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(parent: d91680e) | patch
arm64: perf: Reject stand-alone CHAIN events for PMUv3
authorWill Deacon <will.deacon@arm.com>
Fri, 5 Oct 2018 12:24:36 +0000 (13:24 +0100)
committerWill Deacon <will.deacon@arm.com>
Fri, 12 Oct 2018 14:25:17 +0000 (15:25 +0100)
commitca2b497253ad01c80061a1f3ee9eb91b5d54a849
tree06b96eee97a7f40173136b35f8b3ff945ae5925ftree | snapshot
parentd91680e687f47984ffd3200c8e5d587903e7bd11commit | diff
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>
arch/arm64/kernel/perf_event.c diff | blob | history
drivers/perf/arm_pmu.c diff | blob | history
include/linux/perf/arm_pmu.h diff | blob | history
Domain: System / Kernel;