[PATCH] drm/ttm: specify bo priority when initializing ttm bo
Zhang, Jerry (Junwei)
Jerry.Zhang at amd.com
Fri May 11 02:19:54 UTC 2018
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.
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,
>>>
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>
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