Re: [PATCH 3/4] cpusets,isolcpus: add file to show isolated cpus in cpuset

From: Tejun Heo
Date: Wed Mar 18 2015 - 12:47:59 EST

On Mon, Mar 09, 2015 at 12:12:09PM -0400, riel@xxxxxxxxxx wrote:
> From: Rik van Riel <riel@xxxxxxxxxx>
> The previous patch makes it so the code skips over isolcpus when
> building scheduler load balancing domains. This makes it hard to
> see for a user which of the CPUs in a cpuset are participating in
> load balancing, and which ones are isolated cpus.
> Add a cpuset.isolcpus file with info on which cpus in a cpuset are
> isolated CPUs.
> This file is read-only for now. In the future we could extend things
> so isolcpus can be changed at run time, for the root (system wide)
> cpuset only.

Didn't Li say that this is trivially computable from userland? I'm
not sure this knob actually belongs to cpuset.


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