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authorPeter Hurley <peter@hurleysoftware.com>2013-11-22 12:09:55 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-12-08 16:57:38 -0800
commit4d18e6eff81e1d4d81d0942d5b7e96904b3b32df (patch)
treea6c66c84189a50bff8b6b05a7187a8cda4b67cfc /include/linux/tty_flip.h
parent82f91fe092b6eacd82e976b8955443f9fd97d07e (diff)
downloadlinux-linaro-stable-4d18e6eff81e1d4d81d0942d5b7e96904b3b32df.tar.gz
tty: Enable configurable tty flip buffer limit
Allow driver to configure its maximum flip buffer memory consumption/limit. This is necessary for very-high speed line rates (in excess of 10MB/sec) because the flip buffers can be saturated before the line discipline has a chance to throttle the input. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/tty_flip.h')
-rw-r--r--include/linux/tty_flip.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/tty_flip.h b/include/linux/tty_flip.h
index 21ddd7d9ea1f..2da8bc2a5486 100644
--- a/include/linux/tty_flip.h
+++ b/include/linux/tty_flip.h
@@ -1,6 +1,7 @@
#ifndef _LINUX_TTY_FLIP_H
#define _LINUX_TTY_FLIP_H
+extern int tty_buffer_set_limit(struct tty_port *port, int limit);
extern int tty_buffer_space_avail(struct tty_port *port);
extern int tty_buffer_request_room(struct tty_port *port, size_t size);
extern int tty_insert_flip_string_flags(struct tty_port *port,