On Wed, Oct 24, 2018 at 07:10:23PM +0530, Sharat Masetty wrote:
> Hi,
>
> Can you please review this and share your thoughts on this approach. We
> primarily need a clean way to release the finished fence in case the job
> was not pushed to the queue. So, this patch adds the new API to clean up
> the resources allocated in sched_job_init()
>
> Additionally I also move the fence_put(finished_fence) from the
> scheduler to the drivers handler of free_job(). The drivers get to use
> this new API. This is done so that the layer creating the sched object is
> the one freeing up the resources as well.
>
> Signed-off-by: Sharat Masetty <smasetty@xxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 2 +-
> drivers/gpu/drm/amd/amdgpu/amdgpu_job.c | 2 ++
> drivers/gpu/drm/etnaviv/etnaviv_sched.c | 2 ++
> drivers/gpu/drm/msm/msm_sched.c | 8 +++-----
Just a nit - msm_sched.c isn't a thing yet. Can you re-generate a patch against
drm-next so that if folks like this they can get it merged sooner?
Jordan
> drivers/gpu/drm/scheduler/gpu_scheduler.c | 11 +++++++++--
> drivers/gpu/drm/v3d/v3d_sched.c | 2 ++
> include/drm/gpu_scheduler.h | 1 +
> 7 files changed, 20 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> index 9c85a90..9a83152 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> @@ -1198,7 +1198,7 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
> r = amdgpu_ctx_add_fence(p->ctx, ring, p->fence, &seq);
> if (r) {
> dma_fence_put(p->fence);
> - dma_fence_put(&job->base.s_fence->finished);
> + drm_sched_job_cleanup(&job->base);
> amdgpu_job_free(job);
> amdgpu_mn_unlock(p->mn);
> return r;
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
> index 2bd5676..5d252d4 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
> @@ -100,6 +100,8 @@ static void amdgpu_job_free_cb(struct drm_sched_job *s_job)
> {
> struct amdgpu_job *job = container_of(s_job, struct amdgpu_job, base);
>
> + drm_sched_job_cleanup(s_job);
> +
> amdgpu_ring_priority_put(job->ring, s_job->s_priority);
> dma_fence_put(job->fence);
> amdgpu_sync_free(&job->sync);
> diff --git a/drivers/gpu/drm/etnaviv/etnaviv_sched.c b/drivers/gpu/drm/etnaviv/etnaviv_sched.c
> index 50d6b88..30398c5 100644
> --- a/drivers/gpu/drm/etnaviv/etnaviv_sched.c
> +++ b/drivers/gpu/drm/etnaviv/etnaviv_sched.c
> @@ -127,6 +127,8 @@ static void etnaviv_sched_free_job(struct drm_sched_job *sched_job)
> {
> struct etnaviv_gem_submit *submit = to_etnaviv_submit(sched_job);
>
> + drm_sched_job_cleanup(sched_job);
> +
> etnaviv_submit_put(submit);
> }
>
> diff --git a/drivers/gpu/drm/msm/msm_sched.c b/drivers/gpu/drm/msm/msm_sched.c
> index 70b7713..748acc6 100644
> --- a/drivers/gpu/drm/msm/msm_sched.c
> +++ b/drivers/gpu/drm/msm/msm_sched.c
> @@ -235,6 +235,8 @@ static void msm_sched_free_job(struct drm_sched_job *sched_job)
> struct msm_gpu *gpu = submit->gpu;
> int i;
>
> + drm_sched_job_cleanup(sched_job);
> +
> mutex_lock(&gpu->dev->struct_mutex);
>
> for (i = 0; i < submit->nr_bos; i++) {
> @@ -300,11 +302,7 @@ int msm_sched_job_init(struct drm_sched_job *sched_job)
> mutex_unlock(&ring->fence_idr_lock);
>
> if (submit->out_fence_id < 0) {
> - /*
> - * TODO: The scheduler's finished fence leaks here since the
> - * job will not be pushed to the queue. Need to update scheduler
> - * to fix this cleanly(?)
> - */
> + drm_sched_job_cleanup(sched_job);
> dma_fence_put(submit->out_fence);
> submit->out_fence = NULL;
> return -ENOMEM;
> diff --git a/drivers/gpu/drm/scheduler/gpu_scheduler.c b/drivers/gpu/drm/scheduler/gpu_scheduler.c
> index f5534ff..bbf9315 100644
> --- a/drivers/gpu/drm/scheduler/gpu_scheduler.c
> +++ b/drivers/gpu/drm/scheduler/gpu_scheduler.c
> @@ -214,7 +214,6 @@ static void drm_sched_entity_kill_jobs_cb(struct dma_fence *f,
> finish_cb);
> drm_sched_fence_finished(job->s_fence);
> WARN_ON(job->s_fence->parent);
> - dma_fence_put(&job->s_fence->finished);
> job->sched->ops->free_job(job);
> }
>
> @@ -480,7 +479,6 @@ static void drm_sched_job_finish(struct work_struct *work)
> drm_sched_queue_delayed_work(next);
> }
> spin_unlock(&sched->job_list_lock);
> - dma_fence_put(&s_job->s_fence->finished);
> sched->ops->free_job(s_job);
> }
>
> @@ -636,6 +634,15 @@ int drm_sched_job_init(struct drm_sched_job *job,
> EXPORT_SYMBOL(drm_sched_job_init);
>
> /**
> + * Cleanup sched_job resources
> + */
> +void drm_sched_job_cleanup(struct drm_sched_job *job)
> +{
> + dma_fence_put(&job->s_fence->finished);
> +}
> +EXPORT_SYMBOL(drm_sched_job_cleanup);
> +
> +/**
> * Return ture if we can push more jobs to the hw.
> */
> static bool drm_sched_ready(struct drm_gpu_scheduler *sched)
> diff --git a/drivers/gpu/drm/v3d/v3d_sched.c b/drivers/gpu/drm/v3d/v3d_sched.c
> index b07bece..4abd73c 100644
> --- a/drivers/gpu/drm/v3d/v3d_sched.c
> +++ b/drivers/gpu/drm/v3d/v3d_sched.c
> @@ -35,6 +35,8 @@
> {
> struct v3d_job *job = to_v3d_job(sched_job);
>
> + drm_sched_job_cleanup(sched_job);
> +
> v3d_exec_put(job->exec);
> }
>
> diff --git a/include/drm/gpu_scheduler.h b/include/drm/gpu_scheduler.h
> index 5c59c38..2ec3ddf 100644
> --- a/include/drm/gpu_scheduler.h
> +++ b/include/drm/gpu_scheduler.h
> @@ -213,6 +213,7 @@ int drm_sched_job_init(struct drm_sched_job *job,
> struct drm_gpu_scheduler *sched,
> struct drm_sched_entity *entity,
> void *owner);
> +void drm_sched_job_cleanup(struct drm_sched_job *job);
> void drm_sched_hw_job_reset(struct drm_gpu_scheduler *sched,
> struct drm_sched_job *job);
> void drm_sched_job_recovery(struct drm_gpu_scheduler *sched);
> --
> 1.9.1
>
--
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a Linux Foundation Collaborative Project
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