libperf evsel: Factor perf_evsel__exit out of perf_evsel__delete

This allows the perf_evsel__exit to be called when the struct
perf_evsel is embedded inside another struct, such as struct evsel in
perf.

Reviewed-by: Thomas Falcon <thomas.falcon@intel.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: James Clark <james.clark@linaro.org>
Link: https://lore.kernel.org/r/20250719030517.1990983-8-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

Author: captain5050

tools/lib/perf/evsel.c

@@ -40,14 +40,19 @@ struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr)
 	return evsel;
 }
 
-void perf_evsel__delete(struct perf_evsel *evsel)
+void perf_evsel__exit(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->pmu_cpus);
 	perf_thread_map__put(evsel->threads);
+}
+
+void perf_evsel__delete(struct perf_evsel *evsel)
+{
+	perf_evsel__exit(evsel);
 	free(evsel);
 }
 

tools/lib/perf/include/internal/evsel.h

@@ -133,6 +133,7 @@ struct perf_evsel {
 
 void perf_evsel__init(struct perf_evsel *evsel, struct perf_event_attr *attr,
 		      int idx);
+void perf_evsel__exit(struct perf_evsel *evsel);
 int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
 void perf_evsel__close_fd(struct perf_evsel *evsel);
 void perf_evsel__free_fd(struct perf_evsel *evsel);