diff options
Diffstat (limited to 'drivers/gpu/drm/drm_buddy.c')
| -rw-r--r-- | drivers/gpu/drm/drm_buddy.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_buddy.c b/drivers/gpu/drm/drm_buddy.c index f57e6d74fb0e..5ebdd6f8f36e 100644 --- a/drivers/gpu/drm/drm_buddy.c +++ b/drivers/gpu/drm/drm_buddy.c @@ -332,6 +332,7 @@ alloc_range_bias(struct drm_buddy *mm, u64 start, u64 end, unsigned int order) { + u64 req_size = mm->chunk_size << order; struct drm_buddy_block *block; struct drm_buddy_block *buddy; LIST_HEAD(dfs); @@ -367,6 +368,15 @@ alloc_range_bias(struct drm_buddy *mm, if (drm_buddy_block_is_allocated(block)) continue; + if (block_start < start || block_end > end) { + u64 adjusted_start = max(block_start, start); + u64 adjusted_end = min(block_end, end); + + if (round_down(adjusted_end + 1, req_size) <= + round_up(adjusted_start, req_size)) + continue; + } + if (contains(start, end, block_start, block_end) && order == drm_buddy_block_order(block)) { /* @@ -538,7 +548,13 @@ static int __alloc_range(struct drm_buddy *mm, list_add(&block->left->tmp_link, dfs); } while (1); + if (total_allocated < size) { + err = -ENOSPC; + goto err_free; + } + list_splice_tail(&allocated, blocks); + return 0; err_undo: @@ -755,8 +771,12 @@ int drm_buddy_alloc_blocks(struct drm_buddy *mm, return -EINVAL; /* Actual range allocation */ - if (start + size == end) + if (start + size == end) { + if (!IS_ALIGNED(start | end, min_block_size)) + return -EINVAL; + return __drm_buddy_alloc_range(mm, start, size, NULL, blocks); + } original_size = size; original_min_size = min_block_size; |