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1.. SPDX-License-Identifier: GPL-2.02 3==========4TTY Buffer5==========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 and11then flip the buffer, so that the data are passed to :doc:`line discipline12<tty_ldisc>` for further processing.13 14Flip Buffer Management15======================16 17.. kernel-doc:: drivers/tty/tty_buffer.c18 :identifiers: tty_prepare_flip_string19 tty_flip_buffer_push tty_ldisc_receive_buf20 21.. kernel-doc:: include/linux/tty_flip.h22 :identifiers: tty_insert_flip_string_fixed_flag tty_insert_flip_string_flags23 tty_insert_flip_char24 25----26 27Other Functions28===============29 30.. kernel-doc:: drivers/tty/tty_buffer.c31 :identifiers: tty_buffer_space_avail tty_buffer_set_limit32 33----34 35Buffer Locking36==============37 38These are used only in special circumstances. Avoid them.39 40.. kernel-doc:: drivers/tty/tty_buffer.c41 :identifiers: tty_buffer_lock_exclusive tty_buffer_unlock_exclusive42 43----44 45Internal Functions46==================47 48.. kernel-doc:: drivers/tty/tty_buffer.c49 :internal:50