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

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Date:	Fri, 7 Nov 2008 12:32:53 -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 Fri, 7 Nov 2008, Alexey Dobriyan wrote:

> --- a/include/linux/percpu.h
> +++ b/include/linux/percpu.h
> @@ -51,6 +51,8 @@
>  #define DEFINE_PER_CPU_FIRST(type, name)				\
>  	DEFINE_PER_CPU(type, name)
>
> +#define PERCPU_AREA_SIZE 0
> +
>  #endif /* !CONFIG_SMP */
>
>  #define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(per_cpu__##var)

No we need a percpu allocation area even on UP.

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