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 <[email protected]> --- drivers/char/virtio_console.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index b74d097..be0a8e4 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -1350,6 +1350,10 @@ 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 */ + if (port->async_queue && port->guest_connected) + kill_fasync(&port->async_queue, SIGIO, POLL_IN); + if (is_console_port(port) && hvc_poll(port->cons.hvc)) hvc_kick(); } -- 1.7.2.2 _______________________________________________ Virtualization mailing list [email protected] https://lists.linux-foundation.org/mailman/listinfo/virtualization
