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SubjectRe: [PATCH] Input: evdev - add a schedule point in evdev_write()
On Thu, Oct 04, 2018 at 05:53:59PM -0700, Dmitry Torokhov wrote:
> Large writes to evdev interface may cause rcu stalls. Let's add
> cond_resched() to the loop to avoid this.
>
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Reviewed-by: Paul E. McKenney <paulmck@linux.ibm.com>

> ---
> drivers/input/evdev.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
> index 370206f987f9..f48369d6f3a0 100644
> --- a/drivers/input/evdev.c
> +++ b/drivers/input/evdev.c
> @@ -564,6 +564,7 @@ static ssize_t evdev_write(struct file *file, const char __user *buffer,
>
> input_inject_event(&evdev->handle,
> event.type, event.code, event.value);
> + cond_resched();
> }
>
> out:
> --
> 2.19.0.605.g01d371f741-goog
>
>
> --
> Dmitry
>

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