Re: [PATCH v8 5/6] cgroup/cpuset: Update description of cpuset.cpus.partition in cgroup-v2.rst

[Waiman Long]

On 12/1/21 11:39, Tejun Heo wrote:
> On Wed, Dec 01, 2021 at 09:56:21AM -0500, Waiman Long wrote:
> > Right, I shouldn't say corner cases. Having task in an intermediate
> > partition is possible depending on event sequence. I am aware that there are
> > code in the cpuset code to prevent that, but it didn't block all cases.
> > > > A valid parent partition may distribute out all its CPUs to
> > > >    its child partitions as long as there is no task associated with it.
> > > Assuming there's always at least one kernel thread in the root cgroup
> > > that can't be migrated anyway.]
> > I am aware of that. That is why I said root cgroup must have at least one
> > cpu in its "cpuset.cpus.effective".
> In that case, let's explicitly describe that condition.

Yes, I will. Only non-root cgroup can distribute out all its CPUs. I 
thought I said that in the documentation, maybe it is very clear.

Cheers,
Longman