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

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Message-ID: <Pine.LNX.4.64.0811061310350.6009@quilx.com>
Date:	Thu, 6 Nov 2008 13:15:07 -0600 (CST)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	Alexey Dobriyan <adobriyan@...il.com>
cc:	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	rusty@...tcorp.com.au
Subject: Re: next-20081106: undefined reference to `__per_cpu_start'

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?
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