Re: [PATCH] numa x86_64 use generic percpu var numa_node_idimplementation fix3 [was Re: mmotm 2010-05-14-13-33 uploaded]

From: Randy Dunlap
Date: Mon May 17 2010 - 23:41:54 EST


On Mon, 17 May 2010 21:46:50 -0400 Lee Schermerhorn wrote:

> On Sun, 2010-05-16 at 16:37 -0700, Randy Dunlap wrote:
> > include/linux/topology.h:248: error: implicit declaration of function 'cpu_to_node'
> >
> >
> > config attached.
>
> Hmmm, i386 NUMA.
>
> With the following patch, your config builds correctly. !NUMA i386
> still builds, as well.

Yes, thanks.

Acked-by: Randy Dunlap <rdunlap@xxxxxxxxxxxx>


> Lee
>
> Fix i386 numa build: define cpu_to_node() stub same as
> early_cpu_to_node() for i386 numa builds. Just return node
> from cpu_to_node_map[].
>
> Signed-off-by: Lee Schermerhorn <lee.schermerhorn@xxxxxx>
>
> arch/x86/include/asm/topology.h | 4 +++-
> 1 files changed, 3 insertions(+), 1 deletion(-)
>
> Index: linux-2.6.34-rc7-mmotm-100514-1333/arch/x86/include/asm/topology.h
> ===================================================================
> --- linux-2.6.34-rc7-mmotm-100514-1333.orig/arch/x86/include/asm/topology.h 2010-05-17 08:40:47.000000000 -0400
> +++ linux-2.6.34-rc7-mmotm-100514-1333/arch/x86/include/asm/topology.h 2010-05-17 10:49:08.000000000 -0400
> @@ -53,10 +53,12 @@
> extern int cpu_to_node_map[];
>
> /* Returns the number of the node containing CPU 'cpu' */
> -static inline int early_cpu_to_node(int cpu)
> +static inline int __cpu_to_node(int cpu)
> {
> return cpu_to_node_map[cpu];
> }
> +#define early_cpu_to_node __cpu_to_node
> +#define cpu_to_node __cpu_to_node
>
> #else /* CONFIG_X86_64 */
>
>
>


---
~Randy
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