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| author | Namhyung Kim <namhyung.kim@lge.com> | 2013-11-01 11:33:15 +0400 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-11-04 19:57:36 +0400 |
| commit | cc03c54296ccbeca5363dfe8f49af42d14960f28 (patch) | |
| tree | 9480bbc728687143fe5f291fca9dab1904ca08d7 /tools/perf/util/parse-options.c | |
| parent | d37a92dcb45094dc02836c8a77c693c6f9916fb2 (diff) | |
| download | linux-cc03c54296ccbeca5363dfe8f49af42d14960f28.tar.xz | |
perf stat: Enhance option parse error message
Print related option help messages only when it failed to process
options. While at it, modify parse_options_usage() to skip usage part
so that it can be used for showing multiple option help messages
naturally like below:
$ perf stat -Bx, ls
-B option not supported with -x
usage: perf stat [<options>] [<command>]
-B, --big-num print large numbers with thousands' separators
-x, --field-separator <separator>
print counts with custom separator
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Enthusiastically-Supported-by: Ingo Molnar <mingo@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1383291195-24386-6-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/parse-options.c')
| -rw-r--r-- | tools/perf/util/parse-options.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/perf/util/parse-options.c b/tools/perf/util/parse-options.c index 1caf7b9a01ee..31f404a032a9 100644 --- a/tools/perf/util/parse-options.c +++ b/tools/perf/util/parse-options.c @@ -569,7 +569,7 @@ int parse_options_usage(const char * const *usagestr, const char *optstr, bool short_opt) { if (!usagestr) - return PARSE_OPT_HELP; + goto opt; fprintf(stderr, "\n usage: %s\n", *usagestr++); while (*usagestr && **usagestr) @@ -582,6 +582,7 @@ int parse_options_usage(const char * const *usagestr, } fputc('\n', stderr); +opt: for ( ; opts->type != OPTION_END; opts++) { if (short_opt) { if (opts->short_name == *optstr) |