Re: [PATCH v4] cpuset: Enable cpuset controller in default hierarchy

[Peter Zijlstra]

On Fri, Mar 09, 2018 at 03:43:34PM -0500, Waiman Long wrote:
> The isolcpus= parameter just reduce the cpus available to the rests of
> the system. The cpuset controller does look at that value and make
> adjustment accordingly, but it has no dependence on exclusive cpu/mem
> features of cpuset.

The isolcpus= boot param is donkey shit and needs to die. cpuset _used_
to be able to fully replace it, but with the advent of cgroup 'feature'
this got lost.

And instead of fixing it, you're making it _far_ worse. You completely
removed all the bits that allow repartitioning the scheduler domains.

Mike is completely right, full NAK on any such approach.