Messages in this thread | | | Date | Wed, 6 Jun 2018 13:56:35 -0700 | From | Tejun Heo <> | Subject | Re: [PATCH] cpuset: Enforce that a child's cpus must be a subset of the parent |
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Hello, Peter.
Sorry about late reply.
On Thu, May 31, 2018 at 06:38:26PM +0200, Peter Zijlstra wrote: > > Yeah, for cpuset, it's messier, but it isn't different from hotunplug > > scenario, right? I think the best we can do there is putting ancestor > > operation on an equal footing as hotplug ops. > > Right, but hotplug is exceedingly rare, while I get the impression you > think it is perfectly fine to recind on your resource grants.
Well, yeah, for a trivial example, imagine dynamic workload management where you wanna restrict what a side-loaded batch workload can do on and off peak hours. All other controllers can do that. It'd be a really odd design trade-off if we make that really clumsy for cpuset especially given that we wouldn't be gaining any actual functionalities.
Thanks.
-- tejun
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