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anv/allocator: Do a better job of centering bi-directional block pools

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This commit is contained in:
Jason Ekstrand 2015-09-23 14:20:04 -07:00
parent 76be58efce
commit 429665823d
1 changed files with 12 additions and 1 deletions
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13
src/vulkan/anv_allocator.c
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@ -388,6 +388,9 @@ anv_block_pool_grow(struct anv_block_pool *pool, struct anv_block_state *state)
*/
center_bo_offset = 0;
} else {
/* Try to "center" the allocation based on how much is currently in
* use on each side of the center line.
*/
center_bo_offset = ((uint64_t)size * back_used) / total_used;
/* Align down to a multiple of both the block size and page size */
@ -396,6 +399,14 @@ anv_block_pool_grow(struct anv_block_pool *pool, struct anv_block_state *state)
center_bo_offset &= ~(granularity - 1);
assert(center_bo_offset >= back_used);
/* Make sure we don't shrink the back end of the pool */
if (center_bo_offset < pool->back_state.end)
center_bo_offset = pool->back_state.end;
/* Make sure that we don't shrink the front end of the pool */
if (size - center_bo_offset < pool->state.end)
center_bo_offset = size - pool->state.end;
}
assert(center_bo_offset % pool->block_size == 0);
@ -403,7 +414,7 @@ anv_block_pool_grow(struct anv_block_pool *pool, struct anv_block_state *state)
/* Assert that we only ever grow the pool */
assert(center_bo_offset >= pool->back_state.end);
assert(size - center_bo_offset >= pool->back_state.end);
assert(size - center_bo_offset >= pool->state.end);
cleanup = anv_vector_add(&pool->mmap_cleanups);
if (!cleanup)