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

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Message-ID: <20201130111015.74h3ratcegf6xlw5@steredhat>
Date:   Mon, 30 Nov 2020 12:10:15 +0100
From:   Stefano Garzarella <sgarzare@...hat.com>
To:     Jason Wang <jasowang@...hat.com>
Cc:     virtualization@...ts.linux-foundation.org,
        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 Mon, Nov 30, 2020 at 11:04:49AM +0800, Jason Wang wrote:
>
>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.
>

Okay, I'll keep this two includes and check better the others.

Thanks,
Stefano