640 static void __get_system_dir(struct trace_subsystem_dir *dir)  in __get_system_dir()  argument
642 	WARN_ON_ONCE(dir->ref_count == 0);  in __get_system_dir()
643 	dir->ref_count++;  in __get_system_dir()
644 	__get_system(dir->subsystem);  in __get_system_dir()
647 static void __put_system_dir(struct trace_subsystem_dir *dir)  in __put_system_dir()  argument
649 	WARN_ON_ONCE(dir->ref_count == 0);  in __put_system_dir()
651 	WARN_ON_ONCE(system_refcount(dir->subsystem) == 1 && dir->ref_count != 1);  in __put_system_dir()
653 	__put_system(dir->subsystem);  in __put_system_dir()
654 	if (!--dir->ref_count)  in __put_system_dir()
655 		kfree(dir);  in __put_system_dir()
658 static void put_system(struct trace_subsystem_dir *dir)  in put_system()  argument
661 	__put_system_dir(dir);  in put_system()
665 static void remove_subsystem(struct trace_subsystem_dir *dir)  in remove_subsystem()  argument
667 	if (!dir)  in remove_subsystem()
670 	if (!--dir->nr_events) {  in remove_subsystem()
671 		tracefs_remove_recursive(dir->entry);  in remove_subsystem()
672 		list_del(&dir->list);  in remove_subsystem()
673 		__put_system_dir(dir);  in remove_subsystem()
679 	struct dentry *dir = file->dir;  in remove_event_file_dir()  local
682 	if (dir) {  in remove_event_file_dir()
683 		spin_lock(&dir->d_lock);	/* probably unneeded */  in remove_event_file_dir()
684 		list_for_each_entry(child, &dir->d_subdirs, d_child) {  in remove_event_file_dir()
688 		spin_unlock(&dir->d_lock);  in remove_event_file_dir()
690 		tracefs_remove_recursive(dir);  in remove_event_file_dir()
1072 	struct trace_subsystem_dir *dir = filp->private_data;  in system_enable_read()  local
1073 	struct event_subsystem *system = dir->subsystem;  in system_enable_read()
1076 	struct trace_array *tr = dir->tr;  in system_enable_read()
1117 	struct trace_subsystem_dir *dir = filp->private_data;  in system_enable_write()  local
1118 	struct event_subsystem *system = dir->subsystem;  in system_enable_write()
1141 	ret = __ftrace_set_clr_event(dir->tr, NULL, name, NULL, val);  in system_enable_write()
1376 	struct trace_subsystem_dir *dir = NULL; /* Initialize for gcc */  in subsystem_open()  local
1387 		list_for_each_entry(dir, &tr->systems, list) {  in subsystem_open()
1388 			if (dir == inode->i_private) {  in subsystem_open()
1390 				if (dir->nr_events) {  in subsystem_open()
1391 					__get_system_dir(dir);  in subsystem_open()
1392 					system = dir->subsystem;  in subsystem_open()
1406 	WARN_ON(!dir);  in subsystem_open()
1410 		put_system(dir);  in subsystem_open()
1417 		put_system(dir);  in subsystem_open()
1425 	struct trace_subsystem_dir *dir;  in system_tr_open()  local
1436 	dir = kzalloc(sizeof(*dir), GFP_KERNEL);  in system_tr_open()
1437 	if (!dir) {  in system_tr_open()
1442 	dir->tr = tr;  in system_tr_open()
1447 		kfree(dir);  in system_tr_open()
1451 	filp->private_data = dir;  in system_tr_open()
1458 	struct trace_subsystem_dir *dir = file->private_data;  in subsystem_release()  local
1460 	trace_array_put(dir->tr);  in subsystem_release()
1467 	if (dir->subsystem)  in subsystem_release()
1468 		put_system(dir);  in subsystem_release()
1470 		kfree(dir);  in subsystem_release()
1479 	struct trace_subsystem_dir *dir = filp->private_data;  in subsystem_filter_read()  local
1480 	struct event_subsystem *system = dir->subsystem;  in subsystem_filter_read()
1506 	struct trace_subsystem_dir *dir = filp->private_data;  in subsystem_filter_write()  local
1523 	err = apply_subsystem_event_filter(dir, buf);  in subsystem_filter_write()
1984 	struct trace_subsystem_dir *dir;  in event_subsystem_dir()  local
1989 	list_for_each_entry(dir, &tr->systems, list) {  in event_subsystem_dir()
1990 		system = dir->subsystem;  in event_subsystem_dir()
1992 			dir->nr_events++;  in event_subsystem_dir()
1993 			file->system = dir;  in event_subsystem_dir()
1994 			return dir->entry;  in event_subsystem_dir()
2007 	dir = kmalloc(sizeof(*dir), GFP_KERNEL);  in event_subsystem_dir()
2008 	if (!dir)  in event_subsystem_dir()
2018 	dir->entry = tracefs_create_dir(name, parent);  in event_subsystem_dir()
2019 	if (!dir->entry) {  in event_subsystem_dir()
2025 	dir->tr = tr;  in event_subsystem_dir()
2026 	dir->ref_count = 1;  in event_subsystem_dir()
2027 	dir->nr_events = 1;  in event_subsystem_dir()
2028 	dir->subsystem = system;  in event_subsystem_dir()
2029 	file->system = dir;  in event_subsystem_dir()
2031 	entry = tracefs_create_file("filter", 0644, dir->entry, dir,  in event_subsystem_dir()
2039 	trace_create_file("enable", 0644, dir->entry, dir,  in event_subsystem_dir()
2042 	list_add(&dir->list, &tr->systems);  in event_subsystem_dir()
2044 	return dir->entry;  in event_subsystem_dir()
2047 	kfree(dir);  in event_subsystem_dir()
2050 	if (!dir || !system)  in event_subsystem_dir()
2077 	file->dir = tracefs_create_dir(name, d_events);  in event_create_dir()
2078 	if (!file->dir) {  in event_create_dir()
2084 		trace_create_file("enable", 0644, file->dir, file,  in event_create_dir()
2089 		trace_create_file("id", 0444, file->dir,  in event_create_dir()
2107 	trace_create_file("filter", 0644, file->dir, file,  in event_create_dir()
2115 		trace_create_file("trigger", 0644, file->dir, file,  in event_create_dir()
2118 	trace_create_file("format", 0444, file->dir, call,  in event_create_dir()
3253 	struct trace_subsystem_dir *dir;  in event_trace_self_tests()  local
3309 	list_for_each_entry(dir, &tr->systems, list) {  in event_trace_self_tests()
3311 		system = dir->subsystem;  in event_trace_self_tests()