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Message-ID: <8558c1cf-6a05-429f-80cf-e196ab9ddec1@amd.com>
Date: Mon, 17 Nov 2025 10:56:02 +0100
From: Christian König <christian.koenig@....com>
To: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@....com>,
Alex Deucher <alexander.deucher@....com>, David Airlie <airlied@...il.com>,
Simona Vetter <simona@...ll.ch>, Sumit Semwal <sumit.semwal@...aro.org>
Cc: amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
linaro-mm-sig@...ts.linaro.org
Subject: Re: [PATCH v2 18/20] drm/amdgpu: rename amdgpu_fill_buffer as
amdgpu_ttm_clear_buffer
On 11/13/25 17:05, Pierre-Eric Pelloux-Prayer wrote:
> This is the only use case for this function.
>
> ---
> v2: amdgpu_ttm_clear_buffer instead of amdgpu_clear_buffer
> ---
>
> Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@....com>
Reviewed-by: Christian König <christian.koenig@....com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 8 +++----
> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 26 ++++++++++------------
> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 15 ++++++-------
> 3 files changed, 23 insertions(+), 26 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> index 4490b19752b8..4b9518097899 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> @@ -725,8 +725,8 @@ int amdgpu_bo_create(struct amdgpu_device *adev,
> bo->tbo.resource->mem_type == TTM_PL_VRAM) {
> struct dma_fence *fence;
>
> - r = amdgpu_fill_buffer(NULL, bo, 0, NULL, &fence, NULL,
> - true, AMDGPU_KERNEL_JOB_ID_TTM_CLEAR_BUFFER);
> + r = amdgpu_ttm_clear_buffer(NULL, bo, NULL, &fence, NULL,
> + true, AMDGPU_KERNEL_JOB_ID_TTM_CLEAR_BUFFER);
> if (unlikely(r))
> goto fail_unreserve;
>
> @@ -1324,8 +1324,8 @@ void amdgpu_bo_release_notify(struct ttm_buffer_object *bo)
> if (r)
> goto out;
>
> - r = amdgpu_fill_buffer(NULL, abo, 0, &bo->base._resv, &fence, NULL,
> - false, AMDGPU_KERNEL_JOB_ID_CLEAR_ON_RELEASE);
> + r = amdgpu_ttm_clear_buffer(NULL, abo, &bo->base._resv, &fence, NULL,
> + false, AMDGPU_KERNEL_JOB_ID_CLEAR_ON_RELEASE);
> if (WARN_ON(r))
> goto out;
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> index df05768c3817..0a55bc4ea91f 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> @@ -433,9 +433,9 @@ static int amdgpu_move_blit(struct ttm_buffer_object *bo,
> (abo->flags & AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE)) {
> struct dma_fence *wipe_fence = NULL;
>
> - r = amdgpu_fill_buffer(entity,
> - abo, 0, NULL, &wipe_fence, fence,
> - false, AMDGPU_KERNEL_JOB_ID_MOVE_BLIT);
> + r = amdgpu_ttm_clear_buffer(entity,
> + abo, NULL, &wipe_fence, fence,
> + false, AMDGPU_KERNEL_JOB_ID_MOVE_BLIT);
> if (r) {
> goto error;
> } else if (wipe_fence) {
> @@ -2418,11 +2418,10 @@ static int amdgpu_ttm_fill_mem(struct amdgpu_ring *ring,
> }
>
> /**
> - * amdgpu_fill_buffer - fill a buffer with a given value
> + * amdgpu_ttm_clear_buffer - fill a buffer with 0
> * @entity: optional entity to use. If NULL, the clearing entities will be
> * used to load-balance the partial clears
> * @bo: the bo to fill
> - * @src_data: the value to set
> * @resv: fences contained in this reservation will be used as dependencies.
> * @out_fence: the fence from the last clear will be stored here. It might be
> * NULL if no job was run.
> @@ -2432,14 +2431,13 @@ static int amdgpu_ttm_fill_mem(struct amdgpu_ring *ring,
> * @k_job_id: trace id
> *
> */
> -int amdgpu_fill_buffer(struct amdgpu_ttm_buffer_entity *entity,
> - struct amdgpu_bo *bo,
> - uint32_t src_data,
> - struct dma_resv *resv,
> - struct dma_fence **out_fence,
> - struct dma_fence *dependency,
> - bool consider_clear_status,
> - u64 k_job_id)
> +int amdgpu_ttm_clear_buffer(struct amdgpu_ttm_buffer_entity *entity,
> + struct amdgpu_bo *bo,
> + struct dma_resv *resv,
> + struct dma_fence **out_fence,
> + struct dma_fence *dependency,
> + bool consider_clear_status,
> + u64 k_job_id)
> {
> struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
> struct dma_fence *fence = NULL;
> @@ -2486,7 +2484,7 @@ int amdgpu_fill_buffer(struct amdgpu_ttm_buffer_entity *entity,
> goto error;
>
> r = amdgpu_ttm_fill_mem(ring, &entity->base,
> - src_data, to, cur_size, resv,
> + 0, to, cur_size, resv,
> &next, true, k_job_id);
> if (r)
> goto error;
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
> index e01c2173d79f..585aee9a173b 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
> @@ -181,14 +181,13 @@ int amdgpu_copy_buffer(struct amdgpu_ring *ring,
> struct dma_resv *resv,
> struct dma_fence **fence,
> bool vm_needs_flush, uint32_t copy_flags);
> -int amdgpu_fill_buffer(struct amdgpu_ttm_buffer_entity *entity,
> - struct amdgpu_bo *bo,
> - uint32_t src_data,
> - struct dma_resv *resv,
> - struct dma_fence **out_fence,
> - struct dma_fence *dependency,
> - bool consider_clear_status,
> - u64 k_job_id);
> +int amdgpu_ttm_clear_buffer(struct amdgpu_ttm_buffer_entity *entity,
> + struct amdgpu_bo *bo,
> + struct dma_resv *resv,
> + struct dma_fence **out_fence,
> + struct dma_fence *dependency,
> + bool consider_clear_status,
> + u64 k_job_id);
>
> int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo);
> void amdgpu_ttm_recover_gart(struct ttm_buffer_object *tbo);
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