Commit-ID: 7524f63b997cc02a80aa073558728ae3ee242cf8
Gitweb: http://git.kernel.org/tip/7524f63b997cc02a80aa073558728ae3ee242cf8
Author: Namhyung Kim <namhyung....@lge.com>
AuthorDate: Fri, 8 Nov 2013 17:53:42 +0900
Committer: Arnaldo Carvalho de Melo <a...@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 <namhy...@kernel.org>
Acked-by: Ingo Molnar <mi...@kernel.org>
Cc: Ingo Molnar <mi...@kernel.org>
Cc: Paul Mackerras <pau...@samba.org>
Cc: Peter Zijlstra <a.p.zijls...@chello.nl>
Link:
http://lkml.kernel.org/r/1383900822-14609-1-git-send-email-namhy...@kernel.org
[ Us curly braces around multi-line statements, as requested by Ingo Molnar ]
Signed-off-by: Arnaldo Carvalho de Melo <a...@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;
}
--
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