Hello Chengming. On Wed, Jun 22, 2022 at 09:55:57AM +0800, Chengming Zhou <zhouchengming@xxxxxxxxxxxxx> wrote: > We need to run RT threads in cgroup unified hierarchy, but we can't > since the default rt_bandwidth.rt_runtime of non-root task_group is 0 > and we haven't interface to update it. Do you really want to make use of group RT schedulling (CONFIG_RT_GROUP_SCHED) or just be able to run RT threads in the unified hieararchy with cpu controller enabled? Those are two different use cases, the former is more complex and it's a reason why v2 doesn't expose the RT attributes (yet). The latter is typically achieved by unsetting CONFIG_RT_GROUP_SCHED (and relying on the global rt_runtime limit). Thanks, Michal
