lkml.org 
[lkml]   [2013]   [Nov]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[tip:perf/urgent] perf tools: Prevent condition that all sort keys are elided
Commit-ID:  7524f63b997cc02a80aa073558728ae3ee242cf8
Gitweb: http://git.kernel.org/tip/7524f63b997cc02a80aa073558728ae3ee242cf8
Author: Namhyung Kim <namhyung.kim@lge.com>
AuthorDate: Fri, 8 Nov 2013 17:53:42 +0900
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Mon, 11 Nov 2013 15:56:40 -0300

perf tools: Prevent condition that all sort keys are elided

If given sort keys are all elided there'll be no output except for the
overhead column - actually the TUI shows a noisy output. In this case
it'd be better to show up the sort keys rather than elide.

Before:

$ perf report -s comm -c perf
(...)
# Overhead
# ........
#
100.00%

After:

$ perf report -s comm -c perf
(...)
# Overhead Command
# ........ .......
#
100.00% perf

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1383900822-14609-1-git-send-email-namhyung@kernel.org
[ Us curly braces around multi-line statements, as requested by Ingo Molnar ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/sort.c | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 3c1b75c..8b0bb1f 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -1137,6 +1137,8 @@ static void sort_entry__setup_elide(struct sort_entry *se,

void sort__setup_elide(FILE *output)
{
+ struct sort_entry *se;
+
sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list,
"dso", output);
sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list,
@@ -1172,4 +1174,15 @@ void sort__setup_elide(FILE *output)
"snoop", output);
}

+ /*
+ * It makes no sense to elide all of sort entries.
+ * Just revert them to show up again.
+ */
+ list_for_each_entry(se, &hist_entry__sort_list, list) {
+ if (!se->elide)
+ return;
+ }
+
+ list_for_each_entry(se, &hist_entry__sort_list, list)
+ se->elide = false;
}

\
 
 \ /
  Last update: 2013-11-12 23:21    [W:0.065 / U:0.460 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site