On 2018-10-18 8:44 p.m., Andrey Grodzovsky wrote:
> Problem:
> A particular scheduler may become unsuable (underlying HW) after
> some event (e.g. GPU reset). If it's later chosen by
> the get free sched. policy a command will fail to be
> submitted.
>
> Fix:
> Add a driver specific callback to report the sced. status so
> rq with bad sched. can be avoided in favor of working one or
> none in which case job init will fail.
>
> Signed-off-by: Andrey Grodzovsky <andrey.grodzov...@amd.com>
>
> [...]
>
> @@ -450,7 +457,7 @@ int amdgpu_fence_driver_init_ring(struct amdgpu_ring
> *ring,
>
> r = drm_sched_init(&ring->sched, &amdgpu_sched_ops,
> num_hw_submission, amdgpu_job_hang_limit,
> - timeout, ring->name);
> + timeout, ring->name, amdgpu_ring_ready);
> if (r) {
> DRM_ERROR("Failed to create scheduler on ring %s.\n",
> ring->name);
> diff --git a/drivers/gpu/drm/etnaviv/etnaviv_sched.c
> b/drivers/gpu/drm/etnaviv/etnaviv_sched.c
> index f8c5f1e..5094013 100644
> --- a/drivers/gpu/drm/etnaviv/etnaviv_sched.c
> +++ b/drivers/gpu/drm/etnaviv/etnaviv_sched.c
> @@ -178,7 +178,8 @@ int etnaviv_sched_init(struct etnaviv_gpu *gpu)
>
> ret = drm_sched_init(&gpu->sched, &etnaviv_sched_ops,
> etnaviv_hw_jobs_limit, etnaviv_job_hang_limit,
> - msecs_to_jiffies(500), dev_name(gpu->dev));
> + msecs_to_jiffies(500), dev_name(gpu->dev),
> + NULL);
Indentation looks wrong for the NULL here...
> diff --git a/drivers/gpu/drm/scheduler/sched_entity.c
> b/drivers/gpu/drm/scheduler/sched_entity.c
> index 3e22a54..320c77a 100644
> --- a/drivers/gpu/drm/scheduler/sched_entity.c
> +++ b/drivers/gpu/drm/scheduler/sched_entity.c
> @@ -130,7 +130,16 @@ drm_sched_entity_get_free_sched(struct drm_sched_entity
> *entity)
> int i;
>
> for (i = 0; i < entity->num_rq_list; ++i) {
> - num_jobs = atomic_read(&entity->rq_list[i]->sched->num_jobs);
> + struct drm_gpu_scheduler *sched = entity->rq_list[i]->sched;
> +
> + if (entity->rq_list[i]->sched->ready &&
> + !entity->rq_list[i]->sched->ready(sched)) {
... the second line of the if here...
> diff --git a/drivers/gpu/drm/v3d/v3d_sched.c b/drivers/gpu/drm/v3d/v3d_sched.c
> index 80b641f..e06cc0d 100644
> --- a/drivers/gpu/drm/v3d/v3d_sched.c
> +++ b/drivers/gpu/drm/v3d/v3d_sched.c
> @@ -212,7 +212,8 @@ v3d_sched_init(struct v3d_dev *v3d)
> &v3d_sched_ops,
> hw_jobs_limit, job_hang_limit,
> msecs_to_jiffies(hang_limit_ms),
> - "v3d_bin");
> + "v3d_bin",
> + NULL);
... the NULL here...
> diff --git a/include/drm/gpu_scheduler.h b/include/drm/gpu_scheduler.h
> index 0684dcd..a6e18fe 100644
> --- a/include/drm/gpu_scheduler.h
> +++ b/include/drm/gpu_scheduler.h
> @@ -283,12 +283,15 @@ struct drm_gpu_scheduler {
> spinlock_t job_list_lock;
> int hang_limit;
> atomic_t num_jobs;
> +
> + bool (*ready)(struct drm_gpu_scheduler *sched);
> };
... and the new line here.
Which editor are you using?
--
Earthling Michel Dänzer | http://www.amd.com
Libre software enthusiast | Mesa and X developer
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