summaryrefslogtreecommitdiff
path: root/include/linux/tty.h
diff options
context:
space:
mode:
authorPeter Hurley <peter@hurleysoftware.com>2013-06-15 15:28:28 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-06-17 23:55:11 +0400
commitf6c8dbe6e50c6e5121d7b6644718207daa008221 (patch)
treef7200d98ecaa899fb2c83d6b58b88a20b302f936 /include/linux/tty.h
parenta630fbfbb1beeffc5bbe542a7986bf2068874633 (diff)
downloadlinux-f6c8dbe6e50c6e5121d7b6644718207daa008221.tar.xz
n_tty: Encapsulate minimum_to_wake within N_TTY
minimum_to_wake is unique to N_TTY processing, and belongs in per-ldisc data. Add the ldisc method, ldisc_ops::fasync(), to notify line disciplines when signal-driven I/O is enabled or disabled. When enabled for N_TTY (by fcntl(F_SETFL, O_ASYNC)), blocking reader/polls will be woken for any readable input. When disabled, blocking reader/polls are not woken until the read buffer is full. Canonical mode (L_ICANON(tty), n_tty_data::icanon) is not affected by the minimum_to_wake setting. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/tty.h')
-rw-r--r--include/linux/tty.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 82ab69bc9b79..01ac30efd6a6 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -272,7 +272,6 @@ struct tty_struct {
#define N_TTY_BUF_SIZE 4096
unsigned char closing:1;
- unsigned short minimum_to_wake;
unsigned char *write_buf;
int write_cnt;
/* If the tty has a pending do_SAK, queue it here - akpm */