1 files changed, 36 insertions, 3 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
index 9aca653bec07..b6333f92ba45 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
@@ -97,6 +97,38 @@ static u64 amdgpu_vram_mgr_vis_size(struct amdgpu_device *adev,
 }
 
 /**
+ * amdgpu_vram_mgr_bo_invisible_size - CPU invisible BO size
+ *
+ * @bo: &amdgpu_bo buffer object (must be in VRAM)
+ *
+ * Returns:
+ * How much of the given &amdgpu_bo buffer object lies in CPU invisible VRAM.
+ */
+u64 amdgpu_vram_mgr_bo_invisible_size(struct amdgpu_bo *bo)
+{
+        struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
+        struct ttm_mem_reg *mem = &bo->tbo.mem;
+        struct drm_mm_node *nodes = mem->mm_node;
+        unsigned pages = mem->num_pages;
+        u64 usage = 0;
+
+        if (adev->gmc.visible_vram_size == adev->gmc.real_vram_size)
+                return 0;
+
+        if (mem->start >= adev->gmc.visible_vram_size >> PAGE_SHIFT)
+                return amdgpu_bo_size(bo);
+
+        while (nodes && pages) {
+                usage += nodes->size << PAGE_SHIFT;
+                usage -= amdgpu_vram_mgr_vis_size(adev, nodes);
+                pages -= nodes->size;
+                ++nodes;
+        }
+
+        return usage;
+}
+
+/**
  * amdgpu_vram_mgr_new - allocate new ranges
  *
  * @man: TTM memory type manager
@@ -135,7 +167,8 @@ static int amdgpu_vram_mgr_new(struct ttm_mem_type_manager *man,
                 num_nodes = DIV_ROUND_UP(mem->num_pages, pages_per_node);
         }
 
-        nodes = kcalloc(num_nodes, sizeof(*nodes), GFP_KERNEL);
+        nodes = kvmalloc_array(num_nodes, sizeof(*nodes),
+                               GFP_KERNEL | __GFP_ZERO);
         if (!nodes)
                 return -ENOMEM;
 
@@ -190,7 +223,7 @@ error:
                 drm_mm_remove_node(&nodes[i]);
         spin_unlock(&mgr->lock);
 
-        kfree(nodes);
+        kvfree(nodes);
         return r == -ENOSPC ? 0 : r;
 }
 
@@ -229,7 +262,7 @@ static void amdgpu_vram_mgr_del(struct ttm_mem_type_manager *man,
         atomic64_sub(usage, &mgr->usage);
         atomic64_sub(vis_usage, &mgr->vis_usage);
 
-        kfree(mem->mm_node);
+        kvfree(mem->mm_node);
         mem->mm_node = NULL;
 }