The ia64 "allnoconfig" build ends up with the (possibly dubious) combination
of .config options:

	CONFIG_SMP=n
	CONFIG_NUMA=y

which leads to the following build problems with mm/slqb.c

  CC      mm/slqb.o
mm/slqb.c: In function ‘__slab_free’:
mm/slqb.c:1735: error: implicit declaration of function ‘slab_free_to_remote’
mm/slqb.c: In function ‘kmem_cache_open’:
mm/slqb.c:2274: error: implicit declaration of function ‘kmem_cache_dyn_array_free’
mm/slqb.c:2275: warning: label ‘error_cpu_array’ defined but not used
mm/slqb.c: In function ‘kmem_cache_destroy’:
mm/slqb.c:2395: error: implicit declaration of function ‘claim_remote_free_list’
mm/slqb.c: In function ‘kmem_cache_init’:
mm/slqb.c:2885: error: ‘per_cpu__kmem_cpu_nodes’ undeclared (first use in this function)
mm/slqb.c:2885: error: (Each undeclared identifier is reported only once
mm/slqb.c:2885: error: for each function it appears in.)
mm/slqb.c:2886: error: ‘kmem_cpu_cache’ undeclared (first use in this function)

-Tony