"Symmetric Mmplsstpecying (SMP)"
(almost looks like a RISC-V extension)
https://www.serverion.com/uncategorized/preempt-rt-explained-real-time-kernel-features/
... like wtf, noone even bothered checking?
Also, it's just based on Paul E. McKenney (npub1sj2…2drf) 's work, and he gave many really good presentations.
Stick with the original, folks.