linux-kernel - Re: [PATCH 2/2] tools/virtio: Add hints when module is not installed

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Message-ID: <20230927111904-mutt-send-email-mst@kernel.org>
Date:   Wed, 27 Sep 2023 11:20:05 -0400
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     liming.wu@...uarmicro.com
Cc:     Jason Wang <jasowang@...hat.com>, kvm@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, 398776277@...com
Subject: Re: [PATCH 2/2] tools/virtio: Add hints when module is not installed

On Tue, Sep 26, 2023 at 01:00:20PM +0800, liming.wu@...uarmicro.com wrote:
> From: Liming Wu <liming.wu@...uarmicro.com>
> 
> Need to insmod vhost_test.ko before run virtio_test.
> Give some hints to users.
> 
> Signed-off-by: Liming Wu <liming.wu@...uarmicro.com>
> ---
>  tools/virtio/virtio_test.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/tools/virtio/virtio_test.c b/tools/virtio/virtio_test.c
> index 028f54e6854a..ce2c4d93d735 100644
> --- a/tools/virtio/virtio_test.c
> +++ b/tools/virtio/virtio_test.c
> @@ -135,6 +135,10 @@ static void vdev_info_init(struct vdev_info* dev, unsigned long long features)
>  	dev->buf = malloc(dev->buf_size);
>  	assert(dev->buf);
>  	dev->control = open("/dev/vhost-test", O_RDWR);
> +
> +	if (dev->control < 0)
> +		fprintf(stderr, "Install vhost_test module" \
> +		"(./vhost_test/vhost_test.ko) firstly\n");

Thanks!

things to improve:

firstly -> first
add space before (
End sentence with a dot
align "" on the two lines

>  	assert(dev->control >= 0);
>  	r = ioctl(dev->control, VHOST_SET_OWNER, NULL);
>  	assert(r >= 0);
> -- 
> 2.34.1