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perf help: Fix a bug during strstart() conversion 

[ Upstream commit af98f2273f ]

The commit 8e99b6d453 changed prefixcmp() to strstart() but missed to
change the return value in some place.  It makes perf help print
annoying output even for sane config items like below:

  $ perf help
  '.root': unsupported man viewer sub key.
  ...

Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Taeung Song <treeze.taeung@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Sihyeon Jang <uneedsihyeon@gmail.com>
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20171114001542.GA16464@sejong
Fixes: 8e99b6d453 ("tools include: Adopt strstarts() from the kernel")
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
pull/10/head
Namhyung Kim 2017-11-14 09:15:42 +09:00 committed by Greg Kroah-Hartman
parent bfb3906919
commit 182d948c7a
1 changed files with 2 additions and 2 deletions
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4
tools/perf/builtin-help.c
View File

@ -284,7 +284,7 @@ static int perf_help_config(const char *var, const char *value, void *cb)
add_man_viewer(value);
return 0;
}
if (!strstarts(var, "man."))
if (strstarts(var, "man."))
return add_man_viewer_info(var, value);
return 0;
@ -314,7 +314,7 @@ static const char *cmd_to_page(const char *perf_cmd)
if (!perf_cmd)
return "perf";
else if (!strstarts(perf_cmd, "perf"))
else if (strstarts(perf_cmd, "perf"))
return perf_cmd;
return asprintf(&s, "perf-%s", perf_cmd) < 0 ? NULL : s;