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Groups > linux.kernel > #1255063

[PATCH 6/9] perf, tools, stat: Implement CSV metrics output

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From: Andi Kleen <ak@linux.intel.com>

Now support CSV output for metrics. With the new output callbacks
this is relatively straight forward by creating new callbacks.

The new line callback needs to know the number of fields to skip them
correctly

v2: Split out function argument changes
v3: Reenable metrics for real.
v4: Fix wrong hunk from refactoring.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
 tools/perf/builtin-stat.c | 67 +++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 65 insertions(+), 2 deletions(-)

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 1d77520..73b5cea 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -488,6 +488,8 @@ static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
 struct outstate {
 	FILE *fh;
 	const char *prefix;
+	int  nfields;
+	u64  run, ena;
 };
 
 #define METRIC_LEN  35
@@ -527,6 +529,49 @@ static void print_metric_std(void *ctx, const char *color, const char *fmt,
 	fprintf(out, " %-*s", METRIC_LEN - n - 1, unit);
 }
 
+static void new_line_csv(void *ctx)
+{
+	struct outstate *os = ctx;
+	int i;
+
+	fputc('\n', os->fh);
+	if (os->prefix)
+		fprintf(os->fh, "%s%s", os->prefix, csv_sep);
+	for (i = 0; i < os->nfields; i++)
+		fputs(csv_sep, os->fh);
+}
+
+static void print_metric_csv(void *ctx,
+			     const char *color __maybe_unused,
+			     const char *fmt, const char *unit, double val)
+{
+	struct outstate *os = ctx;
+	FILE *out = os->fh;
+	char buf[64], *vals, *ends;
+
+	if (unit == NULL) {
+		fprintf(out, "%s%s%s%s", csv_sep, csv_sep, csv_sep, csv_sep);
+		return;
+	}
+	fprintf(out, "%s%" PRIu64 "%s%.2f%s",
+		csv_sep,
+		os->run,
+		csv_sep,
+		os->ena ? 100.0 * os->run / os->ena : 100.0,
+		csv_sep);
+	snprintf(buf, sizeof(buf), fmt, val);
+	vals = buf;
+	while (isspace(*vals))
+		vals++;
+	ends = vals;
+	while (isdigit(*ends) || *ends == '.')
+		ends++;
+	*ends = 0;
+	while (isspace(*unit))
+		unit++;
+	fprintf(out, "%s%s%s", vals, csv_sep, unit);
+}
+
 static void nsec_printout(int id, int nr, struct perf_evsel *evsel, double avg)
 {
 	FILE *output = stat_config.output;
@@ -598,6 +643,25 @@ static void printout(int id, int nr, struct perf_evsel *counter, double uval,
 
 	nl = new_line_std;
 
+	if (csv_output) {
+		static int aggr_fields[] = {
+			[AGGR_GLOBAL] = 0,
+			[AGGR_THREAD] = 1,
+			[AGGR_NONE] = 1,
+			[AGGR_SOCKET] = 2,
+			[AGGR_CORE] = 2,
+		};
+
+		pm = print_metric_csv;
+		nl = new_line_csv;
+		os.nfields = 1;
+		os.nfields += aggr_fields[stat_config.aggr_mode];
+		if (counter->cgrp)
+			os.nfields++;
+		os.run = run;
+		os.ena = ena;
+	}
+
 	if (nsec_counter(counter))
 		nsec_printout(id, nr, counter, uval);
 	else
@@ -607,8 +671,7 @@ static void printout(int id, int nr, struct perf_evsel *counter, double uval,
 	out.new_line = nl;
 	out.ctx = &os;
 
-	if (!csv_output)
-		perf_stat__print_shadow_stats(counter, uval,
+	perf_stat__print_shadow_stats(counter, uval,
 				stat_config.aggr_mode == AGGR_GLOBAL ? 0 :
 				cpu_map__id_to_cpu(id),
 				&out);
-- 
2.4.3

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perf, tools: Refactor and support interval and CSV metrics v5 Andi Kleen <andi@firstfloor.org> - 2015-10-24 02:10 +0200
  [PATCH 2/9] tools, perf, stat: Use common printout faction to avoid duplicated code Andi Kleen <andi@firstfloor.org> - 2015-10-24 02:10 +0200
  [PATCH 7/9] perf, tools, stat: Move non counting counter printing to printout Andi Kleen <andi@firstfloor.org> - 2015-10-24 02:10 +0200
  [PATCH 9/9] perf, tools, stat: Document CSV format in manpage Andi Kleen <andi@firstfloor.org> - 2015-10-24 02:10 +0200
  [PATCH 6/9] perf, tools, stat: Implement CSV metrics output Andi Kleen <andi@firstfloor.org> - 2015-10-24 02:10 +0200
  [PATCH 1/9] perf, tools, stat: Move sw clock metrics printout to stat-shadow Andi Kleen <andi@firstfloor.org> - 2015-10-24 02:10 +0200
  [PATCH 5/9] perf, tools, stat: Move noise/running printing into printout Andi Kleen <andi@firstfloor.org> - 2015-10-24 02:10 +0200
    Re: [PATCH 5/9] perf, tools, stat: Move noise/running printing into  printout Jiri Olsa <jolsa@redhat.com> - 2015-10-26 16:40 +0100
      Re: [PATCH 5/9] perf, tools, stat: Move noise/running printing into  printout Andi Kleen <andi@firstfloor.org> - 2015-10-27 03:50 +0100
  [PATCH 3/9] perf, tools, stat: Abstract stat metrics printing Andi Kleen <andi@firstfloor.org> - 2015-10-24 02:10 +0200
  [PATCH 8/9] perf, tools: Support metrics in --per-core/socket mode Andi Kleen <andi@firstfloor.org> - 2015-10-24 02:10 +0200

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