On Mon, Jan 09, 2023 at 01:26:23PM -0600, Rob Herring wrote:
> Arm SPEv1.2 adds another 64-bits of event filtering control. As the
> existing perf_event_attr::configN fields are all used up for SPE PMU, an
> additional field is needed. Add a new 'config3' field.
>
> Tested-by: James Clark <james.clark@arm.com>
> Signed-off-by: Rob Herring <robh@kernel.org>
> ---
> There's still an unresolved discussion about validating 'config3' with
> the options laid out here[1].
>
> v4:
> - Rebase on v6.2-rc1
> v3:
> - No change
> v2:
> - Drop tools/ side update
>
> [1] https://lore.kernel.org/all/Y49ttrv6W5k3ZNYw@FVFF77S0Q05N.cambridge.arm.com/
> ---
> include/uapi/linux/perf_event.h | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
> index ccb7f5dad59b..37675437b768 100644
> --- a/include/uapi/linux/perf_event.h
> +++ b/include/uapi/linux/perf_event.h
> @@ -374,6 +374,7 @@ enum perf_event_read_format {
> #define PERF_ATTR_SIZE_VER5 112 /* add: aux_watermark */
> #define PERF_ATTR_SIZE_VER6 120 /* add: aux_sample_size */
> #define PERF_ATTR_SIZE_VER7 128 /* add: sig_data */
> +#define PERF_ATTR_SIZE_VER8 136 /* add: config3 */
>
> /*
> * Hardware event_id to monitor via a performance monitoring event:
> @@ -515,6 +516,8 @@ struct perf_event_attr {
> * truncated accordingly on 32 bit architectures.
> */
> __u64 sig_data;
> +
> + __u64 config3; /* extension of config2 */
> };
Yeah, that was bound to happen I suppose..
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>