tree 06b96eee97a7f40173136b35f8b3ff945ae5925f
parent d91680e687f47984ffd3200c8e5d587903e7bd11
author Will Deacon <will.deacon@arm.com> 1538742276 +0100
committer Will Deacon <will.deacon@arm.com> 1539354317 +0100

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>