lkml.org 
[lkml]   [2016]   [Nov]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 5/5] perf hists: Fix column length on --hierarchy
Date
From: Namhyung Kim <namhyung@kernel.org>

Markus reported that there's a weird behavior on perf top --hierarchy
regarding the column length.

Looking at the code, I found a dubious code which affects the symptoms.
When --hierarchy option is used, the last column length might be
inaccurate since it skips to update the length on leaf entries.

I cannot remember why it did and looks like a leftover from previous
version during the development.

Anyway, updating the column length often is not harmful. So let's move
the code out.

Reported-and-Tested-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Fixes: 1a3906a7e6b9 ("perf hists: Resort hist entries with hierarchy")
Link: http://lkml.kernel.org/r/20161108130833.9263-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/hist.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index b02992efb513..a69f027368ef 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -1600,18 +1600,18 @@ static void hists__hierarchy_output_resort(struct hists *hists,
if (prog)
ui_progress__update(prog, 1);

+ hists->nr_entries++;
+ if (!he->filtered) {
+ hists->nr_non_filtered_entries++;
+ hists__calc_col_len(hists, he);
+ }
+
if (!he->leaf) {
hists__hierarchy_output_resort(hists, prog,
&he->hroot_in,
&he->hroot_out,
min_callchain_hits,
use_callchain);
- hists->nr_entries++;
- if (!he->filtered) {
- hists->nr_non_filtered_entries++;
- hists__calc_col_len(hists, he);
- }
-
continue;
}

--
2.7.4
\
 
 \ /
  Last update: 2016-11-11 16:54    [W:0.176 / U:0.508 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site