956 static void __get_system_dir(struct trace_subsystem_dir *dir)  in __get_system_dir()  argument
958 	WARN_ON_ONCE(dir->ref_count == 0);  in __get_system_dir()
959 	dir->ref_count++;  in __get_system_dir()
960 	__get_system(dir->subsystem);  in __get_system_dir()
963 static void __put_system_dir(struct trace_subsystem_dir *dir)  in __put_system_dir()  argument
965 	WARN_ON_ONCE(dir->ref_count == 0);  in __put_system_dir()
967 	WARN_ON_ONCE(system_refcount(dir->subsystem) == 1 && dir->ref_count != 1);  in __put_system_dir()
969 	__put_system(dir->subsystem);  in __put_system_dir()
970 	if (!--dir->ref_count)  in __put_system_dir()
971 		kfree(dir);  in __put_system_dir()
974 static void put_system(struct trace_subsystem_dir *dir)  in put_system()  argument
977 	__put_system_dir(dir);  in put_system()
981 static void remove_subsystem(struct trace_subsystem_dir *dir)  in remove_subsystem()  argument
983 	if (!dir)  in remove_subsystem()
986 	if (!--dir->nr_events) {  in remove_subsystem()
987 		eventfs_remove_dir(dir->ei);  in remove_subsystem()
988 		list_del(&dir->list);  in remove_subsystem()
989 		__put_system_dir(dir);  in remove_subsystem()
1451 	struct trace_subsystem_dir *dir = filp->private_data;  in system_enable_read()  local
1452 	struct event_subsystem *system = dir->subsystem;  in system_enable_read()
1455 	struct trace_array *tr = dir->tr;  in system_enable_read()
1497 	struct trace_subsystem_dir *dir = filp->private_data;  in system_enable_write()  local
1498 	struct event_subsystem *system = dir->subsystem;  in system_enable_write()
1521 	ret = __ftrace_set_clr_event(dir->tr, NULL, name, NULL, val);  in system_enable_write()
1763 	struct trace_subsystem_dir *dir = NULL, *iter_dir;  in subsystem_open()  local
1779 				dir = iter_dir;  in subsystem_open()
1780 				if (dir->nr_events) {  in subsystem_open()
1781 					__get_system_dir(dir);  in subsystem_open()
1782 					system = dir->subsystem;  in subsystem_open()
1797 		put_system(dir);  in subsystem_open()
1804 		put_system(dir);  in subsystem_open()
1812 	struct trace_subsystem_dir *dir;  in system_tr_open()  local
1817 	dir = kzalloc(sizeof(*dir), GFP_KERNEL);  in system_tr_open()
1818 	if (!dir)  in system_tr_open()
1823 		kfree(dir);  in system_tr_open()
1826 	dir->tr = tr;  in system_tr_open()
1827 	filp->private_data = dir;  in system_tr_open()
1834 	struct trace_subsystem_dir *dir = file->private_data;  in subsystem_release()  local
1836 	trace_array_put(dir->tr);  in subsystem_release()
1843 	if (dir->subsystem)  in subsystem_release()
1844 		put_system(dir);  in subsystem_release()
1846 		kfree(dir);  in subsystem_release()
1855 	struct trace_subsystem_dir *dir = filp->private_data;  in subsystem_filter_read()  local
1856 	struct event_subsystem *system = dir->subsystem;  in subsystem_filter_read()
1882 	struct trace_subsystem_dir *dir = filp->private_data;  in subsystem_filter_write()  local
1893 	err = apply_subsystem_event_filter(dir, buf);  in subsystem_filter_write()
2338 	struct trace_subsystem_dir *dir;  in event_subsystem_dir()  local
2353 	list_for_each_entry(dir, &tr->systems, list) {  in event_subsystem_dir()
2354 		system = dir->subsystem;  in event_subsystem_dir()
2356 			dir->nr_events++;  in event_subsystem_dir()
2357 			file->system = dir;  in event_subsystem_dir()
2358 			return dir->ei;  in event_subsystem_dir()
2371 	dir = kmalloc(sizeof(*dir), GFP_KERNEL);  in event_subsystem_dir()
2372 	if (!dir)  in event_subsystem_dir()
2388 	ei = eventfs_create_dir(name, parent, system_entries, nr_entries, dir);  in event_subsystem_dir()
2395 	dir->ei = ei;  in event_subsystem_dir()
2396 	dir->tr = tr;  in event_subsystem_dir()
2397 	dir->ref_count = 1;  in event_subsystem_dir()
2398 	dir->nr_events = 1;  in event_subsystem_dir()
2399 	dir->subsystem = system;  in event_subsystem_dir()
2400 	file->system = dir;  in event_subsystem_dir()
2402 	list_add(&dir->list, &tr->systems);  in event_subsystem_dir()
2404 	return dir->ei;  in event_subsystem_dir()
2407 	kfree(dir);  in event_subsystem_dir()
2410 	if (!dir || !system)  in event_subsystem_dir()
4130 	struct trace_subsystem_dir *dir;  in event_trace_self_tests()  local
4186 	list_for_each_entry(dir, &tr->systems, list) {  in event_trace_self_tests()
4188 		system = dir->subsystem;  in event_trace_self_tests()