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

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Message-ID: <CAK7LNATfK2pFnO2YV5zMLMxJGYyaj+f8w-k4K8xaoGbJ2Bd5eQ@mail.gmail.com>
Date:   Wed, 13 Nov 2019 16:53:40 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Xiao Yang <ice_yangxiao@....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 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.




> Best Regards,
>
> Xiao Yang
>
>


-- 
Best Regards
Masahiro Yamada