On Fri, May 04, 2018 at 10:17:22AM +0200, Daniel Vetter wrote: > On Fri, May 04, 2018 at 09:09:10AM +0100, Chris Wilson wrote: > > Quoting Daniel Vetter (2018-05-03 15:25:52) > > > Almost everyone uses dma_fence_default_wait. > > > > > > v2: Also remove the BUG_ON(!ops->wait) (Chris). > > > > I just don't get the rationale for implicit over explicit. > > Closer approximation of dwim semantics. There's been tons of patch series > all over drm and related places to get there, once we have a big pile of > implementations and know what the dwim semantics should be. Individually > they're all not much, in aggregate they substantially simplify simple > drivers. I also think clearer separation between optional optimization hooks and mandatory core parts is useful in itself. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch
