References

The kernel docs and man pages this subsystem encodes. Cite specific sections in the source when interpretation is non-obvious.

Kernel documentation

• Documentation/admin-guide/cgroup-v2.rst — the canonical cgroup v2 reference. Source of truth for interface-file semantics, special values ("max", the "<quota> <period>" form of cpu.max), delegation rules, controller availability.
• Documentation/admin-guide/cgroup-v1/ — v1's docs, for context. We don't implement v1; reading this clarifies what v2 changed and why.

Man pages

• cgroups(7) — overview; the v1 vs. v2 differences in particular.
• cgroup_namespaces(7) — the CLONE_NEWCGROUP namespace, which is Linx.Process's concern, not Linx.Cgroup's. Useful when reasoning about which cgroup view a process sees inside a namespace.

Other touched-but-not-implemented surface

• mount(2) — the cgroup2 filesystem is typically mounted by the init system at /sys/fs/cgroup; we don't mount it ourselves. Linx.Cgroup.supported?/0 just checks whether it's already there.
• inotify(7) / fanotify(7) — would underpin a future event-monitoring API for files like memory.events. Deferred.

In-repo cross-references

• Linx.Process — the checkpoint protocol that Linx.Cgroup.add_process/2 composes with.
• lib/linx/netlink/error.ex — pattern for Linx.Cgroup.Error's shape and Exception impl.