Hello, I haven't gone through the patchset yet but some quick comments. On Wed, May 15, 2019 at 10:29:21PM -0400, Kenny Ho wrote: > Given this controller is specific to the drm kernel subsystem which > uses minor to identify drm device, I don't see a need to complicate > the interfaces more by having major and a key. As you can see in the > examples below, the drm device minor corresponds to the line number. > I am not sure how strict cgroup upstream is about the convention but I We're pretty strict. > am hoping there are flexibility here to allow for what I have > implemented. There are a couple of other things I have done that is So, please follow the interface conventions. We can definitely add new ones but that would need functional reasons. > not described in the convention: 1) inclusion of read-only *.help file > at the root cgroup, 2) use read-only (which I can potentially make rw) > *.default file instead of having a default entries (since the default > can be different for different devices) inside the control files (this > way, the resetting of cgroup values for all the drm devices, can be > done by a simple 'cp'.) Again, please follow the existing conventions. There's a lot more harm than good in every controller being creative in their own way. It's trivial to build convenience features in userspace. Please do it there. > > Is this really useful for an administrator to control? > > Isn't the resource we want to control actually the physical backing store? > That's correct. This is just the first level of control since the > backing store can be backed by different type of memory. I am in the > process of adding at least two more resources. Stay tuned. I am > doing the charge here to enforce the idea of "creator is deemed owner" > at a place where the code is shared by all (the init function.) Ideally, controller should only control hard resources which impact behaviors and performance which are immediately visible to users. Thanks. -- tejun _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
