r600g/compute: Quick exit if there's nothing to add to the pool

This way we can avoid defragmenting the pool, even if it is needed
to defragment it, and looping again through the list of unallocated
items.

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>

diff --git a/src/gallium/drivers/r600/compute_memory_pool.c b/src/gallium/drivers/r600/compute_memory_pool.c
index b158f5e..75a8bd3 100644 (file)
--- a/src/gallium/drivers/r600/compute_memory_pool.c
+++ b/src/gallium/drivers/r600/compute_memory_pool.c
@@ -262,6 +262,10 @@ int compute_memory_finalize_pending(struct compute_memory_pool* pool,
                        unallocated += align(item->size_in_dw, ITEM_ALIGNMENT);
        }
 
+       if (unallocated == 0) {
+               return 0;
+       }
+
        if (pool->status & POOL_FRAGMENTED) {
                compute_memory_defrag(pool, pipe);
        }