drm/amdgpu: improve vmid assigment V2

V2: the signaled items on the LRU maintain their order

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index b6c011b83641..6630732ea1bd 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -216,6 +216,20 @@ int amdgpu_vm_grab_id(struct amdgpu_vm *vm, struct amdgpu_ring *ring,
                                       struct amdgpu_vm_manager_id,
                                       list);
 
+        if (id->mgr_id->active && !fence_is_signaled(id->mgr_id->active)) {
+                struct amdgpu_vm_manager_id *mgr_id, *tmp;
+                struct list_head *head = &adev->vm_manager.ids_lru;
+                list_for_each_entry_safe(mgr_id, tmp, &adev->vm_manager.ids_lru, list) {
+                        if (mgr_id->active && fence_is_signaled(mgr_id->active)) {
+                                list_move(&mgr_id->list, head);
+                                head = &mgr_id->list;
+                        }
+                }
+                id->mgr_id = list_first_entry(&adev->vm_manager.ids_lru,
+                                              struct amdgpu_vm_manager_id,
+                                              list);
+        }
+
         r = amdgpu_sync_fence(ring->adev, sync, id->mgr_id->active);
         if (!r) {
                 fence_put(id->mgr_id->active);