Re: [PATCH] vhost: Make use of the helper macro kthread_run()

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On Thu, Jan 27, 2022 at 10:08:07AM +0800, Yin Xiujiang wrote:
> Repalce kthread_create/wake_up_process() with kthread_run()
> to simplify the code.
> 
> Signed-off-by: Yin Xiujiang <yinxiujiang@xxxxxxxxxx>
> ---
>  drivers/vhost/vhost.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
> index 59edb5a1ffe2..19e9eda9fc71 100644
> --- a/drivers/vhost/vhost.c
> +++ b/drivers/vhost/vhost.c
> @@ -595,7 +595,7 @@ long vhost_dev_set_owner(struct vhost_dev *dev)
>  
>  	dev->kcov_handle = kcov_common_handle();
>  	if (dev->use_worker) {
> -		worker = kthread_create(vhost_worker, dev,
> +		worker = kthread_run(vhost_worker, dev,
>  					"vhost-%d", current->pid);
>  		if (IS_ERR(worker)) {
>  			err = PTR_ERR(worker);
> @@ -603,7 +603,6 @@ long vhost_dev_set_owner(struct vhost_dev *dev)
>  		}
>  
>  		dev->worker = worker;
> -		wake_up_process(worker); /* avoid contributing to loadavg */
>  
>  		err = vhost_attach_cgroups(dev);
>  		if (err)

I think if you do this, you need to set dev->worker earlier.

> -- 
> 2.30.0

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