[PATCH v3 06/10] perf: Add perf_event_attr::config4

[Ian Rogers]

On Thu, Jun 5, 2025 at 3:50 AM James Clark <james.clark at linaro.org> wrote:
>
> Arm FEAT_SPE_FDS adds the ability to filter on the data source of a
> packet using 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 'config4' field.
>
> Reviewed-by: Leo Yan <leo.yan at arm.com>
> Tested-by: Leo Yan <leo.yan at arm.com>
> Signed-off-by: James Clark <james.clark at linaro.org>

Reviewed-by: Ian Rogers <irogers at google.com>

Thanks,
Ian

> ---
>  include/uapi/linux/perf_event.h | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
> index 78a362b80027..0d0ed85ad8cb 100644
> --- a/include/uapi/linux/perf_event.h
> +++ b/include/uapi/linux/perf_event.h
> @@ -382,6 +382,7 @@ enum perf_event_read_format {
>  #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 */
> +#define PERF_ATTR_SIZE_VER9                    144     /* add: config4 */
>
>  /*
>   * 'struct perf_event_attr' contains various attributes that define
> @@ -543,6 +544,7 @@ struct perf_event_attr {
>         __u64   sig_data;
>
>         __u64   config3; /* extension of config2 */
> +       __u64   config4; /* extension of config3 */
>  };
>
>  /*
>
> --
> 2.34.1
>