drm/i915/scheduler: Boost priorities for flips
Boost the priority of any rendering required to show the next pageflip
as we want to avoid missing the vblank by being delayed by invisible
workload. We prioritise avoiding jank and jitter in the GUI over
starving background tasks.
v2: Descend dma_fence_array when boosting priorities.
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/20161114204105.29171-10-chris@chris-wilson.co.uk
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 0e7e33b..6bc13bd 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3091,6 +3091,11 @@ int i915_gem_object_wait(struct drm_i915_gem_object *obj,
unsigned int flags,
long timeout,
struct intel_rps_client *rps);
+int i915_gem_object_wait_priority(struct drm_i915_gem_object *obj,
+ unsigned int flags,
+ int priority);
+#define I915_PRIORITY_DISPLAY I915_PRIORITY_MAX
+
int __must_check
i915_gem_object_set_to_gtt_domain(struct drm_i915_gem_object *obj,
bool write);