Re: [Intel-gfx] [PATCH v5 12/20] drm/msm: Use scheduler dependency handling

Daniel Vetter
2021-08-12T19:29:12Z

On Thu, Aug 05, 2021 at 12:46:57PM +0200, Daniel Vetter wrote:
> drm_sched_job_init is already at the right place, so this boils down
> to deleting code.
>
> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> Cc: Rob Clark <robdclark@gmail.com>
> Cc: Sean Paul <sean@poorly.run>
> Cc: Sumit Semwal <sumit.semwal@linaro.org>
> Cc: "Christian König" <christian.koenig@amd.com>
> Cc: linux-arm-msm@vger.kernel.org
> Cc: freedreno@lists.freedesktop.org
> Cc: linux-media@vger.kernel.org
> Cc: linaro-mm-sig@lists.linaro.org

Ping for ack&testing please.
-Daniel

> ---
> drivers/gpu/drm/msm/msm_gem.h | 5 -----
> drivers/gpu/drm/msm/msm_gem_submit.c | 19 +++++--------------
> drivers/gpu/drm/msm/msm_ringbuffer.c | 12 ------------
> 3 files changed, 5 insertions(+), 31 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/msm_gem.h b/drivers/gpu/drm/msm/msm_gem.h
> index f9e3ffb2309a..8bf0ac707fd7 100644
> --- a/drivers/gpu/drm/msm/msm_gem.h
> +++ b/drivers/gpu/drm/msm/msm_gem.h
> @@ -312,11 +312,6 @@ struct msm_gem_submit {
> struct ww_acquire_ctx ticket;
> uint32_t seqno; /* Sequence number of the submit on the ring */
>
> - /* Array of struct dma_fence * to block on before submitting this job.
> - */
> - struct xarray deps;
> - unsigned long last_dep;
> -
> /* Hw fence, which is created when the scheduler executes the job, and
> * is signaled when the hw finishes (via seqno write from cmdstream)
> */
> diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c
> index 96cea0ba4cfd..fb5a2eab27a2 100644
> --- a/drivers/gpu/drm/msm/msm_gem_submit.c
> +++ b/drivers/gpu/drm/msm/msm_gem_submit.c
> @@ -52,8 +52,6 @@ static struct msm_gem_submit *submit_create(struct drm_device *dev,
> return ERR_PTR(ret);
> }
>
> - xa_init_flags(&submit->deps, XA_FLAGS_ALLOC);
> -
> kref_init(&submit->ref);
> submit->dev = dev;
> submit->aspace = queue->ctx->aspace;
> @@ -72,8 +70,6 @@ void __msm_gem_submit_destroy(struct kref *kref)
> {
> struct msm_gem_submit *submit =
> container_of(kref, struct msm_gem_submit, ref);
> - unsigned long index;
> - struct dma_fence *fence;
> unsigned i;
>
> if (submit->fence_id) {
> @@ -82,12 +78,6 @@ void __msm_gem_submit_destroy(struct kref *kref)
> mutex_unlock(&submit->queue->lock);
> }
>
> - xa_for_each (&submit->deps, index, fence) {
> - dma_fence_put(fence);
> - }
> -
> - xa_destroy(&submit->deps);
> -
> dma_fence_put(submit->user_fence);
> dma_fence_put(submit->hw_fence);
>
> @@ -343,8 +333,9 @@ static int submit_fence_sync(struct msm_gem_submit *submit, bool no_implicit)
> if (no_implicit)
> continue;
>
> - ret = drm_gem_fence_array_add_implicit(&submit->deps, obj,
> - write);
> + ret = drm_sched_job_add_implicit_dependencies(&submit->base,
> + obj,
> + write);
> if (ret)
> break;
> }
> @@ -588,7 +579,7 @@ static struct drm_syncobj **msm_parse_deps(struct msm_gem_submit *submit,
> if (ret)
> break;
>
> - ret = drm_gem_fence_array_add(&submit->deps, fence);
> + ret = drm_sched_job_add_dependency(&submit->base, fence);
> if (ret)
> break;
>
> @@ -798,7 +789,7 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
> goto out_unlock;
> }
>
> - ret = drm_gem_fence_array_add(&submit->deps, in_fence);
> + ret = drm_sched_job_add_dependency(&submit->base, in_fence);
> if (ret)
> goto out_unlock;
> }
> diff --git a/drivers/gpu/drm/msm/msm_ringbuffer.c b/drivers/gpu/drm/msm/msm_ringbuffer.c
> index bd54c1412649..652b1dedd7c1 100644
> --- a/drivers/gpu/drm/msm/msm_ringbuffer.c
> +++ b/drivers/gpu/drm/msm/msm_ringbuffer.c
> @@ -11,17 +11,6 @@ static uint num_hw_submissions = 8;
> MODULE_PARM_DESC(num_hw_submissions, "The max # of jobs to write into ringbuffer (default 8)");
> module_param(num_hw_submissions, uint, 0600);
>
> -static struct dma_fence *msm_job_dependency(struct drm_sched_job *job,
> - struct drm_sched_entity *s_entity)
> -{
> - struct msm_gem_submit *submit = to_msm_submit(job);
> -
> - if (!xa_empty(&submit->deps))
> - return xa_erase(&submit->deps, submit->last_dep++);
> -
> - return NULL;
> -}
> -
> static struct dma_fence *msm_job_run(struct drm_sched_job *job)
> {
> struct msm_gem_submit *submit = to_msm_submit(job);
> @@ -52,7 +41,6 @@ static void msm_job_free(struct drm_sched_job *job)
> }
>
> const struct drm_sched_backend_ops msm_sched_ops = {
> - .dependency = msm_job_dependency,
> .run_job = msm_job_run,
> .free_job = msm_job_free
> };
> --
> 2.32.0
>

--
Daniel Vetter
Software Engineer, Intel Corporation