On Tue, Oct 13, 2015 at 08:36:45AM -0700, Drew Richardson wrote:
> Add additional information about the ARM architected hardware events
> to make counters self describing. This makes the hardware PMUs easier
> to use as perf list contains possible events instead of users having
> to refer to documentation like the ARM TRMs.
> 
> Signed-off-by: Drew Richardson <drew.richard...@arm.com>
> ---
>  arch/arm/kernel/perf_event_v7.c | 121 
> ++++++++++++++++++++++++++++++++++++++++
>  drivers/perf/arm_pmu.c          |   1 +
>  2 files changed, 122 insertions(+)

[...]

> diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c
> index 2365a32a595e..e933d2dd71c0 100644
> --- a/drivers/perf/arm_pmu.c
> +++ b/drivers/perf/arm_pmu.c
> @@ -548,6 +548,7 @@ static void armpmu_init(struct arm_pmu *armpmu)
>               .stop           = armpmu_stop,
>               .read           = armpmu_read,
>               .filter_match   = armpmu_filter_match,
> +             .attr_groups    = armpmu->pmu.attr_groups,

I don't understand this hunk. What's it doing?

Will
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