cpuset filesystems - a (short) doubt

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Hi,
I have a question about cpuset filesystem - is it needed ?

In the cpuset example given in:
http://lxr.free-electrons.com/source/Documentation/cgroups/cgroups.txt
we do not use the cpuset filesystsm but the cgroup filesystsm.
(mount -t cgroup -ocpuset cpuset /sys/fs/cgroup/cpuset)

On my distro, which uses systemd + cgroups:
mount | grep "type cpuset"
gives nothing.

On the other hands, mount | grep "type cgroup" | wc -l
gives: 9

I looked in the code of other subsystems (like blk cgroup and  memcg -
memory control groups) and there is no filesystsm in the code; see
block/blk-cgroup.c
mm/memcontrol.c

so is the cpuset filesystsm really needed ?


DS
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