From f466d4dd6af76c3e3edef403c542180094009fc3 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Fri, 10 Feb 2017 00:58:59 +0000 Subject: [PATCH] radv: reduce CPU overhead merging bo lists. Just noticed we do a fair bit of unneeded searching here. Since we know that the buffers in a CS are unique already, the first time we get any buffers, we can just memcpy those into place, and when we are searching for subsequent CSes, we only have to search up until where the previous unique buffers were. Reviewed-by: Bas Nieuwenhuizen Signed-off-by: Dave Airlie --- src/amd/vulkan/winsys/amdgpu/radv_amdgpu_cs.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/src/amd/vulkan/winsys/amdgpu/radv_amdgpu_cs.c b/src/amd/vulkan/winsys/amdgpu/radv_amdgpu_cs.c index b58f5db0622..9e468bd4ca8 100644 --- a/src/amd/vulkan/winsys/amdgpu/radv_amdgpu_cs.c +++ b/src/amd/vulkan/winsys/amdgpu/radv_amdgpu_cs.c @@ -486,9 +486,19 @@ static int radv_amdgpu_create_bo_list(struct radv_amdgpu_winsys *ws, else cs = (struct radv_amdgpu_cs*)cs_array[i]; + if (!cs->num_buffers) + continue; + + if (unique_bo_count == 0) { + memcpy(handles, cs->handles, cs->num_buffers * sizeof(amdgpu_bo_handle)); + memcpy(priorities, cs->priorities, cs->num_buffers * sizeof(uint8_t)); + unique_bo_count = cs->num_buffers; + continue; + } + int unique_bo_so_far = unique_bo_count; for (unsigned j = 0; j < cs->num_buffers; ++j) { bool found = false; - for (unsigned k = 0; k < unique_bo_count; ++k) { + for (unsigned k = 0; k < unique_bo_so_far; ++k) { if (handles[k] == cs->handles[j]) { found = true; priorities[k] = MAX2(priorities[k], -- 2.30.2