linux-kernel - [PATCH 6/7] perf, tools, stat: Add --metric-only support for -A

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Date:	Mon, 29 Feb 2016 14:36:25 -0800
From:	Andi Kleen <andi@...stfloor.org>
To:	acme@...nel.org
Cc:	jolsa@...nel.org, linux-kernel@...r.kernel.org,
	Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH 6/7] perf, tools, stat: Add --metric-only support for -A

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

Add metric only support for -A too. This requires a new print
function that prints the metrics in the right order.

v2: Fix manpage
Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
 tools/perf/Documentation/perf-stat.txt |  2 +-
 tools/perf/builtin-stat.c              | 48 ++++++++++++++++++++++++++++------
 2 files changed, 41 insertions(+), 9 deletions(-)

diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt
index 3929ab0..44095cd 100644
--- a/tools/perf/Documentation/perf-stat.txt
+++ b/tools/perf/Documentation/perf-stat.txt
@@ -141,7 +141,7 @@ The overhead percentage could be high in some cases, for instance with small, su
 
 --metric-only::
 Only print computed metrics. Print them in a single line.
-Don't show any raw values. Not supported with -A or --per-thread.
+Don't show any raw values. Not supported with --per-thread.
 
 --per-socket::
 Aggregate counts per processor socket for system-wide mode measurements.  This
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 30bb0ac..78a4205 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -1243,10 +1243,43 @@ static void print_counter(struct perf_evsel *counter, char *prefix)
 	}
 }
 
+static void print_no_aggr_metric(char *prefix)
+{
+	int cpu;
+	int nrcpus = 0;
+	struct perf_evsel *counter;
+	u64 ena, run, val;
+	double uval;
+
+	evlist__for_each(evsel_list, counter) {
+		nrcpus = perf_evsel__nr_cpus(counter);
+		break;
+	}
+	for (cpu = 0; cpu < nrcpus; cpu++) {
+		bool first = true;
+
+		if (prefix)
+			fputs(prefix, stat_config.output);
+		evlist__for_each(evsel_list, counter) {
+			if (first) {
+				aggr_printout(counter, cpu, 0);
+				first = false;
+			}
+			val = perf_counts(counter->counts, cpu, 0)->val;
+			ena = perf_counts(counter->counts, cpu, 0)->ena;
+			run = perf_counts(counter->counts, cpu, 0)->run;
+
+			uval = val * counter->scale;
+			printout(cpu, 0, counter, uval, prefix, run, ena, 1.0);
+		}
+		fputc('\n', stat_config.output);
+	}
+}
+
 static int aggr_header_lens[] = {
 	[AGGR_CORE] = 18,
 	[AGGR_SOCKET] = 12,
-	[AGGR_NONE] = 15,
+	[AGGR_NONE] = 6,
 	[AGGR_THREAD] = 24,
 	[AGGR_GLOBAL] = 0,
 };
@@ -1401,8 +1434,12 @@ static void print_counters(struct timespec *ts, int argc, const char **argv)
 			fputc('\n', stat_config.output);
 		break;
 	case AGGR_NONE:
-		evlist__for_each(evsel_list, counter)
-			print_counter(counter, prefix);
+		if (metric_only)
+			print_no_aggr_metric(prefix);
+		else {
+			evlist__for_each(evsel_list, counter)
+				print_counter(counter, prefix);
+		}
 		break;
 	case AGGR_UNSET:
 	default:
@@ -2170,11 +2207,6 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
 		goto out;
 	}
 
-	if (metric_only && stat_config.aggr_mode == AGGR_NONE) {
-		fprintf(stderr, "--metric-only is not supported with -A\n");
-		goto out;
-	}
-
 	if (metric_only && run_count > 1) {
 		fprintf(stderr, "--metric-only is not supported with -r\n");
 		goto out;
-- 
2.5.0