[PATCH v4 06/29] trace-cmd: Add APIs for library initialization and free

["Tzvetomir Stoyanov (VMware)" <tz.stoyanov@gmail.com>]

The trace-cmd library has no APIs for initialization and free of the
whole library. Added these new APIs:
 tracecmd_lib_init()
 tracecmd_lib_free()
and call them in trace-cmd main function.

Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
 lib/trace-cmd/include/private/trace-cmd-private.h |  3 +++
 lib/trace-cmd/trace-util.c                        |  9 +++++++++
 tracecmd/trace-cmd.c                              | 11 ++++++++---
 3 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/lib/trace-cmd/include/private/trace-cmd-private.h b/lib/trace-cmd/include/private/trace-cmd-private.h
index 6a211333..e410a6f1 100644
--- a/lib/trace-cmd/include/private/trace-cmd-private.h
+++ b/lib/trace-cmd/include/private/trace-cmd-private.h
@@ -29,6 +29,9 @@
 
 struct tep_plugin_list *trace_load_plugins(struct tep_handle *tep, int flags);
 
+int tracecmd_lib_init(void);
+void tracecmd_lib_free(void);
+
 int *tracecmd_add_id(int *list, int id, int len);
 
 enum {
diff --git a/lib/trace-cmd/trace-util.c b/lib/trace-cmd/trace-util.c
index b0c98c72..61054ad2 100644
--- a/lib/trace-cmd/trace-util.c
+++ b/lib/trace-cmd/trace-util.c
@@ -624,3 +624,12 @@ bool tracecmd_is_version_supported(unsigned int version)
 		return true;
 	return false;
 }
+
+int tracecmd_lib_init(void)
+{
+	return 0;
+}
+
+void tracecmd_lib_free(void)
+{
+}
diff --git a/tracecmd/trace-cmd.c b/tracecmd/trace-cmd.c
index 00cdaa37..71c8f6d6 100644
--- a/tracecmd/trace-cmd.c
+++ b/tracecmd/trace-cmd.c
@@ -142,15 +142,20 @@ int main (int argc, char **argv)
 	if (argc < 2)
 		trace_usage(argc, argv);
 
+	tracecmd_lib_init();
+
 	for (i = 0; i < ARRAY_SIZE(commands); ++i) {
 		if (strcmp(argv[1], commands[i].name) == 0 ){
 			commands[i].run(argc, argv);
-			goto out;
+			break;
 		}
 	}
 
+	tracecmd_lib_free();
+
 	/* No valid command found, show help */
-	trace_usage(argc, argv);
-out:
+	if (i == ARRAY_SIZE(commands))
+		trace_usage(argc, argv);
+
 	exit(0);
 }
-- 
2.31.1