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

[Michal Koutný]

On Wed, Apr 02, 2025 at 02:02:21PM +0200, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
> 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.

I meant here that
- rt_group_sched=0 -> cgroup v2 works but there's no RT group scheduling
- rt_group_sched=1 -> cgroup v2 doesn't work (prohibit RT tasks in
                      non-root groups)

I.e. there is no new function for cgroup v2 besides that it is possible
to switch to RT group scheduling (with v1) without recompiling the
kernel.

Michal

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