drm/amdgpu: link all shadow bo V2

V2:
1. use mutex instead of spinlock for shadow list, since its process could
sleep.
2. move list_del to bo destroy phase.

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 60030f951152..e30a0d6353cd 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -468,6 +468,7 @@ struct amdgpu_bo {
         struct ttm_bo_kmap_obj          dma_buf_vmap;
         struct amdgpu_mn                *mn;
         struct list_head                mn_list;
+        struct list_head                shadow_list;
 };
 #define gem_to_amdgpu_bo(gobj) container_of((gobj), struct amdgpu_bo, gem_base)
 
@@ -2096,6 +2097,10 @@ struct amdgpu_device {
         struct kfd_dev          *kfd;
 
         struct amdgpu_virtualization virtualization;
+
+        /* link all shadow bo */
+        struct list_head                shadow_list;
+        struct mutex                    shadow_list_lock;
 };
 
 bool amdgpu_device_is_px(struct drm_device *dev);