linux-kernel - [PATCH 10/15] perf stat: Pass struct outstate to printout()

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Date:   Wed, 23 Nov 2022 10:02:03 -0800
From:   Namhyung Kim <namhyung@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...nel.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Ian Rogers <irogers@...gle.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        linux-perf-users@...r.kernel.org,
        Kan Liang <kan.liang@...ux.intel.com>,
        Zhengjun Xing <zhengjun.xing@...ux.intel.com>,
        James Clark <james.clark@....com>,
        Athira Jajeev <atrajeev@...ux.vnet.ibm.com>
Subject: [PATCH 10/15] perf stat: Pass struct outstate to printout()

The printout() takes a lot of arguments and sets an outstate with the
value.  Instead, we can fill the outstate first and then pass it to
reduce the number of arguments.

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/util/stat-display.c | 38 ++++++++++++++++------------------
 1 file changed, 18 insertions(+), 20 deletions(-)

diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c
index 3ed63061d6f8..dd190f71e933 100644
--- a/tools/perf/util/stat-display.c
+++ b/tools/perf/util/stat-display.c
@@ -673,22 +673,15 @@ static bool is_mixed_hw_group(struct evsel *counter)
 	return false;
 }
 
-static void printout(struct perf_stat_config *config, struct aggr_cpu_id id, int nr,
-		     struct evsel *counter, double uval,
-		     const char *prefix, u64 run, u64 ena, double noise,
+static void printout(struct perf_stat_config *config, struct outstate *os,
+		     double uval, u64 run, u64 ena, double noise,
 		     struct runtime_stat *st, int map_idx)
 {
 	struct perf_stat_output_ctx out;
-	struct outstate os = {
-		.fh = config->output,
-		.prefix = prefix ? prefix : "",
-		.id = id,
-		.nr = nr,
-		.evsel = counter,
-	};
 	print_metric_t pm;
 	new_line_t nl;
 	bool ok = true;
+	struct evsel *counter = os->evsel;
 
 	if (config->csv_output) {
 		static const int aggr_fields[AGGR_MAX] = {
@@ -704,7 +697,7 @@ static void printout(struct perf_stat_config *config, struct aggr_cpu_id id, int
 
 		pm = config->metric_only ? print_metric_only_csv : print_metric_csv;
 		nl = config->metric_only ? new_line_metric : new_line_csv;
-		os.nfields = 3 + aggr_fields[config->aggr_mode] + (counter->cgrp ? 1 : 0);
+		os->nfields = 3 + aggr_fields[config->aggr_mode] + (counter->cgrp ? 1 : 0);
 	} else if (config->json_output) {
 		pm = config->metric_only ? print_metric_only_json : print_metric_json;
 		nl = config->metric_only ? new_line_metric : new_line_json;
@@ -715,7 +708,7 @@ static void printout(struct perf_stat_config *config, struct aggr_cpu_id id, int
 
 	if (run == 0 || ena == 0 || counter->counts->scaled == -1) {
 		if (config->metric_only) {
-			pm(config, &os, NULL, "", "", 0);
+			pm(config, os, NULL, "", "", 0);
 			return;
 		}
 
@@ -732,11 +725,11 @@ static void printout(struct perf_stat_config *config, struct aggr_cpu_id id, int
 
 	out.print_metric = pm;
 	out.new_line = nl;
-	out.ctx = &os;
+	out.ctx = os;
 	out.force_header = false;
 
 	if (!config->metric_only) {
-		abs_printout(config, id, nr, counter, uval, ok);
+		abs_printout(config, os->id, os->nr, counter, uval, ok);
 
 		print_noise(config, counter, noise, /*before_metric=*/true);
 		print_running(config, run, ena, /*before_metric=*/true);
@@ -814,6 +807,13 @@ static void print_counter_aggrdata(struct perf_stat_config *config,
 	struct aggr_cpu_id id = config->aggr_map->map[s];
 	double avg = aggr->counts.val;
 	bool metric_only = config->metric_only;
+	struct outstate os = {
+		.fh = config->output,
+		.prefix = prefix ? prefix : "",
+		.id = id,
+		.nr = aggr->nr,
+		.evsel = counter,
+	};
 
 	if (counter->supported && aggr->nr == 0)
 		return;
@@ -834,8 +834,7 @@ static void print_counter_aggrdata(struct perf_stat_config *config,
 
 	uval = val * counter->scale;
 
-	printout(config, id, aggr->nr, counter, uval,
-		 prefix, run, ena, avg, &rt_stat, s);
+	printout(config, &os, uval, run, ena, avg, &rt_stat, s);
 
 	if (!metric_only)
 		fputc('\n', output);
@@ -971,14 +970,14 @@ static void print_no_aggr_metric(struct perf_stat_config *config,
 		evlist__for_each_entry(evlist, counter) {
 			u64 ena, run, val;
 			double uval;
-			struct aggr_cpu_id id;
 			struct perf_stat_evsel *ps = counter->stats;
 			int counter_idx = perf_cpu_map__idx(evsel__cpus(counter), cpu);
 
 			if (counter_idx < 0)
 				continue;
 
-			id = aggr_cpu_id__cpu(cpu, /*data=*/NULL);
+			os.evsel = counter;
+			os.id = aggr_cpu_id__cpu(cpu, /*data=*/NULL);
 			if (first) {
 				print_metric_begin(config, evlist, &os, counter_idx);
 				first = false;
@@ -988,8 +987,7 @@ static void print_no_aggr_metric(struct perf_stat_config *config,
 			run = ps->aggr[counter_idx].counts.run;
 
 			uval = val * counter->scale;
-			printout(config, id, 0, counter, uval, prefix,
-				 run, ena, 1.0, &rt_stat, counter_idx);
+			printout(config, &os, uval, run, ena, 1.0, &rt_stat, counter_idx);
 		}
 		if (!first)
 			print_metric_end(config);
-- 
2.38.1.584.g0f3c55d4c2-goog