drm/buddy: Move internal helpers to buddy.c

Move gpu_buddy_block_state(), gpu_buddy_block_is_allocated(),
and gpu_buddy_block_is_split() from gpu_buddy.h to gpu_buddy.c
as static functions since they have no external callers.

Remove gpu_get_buddy() as it was an unused exported wrapper
around the internal __get_buddy().

No functional changes.

v2:
- Rebased after DRM buddy allocator moved to drivers/gpu/
- Keep gpu_buddy_block_is_free() in header since it's now
  used by drm_buddy.c
- Updated commit message

Cc: Christian König <christian.koenig@amd.com>
Cc: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Suggested-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Sanjay Yadav <sanjay.kumar.yadav@intel.com>
Reviewed-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Link: https://patch.msgid.link/20260212092527.718455-6-sanjay.kumar.yadav@intel.com

2 files changed, 20 insertions, 40 deletions

diff --git a/drivers/gpu/buddy.c b/drivers/gpu/buddy.c
index 603c59a2013a..b27761246d4b 100644
--- a/drivers/gpu/buddy.c
+++ b/drivers/gpu/buddy.c
@@ -14,6 +14,24 @@
 
 static struct kmem_cache *slab_blocks;
 
+static unsigned int
+gpu_buddy_block_state(struct gpu_buddy_block *block)
+{
+	return block->header & GPU_BUDDY_HEADER_STATE;
+}
+
+static bool
+gpu_buddy_block_is_allocated(struct gpu_buddy_block *block)
+{
+	return gpu_buddy_block_state(block) == GPU_BUDDY_ALLOCATED;
+}
+
+static bool
+gpu_buddy_block_is_split(struct gpu_buddy_block *block)
+{
+	return gpu_buddy_block_state(block) == GPU_BUDDY_SPLIT;
+}
+
 static struct gpu_buddy_block *gpu_block_alloc(struct gpu_buddy *mm,
 					       struct gpu_buddy_block *parent,
 					       unsigned int order,
@@ -450,23 +468,6 @@ static int split_block(struct gpu_buddy *mm,
 }
 
 /**
- * gpu_get_buddy - get buddy address
- *
- * @block: GPU buddy block
- *
- * Returns the corresponding buddy block for @block, or NULL
- * if this is a root block and can't be merged further.
- * Requires some kind of locking to protect against
- * any concurrent allocate and free operations.
- */
-struct gpu_buddy_block *
-gpu_get_buddy(struct gpu_buddy_block *block)
-{
-	return __get_buddy(block);
-}
-EXPORT_SYMBOL(gpu_get_buddy);
-
-/**
  * gpu_buddy_reset_clear - reset blocks clear state
  *
  * @mm: GPU buddy manager
diff --git a/include/linux/gpu_buddy.h b/include/linux/gpu_buddy.h
index bf2a42256536..f1fb6eff604a 100644
--- a/include/linux/gpu_buddy.h
+++ b/include/linux/gpu_buddy.h
@@ -191,16 +191,10 @@ gpu_buddy_block_order(struct gpu_buddy_block *block)
 	return block->header & GPU_BUDDY_HEADER_ORDER;
 }
 
-static inline unsigned int
-gpu_buddy_block_state(struct gpu_buddy_block *block)
-{
-	return block->header & GPU_BUDDY_HEADER_STATE;
-}
-
 static inline bool
-gpu_buddy_block_is_allocated(struct gpu_buddy_block *block)
+gpu_buddy_block_is_free(struct gpu_buddy_block *block)
 {
-	return gpu_buddy_block_state(block) == GPU_BUDDY_ALLOCATED;
+	return (block->header & GPU_BUDDY_HEADER_STATE) == GPU_BUDDY_FREE;
 }
 
 static inline bool
@@ -209,18 +203,6 @@ gpu_buddy_block_is_clear(struct gpu_buddy_block *block)
 	return block->header & GPU_BUDDY_HEADER_CLEAR;
 }
 
-static inline bool
-gpu_buddy_block_is_free(struct gpu_buddy_block *block)
-{
-	return gpu_buddy_block_state(block) == GPU_BUDDY_FREE;
-}
-
-static inline bool
-gpu_buddy_block_is_split(struct gpu_buddy_block *block)
-{
-	return gpu_buddy_block_state(block) == GPU_BUDDY_SPLIT;
-}
-
 static inline u64
 gpu_buddy_block_size(struct gpu_buddy *mm,
 		     struct gpu_buddy_block *block)
@@ -232,9 +214,6 @@ int gpu_buddy_init(struct gpu_buddy *mm, u64 size, u64 chunk_size);
 
 void gpu_buddy_fini(struct gpu_buddy *mm);
 
-struct gpu_buddy_block *
-gpu_get_buddy(struct gpu_buddy_block *block);
-
 int gpu_buddy_alloc_blocks(struct gpu_buddy *mm,
 			   u64 start, u64 end, u64 size,
 			   u64 min_page_size,