Quoting Tvrtko Ursulin (2020-08-05 16:03:58) > > On 05/08/2020 13:21, Chris Wilson wrote: > > Allow a brief period for continued access to a dead intel_context by > > deferring the release of the struct until after an RCU grace period. > > As we are using a dedicated slab cache for the contexts, we can defer > > the release of the slab pages via RCU, with the caveat that individual > > structs may be reused from the freelist within an RCU grace period. To > > handle that, we have to avoid clearing members of the zombie struct. > > Is this related to debugfs race, optimising the driver latencies or > both? Need to hack up mutex_reinit bothers me, on top of general desire > to avoid even more rcu complexity. There's an issue in the next patch exposed by virtual engine destruction that needs a fix handily provided by the rcu grace period, and it's used in the following patch to reduce irqoff lock contention. -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
