Messages in this thread | | | Date | Wed, 22 Jun 2022 19:39:29 +0200 | From | Michal Koutný <> | Subject | Re: [PATCH v2] sched: RT bandwidth interface for cgroup unified hierarchy |
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Hello Chengming.
On Wed, Jun 22, 2022 at 09:55:57AM +0800, Chengming Zhou <zhouchengming@bytedance.com> 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
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