linux-kernel - [PATCH 2/3] perf sched map: Always show task comm with -v

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Message-Id: <20161024020246.14928-2-namhyung@kernel.org>
Date:   Mon, 24 Oct 2016 11:02:44 +0900
From:   Namhyung Kim <namhyung@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Jiri Olsa <jolsa@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        David Ahern <dsahern@...il.com>
Subject: [PATCH 2/3] perf sched map: Always show task comm with -v

I'd like to see the name of tasks with perf sched map, but it only shows
name of new tasks and then use short names after all.  This is not good
for long running tasks since it's hard for users to track the short
names.  This patch makes it show the names (except the idle task) when
-v option is used.  Probably we may make it as default behavior.

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/builtin-sched.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index 78006e991d91..97d6cbf486bb 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -1493,7 +1493,7 @@ static int map_switch_event(struct perf_sched *sched, struct perf_evsel *evsel,
 		goto out;
 
 	color_fprintf(stdout, color, "  %12.6f secs ", (double)timestamp / NSEC_PER_SEC);
-	if (new_shortname) {
+	if (new_shortname || (verbose && sched_in->tid)) {
 		const char *pid_color = color;
 
 		if (thread__has_color(sched_in))
-- 
2.10.0