linux-kernel - Re: [PATCH] ARM: uaccess: Add missing include for set_thread

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Message-ID: <CAJcbSZEiHW=yH+ATvLq=am4nbVdhbqAxkH-+jEymhNkN+Pkb=A@mail.gmail.com>
Date:   Tue, 19 Sep 2017 07:32:15 -0700
From:   Thomas Garnier <thgarnie@...gle.com>
To:     Jonathan Liu <net147@...il.com>
Cc:     Russell King <linux@...linux.org.uk>,
        Thomas Gleixner <tglx@...utronix.de>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ARM: uaccess: Add missing include for set_thread_flag

On Tue, Sep 19, 2017 at 4:50 AM, Jonathan Liu <net147@...il.com> wrote:
> Fixes "implicit declaration of function" compile error for out-of-tree
> kernel modules including asm/uaccess.h.

I failed to reproduce this issue by creating an out of tree module
with a separate file (with only uaccess.h). Are you using a special
config?

Looking at the headers on uaccess.h. You get thread_info through:

 asm/domain.h -> asm/thread_info.h

>
> Fixes: 73ac5d6a2b6a ("arm/syscalls: Check address limit on user-mode return")
> Signed-off-by: Jonathan Liu <net147@...il.com>
> ---
>  arch/arm/include/asm/uaccess.h | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h
> index 87936dd5d151..13d1877ffb75 100644
> --- a/arch/arm/include/asm/uaccess.h
> +++ b/arch/arm/include/asm/uaccess.h
> @@ -17,6 +17,7 @@
>  #include <asm/unified.h>
>  #include <asm/compiler.h>
>
> +#include <linux/thread_info.h>
>  #include <asm/extable.h>
>
>  /*
> --
> 2.13.2
>



-- 
Thomas