drm_mm: add support for range-restricted fair-lru scans

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 7 insertions, 0 deletions

diff --git a/include/drm/drm_mm.h b/include/drm/drm_mm.h
index bf01531193d5..e39177778601 100644
--- a/include/drm/drm_mm.h
+++ b/include/drm/drm_mm.h
@@ -62,11 +62,14 @@ struct drm_mm {
         struct list_head unused_nodes;
         int num_unused;
         spinlock_t unused_lock;
+        unsigned int scan_check_range : 1;
         unsigned scan_alignment;
         unsigned long scan_size;
         unsigned long scan_hit_start;
         unsigned scan_hit_size;
         unsigned scanned_blocks;
+        unsigned long scan_start;
+        unsigned long scan_end;
 };
 
 /*
@@ -145,6 +148,10 @@ static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block)
 
 void drm_mm_init_scan(struct drm_mm *mm, unsigned long size,
                       unsigned alignment);
+void drm_mm_init_scan_with_range(struct drm_mm *mm, unsigned long size,
+                                 unsigned alignment,
+                                 unsigned long start,
+                                 unsigned long end);
 int drm_mm_scan_add_block(struct drm_mm_node *node);
 int drm_mm_scan_remove_block(struct drm_mm_node *node);