On Tue, Dec 14, 2021 at 12:55 PM Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > > Hi, > > This is actually tested code; but still missing the SMP wake-to-idle machinery. > I still need to think about that. Thanks, Peter! At a first glance, your main patch does not look much smaller than mine, and I thought the whole point of re-doing it was to throw away extra features and make things smaller/simpler... Anyway, I'll test your patchset over the next week or so and let you know if anything really needed is missing (other than waking an idle server if there is one on a worker wakeup; this piece is definitely needed). > > I'll post my test-hack as a reply, but basically it does co-operative and > preemptive UP-like user scheduling. > > Patches go on top of tip/master as they rely on the .fixup removal > recently merged in tip/x86/core. > > Also, I still need to audit a bunch of mm code, because I'm not sure things are > actually as well behaved as this code supposes they are. >
