I looked for documentation on cgroups-v2, which is a complete 
rewrite of cgroups and is the one available in recent kernels. I wasn't 
able to find a howto. But one of the documents I found 
(https://www.linux.com/blog/all-about-linux-kernel-cgroups-redesign) is 
full of references to systemd to the point it is literally disgusting.

     I cite:
"Systemd and cgroup developers are working together to turn systemd into 
a global cgroup manager that creates higher-level control knobs and 
prevents direct access to the kernel. Many Systemd changes are already 
released while cgroup changes are set to be merged into the upstream 
kernel. Much work still remains, however."

     Don't vomit on your laptops.

     Didier