On Tue, Oct 22, 2024 at 1:38 AM Maxime Ripard <mripard@xxxxxxxxxx> wrote: > > I wanted to follow-up on the discussion we had at Plumbers with John and > T.J. about (among other things) adding new heaps to the kernel. > > I'm still interested in merging a carve-out driver[1], since it seems to be > in every vendor BSP and got asked again last week. > > I remember from our discussion that for new heap types to be merged, we > needed a kernel use-case. Looking back, I'm not entirely sure how one > can provide that given that heaps are essentially facilities for > user-space. > > Am I misremembering or missing something? What are the requirements for > you to consider adding a new heap driver? It's basically the same as the DRM subsystem rules. https://docs.kernel.org/gpu/drm-uapi.html#open-source-userspace-requirements ie: There has to be opensource user for it, and the user has to be more significant than a "toy" implementation (which can be a bit subjective and contentious when trying to get out of a chicken and egg loop). thanks -john
