perf c2c: Add c2c command

Adding c2c command base wirings. Its implementation is going to be added
gradually in following patches.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1474558645-19956-11-git-send-email-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/Build

@@ -21,6 +21,7 @@ perf-y += builtin-inject.o
 perf-y += builtin-mem.o
 perf-y += builtin-data.o
 perf-y += builtin-version.o
+perf-y += builtin-c2c.o
 
 perf-$(CONFIG_AUDIT) += builtin-trace.o
 perf-$(CONFIG_LIBELF) += builtin-probe.o

tools/perf/builtin-c2c.c

+#include <linux/compiler.h>
+#include <linux/kernel.h>
+#include "util.h"
+#include "debug.h"
+#include "builtin.h"
+#include <subcmd/parse-options.h>
+
+static const char * const c2c_usage[] = {
+	"perf c2c",
+	NULL
+};
+
+int cmd_c2c(int argc, const char **argv, const char *prefix __maybe_unused)
+{
+	const struct option c2c_options[] = {
+	OPT_INCR('v', "verbose", &verbose, "be more verbose"),
+	OPT_END()
+	};
+
+	argc = parse_options(argc, argv, c2c_options, c2c_usage,
+			     PARSE_OPT_STOP_AT_NON_OPTION);
+	return 0;
+}

tools/perf/builtin.h

@@ -18,6 +18,7 @@ int cmd_bench(int argc, const char **argv, const char *prefix);
 int cmd_buildid_cache(int argc, const char **argv, const char *prefix);
 int cmd_buildid_list(int argc, const char **argv, const char *prefix);
 int cmd_config(int argc, const char **argv, const char *prefix);
+int cmd_c2c(int argc, const char **argv, const char *prefix);
 int cmd_diff(int argc, const char **argv, const char *prefix);
 int cmd_evlist(int argc, const char **argv, const char *prefix);
 int cmd_help(int argc, const char **argv, const char *prefix);

tools/perf/perf.c

@@ -43,6 +43,7 @@ static struct cmd_struct commands[] = {
 	{ "buildid-cache", cmd_buildid_cache, 0 },
 	{ "buildid-list", cmd_buildid_list, 0 },
 	{ "config",	cmd_config,	0 },
+	{ "c2c",	cmd_c2c,	0 },
 	{ "diff",	cmd_diff,	0 },
 	{ "evlist",	cmd_evlist,	0 },
 	{ "help",	cmd_help,	0 },