linux-kernel - Re: Question about "asm/rwonce.h: No such file or directory"

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Message-ID: <50602386-68b1-be38-a022-0bcf9df6a54e@163.com>
Date:   Wed, 13 Nov 2019 16:35:41 +0800
From:   Xiao Yang <ice_yangxiao@....com>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     Daniel Borkmann <daniel@...earbox.net>,
        Will Deacon <will@...nel.org>,
        linux-arch <linux-arch@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Alexei Starovoitov <ast@...nel.org>
Subject: Re: Question about "asm/rwonce.h: No such file or directory"

On 11/13/19 3:53 PM, Masahiro Yamada wrote:
> On Wed, Nov 13, 2019 at 4:17 PM Xiao Yang <ice_yangxiao@....com> wrote:
>> On 11/13/19 2:57 PM, Masahiro Yamada wrote:
>>> Sorry, I really do not understand what you are doing.
>>>
>>> include/linux/compiler.h is only for kernel-space.
>>> Shrug if a user-land program includes it.
>> Hi Masahiro,
>>
>> For building tools/bpf, it is good to fix the compiler error by Daniel's
>> patch(i.e. use linux/filter from linux header).
>>
>> linux/compiler.h may be used by other code in kernel.  Is it possible to
>> trigger the same error when the other code
>>
>> including linux/compiler.h is built? Is this kind of code able to find
>> the location of <asm/rwonce.h>?
>
> <asm/rwonce.h> is also kernel-only header.
>
> The kernel code can find <asm/rwonce.h>, but user-land code cannot.

Hi Masahiro,

Sorry, I am not familar with it.

Thanks a lot for your explanation and I have seen the LINUXINCLUDE 
variable in Makefile.

I will try to send a patch as Daniel suggested.

Best Regards,

Xiao Yang

>
>
>
>
>> Best Regards,
>>
>> Xiao Yang
>>
>>
>