Quoting Chris Wilson (2019-01-21 22:21:16) > We don't want to busywait on the GPU if we have other work to do. If we > give non-busywaiting workloads higher (initial) priority than workloads > that require a busywait, we will prioritise work that is ready to run > immediately.
Fwiw, without preemption using HW semaphore does perturb user visible scheduling behaviour (enough for me to be able to write a userspace deadlock). -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
