[PATCH v5 10/23] perf session: Add an env pointer for the current perf_env
Namhyung Kim
namhyung at kernel.org
Mon Jun 30 23:27:12 PDT 2025
On Fri, Jun 27, 2025 at 09:50:04PM -0700, Ian Rogers wrote:
> Initialize to `&header.env`. This will later allow the env value to be
> changed.
I'm curious when it is changed.
Thanks,
Namhyung
>
> Signed-off-by: Ian Rogers <irogers at google.com>
> ---
> tools/perf/util/session.c | 3 ++-
> tools/perf/util/session.h | 2 ++
> 2 files changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
> index b09d157f7d04..e39a1df7c044 100644
> --- a/tools/perf/util/session.c
> +++ b/tools/perf/util/session.c
> @@ -156,6 +156,7 @@ struct perf_session *__perf_session__new(struct perf_data *data,
> ordered_events__deliver_event, NULL);
>
> perf_env__init(&session->header.env);
> + session->env = &session->header.env;
> if (data) {
> ret = perf_data__open(data);
> if (ret < 0)
> @@ -2750,5 +2751,5 @@ int perf_session__dsos_hit_all(struct perf_session *session)
>
> struct perf_env *perf_session__env(struct perf_session *session)
> {
> - return &session->header.env;
> + return session->env;
> }
> diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
> index e7f7464b838f..088868f1004a 100644
> --- a/tools/perf/util/session.h
> +++ b/tools/perf/util/session.h
> @@ -45,6 +45,8 @@ struct perf_session {
> struct perf_header header;
> /** @machines: Machines within the session a host and 0 or more guests. */
> struct machines machines;
> + /** @env: The perf_env being worked with, either from a data file or the host's. */
> + struct perf_env *env;
> /** @evlist: List of evsels/events of the session. */
> struct evlist *evlist;
> /** @auxtrace: callbacks to allow AUX area data decoding. */
> --
> 2.50.0.727.gbf7dc18ff4-goog
>
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