]> www.infradead.org Git - users/jedix/linux-maple.git/commit
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)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 18 Oct 2018 07:16:24 +0000 (09:16 +0200)
commit3e6275d940a4419083de25de38d0cc9585117d25
tree8fd26484c5bc5ea430f27489fa9c289a8c93ff71
parentb3e4b3c70a0a4028d481b8b1e84b06acdc80d1ec
arm64: perf: Reject stand-alone CHAIN events for PMUv3

commit ca2b497253ad01c80061a1f3ee9eb91b5d54a849 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/arm64/kernel/perf_event.c
drivers/perf/arm_pmu.c
include/linux/perf/arm_pmu.h