Re: [PATCH v1 2/4] perf evsel: Missed close when probing hybrid core PMUs

[Ian Rogers <irogers@google.com>]

On Fri, Jun 13, 2025 at 5:41 PM Ian Rogers <irogers@google.com> wrote:
>
> Add missing close to avoid leaking perf events. In past perfs this
> mattered little as the function was just used by perf list. As the
> function is now used to detect hybrid PMUs leaking the perf event is
> somewhat more painful.

Given this leads to leaking perf events on hybrid systems it would be
nice to land this 1 liner in the next v6.15 rc pull request fixes if
possible.

Thanks,
Ian

> Fixes: b41f1cec91c3 ("perf list: Skip unsupported events")
> Signed-off-by: Ian Rogers <irogers@google.com>
> ---
>  tools/perf/util/print-events.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/tools/perf/util/print-events.c b/tools/perf/util/print-events.c
> index a786cbfb0ff5..83aaf7cda635 100644
> --- a/tools/perf/util/print-events.c
> +++ b/tools/perf/util/print-events.c
> @@ -268,6 +268,7 @@ bool is_event_supported(u8 type, u64 config)
>                         ret = evsel__open(evsel, NULL, tmap) >= 0;
>                 }
>
> +               evsel__close(evsel);
>                 evsel__delete(evsel);
>         }
>
> --
> 2.50.0.rc1.591.g9c95f17f64-goog
>