CONFIG_NUMA is not available for thedefaultarchitecture x86.
Result is shown for architecture sh

Non-Uniform Memory Access (NUMA) Support

modulename: numa.ko

and/or

node.ko

and/or

mempolicy.ko

and/or

memory-tiers.ko

configname: CONFIG_NUMA

Linux Kernel Configuration
└─>Memory management options
└─>Non-Uniform Memory Access (NUMA) Support
In linux kernel since version 2.6.12  
Some SH systems have many various memories scattered around
the address space, each with varying latencies. This enables
support for these blocks by binding them to nodes and allowing
memory policies to be used for prioritizing and controlling
allocation behaviour.

selects
CONFIG_ARCH_WANT_NUMA_VARIABLE_LOCALITY