Extensible scheduler class rejected

The extensible scheduler class enables thecreation of CPU schedulers in BPF. After the fourthversion of this series was greeted with relative silence, Tejun Heo asked aboutthe status of this work:

We are comfortable with the current API. Everything we tried fitpretty well. It will continue to evolve but sched_ext now seemsmature enough for initial inclusion. I suppose lack of responsedoesn't indicate tacit agreement from everyone, so what are youguys all thinking?

Scheduler maintainer Peter Zijlstra gavehim his answer: "I'm still hating the whole thing with apassion". He went on to make it clear that this work will not bemerged into the mainline. So, it seems, developers wanting to try theirhand at BPF scheduler development will need to apply an out-of-tree patchseries, for now at least.