drm/amdgpu: add vram usage into debugfs

Signed-off-by: NChunming Zhou <david1.zhou@amd.com>
Reviewed-by: NJammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c

@@ -1072,6 +1072,11 @@ static int amdgpu_mm_dump_table(struct seq_file *m, void *data)
 	spin_lock(&glob->lru_lock);
 	ret = drm_mm_dump_table(m, mm);
 	spin_unlock(&glob->lru_lock);
+	if (ttm_pl == TTM_PL_VRAM)
+		seq_printf(m, "man size:%llu pages, ram usage:%luMB, vis usage:%luMB\n",
+			   adev->mman.bdev.man[ttm_pl].size,
+			   atomic64_read(&adev->vram_usage) >> 20,
+			   atomic64_read(&adev->vram_vis_usage) >> 20);
 	return ret;
 }