perf sched: Introduce --list-cmds for use by scripts

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Acked-by: David Ahern <dsahern@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1394853474-31019-5-git-send-email-artagnon@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>

tools/perf/builtin-sched.c

@@ -1713,8 +1713,10 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused)
 		"perf sched replay [<options>]",
 		NULL
 	};
-	const char * const sched_usage[] = {
-		"perf sched [<options>] {record|latency|map|replay|script}",
+	const char *const sched_subcommands[] = { "record", "latency", "map",
+						  "replay", "script", NULL };
+	const char *sched_usage[] = {
+		NULL,
 		NULL
 	};
 	struct trace_sched_handler lat_ops  = {
@@ -1736,8 +1738,8 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused)
 	for (i = 0; i < ARRAY_SIZE(sched.curr_pid); i++)
 		sched.curr_pid[i] = -1;
 
-	argc = parse_options(argc, argv, sched_options, sched_usage,
-			     PARSE_OPT_STOP_AT_NON_OPTION);
+	argc = parse_options_subcommand(argc, argv, sched_options, sched_subcommands,
+					sched_usage, PARSE_OPT_STOP_AT_NON_OPTION);
 	if (!argc)
 		usage_with_options(sched_usage, sched_options);
 

tools/perf/perf-completion.sh

@@ -122,7 +122,7 @@ __perf_main ()
 		evts=$($cmd list --raw-dump)
 		__perfcomp_colon "$evts" "$cur"
 	# List subcommands for perf commands
-	elif [[ $prev == @(kvm|kmem|mem|lock) ]]; then
+	elif [[ $prev == @(kvm|kmem|mem|lock|sched) ]]; then
 		subcmds=$($cmd $prev --list-cmds)
 		__perfcomp_colon "$subcmds" "$cur"
 	# List long option names