[PATCH 4/5] perf report: Add report.percentage config option

[Namhyung Kim <namhyung@kernel.org>]

Add report.percentage option for setting default value of the
symbol_conf.filter_relative.  It affects the report output only if a
filter applied.

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

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

And it can be changed through command line:

  $ perf report --percentage relative

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
 tools/perf/builtin-report.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 535bd6745355..1bb9e989c7bd 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -71,6 +71,16 @@ static int report__config(const char *var, const char *value, void *cb)
 		rep->min_percent = strtof(value, NULL);
 		return 0;
 	}
+	if (!strcmp(var, "report.percentage")) {
+		if (!strcmp(value, "relative"))
+			symbol_conf.filter_relative = true;
+		else if (!strcmp(value, "absolute"))
+			symbol_conf.filter_relative = false;
+		else
+			return -1;
+
+		return 0;
+	}
 
 	return perf_default_config(var, value, cb);
 }
-- 
1.7.11.7