linux-kernel - Re: [BUILD_FAILURE] next-20090115 - s390x

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Message-ID: <20090115121347.GE5093@osiris.boeblingen.de.ibm.com>
Date:	Thu, 15 Jan 2009 13:13:47 +0100
From:	Heiko Carstens <heiko.carstens@...ibm.com>
To:	Pekka Enberg <penberg@...helsinki.fi>
Cc:	Catalin Marinas <catalin.marinas@....com>,
	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	linux-s390@...r.kernel.org, schwidefsky@...ibm.com
Subject: Re: [BUILD_FAILURE] next-20090115 - s390x - mm/kmemleak.c

On Thu, Jan 15, 2009 at 02:08:00PM +0200, Pekka Enberg wrote:
> On Thu, 2009-01-15 at 11:55 +0000, Catalin Marinas wrote:
> > On Thu, 2009-01-15 at 12:20 +0100, Heiko Carstens wrote:
> > > On Thu, Jan 15, 2009 at 04:05:04PM +0530, Kamalesh Babulal wrote:
> > > > Hi Stephen,
> > > > 
> > > > 	next-20090115 allyesconfig build fails on s390x
> > > > 
> > > > mm/built-in.o: In function `kmemleak_scan':
> > > > mm/kmemleak.c:977: undefined reference to `_sdata'
> > > > make: *** [.tmp_vmlinux1] Error 1
> > > 
> > > A lot of architectures don't have _sdata definined in their linker scripts.
> > > On s390 _sdata would be the same as _etext. But that is not necessarily true
> > > for all architectures.
> > 
> > Kmemleak has only been tested on ARM and x86. I can add patches for the
> > other architectures so that the compilation is fine but can't really run
> > such kernels.
> 
> Yeah, but you could just depend on X86 || ARM in Kconfig, no?

CONFIG_HAVE_KMEMLEAK_SUPPORT ?
Is there actually more arch specific that needs to be done?
Haven't checked yet.
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