linux-kernel - Re: next-20081106: undefined reference to `__per_cpu

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Message-Id: <20081107162114.2a41c623.sfr@canb.auug.org.au>
Date:	Fri, 7 Nov 2008 16:21:14 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Christoph Lameter <cl@...ux-foundation.org>
Cc:	Alexey Dobriyan <adobriyan@...il.com>, linux-next@...r.kernel.org,
	linux-kernel@...r.kernel.org, rusty@...tcorp.com.au,
	Haavard Skinnemoen <hskinnemoen@...el.com>
Subject: Re: next-20081106: undefined reference to `__per_cpu_start'

Hi Christoph,

On Thu, 6 Nov 2008 13:15:07 -0600 (CST) Christoph Lameter <cl@...ux-foundation.org> wrote:
>
> On Thu, 6 Nov 2008, Alexey Dobriyan wrote:
> 
> > On blackfin-BF526-EZBRD and other blackfins:
> >
> >   LD      .tmp_vmlinux1
> > mm/built-in.o: In function `cpu_alloc_init':
> > (.init.text+0x1486): undefined reference to `__per_cpu_start'
> > mm/built-in.o: In function `cpu_alloc_init':
> > (.init.text+0x148c): undefined reference to `__per_cpu_start'
> > mm/built-in.o: In function `cpu_alloc_init':
> > (.init.text+0x1492): undefined reference to `__per_cpu_end'
> > mm/built-in.o: In function `cpu_alloc_init':
> > (.init.text+0x1496): undefined reference to `__per_cpu_end'
> 
> Any contigencies for __per_cpu_start/end in your blackfin vmlinux.lds.h?
> That is where these symbols are defined
> 
> Or did you use generic percpu support and set
> CONFIG_HAVE_ZERO_BASED_PER_CPU?

Also a avr32 allnoconfig
(http://kisskb.ellerman.id.au/kisskb/buildresult/53233/) gets:

backing-dev.c:(.init.text+0xc4c): undefined reference to `__per_cpu_start'
backing-dev.c:(.init.text+0xc50): undefined reference to `__per_cpu_end'

and avr32 defconfig
(http://kisskb.ellerman.id.au/kisskb/buildresult/53225/) gets:

vmstat.c:(.init.text+0xff0): undefined reference to `__per_cpu_start'
vmstat.c:(.init.text+0xff4): undefined reference to `__per_cpu_end'

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
http://www.canb.auug.org.au/~sfr/

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