[PATCH] ppc64: cpu hotplug notifier for numa

[Paul Mackerras]

Nathan Lynch writes:

> This patch modifies the ppc64 numa code to map a cpu to its node right
> before it is brought up -- this means that secondary cpus are now
> mapped to their nodes during smp_init() (regardless of whether
> CONFIG_HOTPLUG_CPU=y).  Cpus are removed from their nodes after they
> have gone offline.

I get this when compiling with CONFIG_NUMA=n:

arch/ppc64/mm/numa.c:243: warning: `cpu_numa_callback' defined but not used

Only a small point, but it would be nicer if that was fixed.

Paul.