On Sun, Feb 28, 2021 at 12:36:29PM -0800, Linus Torvalds wrote:

So this is entirely unrelated to the csky pull request, and is more of
a generic "the perf CPU hotplug thing seems a complete mess".

Yes, I've noticed that a few times but it never seemed to have made it
to the top of the todo list :/ Let me see what I can do about that.