Re: [regression] cpuset: offlined CPUs removed from affinity masks

[Tejun Heo]

Hello,

On Sat, Mar 07, 2020 at 11:06:47AM -0500, Mathieu Desnoyers wrote:
> Looking into solving this, one key issue seems to get in the way: cpuset
> appear to care about not allowing to create a cpuset which has no currently
> active CPU where to run, e.g.:
...
> Clearly, there is an intent that cpusets take the active mask into
> account to prohibit creating an empty cpuset, but nothing prevents
> cpu hotplug from creating an empty cpuset.
> 
> I wonder how to solve this inconsistency ?

Please try cpuset in cgroup2. It shouldn't have those issues.

Thanks.

-- 
tejun