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radv: Align large buffers to the fragment size.

Browse source 
Improves performance in Talos by about 15% (and significant improvements
in RotR and possibly other but did not bench with final patch) on
kernel 4.19 and earlier.

On 4.20+ a similar effect comes from

433ca054949a "drm/amdgpu: try allocating VRAM as power of two"

v2: Do not impact the alignment of the physical memory.

Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
CC: <mesa-stable@lists.freedesktop.org>
This commit is contained in:
Bas Nieuwenhuizen 2018-11-26 03:28:05 +01:00
parent 76945e4140
commit 6569644bb6
1 changed files with 5 additions and 1 deletions
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6
src/amd/vulkan/winsys/amdgpu/radv_amdgpu_bo.c
View file

@ -304,8 +304,12 @@ radv_amdgpu_winsys_bo_create(struct radeon_winsys *_ws,
return NULL;
}
unsigned virt_alignment = alignment;
if (size >= ws->info.pte_fragment_size)
virt_alignment = MAX2(virt_alignment, ws->info.pte_fragment_size);
r = amdgpu_va_range_alloc(ws->dev, amdgpu_gpu_va_range_general,
size, alignment, 0, &va, &va_handle,
size, virt_alignment, 0, &va, &va_handle,
(flags & RADEON_FLAG_32BIT ? AMDGPU_VA_RANGE_32_BIT : 0) |
AMDGPU_VA_RANGE_HIGH);
if (r)