linux-kernel - Re: kmemtrace: kbuild failed to make the new header symlink...

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Date:	Mon, 19 Jan 2009 19:28:25 +0100
From:	Sam Ravnborg <sam@...nborg.org>
To:	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Eduard - Gabriel Munteanu <eduard.munteanu@...ux360.ro>,
	Ingo Molnar <mingo@...e.hu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: kmemtrace: kbuild failed to make the new header symlink...

On Mon, Jan 19, 2009 at 02:40:29PM -0200, Arnaldo Carvalho de Melo wrote:
> Sam,
> 
> 	I just did a git pull on linux-2.6-tip, then, on a build
> directory (make O=../build/blkftrace/) with a previous build a tree
> cloned from Linus I got stuck with the messages below.
> 
> 	I could only get this to work after a make mrproper, thought I
> could mention this so that perhaps this can get detected and time be
> saved somehow.
> 
>   CC      arch/x86/mm/fault.o
> /home/acme_unencrypted/git/linux-2.6-tip/arch/x86/mm/fault.c:38:27: error: asm/kmemcheck.h: No such file or directory
> /home/acme_unencrypted/git/linux-2.6-tip/arch/x86/mm/fault.c: In function ‘do_page_fault’:
> /home/acme_unencrypted/git/linux-2.6-tip/arch/x86/mm/fault.c:614: error: implicit declaration of function ‘kmemcheck_active’
> /home/acme_unencrypted/git/linux-2.6-tip/arch/x86/mm/fault.c:615: error: implicit declaration of function ‘kmemcheck_hide’
> /home/acme_unencrypted/git/linux-2.6-tip/arch/x86/mm/fault.c:644: error: implicit declaration of function ‘kmemcheck_fault’
> 

The problem is that kmemcheck.h is located in include/asm-x86/ which is wrong.
[Checked master branch at mingo/linux-2.6-x86.git of now.
It should be located in arch/x86/include/asm

I think you see the bug due to a wrong symlink being created.

Anyway that symlink will soon be history - at least when we
have a few more archs that has moved to use arch/$ARCH/include

	Sam
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