[PATCH] perf sched: Make output_name variable static

[nanshuaibo]

The output_name variable is only used within builtin-sched.c for the
stats subcommand, so declare it static. This fixes a sparse warning:

  builtin-sched.c:4140:12: warning: symbol 'output_name' was not
  declared. Should it be static?

Signed-off-by: nanshuaibo <nanshuaibo811@xxxxxxx>
---
 tools/perf/builtin-sched.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index dd39a4fb..22486df2 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -4137,7 +4137,7 @@ static int disable_sched_schedstat(void)
 }
 
 /* perf.data or any other output file name used by stats subcommand (only). */
-const char *output_name;
+static const char *output_name;
 
 static int perf_sched__schedstat_record(struct perf_sched *sched,
 					int argc, const char **argv)
-- 
2.43.0