Re: [PATCH v3 4/4] tools/perf: Allow inherit + inherit_stat + PERF_SAMPLE_READ when opening events

[Ben Gainey <Ben.Gainey@arm.com>]

On Fri, 2024-03-22 at 13:04 +0000, Ben Gainey wrote:
> This change updates evsel to allow the combination of inherit
> and PERF_SAMPLE_READ.
>
> A fallback is implemented for kernel versions where this feature is
> not
> supported.
>
> The user must pass --stat option to perf record to opt into this new
> behaviour.
>
> Signed-off-by: Ben Gainey <ben.gainey@arm.com>
> ---
>  tools/perf/tests/attr/base-record             |  2 +-
>  tools/perf/tests/attr/base-stat               |  2 +-
>  tools/perf/tests/attr/system-wide-dummy       |  2 +-
>  tools/perf/tests/attr/test-record-dummy-C0    |  2 +-
>  .../test-record-group-sampling-inherit-stat   | 62 ++++++++++++++
>  tools/perf/util/evsel.c                       | 82
> ++++++++++++++++++-
>  tools/perf/util/evsel.h                       |  1 +
>  7 files changed, 147 insertions(+), 6 deletions(-)
>  create mode 100644 tools/perf/tests/attr/test-record-group-sampling-
> inherit-stat
>
> diff --git a/tools/perf/tests/attr/base-record
> b/tools/perf/tests/attr/base-record
> index b44e4e6e4443..dd76fbdb628f 100644
> --- a/tools/perf/tests/attr/base-record
> +++ b/tools/perf/tests/attr/base-record
> @@ -5,7 +5,7 @@ group_fd=-1
>  flags=0|8
>  cpu=*
>  type=0|1
> -size=136
> +size=144

Sigh... this one belongs elsewhere. Too many spinning plates.

I'll have to redo this one with the correct size= value.

Regards
Ben
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