On Fri, Feb 03, 2023 at 10:13:10AM -0500, Waiman Long wrote: > I think I know where the problem is. It is due to the fact the cpuset > hotplug code doesn't update cpumasks of the tasks in the top cpuset (root) > at all when there is a cpu offline or online event. It is probably because > for some of the tasks in the top cpuset, especially the percpu kthread, > changing their cpumasks can be catastrophic. The hotplug code does update > the cpumasks of the tasks that are not in the top cpuset. This problem is > irrespective of whether v1 or v2 is in use. I've been saying this exact thing for how many mails now?
