Re: [Nouveau] [PATCH 09/17] drm/radeon: use common fence implementation for fences

Daniel Vetter
2014-07-23T09:44:27Z

On Wed, Jul 23, 2014 at 11:39 AM, Daniel Vetter <daniel.vetter@ffwll.ch> wrote:
> The scheduler needs to keep track of a lot of fences, so I think we'll
> have to register callbacks, not a simple wait function. We must keep
> track of all the non-i915 fences for all oustanding batches. Also, the
> scheduler doesn't eliminate the hw queue, only keep it much slower so
> that we can sneak in higher priority things.
>
> Really, scheduler or not is orthogonal.

Also see my other comment about interactions between wait_fence and
the i915 reset logic. We can't actually use it from within the
scheduler code since that would deadlock.
-Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch