Started out as what intended to be a quick look at how to extend the fences to support the priority inheritance ended up completing the final few steps to implement the most trivial priority based scheduler. A lot of the policy decisions have been left out (such as e.g. only submitting one request from each context each interrupt) so that it is not very fine-grained, nor does it implement time-slicing and fair load balancing, and continues to live in blissful ignorance of the challenge of preemption. It is also execlists only. It purely serves as fodder to take the next steps towards a real scheduler, and in the meantime offers one benefit to current desktops, giving uber priority to the rendering of the pageflip. This adds the dependency tracking of the requests required to do inflight reordering (as distinct from the dependency tracking required to decide when we can submit the request to hardware) and implements a priority sorted rbtree of the ready-to-execute requests to be submitted on the next context-switch. -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
