[tip:perf/core] perf config: Reimplement show_config() using config_set__for_each

[tip-bot for Taeung Song <tipbot@xxxxxxxxx>]

Commit-ID:  4a35b3497c413de8b409f9d75700eeb4772b21b8
Gitweb:     http://git.kernel.org/tip/4a35b3497c413de8b409f9d75700eeb4772b21b8
Author:     Taeung Song <treeze.taeung@xxxxxxxxx>
AuthorDate: Thu, 23 Jun 2016 23:14:32 +0900
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Thu, 23 Jun 2016 17:23:00 -0300

perf config: Reimplement show_config() using config_set__for_each

Recently config_set__for_each got added.  In order to let show_config()
be short and clear, rewrite this function using it.

Signed-off-by: Taeung Song <treeze.taeung@xxxxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Wang Nan <wangnan0@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1466691272-24117-4-git-send-email-treeze.taeung@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/builtin-config.c | 17 +++++------------
 1 file changed, 5 insertions(+), 12 deletions(-)

diff --git a/tools/perf/builtin-config.c b/tools/perf/builtin-config.c
index cfd1036..e4207a2 100644
--- a/tools/perf/builtin-config.c
+++ b/tools/perf/builtin-config.c
@@ -37,23 +37,16 @@ static int show_config(struct perf_config_set *set)
 {
 	struct perf_config_section *section;
 	struct perf_config_item *item;
-	struct list_head *sections;
 
 	if (set == NULL)
 		return -1;
 
-	sections = &set->sections;
-	if (list_empty(sections))
-		return -1;
-
-	list_for_each_entry(section, sections, node) {
-		list_for_each_entry(item, &section->items, node) {
-			char *value = item->value;
+	perf_config_set__for_each_entry(set, section, item) {
+		char *value = item->value;
 
-			if (value)
-				printf("%s.%s=%s\n", section->name,
-				       item->name, value);
-		}
+		if (value)
+			printf("%s.%s=%s\n", section->name,
+			       item->name, value);
 	}
 
 	return 0;
--
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