[PATCH] arm64: mm: Remove unused header file

[PATCH] arm64: mm: Remove unused header file

[Shaokun Zhang]

Many header files are never used, let's remove them directly.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
---
 arch/arm64/mm/mmap.c | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)

diff --git a/arch/arm64/mm/mmap.c b/arch/arm64/mm/mmap.c
index 07937b49cb88..c66b3878712c 100644
--- a/arch/arm64/mm/mmap.c
+++ b/arch/arm64/mm/mmap.c
@@ -5,20 +5,10 @@
  * Copyright (C) 2012 ARM Ltd.
  */
 
-#include <linux/elf.h>
-#include <linux/fs.h>
 #include <linux/memblock.h>
-#include <linux/mm.h>
-#include <linux/mman.h>
-#include <linux/export.h>
-#include <linux/shm.h>
-#include <linux/sched/signal.h>
-#include <linux/sched/mm.h>
-#include <linux/io.h>
-#include <linux/personality.h>
-#include <linux/random.h>
+#include <linux/types.h>
 
-#include <asm/cputype.h>
+#include <asm/page.h>
 
 /*
  * You really shouldn't be using read() or write() on /dev/mem.  This might go
-- 
2.7.4


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Re: [PATCH] arm64: mm: Remove unused header file

[Will Deacon]

On Tue, Jan 26, 2021 at 08:24:44PM +0800, Shaokun Zhang wrote:
> Many header files are never used, let's remove them directly.
> 
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Will Deacon <will@kernel.org>
> Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
> ---
>  arch/arm64/mm/mmap.c | 14 ++------------
>  1 file changed, 2 insertions(+), 12 deletions(-)
> 
> diff --git a/arch/arm64/mm/mmap.c b/arch/arm64/mm/mmap.c
> index 07937b49cb88..c66b3878712c 100644
> --- a/arch/arm64/mm/mmap.c
> +++ b/arch/arm64/mm/mmap.c
> @@ -5,20 +5,10 @@
>   * Copyright (C) 2012 ARM Ltd.
>   */
>  
> -#include <linux/elf.h>
> -#include <linux/fs.h>
>  #include <linux/memblock.h>
> -#include <linux/mm.h>
> -#include <linux/mman.h>
> -#include <linux/export.h>
> -#include <linux/shm.h>
> -#include <linux/sched/signal.h>
> -#include <linux/sched/mm.h>
> -#include <linux/io.h>
> -#include <linux/personality.h>
> -#include <linux/random.h>
> +#include <linux/types.h>
>  
> -#include <asm/cputype.h>
> +#include <asm/page.h>

How did you determine that these are safe to remove?

Will

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Re: [PATCH] arm64: mm: Remove unused header file

[Shaokun Zhang]

Hi Will,

在 2021/1/26 20:39, Will Deacon 写道:
> On Tue, Jan 26, 2021 at 08:24:44PM +0800, Shaokun Zhang wrote:
>> Many header files are never used, let's remove them directly.
>>
>> Cc: Catalin Marinas <catalin.marinas@arm.com>
>> Cc: Will Deacon <will@kernel.org>
>> Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
>> ---
>>  arch/arm64/mm/mmap.c | 14 ++------------
>>  1 file changed, 2 insertions(+), 12 deletions(-)
>>
>> diff --git a/arch/arm64/mm/mmap.c b/arch/arm64/mm/mmap.c
>> index 07937b49cb88..c66b3878712c 100644
>> --- a/arch/arm64/mm/mmap.c
>> +++ b/arch/arm64/mm/mmap.c
>> @@ -5,20 +5,10 @@
>>   * Copyright (C) 2012 ARM Ltd.
>>   */
>>  
>> -#include <linux/elf.h>
>> -#include <linux/fs.h>
>>  #include <linux/memblock.h>
>> -#include <linux/mm.h>
>> -#include <linux/mman.h>
>> -#include <linux/export.h>
>> -#include <linux/shm.h>
>> -#include <linux/sched/signal.h>
>> -#include <linux/sched/mm.h>
>> -#include <linux/io.h>
>> -#include <linux/personality.h>
>> -#include <linux/random.h>
>> +#include <linux/types.h>
>>  
>> -#include <asm/cputype.h>
>> +#include <asm/page.h>
> 
> How did you determine that these are safe to remove?
> 

To be honest, it is done by observation when I dig my devmem failure.
I checked this file changed much and some header files are not necessary.

I did devmem test and it worked when I changed these.
Apologies that the io.h is still needed for the previous prototype.

Thanks,
Shaokun

> Will
> .
> 

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Re: [PATCH] arm64: mm: Remove unused header file

[Will Deacon]

On Tue, 26 Jan 2021 20:24:44 +0800, Shaokun Zhang wrote:
> Many header files are never used, let's remove them directly.

Passed allnoconfig, defconfig and allmodconfig builds, so applied to
arm64 (for-next/misc), thanks!

[1/1] arm64: mm: Remove unused header file
      https://git.kernel.org/arm64/c/507d664450f8

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev

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