From 7524f63b997cc02a80aa073558728ae3ee242cf8 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Fri, 8 Nov 2013 17:53:42 +0900 Subject: [PATCH] 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 Acked-by: Ingo Molnar Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra 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 --- 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 3c1b75c8b9a6..8b0bb1f4494a 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; }