Hello, Waiman. On Fri, Jul 21, 2017 at 04:34:51PM -0400, Waiman Long wrote: > The special prefix '#' attached to a controller name can now be written > into the cgroup.subtree_control file to set that controller in bypass > mode in all the child cgroups. The controller will show up in the > children's cgroup.controllers file, but the corresponding control knobs > will be absent. However, that controller can be enabled or bypassed > in its children by writing to their respective subtree_control files. > > This mode can be useful to non-domain controllers or controllers where > there are costs to each additional layer of hierarchy. This mode will > also allow more freedom in how each controller can shape its effective > hierarchy independent of each others. While this continues to be an interesting idea. I'm still having a bit of hard time with the change. The biggest blocks are * As raised a couple times before, how would this work in terms of resource ownership and delegation? The last time we spoke about this, I felt that we were mostly talking past each other. I think it'd really help to think about / explain how this would work with delegation to clarify who owns what. * While the idea is interesting, I think we need more concrete usecases to justify the addition and make sure that we aren't doing something misguided. Can you please illustrate / give examples of how this would be useful? Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe cgroups" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
