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drm/amdgpu: fix wrong release of vmid owner

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The release of the vmid owner was not handled
correctly.  We need to take the lock and walk
the lru list.

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Monk Liu <monk.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Chunming Zhou 2016-04-25 10:28:24 +08:00 committed by Alex Deucher
parent 2e726dc4b4
commit 444066b915
1 changed files with 9 additions and 5 deletions
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14
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
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@ -1454,6 +1454,7 @@ error_free_sched_entity:
void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm)
{
struct amdgpu_bo_va_mapping *mapping, *tmp;
struct amdgpu_vm_id *id, *id_tmp;
int i;
amd_sched_entity_fini(vm->entity.sched, &vm->entity);
@ -1478,14 +1479,17 @@ void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm)
amdgpu_bo_unref(&vm->page_directory);
fence_put(vm->page_directory_fence);
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
struct amdgpu_vm_id *id = vm->ids[i];
mutex_lock(&adev->vm_manager.lock);
list_for_each_entry_safe(id, id_tmp, &adev->vm_manager.ids_lru,
list) {
if (!id)
continue;
atomic_long_cmpxchg(&id->owner, (long)vm, 0);
if (atomic_long_read(&id->owner) == (long)vm) {
atomic_long_set(&id->owner, 0);
id->pd_gpu_addr = 0;
}
}
mutex_unlock(&adev->vm_manager.lock);
}
/**