rmmod -a removed modules recursively

include/libbb.h

@@ -357,6 +357,8 @@ typedef struct {
 extern procps_status_t * procps_scan(int save_user_arg0);
 extern unsigned short compare_string_array(const char *string_array[], const char *key);
 
+extern int my_query_module(const char *name, int which, void **buf, size_t *bufsize, size_t *ret);
+
 typedef struct llist_s {
 	char *data;
 	struct llist_s *link;

include/usage.h

@@ -1722,7 +1722,7 @@
 #define rmmod_full_usage \
 	"Unloads the specified kernel modules from the kernel.\n\n" \
 	"Options:\n" \
-	"\t-a\tTry to remove all unused kernel modules."
+	"\t-a\tRemove all unused modules (recursively)"
 #define rmmod_example_usage \
 	"$ rmmod tulip\n"