Hello,

On Fri, Feb 08, 2019 at 10:05:50AM +0000, Patrick Bellasi wrote:

a) are available only for non-root nodes, both on default and legacy
   hierarchies, while system wide clamps are defined by a generic
   interface which does not depends on cgroups

b) do not enforce any constraints and/or dependencies between the parent
   and its child nodes, thus relying:
   - on permission settings defined by the system management software,
     to define if subgroups can configure their clamp values
   - on the delegation model, to ensure that effective clamps are
     updated to consider both subgroup requests and parent group
     constraints

I'm not sure about this hierarchical behavior.

c) have higher priority than task-specific clamps, defined via
   sched_setattr(), thus allowing to control and restrict task requests

and I have some other concerns about the interface, but let's discuss
them once the !cgroup portion is settled.

Thanks.

-- 
tejun