Re: 2.6.23-rc2-mm1 -- drivers/dma/ioat_dca.c:177: error: implicit declaration of function ___cpu_physical_id___

From: Andi Kleen
Date: Fri Aug 10 2007 - 09:27:57 EST


On Thursday 09 August 2007 20:52:58 Andrew Morton wrote:
> On Thu, 9 Aug 2007 10:18:15 -0400
> "Miles Lane" <miles.lane@xxxxxxxxx> wrote:
>
> > CC drivers/dma/ioat_dca.o
> > drivers/dma/ioat_dca.c: In function 'ioat_dca_get_tag':
> > drivers/dma/ioat_dca.c:177: error: implicit declaration of function
> > 'cpu_physical_id'
>
> Looks like cpu_physical_id() doesn't get implemented if CONFIG_SMP=n.
>
> Either ioat needs to stop using cpu_physical_id() if SMP=n, or the
> supported architectures (i386, x86_64, ia64) should provide a non-SMP
> version of cpu_physical_id(). Preferably the latter, I'd say.


It doesn't make much sense in smp.h because there is not really
a concept of physical id on most architectures i expect. Better
to put it into the individual asm files.

-Andi

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