perf stat: Split print_cgroup() function

Likewise, split print_cgroup() for each output mode.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221114230227.1255976-5-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/stat-display.c

@@ -106,15 +106,32 @@ static void print_noise(struct perf_stat_config *config,
 	print_noise_pct(config, stddev_stats(&ps->res_stats), avg);
 }
 
+static void print_cgroup_std(struct perf_stat_config *config, const char *cgrp_name)
+{
+	fprintf(config->output, " %s", cgrp_name);
+}
+
+static void print_cgroup_csv(struct perf_stat_config *config, const char *cgrp_name)
+{
+	fprintf(config->output, "%s%s", config->csv_sep, cgrp_name);
+}
+
+static void print_cgroup_json(struct perf_stat_config *config, const char *cgrp_name)
+{
+	fprintf(config->output, "\"cgroup\" : \"%s\", ", cgrp_name);
+}
+
 static void print_cgroup(struct perf_stat_config *config, struct evsel *evsel)
 {
 	if (nr_cgroups) {
 		const char *cgrp_name = evsel->cgrp ? evsel->cgrp->name  : "";
 
 		if (config->json_output)
-			fprintf(config->output, "\"cgroup\" : \"%s\", ", cgrp_name);
+			print_cgroup_json(config, cgrp_name);
+		if (config->csv_output)
+			print_cgroup_csv(config, cgrp_name);
 		else
-			fprintf(config->output, "%s%s", config->csv_sep, cgrp_name);
+			print_cgroup_std(config, cgrp_name);
 	}
 }