Input: uinput - add a schedule point in uinput_inject_events()

Large writes to uinput interface may cause rcu stalls. Let's add
cond_resched() to the loop to avoid this.

Reviewed-by: Paul E. McKenney <paulmck@linux.ibm.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c
index eb14ddf..8ec483e 100644 (file)
--- a/drivers/input/misc/uinput.c
+++ b/drivers/input/misc/uinput.c
@@ -598,6 +598,7 @@ static ssize_t uinput_inject_events(struct uinput_device *udev,
 
                input_event(udev->dev, ev.type, ev.code, ev.value);
                bytes += input_event_size();
+               cond_resched();
        }
 
        return bytes;