55 void tty_buffer_lock_exclusive(struct tty_port *port)  in tty_buffer_lock_exclusive()  argument
57 	struct tty_bufhead *buf = &port->buf;  in tty_buffer_lock_exclusive()
64 void tty_buffer_unlock_exclusive(struct tty_port *port)  in tty_buffer_unlock_exclusive()  argument
66 	struct tty_bufhead *buf = &port->buf;  in tty_buffer_unlock_exclusive()
90 int tty_buffer_space_avail(struct tty_port *port)  in tty_buffer_space_avail()  argument
92 	int space = port->buf.mem_limit - atomic_read(&port->buf.mem_used);  in tty_buffer_space_avail()
115 void tty_buffer_free_all(struct tty_port *port)  in tty_buffer_free_all()  argument
117 	struct tty_bufhead *buf = &port->buf;  in tty_buffer_free_all()
149 static struct tty_buffer *tty_buffer_alloc(struct tty_port *port, size_t size)  in tty_buffer_alloc()  argument
158 		free = llist_del_first(&port->buf.free);  in tty_buffer_alloc()
167 	if (atomic_read(&port->buf.mem_used) > port->buf.mem_limit)  in tty_buffer_alloc()
175 	atomic_add(size, &port->buf.mem_used);  in tty_buffer_alloc()
188 static void tty_buffer_free(struct tty_port *port, struct tty_buffer *b)  in tty_buffer_free()  argument
190 	struct tty_bufhead *buf = &port->buf;  in tty_buffer_free()
215 	struct tty_port *port = tty->port;  in tty_buffer_flush()  local
216 	struct tty_bufhead *buf = &port->buf;  in tty_buffer_flush()
226 		tty_buffer_free(port, buf->head);  in tty_buffer_flush()
251 static int __tty_buffer_request_room(struct tty_port *port, size_t size,  in __tty_buffer_request_room()  argument
254 	struct tty_bufhead *buf = &port->buf;  in __tty_buffer_request_room()
267 		n = tty_buffer_alloc(port, size);  in __tty_buffer_request_room()
288 int tty_buffer_request_room(struct tty_port *port, size_t size)  in tty_buffer_request_room()  argument
290 	return __tty_buffer_request_room(port, size, 0);  in tty_buffer_request_room()
305 int tty_insert_flip_string_fixed_flag(struct tty_port *port,  in tty_insert_flip_string_fixed_flag()  argument
312 		int space = __tty_buffer_request_room(port, goal, flags);  in tty_insert_flip_string_fixed_flag()
313 		struct tty_buffer *tb = port->buf.tail;  in tty_insert_flip_string_fixed_flag()
341 int tty_insert_flip_string_flags(struct tty_port *port,  in tty_insert_flip_string_flags()  argument
347 		int space = tty_buffer_request_room(port, goal);  in tty_insert_flip_string_flags()
348 		struct tty_buffer *tb = port->buf.tail;  in tty_insert_flip_string_flags()
373 void tty_schedule_flip(struct tty_port *port)  in tty_schedule_flip()  argument
375 	struct tty_bufhead *buf = &port->buf;  in tty_schedule_flip()
398 int tty_prepare_flip_string(struct tty_port *port, unsigned char **chars,  in tty_prepare_flip_string()  argument
401 	int space = __tty_buffer_request_room(port, size, TTYB_NORMAL);  in tty_prepare_flip_string()
403 		struct tty_buffer *tb = port->buf.tail;  in tty_prepare_flip_string()
449 	struct tty_port *port = container_of(work, struct tty_port, buf.work);  in flush_to_ldisc()  local
450 	struct tty_bufhead *buf = &port->buf;  in flush_to_ldisc()
454 	tty = READ_ONCE(port->itty);  in flush_to_ldisc()
486 			tty_buffer_free(port, head);  in flush_to_ldisc()
512 void tty_flip_buffer_push(struct tty_port *port)  in tty_flip_buffer_push()  argument
514 	tty_schedule_flip(port);  in tty_flip_buffer_push()
526 void tty_buffer_init(struct tty_port *port)  in tty_buffer_init()  argument
528 	struct tty_bufhead *buf = &port->buf;  in tty_buffer_init()
549 int tty_buffer_set_limit(struct tty_port *port, int limit)  in tty_buffer_set_limit()  argument
553 	port->buf.mem_limit = limit;  in tty_buffer_set_limit()
559 void tty_buffer_set_lock_subclass(struct tty_port *port)  in tty_buffer_set_lock_subclass()  argument
561 	lockdep_set_subclass(&port->buf.lock, TTY_LOCK_SLAVE);  in tty_buffer_set_lock_subclass()
564 bool tty_buffer_restart_work(struct tty_port *port)  in tty_buffer_restart_work()  argument
566 	return queue_work(system_unbound_wq, &port->buf.work);  in tty_buffer_restart_work()
569 bool tty_buffer_cancel_work(struct tty_port *port)  in tty_buffer_cancel_work()  argument
571 	return cancel_work_sync(&port->buf.work);  in tty_buffer_cancel_work()
574 void tty_buffer_flush_work(struct tty_port *port)  in tty_buffer_flush_work()  argument
576 	flush_work(&port->buf.work);  in tty_buffer_flush_work()