[tip:perf/urgent] perf report/top: Add a tip about source line numbers with overhead

[tip-bot for Kim SeonYoung]

Commit-ID:  8649b6434ebc184e632a510c4121899481409c15
Gitweb:     http://git.kernel.org/tip/8649b6434ebc184e632a510c4121899481409c15
Author:     Kim SeonYoung <adamas0414@xxxxxxxxx>
AuthorDate: Thu, 29 Sep 2016 17:16:42 -0700
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Wed, 5 Oct 2016 19:47:55 -0300

perf report/top: Add a tip about source line numbers with overhead

There is a existing tip as below.

    If you have debuginfo enabled, try: perf report -s sym,srcline

However this tip only describe a condition to use --sort sym,scrline
options.  So there is lack of explanation in the tip. I think that it
would be better to add a tip that exactly explains the feature of --sort
srcline.

Signed-off-by: Seonyoung Kim <adamas0414@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Taeung Song <taeung@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1475194602-5596-1-git-send-email-adamas0414@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/Documentation/tips.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/Documentation/tips.txt b/tools/perf/Documentation/tips.txt
index 5950b5a..b031124 100644
--- a/tools/perf/Documentation/tips.txt
+++ b/tools/perf/Documentation/tips.txt
@@ -28,3 +28,4 @@ To change sampling frequency to 100 Hz: perf record -F 100
 See assembly instructions with percentage: perf annotate <symbol>
 If you prefer Intel style assembly, try: perf annotate -M intel
 For hierarchical output, try: perf report --hierarchy
+Order by the overhead of source file name and line number: perf report -s srcline