[PATCH v2 0/2] drm/buddy: Documentation and internal helper cleanup

[Sanjay Yadav <sanjay.kumar.yadav@intel.com>]

This series improves the GPU buddy allocator by adding missing
documentation and cleaning up internal helpers.

It adds kernel-doc for the allocator structures and flags, covering
gpu_buddy, gpu_buddy_block, and the allocation flags (RANGE, TOPDOWN,
CONTIGUOUS, CLEAR, TRIM_DISABLE) to make the allocator’s design and usage
clearer for readers and contributors.

It also reduces the header surface by moving internal helpers from
gpu_buddy.h into buddy.c as static functions, since they have no
external users, and removes gpu_get_buddy(), an unused exported wrapper
around the internal __get_buddy() helper. This clarifies the intended API
and avoids exporting unused symbols.

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
- Corrected GPU_BUDDY_CLEAR_TREE and GPU_BUDDY_DIRTY_TREE index values (Arun)
- Updated commit message and cover letter to reflect changes

Cc: Christian König <christian.koenig@amd.com>
Cc: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Suggested-by: Matthew Auld <matthew.auld@intel.com>

Sanjay Yadav (2):
  drm/buddy: Add kernel-doc for allocator structures and flags
  drm/buddy: Move internal helpers to buddy.c

 drivers/gpu/buddy.c       |  35 ++++-----
 include/linux/gpu_buddy.h | 147 +++++++++++++++++++++++++++-----------
 2 files changed, 122 insertions(+), 60 deletions(-)

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2.52.0