On Mon, Feb 14, 2022 at 12:19 PM Todd Kjos <tkjos@xxxxxxxxxx> wrote: > On Mon, Feb 14, 2022 at 11:29 AM Suren Baghdasaryan <surenb@xxxxxxxxxx> wrote: > > On Mon, Feb 14, 2022 at 10:33 AM Todd Kjos <tkjos@xxxxxxxxxx> wrote: > > > > > > Since we are creating a new gpu cgroup abstraction, couldn't this > > > "transfer" be done in userspace by the target instead of in the kernel > > > driver? Then this patch would reduce to just a flag on the buffer > > > object. > > > > Are you suggesting to have a userspace accessible cgroup interface for > > transferring buffer charges and the target process to use that > > interface for requesting the buffer to be charged to its cgroup? > > Well, I'm asking why we need to do these cgroup-ish actions in the > kernel when it seems more natural to do it in userspace. > In case its useful, some additional context from some of the Linux Plumber's discussions last fall: Daniel Stone outlines some concerns with the cgroup userland handling for accounting: https://youtu.be/3OqllZONTiQ?t=3430 And the binder ownership transfer bit was suggested here by Daniel Vetter: https://youtu.be/3OqllZONTiQ?t=3730 thanks -john
