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>
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@ -343,6 +343,11 @@ int cmd_buildid_cache(int argc, const char **argv,
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argc = parse_options(argc, argv, buildid_cache_options,
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argc = parse_options(argc, argv, buildid_cache_options,
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buildid_cache_usage, 0);
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buildid_cache_usage, 0);
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if (argc || (!add_name_list_str && !kcore_filename &&
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!remove_name_list_str && !purge_name_list_str &&
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!missing_filename && !update_name_list_str))
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usage_with_options(buildid_cache_usage, buildid_cache_options);
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if (missing_filename) {
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if (missing_filename) {
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file.path = missing_filename;
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file.path = missing_filename;
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file.force = force;
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file.force = force;
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