drm/i915: Add execution priority boosting for mmioflips

Commit 6b5e90f58c56 ("drm/i915/scheduler: Boost priorities for flips")
added priority boosting for the modern atomic pageflips (and modesets),
but we should do the same for existing users of mmioflips (we don't yet
need to consider csflips as they are not used by execlists and so do not
have any support for a scheduler).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20161115092249.18356-1-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 4b6986c..ba184f0 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -12077,6 +12077,7 @@ static void intel_mmio_flip_work_func(struct work_struct *w)
                to_intel_framebuffer(crtc->base.primary->fb);
        struct drm_i915_gem_object *obj = intel_fb->obj;
 
+       i915_gem_object_wait_priority(obj, 0, I915_PRIORITY_DISPLAY);
        WARN_ON(i915_gem_object_wait(obj, 0, MAX_SCHEDULE_TIMEOUT, NULL) < 0);
 
        intel_pipe_update_start(crtc);