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authorMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>2015-02-27 13:50:31 +0900
committerArnaldo Carvalho de Melo <acme@redhat.com>2015-02-27 15:52:40 -0300
commit0497d0a8201a38f0c95edc8a1fc0325f2f879ddb (patch)
tree9419e197a5e45396353631d42748e6edc4560422 /tools/perf/builtin-buildid-cache.c
parentcc169c7c31253e80e0d504f0cd5dbb9f1e3d3ac5 (diff)
downloadlinux-0497d0a8201a38f0c95edc8a1fc0325f2f879ddb.tar.bz2
perf buildid-cache: Show usage with incorrect params
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.pt@hitachi.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20150227045030.1999.44006.stgit@localhost.localdomain Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-buildid-cache.c')
-rw-r--r--tools/perf/builtin-buildid-cache.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/perf/builtin-buildid-cache.c b/tools/perf/builtin-buildid-cache.c
index 04466c4ff9d7..d47a0cdc71c9 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;