Re: [PATCH v4] time/tick-sched: idle load balancing when nohz_full cpu becomes idle.

[Yun Levi]

> > Yes, but stronger, as long as the CPU is part of a load-balance domain,
> > it must not disable the tick while running anything.
> >
> > that is, NOHZ_FULL must not become active unless it's running on a
> > single CPU partition.
>
> I like the idea but I'm afraid to introduce regressions while doing so,
> with people currently using nohz_full without proper partionning...

But I wonder when nohz_full cpu enters *idle".

If the cpuidle governor selects an idle state which wants "stop_tick",
If nohz_full cpu is still in sched domain, should it disable tick or not?