[$] Automatic tuning for weighted interleaving

It is common, on NUMA systems, to try to allocate all memory on the localnode, since it will be the fastest. That is not the only possible policy,though; another is weighted interleaving,which seeks to distribute allocations across memory controllers to maximizethe bandwidth utilization on each. Configuring such policies can bechallenging, though. At the 2025 Linux Storage, Filesystem,Memory-Management, and BPF Summit, Joshua Hahn ran a session in thememory-management track about how that configuration might be automated.