commit 0b93da1756df4fe930ee0220a6addce263a6e0ab
author Namhyung Kim <namhyung@kernel.org> Tue Jan 14 12:02:15 2014 +0900
committer Jiri Olsa <jolsa@redhat.com> Wed Apr 16 17:16:04 2014 +0200
tree 2af9abbfd073bb6b84a5e03bcac41b8e1eabe22a
parent 8810f6ced73556c1a63b6269a6cdad8d630aaaf0

perf tools: Add hist.percentage config option

Add hist.percentage option for setting default value of the
symbol_conf.filter_relative.  It affects the output of various perf
commands (like perf report, top and diff) only if filter(s) applied.

An user can write .perfconfig file like below to show absolute
percentage of filtered entries by default:

  $ cat ~/.perfconfig
  [hist]
  percentage = absolute

And it can be changed through command line:

  $ perf report --percentage relative

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1397145720-8063-6-git-send-email-namhyung@kernel.org
Signed-off-by: Jiri Olsa <jolsa@redhat.com>

tools/perf/builtin-diff.c

diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index c903fe1..6ef80f2 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -1134,6 +1134,8 @@
 
 int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused)
 {
+	perf_config(perf_default_config, NULL);
+
 	sort_order = diff__default_sort_order;
 	argc = parse_options(argc, argv, options, diff_usage, 0);
 

tools/perf/util/config.c

diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 3e0fdd3..24519e1 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -11,6 +11,7 @@
 #include "util.h"
 #include "cache.h"
 #include "exec_cmd.h"
+#include "util/hist.h"  /* perf_hist_config */
 
 #define MAXNAME (256)
 
@@ -355,6 +356,9 @@
 	if (!prefixcmp(var, "core."))
 		return perf_default_core_config(var, value);
 
+	if (!prefixcmp(var, "hist."))
+		return perf_hist_config(var, value);
+
 	/* Add other config variables here. */
 	return 0;
 }

tools/perf/util/hist.c

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 3c2dd23..5a89247 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -956,3 +956,11 @@
 
 	return 0;
 }
+
+int perf_hist_config(const char *var, const char *value)
+{
+	if (!strcmp(var, "hist.percentage"))
+		return parse_filter_percentage(NULL, value, 0);
+
+	return 0;
+}

tools/perf/util/hist.h

diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index a4ec336..5a0343e 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -258,5 +258,6 @@
 struct option;
 int parse_filter_percentage(const struct option *opt __maybe_unused,
 			    const char *arg, int unset __maybe_unused);
+int perf_hist_config(const char *var, const char *value);
 
 #endif	/* __PERF_HIST_H */