libperf: Add perf_thread_map__get()/perf_thread_map__put()

Move the following functions:

  thread_map__get()
  thread_map__put()
  thread_map__comm()

to libperf with the following names:

  perf_thread_map__get()
  perf_thread_map__put()
  perf_thread_map__comm()

Add the perf_thread_map__comm() function for it to work/compile.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190721112506.12306-34-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/event.c

@@ -992,7 +992,7 @@ int perf_event__synthesize_thread_map2(struct perf_tool *tool,
 
 	for (i = 0; i < threads->nr; i++) {
 		struct thread_map_event_entry *entry = &event->thread_map.entries[i];
-		char *comm = thread_map__comm(threads, i);
+		char *comm = perf_thread_map__comm(threads, i);
 
 		if (!comm)
 			comm = (char *) "";
@@ -1387,7 +1387,7 @@ size_t perf_event__fprintf_thread_map(union perf_event *event, FILE *fp)
 	else
 		ret += fprintf(fp, "failed to get threads from event\n");
 
-	thread_map__put(threads);
+	perf_thread_map__put(threads);
 	return ret;
 }
 

tools/perf/util/evlist.c

@@ -142,7 +142,7 @@ void evlist__delete(struct evlist *evlist)
 	perf_evlist__munmap(evlist);
 	evlist__close(evlist);
 	perf_cpu_map__put(evlist->cpus);
-	thread_map__put(evlist->threads);
+	perf_thread_map__put(evlist->threads);
 	evlist->cpus = NULL;
 	evlist->threads = NULL;
 	perf_evlist__purge(evlist);
@@ -165,8 +165,8 @@ static void __perf_evlist__propagate_maps(struct evlist *evlist,
 		evsel->cpus = perf_cpu_map__get(evsel->own_cpus);
 	}
 
-	thread_map__put(evsel->threads);
-	evsel->threads = thread_map__get(evlist->threads);
+	perf_thread_map__put(evsel->threads);
+	evsel->threads = perf_thread_map__get(evlist->threads);
 }
 
 static void perf_evlist__propagate_maps(struct evlist *evlist)
@@ -1100,7 +1100,7 @@ int perf_evlist__create_maps(struct evlist *evlist, struct target *target)
 	return 0;
 
 out_delete_threads:
-	thread_map__put(threads);
+	perf_thread_map__put(threads);
 	return -1;
 }
 
@@ -1120,8 +1120,8 @@ void perf_evlist__set_maps(struct evlist *evlist, struct perf_cpu_map *cpus,
 	}
 
 	if (threads != evlist->threads) {
-		thread_map__put(evlist->threads);
-		evlist->threads = thread_map__get(threads);
+		perf_thread_map__put(evlist->threads);
+		evlist->threads = perf_thread_map__get(threads);
 	}
 
 	perf_evlist__propagate_maps(evlist);

tools/perf/util/evsel.c

@@ -1327,7 +1327,7 @@ void perf_evsel__exit(struct evsel *evsel)
 	cgroup__put(evsel->cgrp);
 	perf_cpu_map__put(evsel->cpus);
 	perf_cpu_map__put(evsel->own_cpus);
-	thread_map__put(evsel->threads);
+	perf_thread_map__put(evsel->threads);
 	zfree(&evsel->group_name);
 	zfree(&evsel->name);
 	perf_evsel__object.fini(evsel);

tools/perf/util/parse-events.c

@@ -2337,7 +2337,7 @@ static bool is_event_supported(u8 type, unsigned config)
 		evsel__delete(evsel);
 	}
 
-	thread_map__put(tmap);
+	perf_thread_map__put(tmap);
 	return ret;
 }
 

tools/perf/util/python.c

@@ -626,7 +626,7 @@ static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
 
 static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
 {
-	thread_map__put(pthreads->threads);
+	perf_thread_map__put(pthreads->threads);
 	Py_TYPE(pthreads)->tp_free((PyObject*)pthreads);
 }
 

tools/perf/util/stat-display.c

@@ -116,7 +116,7 @@ static void aggr_printout(struct perf_stat_config *config,
 	case AGGR_THREAD:
 		fprintf(config->output, "%*s-%*d%s",
 			config->csv_output ? 0 : 16,
-			thread_map__comm(evsel->threads, id),
+			perf_thread_map__comm(evsel->threads, id),
 			config->csv_output ? 0 : -8,
 			thread_map__pid(evsel->threads, id),
 			config->csv_sep);

tools/perf/util/thread_map.c

@@ -304,32 +304,6 @@ struct perf_thread_map *thread_map__new_str(const char *pid, const char *tid,
 	return thread_map__new_by_tid_str(tid);
 }
 
-static void thread_map__delete(struct perf_thread_map *threads)
-{
-	if (threads) {
-		int i;
-
-		WARN_ONCE(refcount_read(&threads->refcnt) != 0,
-			  "thread map refcnt unbalanced\n");
-		for (i = 0; i < threads->nr; i++)
-			free(thread_map__comm(threads, i));
-		free(threads);
-	}
-}
-
-struct perf_thread_map *thread_map__get(struct perf_thread_map *map)
-{
-	if (map)
-		refcount_inc(&map->refcnt);
-	return map;
-}
-
-void thread_map__put(struct perf_thread_map *map)
-{
-	if (map && refcount_dec_and_test(&map->refcnt))
-		thread_map__delete(map);
-}
-
 size_t thread_map__fprintf(struct perf_thread_map *threads, FILE *fp)
 {
 	int i;

tools/perf/util/thread_map.h

@@ -18,9 +18,6 @@ struct perf_thread_map *thread_map__new_all_cpus(void);
 struct perf_thread_map *thread_map__new(pid_t pid, pid_t tid, uid_t uid);
 struct perf_thread_map *thread_map__new_event(struct thread_map_event *event);
 
-struct perf_thread_map *thread_map__get(struct perf_thread_map *map);
-void thread_map__put(struct perf_thread_map *map);
-
 struct perf_thread_map *thread_map__new_str(const char *pid,
 		const char *tid, uid_t uid, bool all_threads);
 
@@ -38,11 +35,6 @@ static inline pid_t thread_map__pid(struct perf_thread_map *map, int thread)
 	return map->map[thread].pid;
 }
 
-static inline char *thread_map__comm(struct perf_thread_map *map, int thread)
-{
-	return map->map[thread].comm;
-}
-
 void thread_map__read_comms(struct perf_thread_map *threads);
 bool thread_map__has(struct perf_thread_map *threads, pid_t pid);
 int thread_map__remove(struct perf_thread_map *threads, int idx);