innodb_numa_interleave is dormant because of missing cmake tests to enable it.
If enabled innodb_numa_interleave=1 by default tries to interleave over all nodes.
Due to user defined constraints in systemd, containers or otherwise mysqld could of been limited to a smaller set of cpus.
By doing the function call numa_get_mems_allowed rather than assuming all nodes are available the allowed number nodes can be allocated from.
See linked github pull requests.