Re: [PATCH 0/2] arm64: perf: Expose Cortex-A53 micro architectural events

Robin Murphy
2019-04-05T09:36:55Z

Hi Florian,

On 05/04/2019 00:25, Florian Fainelli wrote:
> Hi all,
>
> This patch series adds support for the Cortex-A53 micro architectural
> events that I recently had to use for some debugging exercise.
>
> Events from 0xC0 - 0xD2 are exposed, others could easily be added later
> if we wanted to.

As far as I'm aware (which admittedly is not all-the-way far) these
events should already be understood by userspace, per
tools/perf/pmu-events/arch/arm64/arm/cortex-a53/* - is there a specific
reason to need in-kernel definitions?

Robin.

>
> Thanks!
>
> Florian Fainelli (2):
> arm64: perf: Group common ARMv8 v3 PMU events in a macro
> arm64: perf: Expose Cortex-A53 micro architectural events
>
> arch/arm64/kernel/perf_event.c | 241 ++++++++++++++++++++++++---------
> 1 file changed, 179 insertions(+), 62 deletions(-)