[PATCH v8] arm64: perf: Add support caps under sysfs

[Will Deacon]

On Tue, 22 Sep 2020 13:53:45 +0800, Shaokun Zhang wrote:
> ARMv8.4-PMU introduces the PMMIR_EL1 registers and some new PMU events,
> like STALL_SLOT etc, are related to it. Let's add a caps directory to
> /sys/bus/event_source/devices/armv8_pmuv3_0/ and support slots from
> PMMIR_EL1 registers in this entry. The user programs can get the slots
> from sysfs directly.
> 
> /sys/bus/event_source/devices/armv8_pmuv3_0/caps/slots is exposed
> under sysfs. Both ARMv8.4-PMU and STALL_SLOT event are implemented,
> it returns the slots from PMMIR_EL1, otherwise it will return 0.

Applied to will (for-next/perf), thanks!

[1/1] arm64: perf: Add support caps under sysfs
      https://git.kernel.org/will/c/f5be3a61fdb5

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev