perf pmu: Make pmu_add_sys_aliases() public

Function pmu_add_sys_aliases() will be required for the PMU events test
for system events aliases, so make it public.

Signed-off-by: John Garry <john.garry@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linuxarm@huawei.com
Link: https //lore.kernel.org/r/1627566986-30605-10-git-send-email-john.garry@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/pmu.c

@@ -926,7 +926,7 @@ static int pmu_add_sys_aliases_iter_fn(struct pmu_event *pe, void *data)
 	return 0;
 }
 
-static void pmu_add_sys_aliases(struct list_head *head, struct perf_pmu *pmu)
+void pmu_add_sys_aliases(struct list_head *head, struct perf_pmu *pmu)
 {
 	struct pmu_sys_event_iter_data idata = {
 		.head = head,

tools/perf/util/pmu.h

@@ -81,6 +81,7 @@ struct perf_pmu_alias {
 
 struct perf_pmu *perf_pmu__find(const char *name);
 struct perf_pmu *perf_pmu__find_by_type(unsigned int type);
+void pmu_add_sys_aliases(struct list_head *head, struct perf_pmu *pmu);
 int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr,
 		     struct list_head *head_terms,
 		     struct parse_events_error *error);