Re: [RFC] cpuset: add interface to isolated cpus

[Nick Piggin]

Paul Jackson wrote:
> Nick wrote:
>
> > Or, another question, how does my patch hijack cpus_allowed? In
> > what way does it change the semantics of cpus_allowed?
>
>
> It limits load balancing for tasks in cpusets containing
> a superset of that cpusets cpus.
>
> There are always such cpusets - the top cpuset if no other.

Ah OK, and there is my misunderstanding with cpusets. From the
documentation it appears as though cpu_exclusive cpusets are
made in order to do the partitioning thing.

If you always have other domains overlapping them (regardless
that it is a parent), then what actual use does cpu_exclusive
flag have?

--
SUSE Labs, Novell Inc.
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