[tip:perf/core] perf stat: Add missing aggregation headers for --metric-only CSV

[tip-bot for Andi Kleen]

Commit-ID:  c51fd6395d67a6d414834db7f892c95594247d6f
Gitweb:     http://git.kernel.org/tip/c51fd6395d67a6d414834db7f892c95594247d6f
Author:     Andi Kleen <ak@xxxxxxxxxxxxxxx>
AuthorDate: Tue, 24 May 2016 12:52:39 -0700
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 6 Jun 2016 17:43:12 -0300

perf stat: Add missing aggregation headers for --metric-only CSV

When in CSV mode --metric-only outputs an header, unlike the other
modes. Previously it did not properly print headers for the aggregation
columns, so the headers were actually shifted against the real values.

Fix this here by outputting the correct headers for CSV.

v2: Indent array.

Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1464119559-17203-4-git-send-email-andi@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/builtin-stat.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index a168e72..dff6373 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -1316,6 +1316,14 @@ static int aggr_header_lens[] = {
 	[AGGR_GLOBAL] = 0,
 };
 
+static const char *aggr_header_csv[] = {
+	[AGGR_CORE] 	= 	"core,cpus,",
+	[AGGR_SOCKET] 	= 	"socket,cpus",
+	[AGGR_NONE] 	= 	"cpu,",
+	[AGGR_THREAD] 	= 	"comm-pid,",
+	[AGGR_GLOBAL] 	=	""
+};
+
 static void print_metric_headers(const char *prefix, bool no_indent)
 {
 	struct perf_stat_output_ctx out;
@@ -1330,6 +1338,12 @@ static void print_metric_headers(const char *prefix, bool no_indent)
 	if (!csv_output && !no_indent)
 		fprintf(stat_config.output, "%*s",
 			aggr_header_lens[stat_config.aggr_mode], "");
+	if (csv_output) {
+		if (stat_config.interval)
+			fputs("time,", stat_config.output);
+		fputs(aggr_header_csv[stat_config.aggr_mode],
+			stat_config.output);
+	}
 
 	/* Print metrics headers only */
 	evlist__for_each(evsel_list, counter) {