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[PATCH] uml: Add throttling to console driver

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This patch adds support for throttling and unthrottling input when the tty
driver can't handle it.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jeff Dike
2006-01-06 00:18:58 -08:00
committed by Linus Torvalds
parent 9159c9dfff
commit e4dcee8099
6 changed files with 63 additions and 14 deletions
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4
arch/um/include/line.h
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@@ -38,6 +38,7 @@ struct line {
struct list_head chan_list;
int valid;
int count;
int throttled;
/*This lock is actually, mostly, local to*/
spinlock_t lock;
@@ -60,6 +61,7 @@ struct line {
{ init_str : str, \
init_pri : INIT_STATIC, \
valid : 1, \
throttled : 0, \
lock : SPIN_LOCK_UNLOCKED, \
buffer : NULL, \
head : NULL, \
@@ -88,6 +90,8 @@ extern void line_flush_chars(struct tty_struct *tty);
extern int line_write_room(struct tty_struct *tty);
extern int line_ioctl(struct tty_struct *tty, struct file * file,
unsigned int cmd, unsigned long arg);
extern void line_throttle(struct tty_struct *tty);
extern void line_unthrottle(struct tty_struct *tty);
extern char *add_xterm_umid(char *base);
extern int line_setup_irq(int fd, int input, int output, struct line *line,