libperf: Add perf_thread_map__nr/perf_thread_map__pid functions

So it's part of libperf library as basic functions operating on
perf_thread_map objects.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@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/20190822111141.25823-6-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-ftrace.c

@@ -158,7 +158,7 @@ static int set_tracing_pid(struct perf_ftrace *ftrace)
 	if (target__has_cpu(&ftrace->target))
 		return 0;
 
-	for (i = 0; i < thread_map__nr(ftrace->evlist->core.threads); i++) {
+	for (i = 0; i < perf_thread_map__nr(ftrace->evlist->core.threads); i++) {
 		scnprintf(buf, sizeof(buf), "%d",
 			  ftrace->evlist->core.threads->map[i]);
 		if (append_tracing_file("set_ftrace_pid", buf) < 0)

tools/perf/builtin-script.c

@@ -1906,7 +1906,7 @@ static struct scripting_ops	*scripting_ops;
 
 static void __process_stat(struct evsel *counter, u64 tstamp)
 {
-	int nthreads = thread_map__nr(counter->core.threads);
+	int nthreads = perf_thread_map__nr(counter->core.threads);
 	int ncpus = perf_evsel__nr_cpus(counter);
 	int cpu, thread;
 	static int header_printed;
@@ -1928,7 +1928,7 @@ static void __process_stat(struct evsel *counter, u64 tstamp)
 
 			printf("%3d %8d %15" PRIu64 " %15" PRIu64 " %15" PRIu64 " %15" PRIu64 " %s\n",
 				counter->core.cpus->map[cpu],
-				thread_map__pid(counter->core.threads, thread),
+				perf_thread_map__pid(counter->core.threads, thread),
 				counts->val,
 				counts->ena,
 				counts->run,

tools/perf/builtin-stat.c

@@ -264,7 +264,7 @@ static int read_single_counter(struct evsel *counter, int cpu,
  */
 static int read_counter(struct evsel *counter, struct timespec *rs)
 {
-	int nthreads = thread_map__nr(evsel_list->core.threads);
+	int nthreads = perf_thread_map__nr(evsel_list->core.threads);
 	int ncpus, cpu, thread;
 
 	if (target__has_cpu(&target) && !target__has_per_thread(&target))
@@ -1893,7 +1893,7 @@ int cmd_stat(int argc, const char **argv)
 		thread_map__read_comms(evsel_list->core.threads);
 		if (target.system_wide) {
 			if (runtime_stat_new(&stat_config,
-				thread_map__nr(evsel_list->core.threads))) {
+				perf_thread_map__nr(evsel_list->core.threads))) {
 				goto out;
 			}
 		}

tools/perf/builtin-trace.c

@@ -3188,7 +3188,7 @@ static int trace__set_filter_pids(struct trace *trace)
 			err = bpf_map__set_filter_pids(trace->filter_pids.map, trace->filter_pids.nr,
 						       trace->filter_pids.entries);
 		}
-	} else if (thread_map__pid(trace->evlist->core.threads, 0) == -1) {
+	} else if (perf_thread_map__pid(trace->evlist->core.threads, 0) == -1) {
 		err = trace__set_filter_loop_pids(trace);
 	}
 
@@ -3417,7 +3417,7 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
 		evlist__enable(evlist);
 	}
 
-	trace->multiple_threads = thread_map__pid(evlist->core.threads, 0) == -1 ||
+	trace->multiple_threads = perf_thread_map__pid(evlist->core.threads, 0) == -1 ||
 				  evlist->core.threads->nr > 1 ||
 				  perf_evlist__first(evlist)->core.attr.inherit;
 

tools/perf/lib/include/perf/threadmap.h

@@ -11,6 +11,8 @@ LIBPERF_API struct perf_thread_map *perf_thread_map__new_dummy(void);
 
 LIBPERF_API void perf_thread_map__set_pid(struct perf_thread_map *map, int thread, pid_t pid);
 LIBPERF_API char *perf_thread_map__comm(struct perf_thread_map *map, int thread);
+LIBPERF_API int perf_thread_map__nr(struct perf_thread_map *threads);
+LIBPERF_API pid_t perf_thread_map__pid(struct perf_thread_map *map, int thread);
 
 LIBPERF_API struct perf_thread_map *perf_thread_map__get(struct perf_thread_map *map);
 LIBPERF_API void perf_thread_map__put(struct perf_thread_map *map);

tools/perf/lib/libperf.map

@@ -12,6 +12,8 @@ LIBPERF_0.0.1 {
 		perf_thread_map__new_dummy;
 		perf_thread_map__set_pid;
 		perf_thread_map__comm;
+		perf_thread_map__nr;
+		perf_thread_map__pid;
 		perf_thread_map__get;
 		perf_thread_map__put;
 		perf_evsel__new;

tools/perf/lib/threadmap.c

@@ -79,3 +79,13 @@ void perf_thread_map__put(struct perf_thread_map *map)
 	if (map && refcount_dec_and_test(&map->refcnt))
 		perf_thread_map__delete(map);
 }
+
+int perf_thread_map__nr(struct perf_thread_map *threads)
+{
+	return threads ? threads->nr : 1;
+}
+
+pid_t perf_thread_map__pid(struct perf_thread_map *map, int thread)
+{
+	return map->map[thread].pid;
+}

tools/perf/tests/thread-map.c

@@ -26,7 +26,7 @@ int test__thread_map(struct test *test __maybe_unused, int subtest __maybe_unuse
 
 	TEST_ASSERT_VAL("wrong nr", map->nr == 1);
 	TEST_ASSERT_VAL("wrong pid",
-			thread_map__pid(map, 0) == getpid());
+			perf_thread_map__pid(map, 0) == getpid());
 	TEST_ASSERT_VAL("wrong comm",
 			perf_thread_map__comm(map, 0) &&
 			!strcmp(perf_thread_map__comm(map, 0), NAME));
@@ -41,7 +41,7 @@ int test__thread_map(struct test *test __maybe_unused, int subtest __maybe_unuse
 	thread_map__read_comms(map);
 
 	TEST_ASSERT_VAL("wrong nr", map->nr == 1);
-	TEST_ASSERT_VAL("wrong pid", thread_map__pid(map, 0) == -1);
+	TEST_ASSERT_VAL("wrong pid", perf_thread_map__pid(map, 0) == -1);
 	TEST_ASSERT_VAL("wrong comm",
 			perf_thread_map__comm(map, 0) &&
 			!strcmp(perf_thread_map__comm(map, 0), "dummy"));
@@ -68,7 +68,7 @@ static int process_event(struct perf_tool *tool __maybe_unused,
 
 	TEST_ASSERT_VAL("wrong nr", threads->nr == 1);
 	TEST_ASSERT_VAL("wrong pid",
-			thread_map__pid(threads, 0) == getpid());
+			perf_thread_map__pid(threads, 0) == getpid());
 	TEST_ASSERT_VAL("wrong comm",
 			perf_thread_map__comm(threads, 0) &&
 			!strcmp(perf_thread_map__comm(threads, 0), NAME));

tools/perf/util/auxtrace.c

@@ -132,12 +132,12 @@ void auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp,
 	if (per_cpu) {
 		mp->cpu = evlist->core.cpus->map[idx];
 		if (evlist->core.threads)
-			mp->tid = thread_map__pid(evlist->core.threads, 0);
+			mp->tid = perf_thread_map__pid(evlist->core.threads, 0);
 		else
 			mp->tid = -1;
 	} else {
 		mp->cpu = -1;
-		mp->tid = thread_map__pid(evlist->core.threads, idx);
+		mp->tid = perf_thread_map__pid(evlist->core.threads, idx);
 	}
 }
 

tools/perf/util/event.c

@@ -647,7 +647,7 @@ int perf_event__synthesize_thread_map(struct perf_tool *tool,
 	for (thread = 0; thread < threads->nr; ++thread) {
 		if (__event__synthesize_thread(comm_event, mmap_event,
 					       fork_event, namespaces_event,
-					       thread_map__pid(threads, thread), 0,
+					       perf_thread_map__pid(threads, thread), 0,
 					       process, tool, machine,
 					       mmap_data)) {
 			err = -1;
@@ -658,12 +658,12 @@ int perf_event__synthesize_thread_map(struct perf_tool *tool,
 		 * comm.pid is set to thread group id by
 		 * perf_event__synthesize_comm
 		 */
-		if ((int) comm_event->comm.pid != thread_map__pid(threads, thread)) {
+		if ((int) comm_event->comm.pid != perf_thread_map__pid(threads, thread)) {
 			bool need_leader = true;
 
 			/* is thread group leader in thread_map? */
 			for (j = 0; j < threads->nr; ++j) {
-				if ((int) comm_event->comm.pid == thread_map__pid(threads, j)) {
+				if ((int) comm_event->comm.pid == perf_thread_map__pid(threads, j)) {
 					need_leader = false;
 					break;
 				}
@@ -997,7 +997,7 @@ int perf_event__synthesize_thread_map2(struct perf_tool *tool,
 		if (!comm)
 			comm = (char *) "";
 
-		entry->pid = thread_map__pid(threads, i);
+		entry->pid = perf_thread_map__pid(threads, i);
 		strncpy((char *) &entry->comm, comm, sizeof(entry->comm));
 	}
 

tools/perf/util/evlist.c

@@ -316,7 +316,7 @@ static int perf_evlist__nr_threads(struct evlist *evlist,
 	if (evsel->system_wide)
 		return 1;
 	else
-		return thread_map__nr(evlist->core.threads);
+		return perf_thread_map__nr(evlist->core.threads);
 }
 
 void evlist__disable(struct evlist *evlist)
@@ -399,7 +399,7 @@ int perf_evlist__enable_event_idx(struct evlist *evlist,
 int perf_evlist__alloc_pollfd(struct evlist *evlist)
 {
 	int nr_cpus = perf_cpu_map__nr(evlist->core.cpus);
-	int nr_threads = thread_map__nr(evlist->core.threads);
+	int nr_threads = perf_thread_map__nr(evlist->core.threads);
 	int nfds = 0;
 	struct evsel *evsel;
 
@@ -531,7 +531,7 @@ static void perf_evlist__set_sid_idx(struct evlist *evlist,
 	else
 		sid->cpu = -1;
 	if (!evsel->system_wide && evlist->core.threads && thread >= 0)
-		sid->tid = thread_map__pid(evlist->core.threads, thread);
+		sid->tid = perf_thread_map__pid(evlist->core.threads, thread);
 	else
 		sid->tid = -1;
 }
@@ -696,7 +696,7 @@ static struct perf_mmap *perf_evlist__alloc_mmap(struct evlist *evlist,
 
 	evlist->nr_mmaps = perf_cpu_map__nr(evlist->core.cpus);
 	if (perf_cpu_map__empty(evlist->core.cpus))
-		evlist->nr_mmaps = thread_map__nr(evlist->core.threads);
+		evlist->nr_mmaps = perf_thread_map__nr(evlist->core.threads);
 	map = zalloc(evlist->nr_mmaps * sizeof(struct perf_mmap));
 	if (!map)
 		return NULL;
@@ -810,7 +810,7 @@ static int perf_evlist__mmap_per_cpu(struct evlist *evlist,
 {
 	int cpu, thread;
 	int nr_cpus = perf_cpu_map__nr(evlist->core.cpus);
-	int nr_threads = thread_map__nr(evlist->core.threads);
+	int nr_threads = perf_thread_map__nr(evlist->core.threads);
 
 	pr_debug2("perf event ring buffer mmapped per cpu\n");
 	for (cpu = 0; cpu < nr_cpus; cpu++) {
@@ -838,7 +838,7 @@ static int perf_evlist__mmap_per_thread(struct evlist *evlist,
 					struct mmap_params *mp)
 {
 	int thread;
-	int nr_threads = thread_map__nr(evlist->core.threads);
+	int nr_threads = perf_thread_map__nr(evlist->core.threads);
 
 	pr_debug2("perf event ring buffer mmapped per thread\n");
 	for (thread = 0; thread < nr_threads; thread++) {

tools/perf/util/evsel.c

@@ -1653,7 +1653,7 @@ static bool ignore_missing_thread(struct evsel *evsel,
 				  struct perf_thread_map *threads,
 				  int thread, int err)
 {
-	pid_t ignore_pid = thread_map__pid(threads, thread);
+	pid_t ignore_pid = perf_thread_map__pid(threads, thread);
 
 	if (!evsel->ignore_missing_thread)
 		return false;
@@ -1816,7 +1816,7 @@ int evsel__open(struct evsel *evsel, struct perf_cpu_map *cpus,
 			int fd, group_fd;
 
 			if (!evsel->cgrp && !evsel->system_wide)
-				pid = thread_map__pid(threads, thread);
+				pid = perf_thread_map__pid(threads, thread);
 
 			group_fd = get_group_fd(evsel, cpu, thread);
 retry_open:

tools/perf/util/scripting-engines/trace-event-python.c

@@ -1406,7 +1406,7 @@ static void python_process_stat(struct perf_stat_config *config,
 	for (thread = 0; thread < threads->nr; thread++) {
 		for (cpu = 0; cpu < cpus->nr; cpu++) {
 			process_stat(counter, cpus->map[cpu],
-				     thread_map__pid(threads, thread), tstamp,
+				     perf_thread_map__pid(threads, thread), tstamp,
 				     perf_counts(counter->counts, cpu, thread));
 		}
 	}

tools/perf/util/stat-display.c

@@ -119,7 +119,7 @@ static void aggr_printout(struct perf_stat_config *config,
 			config->csv_output ? 0 : 16,
 			perf_thread_map__comm(evsel->core.threads, id),
 			config->csv_output ? 0 : -8,
-			thread_map__pid(evsel->core.threads, id),
+			perf_thread_map__pid(evsel->core.threads, id),
 			config->csv_sep);
 		break;
 	case AGGR_GLOBAL:
@@ -745,7 +745,7 @@ static void print_aggr_thread(struct perf_stat_config *config,
 			      struct evsel *counter, char *prefix)
 {
 	FILE *output = config->output;
-	int nthreads = thread_map__nr(counter->core.threads);
+	int nthreads = perf_thread_map__nr(counter->core.threads);
 	int ncpus = perf_cpu_map__nr(counter->core.cpus);
 	int thread, sorted_threads, id;
 	struct perf_aggr_thread_value *buf;

tools/perf/util/stat.c

@@ -159,7 +159,7 @@ static void perf_evsel__free_prev_raw_counts(struct evsel *evsel)
 static int perf_evsel__alloc_stats(struct evsel *evsel, bool alloc_raw)
 {
 	int ncpus = perf_evsel__nr_cpus(evsel);
-	int nthreads = thread_map__nr(evsel->core.threads);
+	int nthreads = perf_thread_map__nr(evsel->core.threads);
 
 	if (perf_evsel__alloc_stat_priv(evsel) < 0 ||
 	    perf_evsel__alloc_counts(evsel, ncpus, nthreads) < 0 ||
@@ -309,7 +309,7 @@ process_counter_values(struct perf_stat_config *config, struct evsel *evsel,
 static int process_counter_maps(struct perf_stat_config *config,
 				struct evsel *counter)
 {
-	int nthreads = thread_map__nr(counter->core.threads);
+	int nthreads = perf_thread_map__nr(counter->core.threads);
 	int ncpus = perf_evsel__nr_cpus(counter);
 	int cpu, thread;
 

tools/perf/util/thread_map.c

@@ -310,7 +310,7 @@ size_t thread_map__fprintf(struct perf_thread_map *threads, FILE *fp)
 	size_t printed = fprintf(fp, "%d thread%s: ",
 				 threads->nr, threads->nr > 1 ? "s" : "");
 	for (i = 0; i < threads->nr; ++i)
-		printed += fprintf(fp, "%s%d", i ? ", " : "", thread_map__pid(threads, i));
+		printed += fprintf(fp, "%s%d", i ? ", " : "", perf_thread_map__pid(threads, i));
 
 	return printed + fprintf(fp, "\n");
 }
@@ -341,7 +341,7 @@ static int get_comm(char **comm, pid_t pid)
 
 static void comm_init(struct perf_thread_map *map, int i)
 {
-	pid_t pid = thread_map__pid(map, i);
+	pid_t pid = perf_thread_map__pid(map, i);
 	char *comm = NULL;
 
 	/* dummy pid comm initialization */

tools/perf/util/thread_map.h

@@ -25,16 +25,6 @@ struct perf_thread_map *thread_map__new_by_tid_str(const char *tid_str);
 
 size_t thread_map__fprintf(struct perf_thread_map *threads, FILE *fp);
 
-static inline int thread_map__nr(struct perf_thread_map *threads)
-{
-	return threads ? threads->nr : 1;
-}
-
-static inline pid_t thread_map__pid(struct perf_thread_map *map, int thread)
-{
-	return map->map[thread].pid;
-}
-
 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);