perf config: Document 'man.viewer' variable in man page

Explain 'man.viewer' variable and how to add new man viewer tools.

Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1454577913-16401-6-git-send-email-treeze.taeung@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt
index 5e1db5ae53c46960d52415dd784e86d8b9683346..fd3f048c964482b62d67853d34c37e33b8fcace4 100644 (file)
--- a/tools/perf/Documentation/perf-config.txt
+++ b/tools/perf/Documentation/perf-config.txt
@@ -412,6 +412,15 @@ top.*::
                column by default.
                The default is 'true'.
 
+man.*::
+       man.viewer::
+               This option can assign a tool to view manual pages when 'help'
+               subcommand was invoked. Supported tools are 'man', 'woman'
+               (with emacs client) and 'konqueror'. Default is 'man'.
+
+               New man viewer tool can be also added using 'man.<tool>.cmd'
+               or use different path using 'man.<tool>.path' config option.
+
 SEE ALSO
 --------
 linkperf:perf[1]