Re: [PATCH 6/9] x86: Unify cpu/apicid <-> NUMA node mapping between32 and 64bit

[Pekka Enberg]

On Thu, Nov 11, 2010 at 1:02 PM, Tejun Heo <tj@xxxxxxxxxx> wrote:
> The mapping between cpu/apicid and node is done via apicid_to_node[]
> on 64bit and apicid_2_node[] + apic->numa_cpu_node() on 32bit.  This
> difference makes it difficult to further unify 32 and 64bit NUMA
> hanlding.
>
> This patch unifies it by replacing both apicid_to_node[] and
> apicid_2_node[] with __apicid_to_node[] array, which is accessed by
> two accessors - set_apicid_to_node() and numa_cpu_node().  On 64bit,
> numa_cpu_node() always consults __apicid_to_node[] directly while
> 32bit goes through apic->numa_cpu_node() method to allow apic
> implementation to override it.
>
> There are several places where using numa_cpu_node() is awkward and
> the override doesn't matter.  In those places, __apicid_to_node[] are
> used directly.
>
> Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>

Acked-by: Pekka Enberg <penberg@xxxxxxxxxx>
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