Some clients would like to iterate over every node within a certain
range. Make a nice little macro for them to hide the mixing of the
rbtree search and linear walk.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
---
drivers/gpu/drm/drm_mm.c | 11 ++---------
include/drm/drm_mm.h | 8 +++++---
2 files changed, 7 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c
index 632473beb40c..f8eebbde376e 100644
--- a/drivers/gpu/drm/drm_mm.c
+++ b/drivers/gpu/drm/drm_mm.c
@@ -174,19 +174,12 @@ INTERVAL_TREE_DEFINE(struct drm_mm_node, rb,
START, LAST, static inline, drm_mm_interval_tree)
struct drm_mm_node *
-drm_mm_interval_first(struct drm_mm *mm, u64 start, u64 last)
+__drm_mm_interval_first(struct drm_mm *mm, u64 start, u64 last)
{
return drm_mm_interval_tree_iter_first(&mm->interval_tree,
start, last);
}
-EXPORT_SYMBOL(drm_mm_interval_first);
-
-struct drm_mm_node *
-drm_mm_interval_next(struct drm_mm_node *node, u64 start, u64 last)
-{
- return drm_mm_interval_tree_iter_next(node, start, last);
-}
-EXPORT_SYMBOL(drm_mm_interval_next);
+EXPORT_SYMBOL(__drm_mm_interval_first);
static void drm_mm_interval_tree_add_node(struct drm_mm_node *hole_node,
struct drm_mm_node *node)
diff --git a/include/drm/drm_mm.h b/include/drm/drm_mm.h
index 41ddafe92b2f..fca5f313cf18 100644
--- a/include/drm/drm_mm.h
+++ b/include/drm/drm_mm.h
@@ -308,10 +308,12 @@ void drm_mm_takedown(struct drm_mm *mm);
bool drm_mm_clean(struct drm_mm *mm);
struct drm_mm_node *
-drm_mm_interval_first(struct drm_mm *mm, u64 start, u64 last);
+__drm_mm_interval_first(struct drm_mm *mm, u64 start, u64 last);
-struct drm_mm_node *
-drm_mm_interval_next(struct drm_mm_node *node, u64 start, u64 last);
+#define drm_mm_for_each_node_in_range(node, mm, start, end) \
+ for (node = __drm_mm_interval_first((mm), (start), (end)-1); \
+ node && node->start < (end); \
+ node = list_next_entry(node, node_list)) \
void drm_mm_init_scan(struct drm_mm *mm,
u64 size,
--
2.10.2
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