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drm/buddy: Move internal helpers to buddy.c

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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
This commit is contained in:
Sanjay Yadav 2026-02-12 14:55:30 +05:30 committed by Arunpravin Paneer Selvam
parent 5cab6d386b
commit df8c7892e0
2 changed files with 20 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
drivers/gpu/buddy.c
View File

@ -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,
@ -449,23 +467,6 @@ static int split_block(struct gpu_buddy *mm,
return 0;
}
/**
* 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
*

25
include/linux/gpu_buddy.h
View File

@ -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,