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SubjectRe: [tip:x86/numa] x86: Unify cpu/apicid <-> NUMA node mapping between 32 and 64bit
Hello, Yinghai.

On Fri, Jan 28, 2011 at 12:33:00PM -0800, Yinghai Lu wrote:
> > +#ifdef CONFIG_NUMA
> > +extern int __cpuinit numa_cpu_node(int apicid);
>
> cpu or apicid?

Should have been @cpu. Will send a patch to update it.

> > +int __cpuinit numa_cpu_node(int cpu)
> > +{
> > + int apicid = early_per_cpu(x86_cpu_to_apicid, cpu);
> > +
> > + if (apicid != BAD_APICID)
> > + return __apicid_to_node[apicid];
> > + return NUMA_NO_NODE;
> > +}
>
> it should be changed to cpu_to_node_via_apicid(), it could return
> not onlined node, aka node without memory.
>
> So don't mess it up with cpu_to_node()

Hmmm... are you saying that the name is too confusing with
cpu_to_node() and should be renamed to cpu_to_node_via_apicid()? In
that case, I agree but wish the name were something which represents
what it does as _via_apicid postfix doesn't really tell much. Any
better idea?

Thanks.

--
tejun


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