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

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Date:	Wed, 12 Nov 2008 06:18:26 -0500
From:	"Mike Frysinger" <vapier.adi@...il.com>
To:	"Geert Uytterhoeven" <geert@...ux-m68k.org>
Cc:	"Stephen Rothwell" <sfr@...b.auug.org.au>,
	"Christoph Lameter" <cl@...ux-foundation.org>,
	"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'

On Wed, Nov 12, 2008 at 02:59, Geert Uytterhoeven wrote:
> On Fri, 7 Nov 2008, Stephen Rothwell wrote:
>> On Thu, 6 Nov 2008 13:15:07 -0600 (CST) Christoph Lameter 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'
>
> And m68k defconfig (http://kisskb.ellerman.id.au/kisskb/buildresult/54216/):
>
> | : undefined reference to `__per_cpu_start'
> | : undefined reference to `__per_cpu_end'

i already posted a patch:
http://lkml.org/lkml/2008/11/8/145
-mike
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