linux-kernel - [tip:perf/core] perf c2c report: Setup browser after opening perf.data

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Date:   Wed, 23 Nov 2016 20:16:01 -0800
From:   tip-bot for Jiri Olsa <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, dzickus@...hat.com,
        a.p.zijlstra@...llo.nl, hpa@...or.com, namhyung@...nel.org,
        tglx@...utronix.de, jolsa@...hat.com, dsahern@...il.com,
        jmario@...hat.com, andi@...stfloor.org, acme@...hat.com,
        jolsa@...nel.org, mingo@...nel.org
Subject: [tip:perf/core] perf c2c report: Setup browser after opening
 perf.data

Commit-ID:  e8c5fe101e55e4c45a2859cea2b4c374595f8867
Gitweb:     http://git.kernel.org/tip/e8c5fe101e55e4c45a2859cea2b4c374595f8867
Author:     Jiri Olsa <jolsa@...nel.org>
AuthorDate: Mon, 21 Nov 2016 22:33:27 +0100
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Wed, 23 Nov 2016 10:44:04 -0300

perf c2c report: Setup browser after opening perf.data

Because of the early browser switch we won't get possible error
messages, as it will clear the screen right after showing the message,
e.g.:

Before:

   $ sudo perf c2c report -d lcl
   $

After:
   $ sudo perf c2c report -d lcl
   File perf.data not owned by current user or root (use -f to override)
   $
   $ ls -la perf.data
   -rw-------. 1 acme acme 26648 Nov 22 15:11 perf.data
   $

Signed-off-by: Jiri Olsa <jolsa@...hat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Andi Kleen <andi@...stfloor.org>
Cc: David Ahern <dsahern@...il.com>
Cc: Don Zickus <dzickus@...hat.com>
Cc: Joe Mario <jmario@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/r/1479764011-10732-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/builtin-c2c.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index c6d0dda..15addb0 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -2535,13 +2535,6 @@ static int perf_c2c__report(int argc, const char **argv)
 	if (c2c.stats_only)
 		c2c.use_stdio = true;
 
-	if (c2c.use_stdio)
-		use_browser = 0;
-	else
-		use_browser = 1;
-
-	setup_browser(false);
-
 	if (!input_name || !strlen(input_name))
 		input_name = "perf.data";
 
@@ -2568,6 +2561,7 @@ static int perf_c2c__report(int argc, const char **argv)
 		pr_debug("No memory for session\n");
 		goto out;
 	}
+
 	err = setup_nodes(session);
 	if (err) {
 		pr_err("Failed setup nodes\n");
@@ -2587,6 +2581,13 @@ static int perf_c2c__report(int argc, const char **argv)
 		goto out_session;
 	}
 
+	if (c2c.use_stdio)
+		use_browser = 0;
+	else
+		use_browser = 1;
+
+	setup_browser(false);
+
 	err = perf_session__process_events(session);
 	if (err) {
 		pr_err("failed to process sample\n");