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| author | Namhyung Kim <namhyung@kernel.org> | 2025-07-02 18:49:39 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-15 12:08:53 +0200 |
| commit | 282d4b34694f83b00c45ab85f85bd5fbdabed491 (patch) | |
| tree | bc40941d5762da56ea5b3aed1ab09af4848f17ad /tools | |
| parent | 16ce5ce11145e42e89dbcf68a5c56466f163ffde (diff) | |
| download | linux-282d4b34694f83b00c45ab85f85bd5fbdabed491.tar.gz linux-282d4b34694f83b00c45ab85f85bd5fbdabed491.tar.bz2 linux-282d4b34694f83b00c45ab85f85bd5fbdabed491.zip | |
perf sched: Fix memory leaks for evsel->priv in timehist
[ Upstream commit 117e5c33b1c44037af016d77ce6c0b086d55535f ]
It uses evsel->priv to save per-cpu timing information. It should be
freed when the evsel is released.
Add the priv destructor for evsel same as thread to handle that.
Fixes: 49394a2a24c78ce0 ("perf sched timehist: Introduce timehist command")
Reviewed-by: Ian Rogers <irogers@google.com>
Tested-by: Ian Rogers <irogers@google.com>
Link: https://lore.kernel.org/r/20250703014942.1369397-6-namhyung@kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/builtin-sched.c | 12 | ||||
| -rw-r--r-- | tools/perf/util/evsel.c | 11 | ||||
| -rw-r--r-- | tools/perf/util/evsel.h | 2 |
3 files changed, 25 insertions, 0 deletions
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index 5f4fb1ce1ea9..a1fab1a52b6a 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -1949,6 +1949,16 @@ static u64 evsel__get_time(struct evsel *evsel, u32 cpu) return r->last_time[cpu]; } +static void timehist__evsel_priv_destructor(void *priv) +{ + struct evsel_runtime *r = priv; + + if (r) { + free(r->last_time); + free(r); + } +} + static int comm_width = 30; static char *timehist_get_commstr(struct thread *thread) @@ -3080,6 +3090,8 @@ static int perf_sched__timehist(struct perf_sched *sched) setup_pager(); + evsel__set_priv_destructor(timehist__evsel_priv_destructor); + /* prefer sched_waking if it is captured */ if (evlist__find_tracepoint_by_name(session->evlist, "sched:sched_waking")) handlers[1].handler = timehist_sched_wakeup_ignore; diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 6d2b056232f6..2a6295f1ac1b 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -1460,6 +1460,15 @@ static void evsel__free_config_terms(struct evsel *evsel) free_config_terms(&evsel->config_terms); } +static void (*evsel__priv_destructor)(void *priv); + +void evsel__set_priv_destructor(void (*destructor)(void *priv)) +{ + assert(evsel__priv_destructor == NULL); + + evsel__priv_destructor = destructor; +} + void evsel__exit(struct evsel *evsel) { assert(list_empty(&evsel->core.node)); @@ -1485,6 +1494,8 @@ void evsel__exit(struct evsel *evsel) hashmap__free(evsel->per_pkg_mask); evsel->per_pkg_mask = NULL; zfree(&evsel->metric_events); + if (evsel__priv_destructor) + evsel__priv_destructor(evsel->priv); perf_evsel__object.fini(evsel); } diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 848534ec74fa..ac396d6f95cb 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -252,6 +252,8 @@ void evsel__init(struct evsel *evsel, struct perf_event_attr *attr, int idx); void evsel__exit(struct evsel *evsel); void evsel__delete(struct evsel *evsel); +void evsel__set_priv_destructor(void (*destructor)(void *priv)); + struct callchain_param; void evsel__config(struct evsel *evsel, struct record_opts *opts, |