diff options
| author | Nicolai Hähnle <nicolai.haehnle@amd.com> | 2017-03-23 19:36:31 +0100 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-03-29 23:54:15 -0400 |
| commit | f34678187a339702256c70c88c3db2d1975484ce (patch) | |
| tree | 2f762f5ef7ecaebfc654ffe03da435f4abd8ddfa /drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | |
| parent | 923d26db85e8188bdbfeb7f8d70dfd86d901d4f0 (diff) | |
| download | linux-f34678187a339702256c70c88c3db2d1975484ce.tar.bz2 | |
drm/amdgpu: add optional fence out-parameter to amdgpu_vm_clear_freed
We will add the fence to freed buffer objects in a later commit, to ensure
that the underlying memory can only be re-used after all references in
page tables have been cleared.
Signed-off-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 4fe892e3600d..696860132f04 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -1382,6 +1382,8 @@ static void amdgpu_vm_prt_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm) * * @adev: amdgpu_device pointer * @vm: requested vm + * @fence: optional resulting fence (unchanged if no work needed to be done + * or if an error occurred) * * Make sure all freed BOs are cleared in the PT. * Returns 0 for success. @@ -1389,10 +1391,11 @@ static void amdgpu_vm_prt_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm) * PTs have to be reserved and mutex must be locked! */ int amdgpu_vm_clear_freed(struct amdgpu_device *adev, - struct amdgpu_vm *vm) + struct amdgpu_vm *vm, + struct dma_fence **fence) { struct amdgpu_bo_va_mapping *mapping; - struct dma_fence *fence = NULL; + struct dma_fence *f = NULL; int r; while (!list_empty(&vm->freed)) { @@ -1401,15 +1404,21 @@ int amdgpu_vm_clear_freed(struct amdgpu_device *adev, list_del(&mapping->list); r = amdgpu_vm_bo_split_mapping(adev, NULL, 0, NULL, vm, mapping, - 0, 0, &fence); - amdgpu_vm_free_mapping(adev, vm, mapping, fence); + 0, 0, &f); + amdgpu_vm_free_mapping(adev, vm, mapping, f); if (r) { - dma_fence_put(fence); + dma_fence_put(f); return r; } + } + if (fence && f) { + dma_fence_put(*fence); + *fence = f; + } else { + dma_fence_put(f); } - dma_fence_put(fence); + return 0; } |