Re: [RFC PATCH v5 20/29] sched/deadline: Allow deeper hierarchies of RT cgroups

[Tejun Heo]

On Mon, May 11, 2026 at 11:40:04AM +0200, luca abeni wrote:
> We are discussing this issue with Yuri, and we have a doubt: if we
> disable the RT-CPU controller for a cgroup, would it be possible to
> enable it for its children?
> (In other words: if we want the RT-CPU controller to be enabled for
> some "leaf" cgroups, we need to enable it for their parents, right?)

Yeah, a cgroup has a controller available to it iff its parent enables that
controller, so all ancestors would have to enable it.

Thanks.

-- 
tejun