[Intel-gfx] [PATCH 19/70] drm/i915: Inline check required for object syncing prior to execbuf

[Chris Wilson]

This trims a little overhead from the common case of not needing to
synchronize between rings.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_gem_execbuffer.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index bd7b7ec5c184..1eda0bdc5eab 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -909,9 +909,12 @@ i915_gem_execbuffer_move_to_gpu(struct intel_engine_cs *ring,
 
 	list_for_each_entry(vma, vmas, exec_list) {
 		struct drm_i915_gem_object *obj = vma->obj;
-		ret = i915_gem_object_sync(obj, ring);
-		if (ret)
-			return ret;
+
+		if (obj->active & ~intel_ring_flag(ring)) {
+			ret = i915_gem_object_sync(obj, ring);
+			if (ret)
+				return ret;
+		}
 
 		if (obj->base.write_domain & I915_GEM_DOMAIN_CPU)
 			flush_chipset |= i915_gem_clflush_object(obj, false);
-- 
2.1.4