perf help: Fix --help for builtins

It seems that commit cc5848213329 ("perf help: Remove use of die and
handle errors") caused the problem - it changed the initial value of
'help_format' from HELP_FORMAT_MAN to HELP_FORMAT_NONE.

This broke the --help option for all builtins, that would produce no
output, while 'man perf-top' would work it MANPATH is properly setup.

Reported-by: Stephane Eranian <[email protected]>
Signed-off-by: Namhyung Kim <[email protected]>
Tested-by: David Ahern <[email protected]>
Acked-by: David Ahern <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

diff --git a/tools/perf/builtin-help.c b/tools/perf/builtin-help.c
index 411ee5664e98e1e765bf992f379c16ec30569585..178b88ae3d2f174a5a085f233163d54cef152337 100644 (file)
--- a/tools/perf/builtin-help.c
+++ b/tools/perf/builtin-help.c
@@ -414,7 +414,7 @@ static int show_html_page(const char *perf_cmd)
 int cmd_help(int argc, const char **argv, const char *prefix __maybe_unused)
 {
        bool show_all = false;
-       enum help_format help_format = HELP_FORMAT_NONE;
+       enum help_format help_format = HELP_FORMAT_MAN;
        struct option builtin_help_options[] = {
        OPT_BOOLEAN('a', "all", &show_all, "print all available commands"),
        OPT_SET_UINT('m', "man", &help_format, "show man page", HELP_FORMAT_MAN),