1.. SPDX-License-Identifier: GPL-2.0 2 3========== 4TTY Buffer 5========== 6 7.. contents:: :local: 8 9Here, we document functions for taking care of tty buffer and their flipping. 10Drivers are supposed to fill the buffer by one of those functions below and 11then flip the buffer, so that the data are passed to :doc:`line discipline 12<tty_ldisc>` for further processing. 13 14Flip Buffer Management 15====================== 16 17.. kernel-doc:: drivers/tty/tty_buffer.c 18 :identifiers: tty_prepare_flip_string tty_insert_flip_string_fixed_flag 19 tty_insert_flip_string_flags __tty_insert_flip_char 20 tty_flip_buffer_push tty_ldisc_receive_buf 21 22---- 23 24Other Functions 25=============== 26 27.. kernel-doc:: drivers/tty/tty_buffer.c 28 :identifiers: tty_buffer_space_avail tty_buffer_set_limit 29 30---- 31 32Buffer Locking 33============== 34 35These are used only in special circumstances. Avoid them. 36 37.. kernel-doc:: drivers/tty/tty_buffer.c 38 :identifiers: tty_buffer_lock_exclusive tty_buffer_unlock_exclusive 39 40---- 41 42Internal Functions 43================== 44 45.. kernel-doc:: drivers/tty/tty_buffer.c 46 :internal: 47