diff) | |
| download | lwn-ca2b497253ad01c80061a1f3ee9eb91b5d54a849.tar.gz lwn-ca2b497253ad01c80061a1f3ee9eb91b5d54a849.zip | |
arm64: perf: Reject stand-alone CHAIN events for PMUv3
It doesn't make sense for a perf event to be configured as a CHAIN event
in isolation, so extend the arm_pmu structure with a ->filter_match()
function to allow the backend PMU implementation to reject CHAIN events
early.
Cc: <stable@vger.kernel.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/perf/arm_pmu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h index 10f92e1d8e7b..bf309ff6f244 100644 --- a/include/linux/perf/arm_pmu.h +++ b/include/linux/perf/arm_pmu.h @@ -99,6 +99,7 @@ struct arm_pmu { void (*stop)(struct arm_pmu *); void (*reset)(void *); int (*map_event)(struct perf_event *event); + int (*filter_match)(struct perf_event *event); int num_events; bool secure_access; /* 32-bit ARM only */ #define ARMV8_PMUV3_MAX_COMMON_EVENTS 0x40 |