drm: Change create block to reserve node
With the previous patch we no longer actually create a node, we simply
find the correct hole and occupy it. This very well could have been
squashed with the last patch, but since I already had David's review, I
figured it's easiest to keep it distinct.
Also update the users in i915. Conveniently this is the only user of the
interface.
CC: David Airlie <airlied@linux.ie>
CC: <dri-devel@lists.freedesktop.org>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Acked-by: David Airlie <airlied@linux.ie>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c
index 9e8dfbc..52e0ee7 100644
--- a/drivers/gpu/drm/drm_mm.c
+++ b/drivers/gpu/drm/drm_mm.c
@@ -147,27 +147,27 @@
}
}
-int drm_mm_create_block(struct drm_mm *mm, struct drm_mm_node *node,
- unsigned long start, unsigned long size)
+int drm_mm_reserve_node(struct drm_mm *mm, struct drm_mm_node *node)
{
struct drm_mm_node *hole;
- unsigned long end = start + size;
+ unsigned long end = node->start + node->size;
unsigned long hole_start;
unsigned long hole_end;
+ BUG_ON(node == NULL);
+
+ /* Find the relevant hole to add our node to */
drm_mm_for_each_hole(hole, mm, hole_start, hole_end) {
- if (hole_start > start || hole_end < end)
+ if (hole_start > node->start || hole_end < end)
continue;
- node->start = start;
- node->size = size;
node->mm = mm;
node->allocated = 1;
INIT_LIST_HEAD(&node->hole_stack);
list_add(&node->node_list, &hole->node_list);
- if (start == hole_start) {
+ if (node->start == hole_start) {
hole->hole_follows = 0;
list_del_init(&hole->hole_stack);
}
@@ -181,10 +181,11 @@
return 0;
}
- WARN(1, "no hole found for block 0x%lx + 0x%lx\n", start, size);
+ WARN(1, "no hole found for node 0x%lx + 0x%lx\n",
+ node->start, node->size);
return -ENOSPC;
}
-EXPORT_SYMBOL(drm_mm_create_block);
+EXPORT_SYMBOL(drm_mm_reserve_node);
struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *hole_node,
unsigned long size,
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 88180a5..afba7e5 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -640,10 +640,10 @@
obj->gtt_offset);
continue;
}
- ret = drm_mm_create_block(&dev_priv->mm.gtt_space,
- obj->gtt_space,
- obj->gtt_offset,
- obj->base.size);
+ obj->gtt_space->start = obj->gtt_offset;
+ obj->gtt_space->size = obj->base.size;
+ ret = drm_mm_reserve_node(&dev_priv->mm.gtt_space,
+ obj->gtt_space);
if (ret) {
DRM_DEBUG_KMS("Reservation failed\n");
kfree(obj->gtt_space);
diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c
index 2746ff2..4e6dbbb 100644
--- a/drivers/gpu/drm/i915/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
@@ -349,8 +349,9 @@
if (!stolen)
return NULL;
- ret = drm_mm_create_block(&dev_priv->mm.stolen, stolen, stolen_offset,
- size);
+ stolen->start = stolen_offset;
+ stolen->size = size;
+ ret = drm_mm_reserve_node(&dev_priv->mm.stolen, stolen);
if (ret) {
DRM_DEBUG_KMS("failed to allocate stolen space\n");
kfree(stolen);
@@ -380,9 +381,10 @@
goto unref_out;
}
- ret = drm_mm_create_block(&dev_priv->mm.gtt_space,
- obj->gtt_space,
- gtt_offset, size);
+ obj->gtt_space->start = gtt_offset;
+ obj->gtt_space->size = size;
+ ret = drm_mm_reserve_node(&dev_priv->mm.gtt_space,
+ obj->gtt_space);
if (ret) {
DRM_DEBUG_KMS("failed to allocate stolen GTT space\n");
goto free_out;
diff --git a/include/drm/drm_mm.h b/include/drm/drm_mm.h
index d8b56b7..2de91e3 100644
--- a/include/drm/drm_mm.h
+++ b/include/drm/drm_mm.h
@@ -138,10 +138,7 @@
/*
* Basic range manager support (drm_mm.c)
*/
-extern int drm_mm_create_block(struct drm_mm *mm,
- struct drm_mm_node *node,
- unsigned long start,
- unsigned long size);
+extern int drm_mm_reserve_node(struct drm_mm *mm, struct drm_mm_node *node);
extern struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node,
unsigned long size,
unsigned alignment,