drm/i915: Rename 'do_execbuf' to 'execbuf_submit'

The submission portion of the execbuffer code path was abstracted into a
function pointer indirection as part of the legacy vs execlist work. The two
implementation functions are called 'i915_gem_ringbuffer_submission' and
'intel_execlists_submission' but the pointer was called 'do_execbuf'. There is
already a 'i915_gem_do_execbuffer' function (which is what calls the pointer
indirection). The name of the pointer is therefore considered to be backwards
and should be changed.

This patch renames it to 'execbuf_submit' which is hopefully a bit clearer.

For: VIZ-5115
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Tomas Elf <tomas.elf@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_drv.h

@@ -1814,13 +1814,13 @@ struct drm_i915_private {
 
 	/* Abstract the submission mechanism (legacy ringbuffer or execlists) away */
 	struct {
-		int (*do_execbuf)(struct drm_device *dev, struct drm_file *file,
-				  struct intel_engine_cs *ring,
-				  struct intel_context *ctx,
-				  struct drm_i915_gem_execbuffer2 *args,
-				  struct list_head *vmas,
-				  struct drm_i915_gem_object *batch_obj,
-				  u64 exec_start, u32 flags);
+		int (*execbuf_submit)(struct drm_device *dev, struct drm_file *file,
+				      struct intel_engine_cs *ring,
+				      struct intel_context *ctx,
+				      struct drm_i915_gem_execbuffer2 *args,
+				      struct list_head *vmas,
+				      struct drm_i915_gem_object *batch_obj,
+				      u64 exec_start, u32 flags);
 		int (*init_rings)(struct drm_device *dev);
 		void (*cleanup_ring)(struct intel_engine_cs *ring);
 		void (*stop_ring)(struct intel_engine_cs *ring);

drivers/gpu/drm/i915/i915_gem.c

@@ -4859,12 +4859,12 @@ int i915_gem_init(struct drm_device *dev)
 	}
 
 	if (!i915.enable_execlists) {
-		dev_priv->gt.do_execbuf = i915_gem_ringbuffer_submission;
+		dev_priv->gt.execbuf_submit = i915_gem_ringbuffer_submission;
 		dev_priv->gt.init_rings = i915_gem_init_rings;
 		dev_priv->gt.cleanup_ring = intel_cleanup_ring_buffer;
 		dev_priv->gt.stop_ring = intel_stop_ring_buffer;
 	} else {
-		dev_priv->gt.do_execbuf = intel_execlists_submission;
+		dev_priv->gt.execbuf_submit = intel_execlists_submission;
 		dev_priv->gt.init_rings = intel_logical_rings_init;
 		dev_priv->gt.cleanup_ring = intel_logical_ring_cleanup;
 		dev_priv->gt.stop_ring = intel_logical_ring_stop;

drivers/gpu/drm/i915/i915_gem_execbuffer.c

@@ -1601,9 +1601,9 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
 	} else
 		exec_start += i915_gem_obj_offset(batch_obj, vm);
 
-	ret = dev_priv->gt.do_execbuf(dev, file, ring, ctx, args,
-				      &eb->vmas, batch_obj, exec_start,
-				      dispatch_flags);
+	ret = dev_priv->gt.execbuf_submit(dev, file, ring, ctx, args,
+					  &eb->vmas, batch_obj, exec_start,
+					  dispatch_flags);
 
 	/*
 	 * FIXME: We crucially rely upon the active tracking for the (ppgtt)