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authorJeff Dike <jdike@addtoit.com>2006-01-06 00:18:58 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-06 08:33:46 -0800
commite4dcee8099802c71437a15b940f66106d9f88b2f (patch)
treeb4831639d38369fce2e20fd40730425ca702102c /arch/um/drivers/chan_kern.c
parent9159c9dfffe1746d58b015ceaa3b7b8e99ee9d5c (diff)
[PATCH] uml: Add throttling to console driver
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>
Diffstat (limited to 'arch/um/drivers/chan_kern.c')
-rw-r--r--arch/um/drivers/chan_kern.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index 36df55ad64c2..cd13b91b9ff6 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -312,6 +312,32 @@ void close_chan(struct list_head *chans, int delay_free_irq)
}
}
+void deactivate_chan(struct list_head *chans, int irq)
+{
+ struct list_head *ele;
+
+ struct chan *chan;
+ list_for_each(ele, chans) {
+ chan = list_entry(ele, struct chan, list);
+
+ if(chan->enabled && chan->input)
+ deactivate_fd(chan->fd, irq);
+ }
+}
+
+void reactivate_chan(struct list_head *chans, int irq)
+{
+ struct list_head *ele;
+ struct chan *chan;
+
+ list_for_each(ele, chans) {
+ chan = list_entry(ele, struct chan, list);
+
+ if(chan->enabled && chan->input)
+ reactivate_fd(chan->fd, irq);
+ }
+}
+
int write_chan(struct list_head *chans, const char *buf, int len,
int write_irq)
{