perf sched: Make common options cascading

The -i and -v options can be used in subcommands so enable cascading the
sched_options.  This fixes the following inconvenience in 'perf sched':

  $ perf sched -i perf.data.sched  map
  ... (it works well) ...

  $ perf sched map  -i perf.data.sched
    Error: unknown switch `i'

   Usage: perf sched map [<options>]

          --color-cpus <cpus>
                            highlight given CPUs in map
          --color-pids <pids>
                            highlight given pids in map
          --compact         map output in compact mode
          --cpus <cpus>     display given CPUs in map

With this patch, the second command line works with the perf.data.sched
data file.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/20161024030003.28534-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-sched.c

@@ -1954,6 +1954,15 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused)
 		.next_shortname2      = '0',
 		.skip_merge           = 0,
 	};
+	const struct option sched_options[] = {
+	OPT_STRING('i', "input", &input_name, "file",
+		    "input file name"),
+	OPT_INCR('v', "verbose", &verbose,
+		    "be more verbose (show symbol address, etc)"),
+	OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
+		    "dump raw trace in ASCII"),
+	OPT_END()
+	};
 	const struct option latency_options[] = {
 	OPT_STRING('s', "sort", &sched.sort_order, "key[,key2...]",
 		   "sort by key(s): runtime, switch, avg, max"),
@@ -1965,7 +1974,7 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused)
 		    "dump raw trace in ASCII"),
 	OPT_BOOLEAN('p', "pids", &sched.skip_merge,
 		    "latency stats per pid instead of per comm"),
-	OPT_END()
+	OPT_PARENT(sched_options)
 	};
 	const struct option replay_options[] = {
 	OPT_UINTEGER('r', "repeat", &sched.replay_repeat,
@@ -1975,16 +1984,7 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused)
 	OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
 		    "dump raw trace in ASCII"),
 	OPT_BOOLEAN('f', "force", &sched.force, "don't complain, do it"),
-	OPT_END()
-	};
-	const struct option sched_options[] = {
-	OPT_STRING('i', "input", &input_name, "file",
-		    "input file name"),
-	OPT_INCR('v', "verbose", &verbose,
-		    "be more verbose (show symbol address, etc)"),
-	OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
-		    "dump raw trace in ASCII"),
-	OPT_END()
+	OPT_PARENT(sched_options)
 	};
 	const struct option map_options[] = {
 	OPT_BOOLEAN(0, "compact", &sched.map.comp,
@@ -1995,7 +1995,7 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused)
                     "highlight given CPUs in map"),
 	OPT_STRING(0, "cpus", &sched.map.cpus_str, "cpus",
                     "display given CPUs in map"),
-	OPT_END()
+	OPT_PARENT(sched_options)
 	};
 	const char * const latency_usage[] = {
 		"perf sched latency [<options>]",