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Message-ID: <4bf843a9-9727-43bc-adb2-66402338dd15@amd.com>
Date: Tue, 4 Nov 2025 15:13:02 +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>, Felix Kuehling <Felix.Kuehling@....com>,
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 v1 03/20] drm/amdgpu: remove direct_submit arg from
amdgpu_copy_buffer
On 11/4/25 09:35, Pierre-Eric Pelloux-Prayer wrote:
> It was always false.
>
> 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_benchmark.c | 2 +-
> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 20 +++++++------------
> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 2 +-
> drivers/gpu/drm/amd/amdkfd/kfd_migrate.c | 2 +-
> 4 files changed, 10 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c
> index 199693369c7c..02c2479a8840 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c
> @@ -39,7 +39,7 @@ static int amdgpu_benchmark_do_move(struct amdgpu_device *adev, unsigned size,
> for (i = 0; i < n; i++) {
> struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
> r = amdgpu_copy_buffer(ring, saddr, daddr, size, NULL, &fence,
> - false, false, 0);
> + false, 0);
> if (r)
> goto exit_do_move;
> r = dma_fence_wait(fence, false);
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> index c66f00434991..fce22712396b 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> @@ -354,7 +354,7 @@ static int amdgpu_ttm_copy_mem_to_mem(struct amdgpu_device *adev,
> }
>
> r = amdgpu_copy_buffer(ring, from, to, cur_size, resv,
> - &next, false, true, copy_flags);
> + &next, true, copy_flags);
> if (r)
> goto error;
>
> @@ -2211,16 +2211,13 @@ void amdgpu_ttm_set_buffer_funcs_status(struct amdgpu_device *adev, bool enable)
> }
>
> static int amdgpu_ttm_prepare_job(struct amdgpu_device *adev,
> - bool direct_submit,
> unsigned int num_dw,
> struct dma_resv *resv,
> bool vm_needs_flush,
> struct amdgpu_job **job,
> bool delayed, u64 k_job_id)
> {
> - enum amdgpu_ib_pool_type pool = direct_submit ?
> - AMDGPU_IB_POOL_DIRECT :
> - AMDGPU_IB_POOL_DELAYED;
> + enum amdgpu_ib_pool_type pool = AMDGPU_IB_POOL_DELAYED;
> int r;
> struct drm_sched_entity *entity = delayed ? &adev->mman.low_pr :
> &adev->mman.high_pr;
> @@ -2246,7 +2243,7 @@ static int amdgpu_ttm_prepare_job(struct amdgpu_device *adev,
> int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset,
> uint64_t dst_offset, uint32_t byte_count,
> struct dma_resv *resv,
> - struct dma_fence **fence, bool direct_submit,
> + struct dma_fence **fence,
> bool vm_needs_flush, uint32_t copy_flags)
> {
> struct amdgpu_device *adev = ring->adev;
> @@ -2256,7 +2253,7 @@ int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset,
> unsigned int i;
> int r;
>
> - if (!direct_submit && !ring->sched.ready) {
> + if (!ring->sched.ready) {
> dev_err(adev->dev,
> "Trying to move memory with ring turned off.\n");
> return -EINVAL;
> @@ -2265,7 +2262,7 @@ int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset,
> max_bytes = adev->mman.buffer_funcs->copy_max_bytes;
> num_loops = DIV_ROUND_UP(byte_count, max_bytes);
> num_dw = ALIGN(num_loops * adev->mman.buffer_funcs->copy_num_dw, 8);
> - r = amdgpu_ttm_prepare_job(adev, direct_submit, num_dw,
> + r = amdgpu_ttm_prepare_job(adev, num_dw,
> resv, vm_needs_flush, &job, false,
> AMDGPU_KERNEL_JOB_ID_TTM_COPY_BUFFER);
> if (r)
> @@ -2283,10 +2280,7 @@ int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset,
>
> amdgpu_ring_pad_ib(ring, &job->ibs[0]);
> WARN_ON(job->ibs[0].length_dw > num_dw);
> - if (direct_submit)
> - r = amdgpu_job_submit_direct(job, ring, fence);
> - else
> - *fence = amdgpu_job_submit(job);
> + *fence = amdgpu_job_submit(job);
> if (r)
> goto error_free;
>
> @@ -2315,7 +2309,7 @@ static int amdgpu_ttm_fill_mem(struct amdgpu_ring *ring, uint32_t src_data,
> max_bytes = adev->mman.buffer_funcs->fill_max_bytes;
> num_loops = DIV_ROUND_UP_ULL(byte_count, max_bytes);
> num_dw = ALIGN(num_loops * adev->mman.buffer_funcs->fill_num_dw, 8);
> - r = amdgpu_ttm_prepare_job(adev, false, num_dw, resv, vm_needs_flush,
> + r = amdgpu_ttm_prepare_job(adev, num_dw, resv, vm_needs_flush,
> &job, delayed, k_job_id);
> if (r)
> return r;
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
> index 577ee04ce0bf..50e40380fe95 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
> @@ -166,7 +166,7 @@ void amdgpu_ttm_set_buffer_funcs_status(struct amdgpu_device *adev,
> int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset,
> uint64_t dst_offset, uint32_t byte_count,
> struct dma_resv *resv,
> - struct dma_fence **fence, bool direct_submit,
> + struct dma_fence **fence,
> bool vm_needs_flush, uint32_t copy_flags);
> int amdgpu_ttm_clear_buffer(struct amdgpu_bo *bo,
> struct dma_resv *resv,
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
> index 46c84fc60af1..378af0b2aaa9 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
> @@ -153,7 +153,7 @@ svm_migrate_copy_memory_gart(struct amdgpu_device *adev, dma_addr_t *sys,
> }
>
> r = amdgpu_copy_buffer(ring, gart_s, gart_d, size * PAGE_SIZE,
> - NULL, &next, false, true, 0);
> + NULL, &next, true, 0);
> if (r) {
> dev_err(adev->dev, "fail %d to copy memory\n", r);
> goto out_unlock;
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