The current ANV allocator is restricted to allocate just 1 block of memory, which causes crashes in some Vulkan CTS tests. This patch allows to allocate more than 1 block.
This is a re-work for the first version, which had issues due the nature of the lock-free free-list. In this version, instead of one list of free-blocks, we use an array: N-th list keeps a list of free blocks that are N+1 consecutives. This array is 256 elements, meaning that we can request up to 256 blocks. If this is too much (or too low), we can tune it. Thus, if a program requests, let's say, 16 blocks of memory, we pull it from free_list[15]. If this list is empty, we search in the list of bigger blocks, pull one, split it, and returning back to the free_list the blocks we are not using. Finally, if none is available, then we pull a fresh blocks. Other than that, it works like the previous patch: when pulling fresh blocks, we grow up the pool if no space is available. Juan A. Suarez Romero (1): anv: add support for allocating more than 1 block of memory src/intel/vulkan/anv_allocator.c | 81 +++++++++++++++++++++++++++----------- src/intel/vulkan/anv_batch_chain.c | 4 +- src/intel/vulkan/anv_private.h | 7 +++- 3 files changed, 66 insertions(+), 26 deletions(-) -- 2.9.3 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
