Re: [PATCH v2 06/10] sched: Bypass bandwitdh checks with runtime disabled RT_GROUP_SCHED

[Peter Zijlstra]

On Mon, Mar 10, 2025 at 06:04:38PM +0100, Michal Koutný wrote:
> When RT_GROUPs are compiled but not exposed, their bandwidth cannot
> be configured (and it is not initialized for non-root task_groups neither).
> Therefore bypass any checks of task vs task_group bandwidth.
> 
> This will achieve behavior very similar to setups that have
> !CONFIG_RT_GROUP_SCHED and attach cpu controller to cgroup v2 hierarchy.
> (On a related note, this may allow having RT tasks with
> CONFIG_RT_GROUP_SCHED and cgroup v2 hierarchy.)

Can we make it so that cgroup-v2 is explicitly disallowed for now? As I
said earlier, we're looking at a new implemention with a incompatible
interface.