Quoting Chris Wilson (2017-09-27 17:44:37) > With preemption, we will want to "unsubmit" a request, taking it back > from the hw and returning it to the priority sorted execution list. In > order to know where to insert it into that list, we need to remember > its adjust priority (which may change even as it was being executed). s/adjust/adjusted/ "This also affects reset for execlists as we are now unsubmitting the requests following the reset (rather than directly writing the ELSP for the inflight contexts). This turns reset into an accidental preemption point, as after the reset we may choose a different pair of contexts to submit to hw. GuC is not updated as this series doesn't add preemption to the GuC submission, and so it can keep benefiting from the early pruning of the DFS inside execlists_schedule() for a little longer. We also need to find a way of reducing the cost of that DFS..." _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
