[PATCH] drm/ttm: specify bo priority when initializing ttm bo
Zhang, Jerry (Junwei)
Jerry.Zhang at amd.com
Fri May 11 02:47:50 UTC 2018
On 05/11/2018 10:26 AM, zhoucm1 wrote:
>
>
> On 2018年05月11日 10:19, Zhang, Jerry (Junwei) wrote:
>> On 05/11/2018 10:11 AM, zhoucm1 wrote:
>>>
>>>
>>> On 2018年05月11日 09:21, Zhang, Jerry (Junwei) wrote:
>>>> On 05/10/2018 10:40 PM, Christian König wrote:
>>>>> Am 10.05.2018 um 07:01 schrieb Junwei Zhang:
>>>>>> Expect to add an evitable bo who has reservation object
>>>>>> to the correct lru[bo->priority] list
>>>>>
>>>>> Nice catch, but since this affects only a very small use case can we just
>>>>> remove
>>>>> and readd the BO to the LRU?
>>>>>
>>>>> A call to ttm_bo_move_to_lru_tail() after setting the priority should be
>>>>> sufficient.
>>>>
>>>> Yeah, at that moment, I thought setting a priority for tbo at initialization
>>>> is a general way, which may help all associated modules to get out of
>>>> potential pain if more priorities are adopted.
>>>>
>>>> Agree.
>>>> The most simple way is to move the bo back to expected lru after priority
>>>> setting. Going to prepare a patch.
>>> No, there is more simpler way. see inline...
>>>
>>>> (in this case, include amd-gfx mail only)
>>>>
>>>> Regards,
>>>> Jerry
>>>>
>>>>>
>>>>> Thanks,
>>>>> Christian.
>>>>>
>>>>>>
>>>>>> Signed-off-by: Junwei Zhang <Jerry.Zhang at amd.com>
>>>>>> ---
>>>>>> drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 11 ++++++-----
>>>>>> drivers/gpu/drm/ast/ast_ttm.c | 2 +-
>>>>>> drivers/gpu/drm/bochs/bochs_mm.c | 2 +-
>>>>>> drivers/gpu/drm/cirrus/cirrus_ttm.c | 2 +-
>>>>>> drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c | 2 +-
>>>>>> drivers/gpu/drm/mgag200/mgag200_ttm.c | 2 +-
>>>>>> drivers/gpu/drm/nouveau/nouveau_bo.c | 2 +-
>>>>>> drivers/gpu/drm/qxl/qxl_object.c | 2 +-
>>>>>> drivers/gpu/drm/radeon/radeon_object.c | 2 +-
>>>>>> drivers/gpu/drm/ttm/ttm_bo.c | 8 +++++---
>>>>>> drivers/gpu/drm/virtio/virtgpu_object.c | 2 +-
>>>>>> drivers/gpu/drm/vmwgfx/vmwgfx_resource.c | 2 +-
>>>>>> drivers/staging/vboxvideo/vbox_ttm.c | 2 +-
>>>>>> include/drm/ttm/ttm_bo_api.h | 5 ++++-
>>>>>> 14 files changed, 26 insertions(+), 20 deletions(-)
>>>>>>
>>>>>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
>>>>>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
>>>>>> index e62153a..9a25ecb 100644
>>>>>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
>>>>>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
>>>>>> @@ -360,6 +360,7 @@ static int amdgpu_bo_do_create(struct amdgpu_device
>>>>>> *adev,
>>>>>> };
>>>>>> struct amdgpu_bo *bo;
>>>>>> unsigned long page_align, size = bp->size;
>>>>>> + uint32_t prio = 0;
>>>>>> size_t acc_size;
>>>>>> int r;
>>>>>> @@ -419,10 +420,13 @@ static int amdgpu_bo_do_create(struct amdgpu_device
>>>>>> *adev,
>>>>>> bo->tbo.bdev = &adev->mman.bdev;
>>>>>> amdgpu_ttm_placement_from_domain(bo, bp->domain);
>>>>>> + if (bp->type == ttm_bo_type_kernel)
>>>>>> + prio = 1;
>>> Why not just bo->tbo.priority = 1? In that case, you don't need to add more
>>> parameter to ttm_bo_init_reserved.
>>> In fact, this change is already in my per-vm-lru patch set.
>>
>> Do you mean specify 1 before ttm_bo_init_reserved()?
>>
>> ttm_bo_init_reserved() will overwrite it to 0 again inside.
> If it can set outside of ttm, you can remove that overwriting. tbo allocation is
> from kzalloc.
Yeah, that bases on different coding idea, I think.
1) always to clear the tbo memory before tbo init (mostly, we do so)
2) make sure the key(all) members are initialized as expected always inside init
function.
anyway, I will sent it out firstly and RFC.
Jerry
>
> Regards,
> David Zhou
>>
>> Jerry
>>
>>>
>>> Regards,
>>> David Zhou
>>>>>> r = ttm_bo_init_reserved(&adev->mman.bdev, &bo->tbo, size, bp->type,
>>>>>> - &bo->placement, page_align, &ctx, acc_size,
>>>>>> - NULL, bp->resv, &amdgpu_ttm_bo_destroy);
>>>>>> + prio, &bo->placement, page_align, &ctx,
>>>>>> + acc_size, NULL, bp->resv,
>>>>>> + &amdgpu_ttm_bo_destroy);
>>>>>> if (unlikely(r != 0))
>>>>>> return r;
>>>>>> @@ -434,9 +438,6 @@ static int amdgpu_bo_do_create(struct amdgpu_device
>>>>>> *adev,
>>>>>> else
>>>>>> amdgpu_cs_report_moved_bytes(adev, ctx.bytes_moved, 0);
>>>>>> - if (bp->type == ttm_bo_type_kernel)
>>>>>> - bo->tbo.priority = 1;
>>>>>> -
>>>>>> if (bp->flags & AMDGPU_GEM_CREATE_VRAM_CLEARED &&
>>>>>> bo->tbo.mem.placement & TTM_PL_FLAG_VRAM) {
>>>>>> struct dma_fence *fence;
>>>>>> diff --git a/drivers/gpu/drm/ast/ast_ttm.c b/drivers/gpu/drm/ast/ast_ttm.c
>>>>>> index fe354eb..aabb96a 100644
>>>>>> --- a/drivers/gpu/drm/ast/ast_ttm.c
>>>>>> +++ b/drivers/gpu/drm/ast/ast_ttm.c
>>>>>> @@ -320,7 +320,7 @@ int ast_bo_create(struct drm_device *dev, int size, int
>>>>>> align,
>>>>>> sizeof(struct ast_bo));
>>>>>> ret = ttm_bo_init(&ast->ttm.bdev, &astbo->bo, size,
>>>>>> - ttm_bo_type_device, &astbo->placement,
>>>>>> + ttm_bo_type_device, 0, &astbo->placement,
>>>>>> align >> PAGE_SHIFT, false, acc_size,
>>>>>> NULL, NULL, ast_bo_ttm_destroy);
>>>>>> if (ret)
>>>>>> diff --git a/drivers/gpu/drm/bochs/bochs_mm.c
>>>>>> b/drivers/gpu/drm/bochs/bochs_mm.c
>>>>>> index 39cd084..9693109 100644
>>>>>> --- a/drivers/gpu/drm/bochs/bochs_mm.c
>>>>>> +++ b/drivers/gpu/drm/bochs/bochs_mm.c
>>>>>> @@ -366,7 +366,7 @@ static int bochs_bo_create(struct drm_device *dev, int
>>>>>> size, int align,
>>>>>> sizeof(struct bochs_bo));
>>>>>> ret = ttm_bo_init(&bochs->ttm.bdev, &bochsbo->bo, size,
>>>>>> - ttm_bo_type_device, &bochsbo->placement,
>>>>>> + ttm_bo_type_device, 0, &bochsbo->placement,
>>>>>> align >> PAGE_SHIFT, false, acc_size,
>>>>>> NULL, NULL, bochs_bo_ttm_destroy);
>>>>>> if (ret)
>>>>>> diff --git a/drivers/gpu/drm/cirrus/cirrus_ttm.c
>>>>>> b/drivers/gpu/drm/cirrus/cirrus_ttm.c
>>>>>> index f219532..c1d85f8 100644
>>>>>> --- a/drivers/gpu/drm/cirrus/cirrus_ttm.c
>>>>>> +++ b/drivers/gpu/drm/cirrus/cirrus_ttm.c
>>>>>> @@ -327,7 +327,7 @@ int cirrus_bo_create(struct drm_device *dev, int size,
>>>>>> int
>>>>>> align,
>>>>>> sizeof(struct cirrus_bo));
>>>>>> ret = ttm_bo_init(&cirrus->ttm.bdev, &cirrusbo->bo, size,
>>>>>> - ttm_bo_type_device, &cirrusbo->placement,
>>>>>> + ttm_bo_type_device, 0, &cirrusbo->placement,
>>>>>> align >> PAGE_SHIFT, false, acc_size,
>>>>>> NULL, NULL, cirrus_bo_ttm_destroy);
>>>>>> if (ret)
>>>>>> diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c
>>>>>> b/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c
>>>>>> index 4871025..8c24731 100644
>>>>>> --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c
>>>>>> +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c
>>>>>> @@ -315,7 +315,7 @@ int hibmc_bo_create(struct drm_device *dev, int size, int
>>>>>> align,
>>>>>> sizeof(struct hibmc_bo));
>>>>>> ret = ttm_bo_init(&hibmc->bdev, &hibmcbo->bo, size,
>>>>>> - ttm_bo_type_device, &hibmcbo->placement,
>>>>>> + ttm_bo_type_device, 0, &hibmcbo->placement,
>>>>>> align >> PAGE_SHIFT, false, acc_size,
>>>>>> NULL, NULL, hibmc_bo_ttm_destroy);
>>>>>> if (ret) {
>>>>>> diff --git a/drivers/gpu/drm/mgag200/mgag200_ttm.c
>>>>>> b/drivers/gpu/drm/mgag200/mgag200_ttm.c
>>>>>> index 05570f0..e4db046 100644
>>>>>> --- a/drivers/gpu/drm/mgag200/mgag200_ttm.c
>>>>>> +++ b/drivers/gpu/drm/mgag200/mgag200_ttm.c
>>>>>> @@ -323,7 +323,7 @@ int mgag200_bo_create(struct drm_device *dev, int size,
>>>>>> int align,
>>>>>> sizeof(struct mgag200_bo));
>>>>>> ret = ttm_bo_init(&mdev->ttm.bdev, &mgabo->bo, size,
>>>>>> - ttm_bo_type_device, &mgabo->placement,
>>>>>> + ttm_bo_type_device, 0, &mgabo->placement,
>>>>>> align >> PAGE_SHIFT, false, acc_size,
>>>>>> NULL, NULL, mgag200_bo_ttm_destroy);
>>>>>> if (ret)
>>>>>> diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c
>>>>>> b/drivers/gpu/drm/nouveau/nouveau_bo.c
>>>>>> index 6f402c4..8a6f949 100644
>>>>>> --- a/drivers/gpu/drm/nouveau/nouveau_bo.c
>>>>>> +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
>>>>>> @@ -297,7 +297,7 @@
>>>>>> sizeof(struct nouveau_bo));
>>>>>> ret = ttm_bo_init(&drm->ttm.bdev, &nvbo->bo, size,
>>>>>> - type, &nvbo->placement,
>>>>>> + type, 0, &nvbo->placement,
>>>>>> align >> PAGE_SHIFT, false, acc_size, sg,
>>>>>> robj, nouveau_bo_del_ttm);
>>>>>> if (ret) {
>>>>>> diff --git a/drivers/gpu/drm/qxl/qxl_object.c
>>>>>> b/drivers/gpu/drm/qxl/qxl_object.c
>>>>>> index 6a30196..3e8c64b 100644
>>>>>> --- a/drivers/gpu/drm/qxl/qxl_object.c
>>>>>> +++ b/drivers/gpu/drm/qxl/qxl_object.c
>>>>>> @@ -108,7 +108,7 @@ int qxl_bo_create(struct qxl_device *qdev,
>>>>>> qxl_ttm_placement_from_domain(bo, domain, pinned);
>>>>>> - r = ttm_bo_init(&qdev->mman.bdev, &bo->tbo, size, type,
>>>>>> + r = ttm_bo_init(&qdev->mman.bdev, &bo->tbo, size, type, 0,
>>>>>> &bo->placement, 0, !kernel, size,
>>>>>> NULL, NULL, &qxl_ttm_bo_destroy);
>>>>>> if (unlikely(r != 0)) {
>>>>>> diff --git a/drivers/gpu/drm/radeon/radeon_object.c
>>>>>> b/drivers/gpu/drm/radeon/radeon_object.c
>>>>>> index edbb4cd..b274e3f 100644
>>>>>> --- a/drivers/gpu/drm/radeon/radeon_object.c
>>>>>> +++ b/drivers/gpu/drm/radeon/radeon_object.c
>>>>>> @@ -256,7 +256,7 @@ int radeon_bo_create(struct radeon_device *rdev,
>>>>>> radeon_ttm_placement_from_domain(bo, domain);
>>>>>> /* Kernel allocation are uninterruptible */
>>>>>> down_read(&rdev->pm.mclk_lock);
>>>>>> - r = ttm_bo_init(&rdev->mman.bdev, &bo->tbo, size, type,
>>>>>> + r = ttm_bo_init(&rdev->mman.bdev, &bo->tbo, size, type, 0,
>>>>>> &bo->placement, page_align, !kernel, acc_size,
>>>>>> sg, resv, &radeon_ttm_bo_destroy);
>>>>>> up_read(&rdev->pm.mclk_lock);
>>>>>> diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
>>>>>> index 98e06f8..d1f0585 100644
>>>>>> --- a/drivers/gpu/drm/ttm/ttm_bo.c
>>>>>> +++ b/drivers/gpu/drm/ttm/ttm_bo.c
>>>>>> @@ -1109,6 +1109,7 @@ int ttm_bo_init_reserved(struct ttm_bo_device *bdev,
>>>>>> struct ttm_buffer_object *bo,
>>>>>> unsigned long size,
>>>>>> enum ttm_bo_type type,
>>>>>> + uint32_t priority,
>>>>>> struct ttm_placement *placement,
>>>>>> uint32_t page_alignment,
>>>>>> struct ttm_operation_ctx *ctx,
>>>>>> @@ -1175,7 +1176,7 @@ int ttm_bo_init_reserved(struct ttm_bo_device *bdev,
>>>>>> reservation_object_init(&bo->ttm_resv);
>>>>>> atomic_inc(&bo->bdev->glob->bo_count);
>>>>>> drm_vma_node_reset(&bo->vma_node);
>>>>>> - bo->priority = 0;
>>>>>> + bo->priority = priority;
>>>>>> /*
>>>>>> * For ttm_bo_type_device buffers, allocate
>>>>>> @@ -1219,6 +1220,7 @@ int ttm_bo_init(struct ttm_bo_device *bdev,
>>>>>> struct ttm_buffer_object *bo,
>>>>>> unsigned long size,
>>>>>> enum ttm_bo_type type,
>>>>>> + uint32_t priority,
>>>>>> struct ttm_placement *placement,
>>>>>> uint32_t page_alignment,
>>>>>> bool interruptible,
>>>>>> @@ -1230,7 +1232,7 @@ int ttm_bo_init(struct ttm_bo_device *bdev,
>>>>>> struct ttm_operation_ctx ctx = { interruptible, false };
>>>>>> int ret;
>>>>>> - ret = ttm_bo_init_reserved(bdev, bo, size, type, placement,
>>>>>> + ret = ttm_bo_init_reserved(bdev, bo, size, type, priority, placement,
>>>>>> page_alignment, &ctx, acc_size,
>>>>>> sg, resv, destroy);
>>>>>> if (ret)
>>>>>> @@ -1288,7 +1290,7 @@ int ttm_bo_create(struct ttm_bo_device *bdev,
>>>>>> return -ENOMEM;
>>>>>> acc_size = ttm_bo_acc_size(bdev, size, sizeof(struct
>>>>>> ttm_buffer_object));
>>>>>> - ret = ttm_bo_init(bdev, bo, size, type, placement, page_alignment,
>>>>>> + ret = ttm_bo_init(bdev, bo, size, type, 0, placement, page_alignment,
>>>>>> interruptible, acc_size,
>>>>>> NULL, NULL, NULL);
>>>>>> if (likely(ret == 0))
>>>>>> diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c
>>>>>> b/drivers/gpu/drm/virtio/virtgpu_object.c
>>>>>> index 9f2f470..c11eba8 100644
>>>>>> --- a/drivers/gpu/drm/virtio/virtgpu_object.c
>>>>>> +++ b/drivers/gpu/drm/virtio/virtgpu_object.c
>>>>>> @@ -88,7 +88,7 @@ int virtio_gpu_object_create(struct virtio_gpu_device
>>>>>> *vgdev,
>>>>>> bo->dumb = false;
>>>>>> virtio_gpu_init_ttm_placement(bo, pinned);
>>>>>> - ret = ttm_bo_init(&vgdev->mman.bdev, &bo->tbo, size, type,
>>>>>> + ret = ttm_bo_init(&vgdev->mman.bdev, &bo->tbo, size, type, 0,
>>>>>> &bo->placement, 0, !kernel, acc_size,
>>>>>> NULL, NULL, &virtio_gpu_ttm_bo_destroy);
>>>>>> /* ttm_bo_init failure will call the destroy */
>>>>>> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
>>>>>> b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
>>>>>> index 6b3a942..e7a4216 100644
>>>>>> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
>>>>>> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
>>>>>> @@ -385,7 +385,7 @@ int vmw_dmabuf_init(struct vmw_private *dev_priv,
>>>>>> INIT_LIST_HEAD(&vmw_bo->res_list);
>>>>>> ret = ttm_bo_init(bdev, &vmw_bo->base, size,
>>>>>> - ttm_bo_type_device, placement,
>>>>>> + ttm_bo_type_device, 0, placement,
>>>>>> 0, interruptible, acc_size,
>>>>>> NULL, NULL, bo_free);
>>>>>> return ret;
>>>>>> diff --git a/drivers/staging/vboxvideo/vbox_ttm.c
>>>>>> b/drivers/staging/vboxvideo/vbox_ttm.c
>>>>>> index 548edb7..b93f8f0 100644
>>>>>> --- a/drivers/staging/vboxvideo/vbox_ttm.c
>>>>>> +++ b/drivers/staging/vboxvideo/vbox_ttm.c
>>>>>> @@ -329,7 +329,7 @@ int vbox_bo_create(struct drm_device *dev, int size, int
>>>>>> align,
>>>>>> sizeof(struct vbox_bo));
>>>>>> ret = ttm_bo_init(&vbox->ttm.bdev, &vboxbo->bo, size,
>>>>>> - ttm_bo_type_device, &vboxbo->placement,
>>>>>> + ttm_bo_type_device, 0, &vboxbo->placement,
>>>>>> align >> PAGE_SHIFT, false, acc_size,
>>>>>> NULL, NULL, vbox_bo_ttm_destroy);
>>>>>> if (ret)
>>>>>> diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h
>>>>>> index c67977a..f4142af 100644
>>>>>> --- a/include/drm/ttm/ttm_bo_api.h
>>>>>> +++ b/include/drm/ttm/ttm_bo_api.h
>>>>>> @@ -464,6 +464,7 @@ size_t ttm_bo_dma_acc_size(struct ttm_bo_device *bdev,
>>>>>> * @bo: Pointer to a ttm_buffer_object to be initialized.
>>>>>> * @size: Requested size of buffer object.
>>>>>> * @type: Requested type of buffer object.
>>>>>> + * @priority: Requested priority of buffer object.
>>>>>> * @flags: Initial placement flags.
>>>>>> * @page_alignment: Data alignment in pages.
>>>>>> * @ctx: TTM operation context for memory allocation.
>>>>>> @@ -496,6 +497,7 @@ int ttm_bo_init_reserved(struct ttm_bo_device *bdev,
>>>>>> struct ttm_buffer_object *bo,
>>>>>> unsigned long size,
>>>>>> enum ttm_bo_type type,
>>>>>> + uint32_t priority,
>>>>>> struct ttm_placement *placement,
>>>>>> uint32_t page_alignment,
>>>>>> struct ttm_operation_ctx *ctx,
>>>>>> @@ -511,6 +513,7 @@ int ttm_bo_init_reserved(struct ttm_bo_device *bdev,
>>>>>> * @bo: Pointer to a ttm_buffer_object to be initialized.
>>>>>> * @size: Requested size of buffer object.
>>>>>> * @type: Requested type of buffer object.
>>>>>> + * @priority: Requested priority of buffer object.
>>>>>> * @flags: Initial placement flags.
>>>>>> * @page_alignment: Data alignment in pages.
>>>>>> * @interruptible: If needing to sleep to wait for GPU resources,
>>>>>> @@ -542,7 +545,7 @@ int ttm_bo_init_reserved(struct ttm_bo_device *bdev,
>>>>>> * -ERESTARTSYS: Interrupted by signal while sleeping waiting for
>>>>>> resources.
>>>>>> */
>>>>>> int ttm_bo_init(struct ttm_bo_device *bdev, struct ttm_buffer_object *bo,
>>>>>> - unsigned long size, enum ttm_bo_type type,
>>>>>> + unsigned long size, enum ttm_bo_type type, uint32_t priority,
>>>>>> struct ttm_placement *placement,
>>>>>> uint32_t page_alignment, bool interrubtible, size_t acc_size,
>>>>>> struct sg_table *sg, struct reservation_object *resv,
>>>>>
>>>> _______________________________________________
>>>> amd-gfx mailing list
>>>> amd-gfx at lists.freedesktop.org
>>>> https://lists.freedesktop.org/mailman/listinfo/amd-gfx
>>>
>
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