[PATCH 1/3] drm: Export routines for inserting preallocated nodes into the mm manager

[Chris Wilson]

Required by i915 in order to avoid the allocation in the middle of
manipulating the drm_mm lists.

Use a pair of stubs to preserve the existing EXPORT_SYMBOLs for
backporting; to be removed later.

Cc: Dave Airlie <airlied at redhat.com>
Cc: dri-devel at lists.freedesktop.org
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/drm_mm.c |   42 ++++++++++++++++++++++++++++++------------
 include/drm/drm_mm.h     |   27 +++++++++++++++++++++++----
 2 files changed, 53 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c
index 0761a03..d93dc05 100644
--- a/drivers/gpu/drm/drm_mm.c
+++ b/drivers/gpu/drm/drm_mm.c
@@ -184,19 +184,27 @@ EXPORT_SYMBOL(drm_mm_get_block_generic);
  * -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)
+int drm_mm_insert_node_generic(struct drm_mm *mm, struct drm_mm_node *node,
+			       unsigned long size, unsigned alignment,
+			       unsigned long color, int atomic)
 {
 	struct drm_mm_node *hole_node;
 
-	hole_node = drm_mm_search_free(mm, size, alignment, false);
+	hole_node = drm_mm_search_free_generic(mm, size, alignment,
+					       color, atomic);
 	if (!hole_node)
 		return -ENOSPC;
 
-	drm_mm_insert_helper(hole_node, node, size, alignment, 0);
-
+	drm_mm_insert_helper(hole_node, node, size, alignment, color);
 	return 0;
 }
+EXPORT_SYMBOL(drm_mm_insert_node_generic);
+
+int drm_mm_insert_node(struct drm_mm *mm, struct drm_mm_node *node,
+		       unsigned long size, unsigned alignment)
+{
+	return drm_mm_insert_node_generic(mm, node, size, alignment, 0, false);
+}
 EXPORT_SYMBOL(drm_mm_insert_node);
 
 static void drm_mm_insert_helper_range(struct drm_mm_node *hole_node,
@@ -275,22 +283,32 @@ EXPORT_SYMBOL(drm_mm_get_block_range_generic);
  * -ENOSPC if no suitable free area is available. This is for range
  * restricted allocations. The preallocated memory node must be cleared.
  */
-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)
+int drm_mm_insert_node_in_range_generic(struct drm_mm *mm, struct drm_mm_node *node,
+					unsigned long size, unsigned alignment, unsigned long color,
+					unsigned long start, unsigned long end,
+					int atomic)
 {
 	struct drm_mm_node *hole_node;
 
-	hole_node = drm_mm_search_free_in_range(mm, size, alignment,
-						start, end, false);
+	hole_node = drm_mm_search_free_in_range_generic(mm,
+							size, alignment, color,
+							start, end, atomic);
 	if (!hole_node)
 		return -ENOSPC;
 
-	drm_mm_insert_helper_range(hole_node, node, size, alignment, 0,
+	drm_mm_insert_helper_range(hole_node, node,
+				   size, alignment, color,
 				   start, end);
-
 	return 0;
 }
+EXPORT_SYMBOL(drm_mm_insert_node_in_range_generic);
+
+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)
+{
+	return drm_mm_insert_node_in_range_generic(mm, node, size, alignment, 0, start, end, false);
+}
 EXPORT_SYMBOL(drm_mm_insert_node_in_range);
 
 /**
diff --git a/include/drm/drm_mm.h b/include/drm/drm_mm.h
index 06d7f79..87b0968 100644
--- a/include/drm/drm_mm.h
+++ b/include/drm/drm_mm.h
@@ -158,12 +158,31 @@ static inline struct drm_mm_node *drm_mm_get_block_atomic_range(
 	return drm_mm_get_block_range_generic(parent, size, alignment, 0,
 						start, end, 1);
 }
-extern int drm_mm_insert_node(struct drm_mm *mm, struct drm_mm_node *node,
-			      unsigned long size, unsigned alignment);
+
+extern int drm_mm_insert_node(struct drm_mm *mm,
+			      struct drm_mm_node *node,
+			      unsigned long size,
+			      unsigned alignment);
 extern 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);
+				       unsigned long size,
+				       unsigned alignment,
+				       unsigned long start,
+				       unsigned long end);
+extern int drm_mm_insert_node_generic(struct drm_mm *mm,
+				      struct drm_mm_node *node,
+				      unsigned long size,
+				      unsigned alignment,
+				      unsigned long color,
+				      int atomic);
+extern int drm_mm_insert_node_in_range_generic(struct drm_mm *mm,
+				       struct drm_mm_node *node,
+				       unsigned long size,
+				       unsigned alignment,
+				       unsigned long color,
+				       unsigned long start,
+				       unsigned long end,
+				       int atomic);
 extern void drm_mm_put_block(struct drm_mm_node *cur);
 extern void drm_mm_remove_node(struct drm_mm_node *node);
 extern void drm_mm_replace_node(struct drm_mm_node *old, struct drm_mm_node *new);
-- 
1.7.10.4