On Sat, Jan 16, 2021 at 12:30:33PM +0100, Peter Zijlstra wrote: > Hi, > > These patches (no longer 4), seems to fix all the hotplug regressions as per > nearly a 100 18*SRCU-P runs over-night. > > I did clean up the patches, so possibly I wrecked it again. I've started new > runs and will again leave them running over-night.
Hurph... I've got one splat from this version, one I've not seen before: [ 68.712848] Dying CPU not properly vacated! ... [ 68.744448] CPU1 enqueued tasks (2 total): [ 68.745018] pid: 14, name: rcu_preempt [ 68.745557] pid: 18, name: migration/1 Paul, rcu_preempt, is from rcu_spawn_gp_kthread(), right? Afaict that doesn't even have affinity.. /me wonders HTH that ended up on the runqueue so late.
