From: Ian Rogers <irogers@google.com>
To: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Namhyung Kim <namhyung@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@kernel.org>, Ian Rogers <irogers@google.com>,
Adrian Hunter <adrian.hunter@intel.com>,
Kan Liang <kan.liang@linux.intel.com>,
Michael Petlan <mpetlan@redhat.com>,
Andi Kleen <ak@linux.intel.com>,
Jiapeng Chong <jiapeng.chong@linux.alibaba.com>,
Tiezhu Yang <yangtiezhu@loongson.cn>,
linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v1 4/4] libperf evsel: In exit add missed puts and assert close, etc. were called
Date: Fri, 13 Jun 2025 17:41:07 -0700 [thread overview]
Message-ID: <20250614004108.1650988-4-irogers@google.com> (raw)
In-Reply-To: <20250614004108.1650988-1-irogers@google.com>
A missed evsel__close before evsel__delete was the source of leaking
perf events due to a hybrid test. Add asserts in debug builds so that
this shouldn't happen in the future. Add puts missing on the cpu map
and thread maps.
Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/lib/perf/evsel.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/tools/lib/perf/evsel.c b/tools/lib/perf/evsel.c
index c475319e2e41..2a85e0bfee1e 100644
--- a/tools/lib/perf/evsel.c
+++ b/tools/lib/perf/evsel.c
@@ -42,6 +42,12 @@ struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr)
void perf_evsel__delete(struct perf_evsel *evsel)
{
+ assert(evsel->fd == NULL); /* If not fds were not closed. */
+ assert(evsel->mmap == NULL); /* If not munmap wasn't called. */
+ assert(evsel->sample_id == NULL); /* If not free_id wasn't called. */
+ perf_cpu_map__put(evsel->cpus);
+ perf_cpu_map__put(evsel->own_cpus);
+ perf_thread_map__put(evsel->threads);
free(evsel);
}
--
2.50.0.rc1.591.g9c95f17f64-goog
prev parent reply other threads:[~2025-06-14 0:41 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-14 0:41 [PATCH v1 1/4] perf test: Directory file descriptor leak Ian Rogers
2025-06-14 0:41 ` [PATCH v1 2/4] perf evsel: Missed close when probing hybrid core PMUs Ian Rogers
2025-06-16 16:04 ` Ian Rogers
2025-06-16 16:24 ` Arnaldo Carvalho de Melo
2025-06-16 16:30 ` Ian Rogers
2025-06-14 0:41 ` [PATCH v1 3/4] perf trace: Add missed freeing of ordered events and thread Ian Rogers
2025-06-14 4:16 ` Howard Chu
2025-06-16 16:27 ` Arnaldo Carvalho de Melo
2025-06-17 21:30 ` Arnaldo Carvalho de Melo
2025-06-17 21:32 ` Ian Rogers
2025-06-17 21:49 ` Arnaldo Carvalho de Melo
2025-06-23 22:26 ` Ian Rogers
2025-06-14 0:41 ` Ian Rogers [this message]
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