drm/amdgpu: use the DFS iterator in amdgpu_vm_invalidate_pds v2

Less code and easier to maintain.

v2: rename the function as well

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 8 insertions, 24 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 139bd6347fc4..cca8fc931bbb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1370,37 +1370,22 @@ static void amdgpu_vm_update_pde(struct amdgpu_pte_update_params *params,
 }
 
 /*
- * amdgpu_vm_invalidate_level - mark all PD levels as invalid
+ * amdgpu_vm_invalidate_pds - mark all PDs as invalid
  *
  * @adev: amdgpu_device pointer
  * @vm: related vm
- * @parent: parent PD
- * @level: VMPT level
  *
  * Mark all PD level as invalid after an error.
  */
-static void amdgpu_vm_invalidate_level(struct amdgpu_device *adev,
-                                       struct amdgpu_vm *vm,
-                                       struct amdgpu_vm_pt *parent,
-                                       unsigned level)
+static void amdgpu_vm_invalidate_pds(struct amdgpu_device *adev,
+                                     struct amdgpu_vm *vm)
 {
-        unsigned pt_idx, num_entries;
-
-        /*
-         * Recurse into the subdirectories. This recursion is harmless because
-         * we only have a maximum of 5 layers.
-         */
-        num_entries = amdgpu_vm_num_entries(adev, level);
-        for (pt_idx = 0; pt_idx < num_entries; ++pt_idx) {
-                struct amdgpu_vm_pt *entry = &parent->entries[pt_idx];
-
-                if (!entry->base.bo)
-                        continue;
+        struct amdgpu_vm_pt_cursor cursor;
+        struct amdgpu_vm_pt *entry;
 
-                if (!entry->base.moved)
+        for_each_amdgpu_vm_pt_dfs_safe(adev, vm, cursor, entry)
+                if (entry->base.bo && !entry->base.moved)
                         amdgpu_vm_bo_relocated(&entry->base);
-                amdgpu_vm_invalidate_level(adev, vm, entry, level + 1);
-        }
 }
 
 /*
@@ -1497,8 +1482,7 @@ restart:
         return 0;
 
 error:
-        amdgpu_vm_invalidate_level(adev, vm, &vm->root,
-                                   adev->vm_manager.root_level);
+        amdgpu_vm_invalidate_pds(adev, vm);
         amdgpu_job_free(job);
         return r;
 }