[AMD Official Use Only] Yes, exactly. AMDGPU_FENCE_FLAG_EMBED_IN_JOB_BIT is the private flag only for amdgpu. Maybe, it's cleaner to define another amdgpu_fence_ops which is dedicated for job-embedded fence. Thanks, Ray From: Grodzovsky, Andrey <Andrey.Grodzovsky@xxxxxxx> Sent: Wednesday, December 15, 2021 1:09 AM To: Huang, Ray <Ray.Huang@xxxxxxx>; dri-devel@xxxxxxxxxxxxxxxxxxxxx; Koenig, Christian <Christian.Koenig@xxxxxxx>; Daniel Vetter <daniel.vetter@xxxxxxxx>; Sumit Semwal <sumit.semwal@xxxxxxxxxx> Cc: Deucher, Alexander <Alexander.Deucher@xxxxxxx>; amd-gfx@xxxxxxxxxxxxxxxxxxxxx; Liu, Monk <Monk.Liu@xxxxxxx>; linux-media@xxxxxxxxxxxxxxx Subject: Re: [PATCH v2] drm/amdgpu: introduce new amdgpu_fence object to indicate the job embedded fence On 2021-12-14 12:03 p.m., Andrey Grodzovsky wrote: - - if (job != NULL) { - /* mark this fence has a parent job */ - set_bit(AMDGPU_FENCE_FLAG_EMBED_IN_JOB_BIT, &fence->flags); + if (job) + dma_fence_init(fence, &amdgpu_job_fence_ops, + &ring->fence_drv.lock, + adev->fence_context + ring->idx, seq); + else + dma_fence_init(fence, &amdgpu_fence_ops, + &ring->fence_drv.lock, + adev->fence_context + ring->idx, seq); } It's probably me missing something but why can't we just move setting of AMDGPU_FENCE_FLAG_EMBED_IN_JOB_BIT to before dma_fence_init here or even into amdgpu_job_alloc instead of all the refactoring ? Andrey My bad, I see now that dma_fence_init just overrides flags to 0 and immediately call the trace . But why then can't we add dma_fence_init_with_flags wrapper to dma-fence ? Andrey