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- .. SPDX-License-Identifier: GPL-2.0
- ==========
- TTY Buffer
- ==========
- .. contents:: :local:
- Here, we document functions for taking care of tty buffer and their flipping.
- Drivers are supposed to fill the buffer by one of those functions below and
- then flip the buffer, so that the data are passed to :doc:`line discipline
- <tty_ldisc>` for further processing.
- Flip Buffer Management
- ======================
- .. kernel-doc:: drivers/tty/tty_buffer.c
- :identifiers: tty_prepare_flip_string
- tty_flip_buffer_push tty_ldisc_receive_buf
- .. kernel-doc:: include/linux/tty_flip.h
- :identifiers: tty_insert_flip_string_fixed_flag tty_insert_flip_string_flags
- tty_insert_flip_char
- ----
- Other Functions
- ===============
- .. kernel-doc:: drivers/tty/tty_buffer.c
- :identifiers: tty_buffer_space_avail tty_buffer_set_limit
- ----
- Buffer Locking
- ==============
- These are used only in special circumstances. Avoid them.
- .. kernel-doc:: drivers/tty/tty_buffer.c
- :identifiers: tty_buffer_lock_exclusive tty_buffer_unlock_exclusive
- ----
- Internal Functions
- ==================
- .. kernel-doc:: drivers/tty/tty_buffer.c
- :internal:
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