Extensible scheduler class to be merged for 6.11

The extensible scheduler class("sched_ext") framework allows the writing of CPU schedulers as a set ofBPF programs. It has been somewhatcontroversial, and its merging into the kernel has been blocked despitea clear level of interest from users.Linus Torvalds has now letit be known that he has made a decision and, overriding the schedulermaintainer, will merge sched_ext for the 6.11 release.

I honestly see no reason to delay this any more. This wholepatchset was the major (private) discussion at last year's kernelmaintainer summit, and I don't find any value in having the samediscussion (whether off-list or as an actual event) at the upcomingmaintainer summit one year later, so to make any kind of saneprogress, my current plan is to merge this for 6.11.