[Linaro-mm-sig] Re: [PATCH 1/4] drm/etnaviv: Use scheduler dependency handling

Am 31.03.22 um 22:46 schrieb Daniel Vetter:

We need to pull the drm_sched_job_init much earlier, but that's very minor surgery.

v2: Actually fix up cleanup paths by calling drm_sched_job_init, which I wanted to to in the previous round (and did, for all other drivers). Spotted by Lucas.

v3: Rebase over renamed functions to add dependencies.

v4: Rebase over patches from Christian.

v5: More rebasing over work from Christian.

Signed-off-by: Daniel Vetter daniel.vetter@intel.com Cc: Lucas Stach l.stach@pengutronix.de Cc: Russell King linux+etnaviv@armlinux.org.uk Cc: Christian Gmeiner christian.gmeiner@gmail.com Cc: Sumit Semwal sumit.semwal@linaro.org Cc: "Christian König" christian.koenig@amd.com Cc: etnaviv@lists.freedesktop.org Cc: linux-media@vger.kernel.org Cc: linaro-mm-sig@lists.linaro.org

Reviewed-by: Christian König christian.koenig@amd.com

But Lucas should probably ack that we merge it through drm-misc-next.

---

drivers/gpu/drm/etnaviv/etnaviv_gem.h | 4 +- drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c | 51 +++++++++++-------- drivers/gpu/drm/etnaviv/etnaviv_sched.c | 53 +------------------- drivers/gpu/drm/etnaviv/etnaviv_sched.h | 3 +- 4 files changed, 35 insertions(+), 76 deletions(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.h b/drivers/gpu/drm/etnaviv/etnaviv_gem.h index 8983a0ef383e..63688e6e4580 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gem.h +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.h @@ -80,8 +80,6 @@ struct etnaviv_gem_submit_bo { u64 va; struct etnaviv_gem_object *obj; struct etnaviv_vram_mapping *mapping;

• unsigned int nr_fences;
• struct dma_fence **fences; };

/* Created per submit-ioctl, to track bo's and cmdstream bufs, etc, @@ -94,7 +92,7 @@ struct etnaviv_gem_submit { struct etnaviv_file_private *ctx; struct etnaviv_gpu *gpu; struct etnaviv_iommu_context *mmu_context, *prev_mmu_context;

• struct dma_fence *out_fence, *in_fence;

• struct dma_fence *out_fence; int out_fence_id; struct list_head node; /* GPU active submit list */ struct etnaviv_cmdbuf cmdbuf;

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c index 592cbb38609a..5f502c49aec2 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c @@ -188,9 +188,9 @@ static int submit_fence_sync(struct etnaviv_gem_submit *submit) if (submit->flags & ETNA_SUBMIT_NO_IMPLICIT) continue;

• ret = dma_resv_get_fences(robj,
  

• 			  bo->flags & ETNA_SUBMIT_BO_WRITE,
  

• 			  &bo->nr_fences, &bo->fences);
  

• ret = drm_sched_job_add_implicit_dependencies(&submit->sched_job,
  

• 					      &bo->obj->base,
  

• 					      bo->flags & ETNA_SUBMIT_BO_WRITE);
  

  if (ret) return ret; }

@@ -398,8 +398,6 @@ static void submit_cleanup(struct kref *kref) wake_up_all(&submit->gpu->fence_event);

• if (submit->in_fence)

• dma_fence_put(submit->in_fence);
  

  if (submit->out_fence) { /* first remove from IDR, so fence can not be found anymore */ mutex_lock(&submit->gpu->fence_lock);

@@ -530,58 +528,69 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, ret = etnaviv_cmdbuf_init(priv->cmdbuf_suballoc, &submit->cmdbuf, ALIGN(args->stream_size, 8) + 8); if (ret)

• goto err_submit_objects;
  

• goto err_submit_put;
  

submit->ctx = file->driver_priv; submit->mmu_context = etnaviv_iommu_context_get(submit->ctx->mmu); submit->exec_state = args->exec_state; submit->flags = args->flags;

• ret = drm_sched_job_init(&submit->sched_job,

• 		 &ctx->sched_entity[args->pipe],
  

• 		 submit->ctx);
  

• if (ret)

• goto err_submit_put;
  

• ret = submit_lookup_objects(submit, file, bos, args->nr_bos); if (ret)

• goto err_submit_objects;
  

• goto err_submit_job;
  

if ((priv->mmu_global->version != ETNAVIV_IOMMU_V2) && !etnaviv_cmd_validate_one(gpu, stream, args->stream_size / 4, relocs, args->nr_relocs)) { ret = -EINVAL;

• goto err_submit_objects;
  

• goto err_submit_job;
  

  }

if (args->flags & ETNA_SUBMIT_FENCE_FD_IN) {

• submit->in_fence = sync_file_get_fence(args->fence_fd);
  

• if (!submit->in_fence) {
  

• struct dma_fence *in_fence = sync_file_get_fence(args->fence_fd);
  

• if (!in_fence) {
  ret = -EINVAL;
  

• 	goto err_submit_objects;
  

• 	goto err_submit_job;
  

  }

• ret = drm_sched_job_add_dependency(&submit->sched_job,
  

• 				   in_fence);
  

• if (ret)
  

• 	goto err_submit_job;
  

  }

ret = submit_pin_objects(submit); if (ret)

• goto err_submit_objects;
  

• goto err_submit_job;
  

ret = submit_reloc(submit, stream, args->stream_size / 4, relocs, args->nr_relocs); if (ret)

• goto err_submit_objects;
  

• goto err_submit_job;
  

ret = submit_perfmon_validate(submit, args->exec_state, pmrs); if (ret)

• goto err_submit_objects;
  

• goto err_submit_job;
  

memcpy(submit->cmdbuf.vaddr, stream, args->stream_size); ret = submit_lock_objects(submit, &ticket); if (ret)

• goto err_submit_objects;
  

• goto err_submit_job;
  

ret = submit_fence_sync(submit); if (ret)

• goto err_submit_objects;
  

• goto err_submit_job;
  

• ret = etnaviv_sched_push_job(&ctx->sched_entity[args->pipe], submit);

• ret = etnaviv_sched_push_job(submit); if (ret)

• goto err_submit_objects;
  

• goto err_submit_job;
  

submit_attach_object_fences(submit); @@ -595,7 +604,7 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, sync_file = sync_file_create(submit->out_fence); if (!sync_file) { ret = -ENOMEM;

• 	goto err_submit_objects;
  

• 	goto err_submit_job;
  

  } fd_install(out_fence_fd, sync_file->file); }

@@ -603,7 +612,9 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, args->fence_fd = out_fence_fd; args->fence = submit->out_fence_id; -err_submit_objects: +err_submit_job:

• drm_sched_job_cleanup(&submit->sched_job);

+err_submit_put: etnaviv_submit_put(submit); err_submit_ww_acquire: diff --git a/drivers/gpu/drm/etnaviv/etnaviv_sched.c b/drivers/gpu/drm/etnaviv/etnaviv_sched.c index a8452ce10e3a..72e2553fbc98 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_sched.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_sched.c @@ -17,48 +17,6 @@ module_param_named(job_hang_limit, etnaviv_job_hang_limit, int , 0444); static int etnaviv_hw_jobs_limit = 4; module_param_named(hw_job_limit, etnaviv_hw_jobs_limit, int , 0444); -static struct dma_fence * -etnaviv_sched_dependency(struct drm_sched_job *sched_job,

• 	 struct drm_sched_entity *entity)
  

-{

• struct etnaviv_gem_submit *submit = to_etnaviv_submit(sched_job);
• struct dma_fence *fence;
• int i;
• if (unlikely(submit->in_fence)) {

• fence = submit->in_fence;
  

• submit->in_fence = NULL;
  

• if (!dma_fence_is_signaled(fence))
  

• 	return fence;
  

• dma_fence_put(fence);
  

• }
• for (i = 0; i < submit->nr_bos; i++) {

• struct etnaviv_gem_submit_bo *bo = &submit->bos[i];
  

• int j;
  

• for (j = 0; j < bo->nr_fences; j++) {
  

• 	if (!bo->fences[j])
  

• 		continue;
  

• 	fence = bo->fences[j];
  

• 	bo->fences[j] = NULL;
  

• 	if (!dma_fence_is_signaled(fence))
  

• 		return fence;
  

• 	dma_fence_put(fence);
  

• }
  

• kfree(bo->fences);
  

• bo->nr_fences = 0;
  

• bo->fences = NULL;
  

• }
• return NULL;

-}

• static struct dma_fence *etnaviv_sched_run_job(struct drm_sched_job *sched_job) { struct etnaviv_gem_submit *submit = to_etnaviv_submit(sched_job);

@@ -132,29 +90,22 @@ static void etnaviv_sched_free_job(struct drm_sched_job *sched_job) } static const struct drm_sched_backend_ops etnaviv_sched_ops = {

• .dependency = etnaviv_sched_dependency, .run_job = etnaviv_sched_run_job, .timedout_job = etnaviv_sched_timedout_job, .free_job = etnaviv_sched_free_job, };

-int etnaviv_sched_push_job(struct drm_sched_entity *sched_entity,

• 	   struct etnaviv_gem_submit *submit)
  

+int etnaviv_sched_push_job(struct etnaviv_gem_submit *submit) { int ret = 0; /* * Hold the fence lock across the whole operation to avoid jobs being * pushed out of order with regard to their sched fence seqnos as

• * allocated in drm_sched_job_init.
  

• * allocated in drm_sched_job_arm.
  

  */ mutex_lock(&submit->gpu->fence_lock);

• ret = drm_sched_job_init(&submit->sched_job, sched_entity,

• 		 submit->ctx);
  

• if (ret)

• goto out_unlock;
  

• drm_sched_job_arm(&submit->sched_job);

submit->out_fence = dma_fence_get(&submit->sched_job.s_fence->finished); diff --git a/drivers/gpu/drm/etnaviv/etnaviv_sched.h b/drivers/gpu/drm/etnaviv/etnaviv_sched.h index c0a6796e22c9..baebfa069afc 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_sched.h +++ b/drivers/gpu/drm/etnaviv/etnaviv_sched.h @@ -18,7 +18,6 @@ struct etnaviv_gem_submit *to_etnaviv_submit(struct drm_sched_job *sched_job) int etnaviv_sched_init(struct etnaviv_gpu *gpu); void etnaviv_sched_fini(struct etnaviv_gpu *gpu); -int etnaviv_sched_push_job(struct drm_sched_entity *sched_entity,

• 	   struct etnaviv_gem_submit *submit);
  

+int etnaviv_sched_push_job(struct etnaviv_gem_submit *submit); #endif /* __ETNAVIV_SCHED_H__ */