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virtio: console: Send SIGIO on new data arrival on ports
author
Amit Shah
<amit.shah@redhat.com>
Thu, 2 Sep 2010 13:17:53 +0000
(18:47 +0530)
committer
Rusty Russell
<rusty@rustcorp.com.au>
Thu, 21 Oct 2010 07:14:04 +0000
(17:44 +1030)
Send a SIGIO signal when new data arrives on a port. This is sent only
when the process has requested for the signal to be sent using fcntl().
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
drivers/char/virtio_console.c
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diff --git
a/drivers/char/virtio_console.c
b/drivers/char/virtio_console.c
index
c4ca436
..
6d5c579
100644
(file)
--- a/
drivers/char/virtio_console.c
+++ b/
drivers/char/virtio_console.c
@@
-1483,6
+1483,9
@@
static void in_intr(struct virtqueue *vq)
wake_up_interruptible(&port->waitqueue);
+ /* Send a SIGIO indicating new data in case the process asked for it */
+ send_sigio_to_port(port);
+
if (is_console_port(port) && hvc_poll(port->cons.hvc))
hvc_kick();
}