linux-kernel - [PATCH 12/14] perf diff: Display data file info ahead of the diff output

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Date:	Wed, 28 Nov 2012 14:52:47 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	Jiri Olsa <jolsa@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...e.hu>, Paul Mackerras <paulus@...ba.org>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Namhyung Kim <namhyung@...nel.org>
Subject: [PATCH 12/14] perf diff: Display data file info ahead of the diff output

Data files are referenced through the index of the file
on the command line. Adding list of data files for each
index to ease up navigation.

Signed-off-by: Jiri Olsa <jolsa@...hat.com>
Cc: Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Corey Ashford <cjashfor@...ux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/builtin-diff.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 81f7529..50e1ea3 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -632,6 +632,19 @@ static void hists__process(struct hists *hists)
 	hists__fprintf(hists, true, 0, 0, stdout);
 }
 
+static void data_fprintf(void)
+{
+	struct diff_data *d;
+	int i;
+
+	fprintf(stdout, "# Data files:\n");
+
+	for_each_data(i, d)
+		fprintf(stdout, "#  [%d] %s\n", d->idx, d->file);
+
+	fprintf(stdout, "#\n");
+}
+
 static int data_process(void)
 {
 	struct perf_evlist *evlist_base = data[0].session->evlist;
@@ -662,6 +675,9 @@ static int data_process(void)
 		fprintf(stdout, "%s# Event '%s'\n#\n", first ? "" : "\n",
 			perf_evsel__name(evsel_base));
 
+		if (data_cnt > 2)
+			data_fprintf();
+
 		hists__process(&evsel_base->hists);
 
 		first = false;
-- 
1.7.11.7

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