1 files changed, 314 insertions, 256 deletions

diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c
index c59515ba7e69..add1737dae0d 100644
--- a/drivers/gpu/drm/drm_mm.c
+++ b/drivers/gpu/drm/drm_mm.c
@@ -64,8 +64,8 @@ static struct drm_mm_node *drm_mm_kmalloc(struct drm_mm *mm, int atomic)
 		else {
 			child =
 			    list_entry(mm->unused_nodes.next,
-				       struct drm_mm_node, free_stack);
-			list_del(&child->free_stack);
+				       struct drm_mm_node, node_list);
+			list_del(&child->node_list);
 			--mm->num_unused;
 		}
 		spin_unlock(&mm->unused_lock);
@@ -94,195 +94,242 @@ int drm_mm_pre_get(struct drm_mm *mm)
 			return ret;
 		}
 		++mm->num_unused;
-		list_add_tail(&node->free_stack, &mm->unused_nodes);
+		list_add_tail(&node->node_list, &mm->unused_nodes);
 	}
 	spin_unlock(&mm->unused_lock);
 	return 0;
 }
 EXPORT_SYMBOL(drm_mm_pre_get);
 
-static int drm_mm_create_tail_node(struct drm_mm *mm,
-				   unsigned long start,
-				   unsigned long size, int atomic)
+static inline unsigned long drm_mm_hole_node_start(struct drm_mm_node *hole_node)
 {
-	struct drm_mm_node *child;
-
-	child = drm_mm_kmalloc(mm, atomic);
-	if (unlikely(child == NULL))
-		return -ENOMEM;
-
-	child->free = 1;
-	child->size = size;
-	child->start = start;
-	child->mm = mm;
+	return hole_node->start + hole_node->size;
+}
 
-	list_add_tail(&child->node_list, &mm->node_list);
-	list_add_tail(&child->free_stack, &mm->free_stack);
+static inline unsigned long drm_mm_hole_node_end(struct drm_mm_node *hole_node)
+{
+	struct drm_mm_node *next_node =
+		list_entry(hole_node->node_list.next, struct drm_mm_node,
+			   node_list);
 
-	return 0;
+	return next_node->start;
 }
 
-static struct drm_mm_node *drm_mm_split_at_start(struct drm_mm_node *parent,
-						 unsigned long size,
-						 int atomic)
+static void drm_mm_insert_helper(struct drm_mm_node *hole_node,
+				 struct drm_mm_node *node,
+				 unsigned long size, unsigned alignment)
 {
-	struct drm_mm_node *child;
+	struct drm_mm *mm = hole_node->mm;
+	unsigned long tmp = 0, wasted = 0;
+	unsigned long hole_start = drm_mm_hole_node_start(hole_node);
+	unsigned long hole_end = drm_mm_hole_node_end(hole_node);
 
-	child = drm_mm_kmalloc(parent->mm, atomic);
-	if (unlikely(child == NULL))
-		return NULL;
+	BUG_ON(!hole_node->hole_follows || node->allocated);
 
-	INIT_LIST_HEAD(&child->free_stack);
+	if (alignment)
+		tmp = hole_start % alignment;
 
-	child->size = size;
-	child->start = parent->start;
-	child->mm = parent->mm;
+	if (!tmp) {
+		hole_node->hole_follows = 0;
+		list_del_init(&hole_node->hole_stack);
+	} else
+		wasted = alignment - tmp;
 
-	list_add_tail(&child->node_list, &parent->node_list);
-	INIT_LIST_HEAD(&child->free_stack);
+	node->start = hole_start + wasted;
+	node->size = size;
+	node->mm = mm;
+	node->allocated = 1;
 
-	parent->size -= size;
-	parent->start += size;
-	return child;
-}
+	INIT_LIST_HEAD(&node->hole_stack);
+	list_add(&node->node_list, &hole_node->node_list);
+
+	BUG_ON(node->start + node->size > hole_end);
 
+	if (node->start + node->size < hole_end) {
+		list_add(&node->hole_stack, &mm->hole_stack);
+		node->hole_follows = 1;
+	} else {
+		node->hole_follows = 0;
+	}
+}
 
-struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node,
+struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *hole_node,
 					     unsigned long size,
 					     unsigned alignment,
 					     int atomic)
 {
+	struct drm_mm_node *node;
 
-	struct drm_mm_node *align_splitoff = NULL;
-	unsigned tmp = 0;
+	node = drm_mm_kmalloc(hole_node->mm, atomic);
+	if (unlikely(node == NULL))
+		return NULL;
 
-	if (alignment)
-		tmp = node->start % alignment;
+	drm_mm_insert_helper(hole_node, node, size, alignment);
 
-	if (tmp) {
-		align_splitoff =
-		    drm_mm_split_at_start(node, alignment - tmp, atomic);
-		if (unlikely(align_splitoff == NULL))
-			return NULL;
-	}
+	return node;
+}
+EXPORT_SYMBOL(drm_mm_get_block_generic);
 
-	if (node->size == size) {
-		list_del_init(&node->free_stack);
-		node->free = 0;
-	} else {
-		node = drm_mm_split_at_start(node, size, atomic);
-	}
+/**
+ * Search for free space and insert a preallocated memory node. Returns
+ * -ENOSPC if no suitable free area is available. The preallocated memory node
+ * must be cleared.
+ */
+int drm_mm_insert_node(struct drm_mm *mm, struct drm_mm_node *node,
+		       unsigned long size, unsigned alignment)
+{
+	struct drm_mm_node *hole_node;
 
-	if (align_splitoff)
-		drm_mm_put_block(align_splitoff);
+	hole_node = drm_mm_search_free(mm, size, alignment, 0);
+	if (!hole_node)
+		return -ENOSPC;
 
-	return node;
+	drm_mm_insert_helper(hole_node, node, size, alignment);
+
+	return 0;
 }
-EXPORT_SYMBOL(drm_mm_get_block_generic);
+EXPORT_SYMBOL(drm_mm_insert_node);
 
-struct drm_mm_node *drm_mm_get_block_range_generic(struct drm_mm_node *node,
-						unsigned long size,
-						unsigned alignment,
-						unsigned long start,
-						unsigned long end,
-						int atomic)
+static void drm_mm_insert_helper_range(struct drm_mm_node *hole_node,
+				       struct drm_mm_node *node,
+				       unsigned long size, unsigned alignment,
+				       unsigned long start, unsigned long end)
 {
-	struct drm_mm_node *align_splitoff = NULL;
-	unsigned tmp = 0;
-	unsigned wasted = 0;
+	struct drm_mm *mm = hole_node->mm;
+	unsigned long tmp = 0, wasted = 0;
+	unsigned long hole_start = drm_mm_hole_node_start(hole_node);
+	unsigned long hole_end = drm_mm_hole_node_end(hole_node);
+
+	BUG_ON(!hole_node->hole_follows || node->allocated);
 
-	if (node->start < start)
-		wasted += start - node->start;
+	if (hole_start < start)
+		wasted += start - hole_start;
 	if (alignment)
-		tmp = ((node->start + wasted) % alignment);
+		tmp = (hole_start + wasted) % alignment;
 
 	if (tmp)
 		wasted += alignment - tmp;
-	if (wasted) {
-		align_splitoff = drm_mm_split_at_start(node, wasted, atomic);
-		if (unlikely(align_splitoff == NULL))
-			return NULL;
+
+	if (!wasted) {
+		hole_node->hole_follows = 0;
+		list_del_init(&hole_node->hole_stack);
 	}
 
-	if (node->size == size) {
-		list_del_init(&node->free_stack);
-		node->free = 0;
+	node->start = hole_start + wasted;
+	node->size = size;
+	node->mm = mm;
+	node->allocated = 1;
+
+	INIT_LIST_HEAD(&node->hole_stack);
+	list_add(&node->node_list, &hole_node->node_list);
+
+	BUG_ON(node->start + node->size > hole_end);
+	BUG_ON(node->start + node->size > end);
+
+	if (node->start + node->size < hole_end) {
+		list_add(&node->hole_stack, &mm->hole_stack);
+		node->hole_follows = 1;
 	} else {
-		node = drm_mm_split_at_start(node, size, atomic);
+		node->hole_follows = 0;
 	}
+}
 
-	if (align_splitoff)
-		drm_mm_put_block(align_splitoff);
+struct drm_mm_node *drm_mm_get_block_range_generic(struct drm_mm_node *hole_node,
+						unsigned long size,
+						unsigned alignment,
+						unsigned long start,
+						unsigned long end,
+						int atomic)
+{
+	struct drm_mm_node *node;
+
+	node = drm_mm_kmalloc(hole_node->mm, atomic);
+	if (unlikely(node == NULL))
+		return NULL;
+
+	drm_mm_insert_helper_range(hole_node, node, size, alignment,
+				   start, end);
 
 	return node;
 }
 EXPORT_SYMBOL(drm_mm_get_block_range_generic);
 
-/*
- * Put a block. Merge with the previous and / or next block if they are free.
- * Otherwise add to the free stack.
+/**
+ * Search for free space and insert a preallocated memory node. Returns
+ * -ENOSPC if no suitable free area is available. This is for range
+ * restricted allocations. The preallocated memory node must be cleared.
  */
-
-void drm_mm_put_block(struct drm_mm_node *cur)
+int drm_mm_insert_node_in_range(struct drm_mm *mm, struct drm_mm_node *node,
+				unsigned long size, unsigned alignment,
+				unsigned long start, unsigned long end)
 {
+	struct drm_mm_node *hole_node;
 
-	struct drm_mm *mm = cur->mm;
-	struct list_head *cur_head = &cur->node_list;
-	struct list_head *root_head = &mm->node_list;
-	struct drm_mm_node *prev_node = NULL;
-	struct drm_mm_node *next_node;
+	hole_node = drm_mm_search_free_in_range(mm, size, alignment,
+						start, end, 0);
+	if (!hole_node)
+		return -ENOSPC;
 
-	int merged = 0;
+	drm_mm_insert_helper_range(hole_node, node, size, alignment,
+				   start, end);
 
-	BUG_ON(cur->scanned_block || cur->scanned_prev_free
-				  || cur->scanned_next_free);
+	return 0;
+}
+EXPORT_SYMBOL(drm_mm_insert_node_in_range);
 
-	if (cur_head->prev != root_head) {
-		prev_node =
-		    list_entry(cur_head->prev, struct drm_mm_node, node_list);
-		if (prev_node->free) {
-			prev_node->size += cur->size;
-			merged = 1;
-		}
-	}
-	if (cur_head->next != root_head) {
-		next_node =
-		    list_entry(cur_head->next, struct drm_mm_node, node_list);
-		if (next_node->free) {
-			if (merged) {
-				prev_node->size += next_node->size;
-				list_del(&next_node->node_list);
-				list_del(&next_node->free_stack);
-				spin_lock(&mm->unused_lock);
-				if (mm->num_unused < MM_UNUSED_TARGET) {
-					list_add(&next_node->free_stack,
-						 &mm->unused_nodes);
-					++mm->num_unused;
-				} else
-					kfree(next_node);
-				spin_unlock(&mm->unused_lock);
-			} else {
-				next_node->size += cur->size;
-				next_node->start = cur->start;
-				merged = 1;
-			}
-		}
-	}
-	if (!merged) {
-		cur->free = 1;
-		list_add(&cur->free_stack, &mm->free_stack);
-	} else {
-		list_del(&cur->node_list);
-		spin_lock(&mm->unused_lock);
-		if (mm->num_unused < MM_UNUSED_TARGET) {
-			list_add(&cur->free_stack, &mm->unused_nodes);
-			++mm->num_unused;
-		} else
-			kfree(cur);
-		spin_unlock(&mm->unused_lock);
-	}
+/**
+ * Remove a memory node from the allocator.
+ */
+void drm_mm_remove_node(struct drm_mm_node *node)
+{
+	struct drm_mm *mm = node->mm;
+	struct drm_mm_node *prev_node;
+
+	BUG_ON(node->scanned_block || node->scanned_prev_free
+				   || node->scanned_next_free);
+
+	prev_node =
+	    list_entry(node->node_list.prev, struct drm_mm_node, node_list);
+
+	if (node->hole_follows) {
+		BUG_ON(drm_mm_hole_node_start(node)
+				== drm_mm_hole_node_end(node));
+		list_del(&node->hole_stack);
+	} else
+		BUG_ON(drm_mm_hole_node_start(node)
+				!= drm_mm_hole_node_end(node));
+
+	if (!prev_node->hole_follows) {
+		prev_node->hole_follows = 1;
+		list_add(&prev_node->hole_stack, &mm->hole_stack);
+	} else
+		list_move(&prev_node->hole_stack, &mm->hole_stack);
+
+	list_del(&node->node_list);
+	node->allocated = 0;
 }
+EXPORT_SYMBOL(drm_mm_remove_node);
+
+/*
+ * Remove a memory node from the allocator and free the allocated struct
+ * drm_mm_node. Only to be used on a struct drm_mm_node obtained by one of the
+ * drm_mm_get_block functions.
+ */
+void drm_mm_put_block(struct drm_mm_node *node)
+{
 
+	struct drm_mm *mm = node->mm;
+
+	drm_mm_remove_node(node);
+
+	spin_lock(&mm->unused_lock);
+	if (mm->num_unused < MM_UNUSED_TARGET) {
+		list_add(&node->node_list, &mm->unused_nodes);
+		++mm->num_unused;
+	} else
+		kfree(node);
+	spin_unlock(&mm->unused_lock);
+}
 EXPORT_SYMBOL(drm_mm_put_block);
 
 static int check_free_hole(unsigned long start, unsigned long end,
@@ -319,8 +366,10 @@ struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm,
 	best = NULL;
 	best_size = ~0UL;
 
-	list_for_each_entry(entry, &mm->free_stack, free_stack) {
-		if (!check_free_hole(entry->start, entry->start + entry->size,
+	list_for_each_entry(entry, &mm->hole_stack, hole_stack) {
+		BUG_ON(!entry->hole_follows);
+		if (!check_free_hole(drm_mm_hole_node_start(entry),
+				     drm_mm_hole_node_end(entry),
 				     size, alignment))
 			continue;
 
@@ -353,12 +402,13 @@ struct drm_mm_node *drm_mm_search_free_in_range(const struct drm_mm *mm,
 	best = NULL;
 	best_size = ~0UL;
 
-	list_for_each_entry(entry, &mm->free_stack, free_stack) {
-		unsigned long adj_start = entry->start < start ?
-			start : entry->start;
-		unsigned long adj_end = entry->start + entry->size > end ?
-			end : entry->start + entry->size;
+	list_for_each_entry(entry, &mm->hole_stack, hole_stack) {
+		unsigned long adj_start = drm_mm_hole_node_start(entry) < start ?
+			start : drm_mm_hole_node_start(entry);
+		unsigned long adj_end = drm_mm_hole_node_end(entry) > end ?
+			end : drm_mm_hole_node_end(entry);
 
+		BUG_ON(!entry->hole_follows);
 		if (!check_free_hole(adj_start, adj_end, size, alignment))
 			continue;
 
@@ -376,6 +426,23 @@ struct drm_mm_node *drm_mm_search_free_in_range(const struct drm_mm *mm,
 EXPORT_SYMBOL(drm_mm_search_free_in_range);
 
 /**
+ * Moves an allocation. To be used with embedded struct drm_mm_node.
+ */
+void drm_mm_replace_node(struct drm_mm_node *old, struct drm_mm_node *new)
+{
+	list_replace(&old->node_list, &new->node_list);
+	list_replace(&old->node_list, &new->hole_stack);
+	new->hole_follows = old->hole_follows;
+	new->mm = old->mm;
+	new->start = old->start;
+	new->size = old->size;
+
+	old->allocated = 0;
+	new->allocated = 1;
+}
+EXPORT_SYMBOL(drm_mm_replace_node);
+
+/**
  * Initializa lru scanning.
  *
  * This simply sets up the scanning routines with the parameters for the desired
@@ -393,6 +460,7 @@ void drm_mm_init_scan(struct drm_mm *mm, unsigned long size,
 	mm->scan_hit_start = 0;
 	mm->scan_hit_size = 0;
 	mm->scan_check_range = 0;
+	mm->prev_scanned_node = NULL;
 }
 EXPORT_SYMBOL(drm_mm_init_scan);
 
@@ -418,6 +486,7 @@ void drm_mm_init_scan_with_range(struct drm_mm *mm, unsigned long size,
 	mm->scan_start = start;
 	mm->scan_end = end;
 	mm->scan_check_range = 1;
+	mm->prev_scanned_node = NULL;
 }
 EXPORT_SYMBOL(drm_mm_init_scan_with_range);
 
@@ -430,70 +499,42 @@ EXPORT_SYMBOL(drm_mm_init_scan_with_range);
 int drm_mm_scan_add_block(struct drm_mm_node *node)
 {
 	struct drm_mm *mm = node->mm;
-	struct list_head *prev_free, *next_free;
-	struct drm_mm_node *prev_node, *next_node;
+	struct drm_mm_node *prev_node;
+	unsigned long hole_start, hole_end;
 	unsigned long adj_start;
 	unsigned long adj_end;
 
 	mm->scanned_blocks++;
 
-	prev_free = next_free = NULL;
-
-	BUG_ON(node->free);
+	BUG_ON(node->scanned_block);
 	node->scanned_block = 1;
-	node->free = 1;
-
-	if (node->node_list.prev != &mm->node_list) {
-		prev_node = list_entry(node->node_list.prev, struct drm_mm_node,
-				       node_list);
-
-		if (prev_node->free) {
-			list_del(&prev_node->node_list);
 
-			node->start = prev_node->start;
-			node->size += prev_node->size;
+	prev_node = list_entry(node->node_list.prev, struct drm_mm_node,
+			       node_list);
 
-			prev_node->scanned_prev_free = 1;
-
-			prev_free = &prev_node->free_stack;
-		}
-	}
-
-	if (node->node_list.next != &mm->node_list) {
-		next_node = list_entry(node->node_list.next, struct drm_mm_node,
-				       node_list);
-
-		if (next_node->free) {
-			list_del(&next_node->node_list);
-
-			node->size += next_node->size;
-
-			next_node->scanned_next_free = 1;
-
-			next_free = &next_node->free_stack;
-		}
-	}
-
-	/* The free_stack list is not used for allocated objects, so these two
-	 * pointers can be abused (as long as no allocations in this memory
-	 * manager happens). */
-	node->free_stack.prev = prev_free;
-	node->free_stack.next = next_free;
+	node->scanned_preceeds_hole = prev_node->hole_follows;
+	prev_node->hole_follows = 1;
+	list_del(&node->node_list);
+	node->node_list.prev = &prev_node->node_list;
+	node->node_list.next = &mm->prev_scanned_node->node_list;
+	mm->prev_scanned_node = node;
 
+	hole_start = drm_mm_hole_node_start(prev_node);
+	hole_end = drm_mm_hole_node_end(prev_node);
 	if (mm->scan_check_range) {
-		adj_start = node->start < mm->scan_start ?
-			mm->scan_start : node->start;
-		adj_end = node->start + node->size > mm->scan_end ?
-			mm->scan_end : node->start + node->size;
+		adj_start = hole_start < mm->scan_start ?
+			mm->scan_start : hole_start;
+		adj_end = hole_end > mm->scan_end ?
+			mm->scan_end : hole_end;
 	} else {
-		adj_start = node->start;
-		adj_end = node->start + node->size;
+		adj_start = hole_start;
+		adj_end = hole_end;
 	}
 
 	if (check_free_hole(adj_start , adj_end,
 			    mm->scan_size, mm->scan_alignment)) {
-		mm->scan_hit_start = node->start;
-		mm->scan_hit_size = node->size;
+		mm->scan_hit_start = hole_start;
+		mm->scan_hit_size = hole_end;
 
 		return 1;
 	}
@@ -519,39 +560,19 @@ EXPORT_SYMBOL(drm_mm_scan_add_block);
 int drm_mm_scan_remove_block(struct drm_mm_node *node)
 {
 	struct drm_mm *mm = node->mm;
-	struct drm_mm_node *prev_node, *next_node;
+	struct drm_mm_node *prev_node;
 
 	mm->scanned_blocks--;
 
 	BUG_ON(!node->scanned_block);
 	node->scanned_block = 0;
-	node->free = 0;
-
-	prev_node = list_entry(node->free_stack.prev, struct drm_mm_node,
-			       free_stack);
-	next_node = list_entry(node->free_stack.next, struct drm_mm_node,
-			       free_stack);
 
-	if (prev_node) {
-		BUG_ON(!prev_node->scanned_prev_free);
-		prev_node->scanned_prev_free = 0;
-
-		list_add_tail(&prev_node->node_list, &node->node_list);
-
-		node->start = prev_node->start + prev_node->size;
-		node->size -= prev_node->size;
-	}
+	prev_node = list_entry(node->node_list.prev, struct drm_mm_node,
+			       node_list);
 
-	if (next_node) {
-		BUG_ON(!next_node->scanned_next_free);
-		next_node->scanned_next_free = 0;
-
-		list_add(&next_node->node_list, &node->node_list);
-
-		node->size -= next_node->size;
-	}
-
-	INIT_LIST_HEAD(&node->free_stack);
+	prev_node->hole_follows = node->scanned_preceeds_hole;
+	INIT_LIST_HEAD(&node->node_list);
+	list_add(&node->node_list, &prev_node->node_list);
 
 	/* Only need to check for containement because start&size for the
 	 * complete resulting free block (not just the desired part) is
@@ -568,7 +589,7 @@ EXPORT_SYMBOL(drm_mm_scan_remove_block);
 
 int drm_mm_clean(struct drm_mm * mm)
 {
-	struct list_head *head = &mm->node_list;
+	struct list_head *head = &mm->head_node.node_list;
 
 	return (head->next->next == head);
 }
@@ -576,38 +597,40 @@ EXPORT_SYMBOL(drm_mm_clean);
 
 int drm_mm_init(struct drm_mm * mm, unsigned long start, unsigned long size)
 {
-	INIT_LIST_HEAD(&mm->node_list);
-	INIT_LIST_HEAD(&mm->free_stack);
+	INIT_LIST_HEAD(&mm->hole_stack);
 	INIT_LIST_HEAD(&mm->unused_nodes);
 	mm->num_unused = 0;
 	mm->scanned_blocks = 0;
 	spin_lock_init(&mm->unused_lock);
 
-	return drm_mm_create_tail_node(mm, start, size, 0);
+	/* Clever trick to avoid a special case in the free hole tracking. */
+	INIT_LIST_HEAD(&mm->head_node.node_list);
+	INIT_LIST_HEAD(&mm->head_node.hole_stack);
+	mm->head_node.hole_follows = 1;
+	mm->head_node.scanned_block = 0;
+	mm->head_node.scanned_prev_free = 0;
+	mm->head_node.scanned_next_free = 0;
+	mm->head_node.mm = mm;
+	mm->head_node.start = start + size;
+	mm->head_node.size = start - mm->head_node.start;
+	list_add_tail(&mm->head_node.hole_stack, &mm->hole_stack);
+
+	return 0;
 }
 EXPORT_SYMBOL(drm_mm_init);
 
 void drm_mm_takedown(struct drm_mm * mm)
 {
-	struct list_head *bnode = mm->free_stack.next;
-	struct drm_mm_node *entry;
-	struct drm_mm_node *next;
+	struct drm_mm_node *entry, *next;
 
-	entry = list_entry(bnode, struct drm_mm_node, free_stack);
-
-	if (entry->node_list.next != &mm->node_list ||
-	    entry->free_stack.next != &mm->free_stack) {
+	if (!list_empty(&mm->head_node.node_list)) {
 		DRM_ERROR("Memory manager not clean. Delaying takedown\n");
 		return;
 	}
 
-	list_del(&entry->free_stack);
-	list_del(&entry->node_list);
-	kfree(entry);
-
 	spin_lock(&mm->unused_lock);
-	list_for_each_entry_safe(entry, next, &mm->unused_nodes, free_stack) {
-		list_del(&entry->free_stack);
+	list_for_each_entry_safe(entry, next, &mm->unused_nodes, node_list) {
+		list_del(&entry->node_list);
 		kfree(entry);
 		--mm->num_unused;
 	}
@@ -620,19 +643,37 @@ EXPORT_SYMBOL(drm_mm_takedown);
 void drm_mm_debug_table(struct drm_mm *mm, const char *prefix)
 {
 	struct drm_mm_node *entry;
-	int total_used = 0, total_free = 0, total = 0;
-
-	list_for_each_entry(entry, &mm->node_list, node_list) {
-		printk(KERN_DEBUG "%s 0x%08lx-0x%08lx: %8ld: %s\n",
+	unsigned long total_used = 0, total_free = 0, total = 0;
+	unsigned long hole_start, hole_end, hole_size;
+
+	hole_start = drm_mm_hole_node_start(&mm->head_node);
+	hole_end = drm_mm_hole_node_end(&mm->head_node);
+	hole_size = hole_end - hole_start;
+	if (hole_size)
+		printk(KERN_DEBUG "%s 0x%08lx-0x%08lx: %8lu: free\n",
+			prefix, hole_start, hole_end,
+			hole_size);
+	total_free += hole_size;
+
+	drm_mm_for_each_node(entry, mm) {
+		printk(KERN_DEBUG "%s 0x%08lx-0x%08lx: %8lu: used\n",
 			prefix, entry->start, entry->start + entry->size,
-			entry->size, entry->free ? "free" : "used");
-		total += entry->size;
-		if (entry->free)
-			total_free += entry->size;
-		else
-			total_used += entry->size;
+			entry->size);
+		total_used += entry->size;
+
+		if (entry->hole_follows) {
+			hole_start = drm_mm_hole_node_start(entry);
+			hole_end = drm_mm_hole_node_end(entry);
+			hole_size = hole_end - hole_start;
+			printk(KERN_DEBUG "%s 0x%08lx-0x%08lx: %8lu: free\n",
+				prefix, hole_start, hole_end,
+				hole_size);
+			total_free += hole_size;
+		}
 	}
-	printk(KERN_DEBUG "%s total: %d, used %d free %d\n", prefix, total,
+	total = total_free + total_used;
+
+	printk(KERN_DEBUG "%s total: %lu, used %lu free %lu\n", prefix, total,
 		total_used, total_free);
 }
 EXPORT_SYMBOL(drm_mm_debug_table);
@@ -641,17 +682,34 @@ EXPORT_SYMBOL(drm_mm_debug_table);
 int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm)
 {
 	struct drm_mm_node *entry;
-	int total_used = 0, total_free = 0, total = 0;
-
-	list_for_each_entry(entry, &mm->node_list, node_list) {
-		seq_printf(m, "0x%08lx-0x%08lx: 0x%08lx: %s\n", entry->start, entry->start + entry->size, entry->size, entry->free ? "free" : "used");
-		total += entry->size;
-		if (entry->free)
-			total_free += entry->size;
-		else
-			total_used += entry->size;
+	unsigned long total_used = 0, total_free = 0, total = 0;
+	unsigned long hole_start, hole_end, hole_size;
+
+	hole_start = drm_mm_hole_node_start(&mm->head_node);
+	hole_end = drm_mm_hole_node_end(&mm->head_node);
+	hole_size = hole_end - hole_start;
+	if (hole_size)
+		seq_printf(m, "0x%08lx-0x%08lx: 0x%08lx: free\n",
+				hole_start, hole_end, hole_size);
+	total_free += hole_size;
+
+	drm_mm_for_each_node(entry, mm) {
+		seq_printf(m, "0x%08lx-0x%08lx: 0x%08lx: used\n",
+				entry->start, entry->start + entry->size,
+				entry->size);
+		total_used += entry->size;
+		if (entry->hole_follows) {
+			hole_start = drm_mm_hole_node_start(&mm->head_node);
+			hole_end = drm_mm_hole_node_end(&mm->head_node);
+			hole_size = hole_end - hole_start;
+			seq_printf(m, "0x%08lx-0x%08lx: 0x%08lx: free\n",
+					hole_start, hole_end, hole_size);
+			total_free += hole_size;
+		}
 	}
-	seq_printf(m, "total: %d, used %d free %d\n", total, total_used, total_free);
+	total = total_free + total_used;
+
+	seq_printf(m, "total: %lu, used %lu free %lu\n", total, total_used, total_free);
 	return 0;
 }
 EXPORT_SYMBOL(drm_mm_dump_table);