diff options
Diffstat (limited to 'include/drm/drm_buddy.h')
| -rw-r--r-- | include/drm/drm_buddy.h | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/include/drm/drm_buddy.h b/include/drm/drm_buddy.h index a5b39fc010..2a74fa9d0c 100644 --- a/include/drm/drm_buddy.h +++ b/include/drm/drm_buddy.h @@ -25,6 +25,8 @@ #define DRM_BUDDY_RANGE_ALLOCATION BIT(0) #define DRM_BUDDY_TOPDOWN_ALLOCATION BIT(1) #define DRM_BUDDY_CONTIGUOUS_ALLOCATION BIT(2) +#define DRM_BUDDY_CLEAR_ALLOCATION BIT(3) +#define DRM_BUDDY_CLEARED BIT(4) struct drm_buddy_block { #define DRM_BUDDY_HEADER_OFFSET GENMASK_ULL(63, 12) @@ -32,8 +34,9 @@ struct drm_buddy_block { #define DRM_BUDDY_ALLOCATED (1 << 10) #define DRM_BUDDY_FREE (2 << 10) #define DRM_BUDDY_SPLIT (3 << 10) +#define DRM_BUDDY_HEADER_CLEAR GENMASK_ULL(9, 9) /* Free to be used, if needed in the future */ -#define DRM_BUDDY_HEADER_UNUSED GENMASK_ULL(9, 6) +#define DRM_BUDDY_HEADER_UNUSED GENMASK_ULL(8, 6) #define DRM_BUDDY_HEADER_ORDER GENMASK_ULL(5, 0) u64 header; @@ -53,8 +56,8 @@ struct drm_buddy_block { struct list_head tmp_link; }; -/* Order-zero must be at least PAGE_SIZE */ -#define DRM_BUDDY_MAX_ORDER (63 - PAGE_SHIFT) +/* Order-zero must be at least SZ_4K */ +#define DRM_BUDDY_MAX_ORDER (63 - 12) /* * Binary Buddy System. @@ -82,10 +85,11 @@ struct drm_buddy { unsigned int n_roots; unsigned int max_order; - /* Must be at least PAGE_SIZE */ + /* Must be at least SZ_4K */ u64 chunk_size; u64 size; u64 avail; + u64 clear_avail; }; static inline u64 @@ -113,6 +117,12 @@ drm_buddy_block_is_allocated(struct drm_buddy_block *block) } static inline bool +drm_buddy_block_is_clear(struct drm_buddy_block *block) +{ + return block->header & DRM_BUDDY_HEADER_CLEAR; +} + +static inline bool drm_buddy_block_is_free(struct drm_buddy_block *block) { return drm_buddy_block_state(block) == DRM_BUDDY_FREE; @@ -150,7 +160,9 @@ int drm_buddy_block_trim(struct drm_buddy *mm, void drm_buddy_free_block(struct drm_buddy *mm, struct drm_buddy_block *block); -void drm_buddy_free_list(struct drm_buddy *mm, struct list_head *objects); +void drm_buddy_free_list(struct drm_buddy *mm, + struct list_head *objects, + unsigned int flags); void drm_buddy_print(struct drm_buddy *mm, struct drm_printer *p); void drm_buddy_block_print(struct drm_buddy *mm, |