On Tue, Mar 04, 2025 at 04:37:56PM +0100, Michal Koutný wrote:
> As a followup to commits 6c2920926b10e ("cgroup: replace
> unified-hierarchy.txt with a proper cgroup v2 documentation") and
> ab03125268679 ("cgroup: Show # of subsystem CSSes in cgroup.stat"),
> add a runtime message to users who read status of controllers in
> /proc/cgroups on v2-only system. The detection is based on a)
> no controllers are attached to v1, b) default hierarchy is mounted (the
> latter is for setups that neven mount v2 but read /proc/cgroups upon
> boot when controllers default to v2).
I'm hoping that we could deprecate /proc/cgroups entirely. Maybe we can just
warn whenever the file is accessed?
Thanks.
--
tejun
