i915_sw_fence_signaled
GEM_BUG_ON(i915_sw_fence_signaled(&pos->fence));
if (!i915_sw_fence_signaled(&rq->submit)) {
GEM_BUG_ON(!i915_sw_fence_signaled(&rq->submit));
if (i915_sw_fence_signaled(&rq->submit)) {
if (!i915_sw_fence_signaled(&rq->semaphore))
GEM_BUG_ON(!i915_sw_fence_signaled(&rq->submit));
i915_sw_fence_signaled(&request->semaphore))