[PATCH] perf tools: fix array_size.cocci warning

[Guo Zhengkui]

Fix the following coccicheck warning:
tools/perf/util/trace-event-parse.c:209:35-36: WARNING: Use ARRAY_SIZE

ARRAY_SIZE(arr) is a macro provided in tools/include/linux/kernel.h,
which not only measures the size of the array, but also makes sure
that `arr` is really an array.

It has been tested with gcc (Debian 8.3.0-6) 8.3.0.

Signed-off-by: Guo Zhengkui <guozhengkui@xxxxxxxx>
---
 tools/perf/util/trace-event-parse.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 9634f0ae57be..c9c83a40647c 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -206,7 +206,7 @@ unsigned long long eval_flag(const char *flag)
 	if (isdigit(flag[0]))
 		return strtoull(flag, NULL, 0);
 
-	for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++)
+	for (i = 0; i < (int)(ARRAY_SIZE(flags)); i++)
 		if (strcmp(flags[i].name, flag) == 0)
 			return flags[i].value;
 
-- 
2.20.1