drivers/tty/tty_buffer.c

9 #include <linux/tty.h>
22 #include "tty.h"
34  * We default to dicing tty buffer allocations to this many characters
45  * @port: tty port owning the flip buffer
64  * @port: tty port owning the flip buffer
85  * @port: tty port owning the flip buffer
114  * tty_buffer_free_all		-	free buffers used by a tty
115  * @port: tty port to free from
117  * Remove all the buffers pending on a tty whether queued with data or in the
118  * free ring. Must be called when the tty is no longer in use.
148  * tty_buffer_alloc	-	allocate a tty buffer
149  * @port: tty port
152  * Allocate a new tty buffer to hold the desired number of characters. We
191  * tty_buffer_free		-	free a tty buffer
192  * @port: tty port owning the buffer
195  * Free a tty buffer, or add it to the free list according to our internal
212  * tty_buffer_flush		-	flush full tty buffers
213  * @tty: tty to flush
221 void tty_buffer_flush(struct tty_struct *tty, struct tty_ldisc *ld)
223 	struct tty_port *port = tty->port;
241 		ld->ops->flush_buffer(tty);
248  * __tty_buffer_request_room	-	grow tty buffer if needed
249  * @port: tty port
253  * Make at least @size bytes of linear space available for the tty buffer.
342  * @port: tty port
387 		count = ld->ops->receive_buf2(ld->tty, p, f, count);
389 		count = min_t(size_t, count, ld->tty->receive_room);
391 			ld->ops->receive_buf(ld->tty, p, f, count);
453  * @work: tty structure passed from work queue.
458  * The receive_buf() method is single threaded for each tty instance.
521  * @port: tty port to push
539  * tty_insert_flip_string_and_push_buffer - add characters to the tty buffer and
541  * @port: tty port
570  * tty_buffer_init		-	prepare a tty buffer structure
571  * @port: tty port to initialise
573  * Set up the initial state of the buffer management for a tty device. Must be
574  * called before the other tty buffer functions are used.
592  * tty_buffer_set_limit		-	change the tty buffer memory limit
593  * @port: tty port to change
596  * Change the tty buffer memory limit.
598  * Must be called before the other tty buffer functions are used.