linux-kernel - Re: [PATCH v2 02/17] vdpa_sim: remove unnecessary headers inclusion

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Date:   Mon, 30 Nov 2020 11:04:49 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     Stefano Garzarella <sgarzare@...hat.com>,
        virtualization@...ts.linux-foundation.org
Cc:     Stefan Hajnoczi <stefanha@...hat.com>,
        linux-kernel@...r.kernel.org, Laurent Vivier <lvivier@...hat.com>,
        Max Gurtovoy <mgurtovoy@...dia.com>,
        "Michael S. Tsirkin" <mst@...hat.com>, Eli Cohen <elic@...dia.com>
Subject: Re: [PATCH v2 02/17] vdpa_sim: remove unnecessary headers inclusion


On 2020/11/26 下午10:49, Stefano Garzarella wrote:
> Some headers are not necessary, so let's remove them to do
> some cleaning.
>
> Signed-off-by: Stefano Garzarella <sgarzare@...hat.com>
> ---
>   drivers/vdpa/vdpa_sim/vdpa_sim.c | 13 -------------
>   1 file changed, 13 deletions(-)
>
> diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c
> index 6a90fdb9cbfc..c6eaf62df8ec 100644
> --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c
> +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c
> @@ -7,24 +7,11 @@
>    *
>    */
>   
> -#include <linux/init.h>
>   #include <linux/module.h>
> -#include <linux/device.h>


I think the rule is to make sure e.g the structure definition can be via 
direct inclusion. E.g struct device {} is defined in this file.


> -#include <linux/kernel.h>
> -#include <linux/fs.h>
> -#include <linux/poll.h>
> -#include <linux/slab.h>
> -#include <linux/sched.h>
> -#include <linux/wait.h>
> -#include <linux/uuid.h>
> -#include <linux/iommu.h>
>   #include <linux/dma-map-ops.h>
> -#include <linux/sysfs.h>
> -#include <linux/file.h>
>   #include <linux/etherdevice.h>
>   #include <linux/vringh.h>
>   #include <linux/vdpa.h>
> -#include <linux/virtio_byteorder.h>


And the  __cpu_to_virtio16 is defined in this file.

Thanks


>   #include <linux/vhost_iotlb.h>
>   #include <uapi/linux/virtio_config.h>
>   #include <uapi/linux/virtio_net.h>