mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-08-23 16:36:56 -04:00
25d912475e
Extend the scoreboard approach from the previous commit to used blocks, so drm_buddy_print() can report per-order allocation pressure in O(1). Unlike free blocks, an allocated block can leave the allocated state through mark_free() (normal free and gpu_buddy_block_trim()) or be consumed directly by gpu_block_free() during coalescing. Both sites are guarded by gpu_buddy_block_is_allocated() and paired with the increment in mark_allocated(). v3: - Assert scoreboard is empty at fini(), as sanity check (Matthew Auld) v2: - Update after fix for use-after-free in split_block() call sites - Change goto label to out_free_used_scoreboard for clarity - Make drm_buddy_print() and gpu_buddy_print() symmetric for used and free Assisted-by: GitHub Copilot:claude-sonnet-4.6 Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: https://lore.kernel.org/r/20260522092600.32818-6-francois.dugast@intel.com Signed-off-by: Francois Dugast <francois.dugast@intel.com>