On Thu, Jul 09, 2020 at 10:09:11AM +0200, Daniel Vetter wrote: > Hi Jason, > > Below the paragraph I've added after our discussions around dma-fences > outside of drivers/gpu. Good enough for an ack on this, or want something > changed? > > Thanks, Daniel > > > + * Note that only GPU drivers have a reasonable excuse for both requiring > > + * &mmu_interval_notifier and &shrinker callbacks at the same time as having to > > + * track asynchronous compute work using &dma_fence. No driver outside of > > + * drivers/gpu should ever call dma_fence_wait() in such contexts. I was hoping we'd get to 'no driver outside GPU should even use dma_fence()' Is that not reasonable? When your annotations once anything uses dma_fence it has to assume the worst cases, right? Jason
