perf stat: Move 'metric_only' to 'struct perf_stat_config'

Move the static 'metric_only' variable to 'struct perf_stat_config', so
it can be passed around and used outside the 'perf stat' command.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180830063252.23729-23-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-stat.c

@@ -163,7 +163,6 @@ static const char		*post_cmd			= NULL;
 static bool			sync_run			= false;
 static unsigned int		unit_width			= 4; /* strlen("unit") */
 static bool			forever				= false;
-static bool			metric_only			= false;
 static bool			force_metric_only		= false;
 static bool			no_merge			= false;
 static bool			walltime_run_table		= false;
@@ -1013,7 +1012,7 @@ static void printout(struct perf_stat_config *config, int id, int nr,
 	print_metric_t pm = print_metric_std;
 	new_line_t nl;
 
-	if (metric_only) {
+	if (config->metric_only) {
 		nl = new_line_metric;
 		if (config->csv_output)
 			pm = print_metric_only_csv;
@@ -1022,7 +1021,7 @@ static void printout(struct perf_stat_config *config, int id, int nr,
 	} else
 		nl = new_line_std;
 
-	if (config->csv_output && !metric_only) {
+	if (config->csv_output && !config->metric_only) {
 		static int aggr_fields[] = {
 			[AGGR_GLOBAL] = 0,
 			[AGGR_THREAD] = 1,
@@ -1039,7 +1038,7 @@ static void printout(struct perf_stat_config *config, int id, int nr,
 			os.nfields++;
 	}
 	if (run == 0 || ena == 0 || counter->counts->scaled == -1) {
-		if (metric_only) {
+		if (config->metric_only) {
 			pm(config, &os, NULL, "", "", 0);
 			return;
 		}
@@ -1077,7 +1076,7 @@ static void printout(struct perf_stat_config *config, int id, int nr,
 		return;
 	}
 
-	if (!metric_only)
+	if (!config->metric_only)
 		abs_printout(config, id, nr, counter, uval);
 
 	out.print_metric = pm;
@@ -1085,7 +1084,7 @@ static void printout(struct perf_stat_config *config, int id, int nr,
 	out.ctx = &os;
 	out.force_header = false;
 
-	if (config->csv_output && !metric_only) {
+	if (config->csv_output && !config->metric_only) {
 		print_noise(config, counter, noise);
 		print_running(config, run, ena);
 	}
@@ -1093,7 +1092,7 @@ static void printout(struct perf_stat_config *config, int id, int nr,
 	perf_stat__print_shadow_stats(config, counter, uval,
 				first_shadow_cpu(counter, id),
 				&out, &metric_events, st);
-	if (!config->csv_output && !metric_only) {
+	if (!config->csv_output && !config->metric_only) {
 		print_noise(config, counter, noise);
 		print_running(config, run, ena);
 	}
@@ -1225,6 +1224,7 @@ static void aggr_cb(struct perf_evsel *counter, void *data, bool first)
 static void print_aggr(struct perf_stat_config *config,
 		       char *prefix)
 {
+	bool metric_only = config->metric_only;
 	FILE *output = config->output;
 	struct perf_evsel *counter;
 	int s, id, nr;
@@ -1388,6 +1388,7 @@ static void counter_aggr_cb(struct perf_evsel *counter, void *data,
 static void print_counter_aggr(struct perf_stat_config *config,
 			       struct perf_evsel *counter, char *prefix)
 {
+	bool metric_only = config->metric_only;
 	FILE *output = config->output;
 	double uval;
 	struct caggr_data cd = { .avg = 0.0 };
@@ -1540,6 +1541,7 @@ static void print_metric_headers(struct perf_stat_config *config,
 static void print_interval(struct perf_stat_config *config,
 			   char *prefix, struct timespec *ts)
 {
+	bool metric_only = config->metric_only;
 	FILE *output = config->output;
 	static int num_print_interval;
 
@@ -1716,6 +1718,7 @@ perf_evlist__print_counters(struct perf_evlist *evlist,
 			    struct timespec *ts,
 			    int argc, const char **argv)
 {
+	bool metric_only = config->metric_only;
 	int interval = config->interval;
 	struct perf_evsel *counter;
 	char buf[64], *prefix = NULL;
@@ -1843,7 +1846,7 @@ static int enable_metric_only(const struct option *opt __maybe_unused,
 			      const char *s __maybe_unused, int unset)
 {
 	force_metric_only = true;
-	metric_only = !unset;
+	stat_config.metric_only = !unset;
 	return 0;
 }
 
@@ -1922,7 +1925,7 @@ static const struct option stat_options[] = {
 		     "aggregate counts per thread", AGGR_THREAD),
 	OPT_UINTEGER('D', "delay", &stat_config.initial_delay,
 		     "ms to wait before starting measurement after program start"),
-	OPT_CALLBACK_NOOPT(0, "metric-only", &metric_only, NULL,
+	OPT_CALLBACK_NOOPT(0, "metric-only", &stat_config.metric_only, NULL,
 			"Only print computed metrics. No raw values", enable_metric_only),
 	OPT_BOOLEAN(0, "topdown", &topdown_run,
 			"measure topdown level 1 statistics"),
@@ -2345,7 +2348,7 @@ static int add_default_attributes(void)
 		if (pmu_have_event("msr", "aperf") &&
 		    pmu_have_event("msr", "smi")) {
 			if (!force_metric_only)
-				metric_only = true;
+				stat_config.metric_only = true;
 			err = parse_events(evsel_list, smi_cost_attrs, &errinfo);
 		} else {
 			fprintf(stderr, "To measure SMI cost, it needs "
@@ -2376,7 +2379,7 @@ static int add_default_attributes(void)
 		}
 
 		if (!force_metric_only)
-			metric_only = true;
+			stat_config.metric_only = true;
 		if (topdown_filter_events(topdown_attrs, &str,
 				arch_topdown_check_group(&warn)) < 0) {
 			pr_err("Out of memory\n");
@@ -2776,12 +2779,12 @@ int cmd_stat(int argc, const char **argv)
 		goto out;
 	}
 
-	if (metric_only && stat_config.aggr_mode == AGGR_THREAD) {
+	if (stat_config.metric_only && stat_config.aggr_mode == AGGR_THREAD) {
 		fprintf(stderr, "--metric-only is not supported with --per-thread\n");
 		goto out;
 	}
 
-	if (metric_only && run_count > 1) {
+	if (stat_config.metric_only && run_count > 1) {
 		fprintf(stderr, "--metric-only is not supported with -r\n");
 		goto out;
 	}

tools/perf/util/stat.h

@@ -93,6 +93,7 @@ struct perf_stat_config {
 	bool			 identifier;
 	bool			 csv_output;
 	bool			 interval_clear;
+	bool			 metric_only;
 	FILE			*output;
 	unsigned int		 interval;
 	unsigned int		 timeout;