Show usage if no action is specified or unexpected parameter
is given. In other words, be more user friendly.
Signed-off-by: Masami Hiramatsu <masami.hiramatsu...@hitachi.com>
---
tools/perf/builtin-buildid-cache.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/tools/perf/builtin-buildid-cache.c
b/tools/perf/builtin-buildid-cache.c
index 04466c4..d47a0cd 100644
--- a/tools/perf/builtin-buildid-cache.c
+++ b/tools/perf/builtin-buildid-cache.c
@@ -343,6 +343,11 @@ int cmd_buildid_cache(int argc, const char **argv,
argc = parse_options(argc, argv, buildid_cache_options,
buildid_cache_usage, 0);
+ if (argc || (!add_name_list_str && !kcore_filename &&
+ !remove_name_list_str && !purge_name_list_str &&
+ !missing_filename && !update_name_list_str))
+ usage_with_options(buildid_cache_usage, buildid_cache_options);
+
if (missing_filename) {
file.path = missing_filename;
file.force = force;
--
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