Another push for sched_ext

I'll also note that many of the sched_ext folks I've spoken with have been hopeful that people will use sched_ext for experimentation, and then contribute those algorithms as actual schedulers later, avoiding any overhead left from the JIT. I attended a talk at LFSMM (article forthcoming) where the speaker mentioned that BPF now has almost all the features needed to implement EEVDF — the main remaining item being the ability to safely call kfuncs while holding a lock — at which point they hope to see people use sched_ext to experiment directly on EEVDF.