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drm/amdgpu: Use kvmalloc_array for allocating VRAM manager nodes array

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It can be quite big, and there's no need for it to be physically
contiguous. This is less likely to fail under memory pressure (has
actually happened while running piglit).

Cc: stable@vger.kernel.org
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Michel Dänzer 2018-06-08 12:58:15 +02:00 committed by Alex Deucher
parent 91c822c330
commit 6fa39bc1e0
1 changed files with 4 additions and 3 deletions
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7
drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
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@ -135,7 +135,8 @@ 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 +191,7 @@ static int amdgpu_vram_mgr_new(struct ttm_mem_type_manager *man,
drm_mm_remove_node(&nodes[i]);
spin_unlock(&mgr->lock);
kfree(nodes);
kvfree(nodes);
return r == -ENOSPC ? 0 : r;
}
@ -229,7 +230,7 @@ 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;
}