GEM: Replace drm_memrange_for_each with just evicting what we brought in.

I was wrong about how the data structure worked, and didn't care to fix it
to support debugging code.

3 files changed, 15 insertions, 65 deletions

diff --git a/linux-core/drmP.h b/linux-core/drmP.h
index 21a4dcd0..ffeafc18 100644
--- a/linux-core/drmP.h
+++ b/linux-core/drmP.h
@@ -1315,10 +1315,6 @@ extern int drm_memrange_remove_space_from_tail(struct drm_memrange *mm,
 					       unsigned long size);
 extern int drm_memrange_add_space_to_tail(struct drm_memrange *mm,
 					  unsigned long size);
-extern int drm_memrange_for_each(struct drm_memrange *mm,
-				 int (*callback)(struct drm_memrange_node *node,
-						 void *data),
-				 void *data);
 
 static inline struct drm_memrange *drm_get_mm(struct drm_memrange_node *block)
 {
diff --git a/linux-core/drm_memrange.c b/linux-core/drm_memrange.c
index 7304cbaa..7014c4e2 100644
--- a/linux-core/drm_memrange.c
+++ b/linux-core/drm_memrange.c
@@ -275,33 +275,6 @@ int drm_memrange_init(struct drm_memrange * mm, unsigned long start, unsigned lo
 	return drm_memrange_create_tail_node(mm, start, size);
 }
 
-/**
- * Walks the list of allocated memory ranges and calls the callback on
- * one.
- */
-int drm_memrange_for_each(struct drm_memrange *mm,
-			  int (*callback)(struct drm_memrange_node *node,
-					  void *data),
-			  void *data)
-{
-	struct list_head *list, *next;
-
-	list_for_each_safe(list, next, &mm->ml_entry) {
-		struct drm_memrange_node *cur;
-		int ret;
-
-		cur = list_entry(list, struct drm_memrange_node, ml_entry);
-		if (!cur->free) {
-			ret = callback(cur, data);
-			if (ret != 0)
-				return ret;
-		}
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL(drm_memrange_for_each);
-
 EXPORT_SYMBOL(drm_memrange_init);
 
 void drm_memrange_takedown(struct drm_memrange * mm)
diff --git a/linux-core/i915_gem.c b/linux-core/i915_gem.c
index a1ce139b..919f32d7 100644
--- a/linux-core/i915_gem.c
+++ b/linux-core/i915_gem.c
@@ -288,45 +288,17 @@ i915_gem_reloc_and_validate_object(struct drm_gem_object *obj,
 }
 
 static int
-evict_callback(struct drm_memrange_node *node, void *data)
-{
-	struct drm_gem_object *obj;
-	struct drm_i915_gem_object *obj_priv;
-	
-	DRM_INFO ("evict node %p\n", node);
-	
-	obj = node->private;
-	DRM_INFO ("evict obj %p\n", obj);
-	
-	obj_priv = obj->driver_private;
-	DRM_INFO ("evict priv %p\n", obj_priv);
-
-	DRM_INFO ("pin_count %d\n", obj_priv->pin_count);
-	if (obj_priv->pin_count == 0)
-		i915_gem_object_unbind(obj);
-
-	return 0;
-}
-
-static int
-i915_gem_sync_and_evict(struct drm_device *dev)
+i915_gem_sync(struct drm_device *dev)
 {
 	drm_i915_private_t *dev_priv = dev->dev_private;
-	int ret;
 	RING_LOCALS;
 
 	BEGIN_LP_RING(2);
 	OUT_RING(CMD_MI_FLUSH | MI_READ_FLUSH | MI_EXE_FLUSH);
 	OUT_RING(0); /* noop */
 	ADVANCE_LP_RING();
-	ret = i915_quiescent(dev);
-	if (ret != 0)
-		return ret;
-
-	/* Evict everything so we have space for sure. */
-	drm_memrange_for_each(&dev_priv->mm.gtt_space, evict_callback, NULL);
 
-	return 0;
+	return i915_quiescent(dev);
 }
 
 static int
@@ -410,9 +382,9 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
 
 	/* Big hammer: flush and idle the hardware so we can map things in/out.
 	 */
-	ret = i915_gem_sync_and_evict(dev);
+	ret = i915_gem_sync(dev);
 	if (ret != 0) {
-		DRM_ERROR ("i915_gem_sync_and_evict failed %d\n", ret);
+		DRM_ERROR ("i915_gem_sync failed %d\n", ret);
 		return ret;
 	}
 
@@ -477,9 +449,18 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
 			   args->buffer_count, ret);
 
 	/* Clean up and return */
-	ret = i915_gem_sync_and_evict(dev);
+	ret = i915_gem_sync(dev);
 	if (ret)
-		DRM_ERROR ("failed to sync/evict buffers %d\n", ret);
+		DRM_ERROR ("failed to sync %d\n", ret);
+
+	/* Evict all the buffers we moved in, leaving room for the next guy. */
+	for (i = 0; i < args->buffer_count; i++) {
+		struct drm_gem_object *obj = object_list[i];
+		struct drm_i915_gem_object *obj_priv = obj->driver_private;
+
+		if (obj_priv->pin_count == 0)
+			i915_gem_object_unbind(obj);
+	}
 err:
 	if (object_list != NULL) {
 		for (i = 0; i < args->buffer_count; i++)