Am 25.04.19 um 13:37 schrieb Agrawal, Akshu:
To avoid evictions, use GTT only for allocation on devices with
small vram size.
Signed-off-by: Akshu Agrawal <[email protected]>
---
src/gallium/winsys/amdgpu/drm/amdgpu_bo.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
b/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
index 09cf9247755..aab801b6337 100644
--- a/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
+++ b/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
@@ -486,8 +486,15 @@ static struct amdgpu_winsys_bo *amdgpu_create_bo(struct
amdgpu_winsys *ws,
* shared with the OS, allow VRAM placements too. The idea is not to use
* VRAM usefully, but to use it so that it's not unused and wasted.
*/
- if (!ws->info.has_dedicated_vram)
+ if (!ws->info.has_dedicated_vram) {
+ /* For devices having small VRAM size use GTT only to
+ * avoid evictions.
+ */
+ if (ws->info.vram_size <= 16777216)
+ request.preferred_heap = AMDGPU_GEM_DOMAIN_GTT;
Well that will certainly cause problems because it would result in
scanout BOs to be forced into GTT.
Christian.
+ else
request.preferred_heap |= AMDGPU_GEM_DOMAIN_GTT;
+ }
}
if (initial_domain & RADEON_DOMAIN_GTT)
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