drm/amdgpu: add amdgpu_evict_vram debugfs file

Torture test for MM and VM support, can be used to evict all VRAM while
the system is under load.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 345663a..b10aecc 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3969,9 +3969,20 @@ static int amdgpu_debugfs_get_vbios_dump(struct seq_file *m, void *data)
        return 0;
 }
 
+static int amdgpu_debugfs_evict_vram(struct seq_file *m, void *data)
+{
+       struct drm_info_node *node = (struct drm_info_node *)m->private;
+       struct drm_device *dev = node->minor->dev;
+       struct amdgpu_device *adev = dev->dev_private;
+
+       seq_printf(m, "(%d)\n", amdgpu_bo_evict_vram(adev));
+       return 0;
+}
+
 static const struct drm_info_list amdgpu_debugfs_list[] = {
        {"amdgpu_vbios", amdgpu_debugfs_get_vbios_dump},
-       {"amdgpu_test_ib", &amdgpu_debugfs_test_ib}
+       {"amdgpu_test_ib", &amdgpu_debugfs_test_ib},
+       {"amdgpu_evict_vram", &amdgpu_debugfs_evict_vram}
 };
 
 static int amdgpu_debugfs_init(struct amdgpu_device *adev)