tree 004b9856181dabdc5a35dd8dade16c2336704a27
parent 26a02b8fc35ff2c393505bccd9f046e8d50c1708
author Chris Wilson <chris@chris-wilson.co.uk> 1467390194 +0100
committer Chris Wilson <chris@chris-wilson.co.uk> 1467402151 +0100

drm/i915: Separate GPU hang waitqueue from advance

Currently __i915_wait_request uses a per-engine wait_queue_t for the dual
purpose of waking after the GPU advances or for waking after an error.
In the future, we may add even more wake sources and require greater
separation, but for now we can conceptually simplify wakeups by separating
the two sources. In particular, this allows us to use different wait-queues
(e.g. one on the engine advancement, a global one for errors and one on
each requests) without any hassle.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1467390209-3576-5-git-send-email-chris@chris-wilson.co.uk