Re: [PATCH] drm/sched: Use struct for drm_sched_init() params

[Tvrtko Ursulin]

On 22/01/2025 15:51, Boris Brezillon wrote:
> On Wed, 22 Jan 2025 15:08:20 +0100
> Philipp Stanner <phasta@xxxxxxxxxx> wrote:
>
> > --- a/drivers/gpu/drm/panthor/panthor_sched.c
> > +++ b/drivers/gpu/drm/panthor/panthor_sched.c
> > @@ -3272,6 +3272,7 @@ group_create_queue(struct panthor_group *group,
> >   		   const struct drm_panthor_queue_create *args)
> >   {
> >   	struct drm_gpu_scheduler *drm_sched;
> > +	struct drm_sched_init_params sched_params;
>
> nit: Could we use a struct initializer instead of a
> memset(0)+field-assignment?
>
> 	struct drm_sched_init_params sched_params = {
> 		.ops = &panthor_queue_sched_ops,
> 		.submit_wq = group->ptdev->scheduler->wq,
> 		.num_rqs = 1,
> 		.credit_limit = args->ringbuf_size / sizeof(u64),
> 		.hang_limit = 0,
> 		.timeout = msecs_to_jiffies(JOB_TIMEOUT_MS),
> 		.timeout_wq = group->ptdev->reset.wq,
> 		.name = "panthor-queue",
> 		.dev = group->ptdev->base.dev,
>          };

+1 on this as a general approach for the whole series. And I'd drop the 
explicit zeros and NULLs. Memsets could then go too.

Regards,

Tvrtko

> The same comment applies the panfrost changes BTW.
>
> >   	struct panthor_queue *queue;
> >   	int ret;
> >   
> > @@ -3289,6 +3290,8 @@ group_create_queue(struct panthor_group *group,
> >   	if (!queue)
> >   		return ERR_PTR(-ENOMEM);
> >   
> > +	memset(&sched_params, 0, sizeof(struct drm_sched_init_params));
> > +
> >   	queue->fence_ctx.id = dma_fence_context_alloc(1);
> >   	spin_lock_init(&queue->fence_ctx.lock);
> >   	INIT_LIST_HEAD(&queue->fence_ctx.in_flight_jobs);
> > @@ -3341,17 +3344,23 @@ group_create_queue(struct panthor_group *group,
> >   	if (ret)
> >   		goto err_free_queue;
> >   
> > +	sched_params.ops = &panthor_queue_sched_ops;
> > +	sched_params.submit_wq = group->ptdev->scheduler->wq;
> > +	sched_params.num_rqs = 1;
> >   	/*
> > -	 * Credit limit argument tells us the total number of instructions
> > +	 * The credit limit argument tells us the total number of instructions
> >   	 * across all CS slots in the ringbuffer, with some jobs requiring
> >   	 * twice as many as others, depending on their profiling status.
> >   	 */
> > -	ret = drm_sched_init(&queue->scheduler, &panthor_queue_sched_ops,
> > -			     group->ptdev->scheduler->wq, 1,
> > -			     args->ringbuf_size / sizeof(u64),
> > -			     0, msecs_to_jiffies(JOB_TIMEOUT_MS),
> > -			     group->ptdev->reset.wq,
> > -			     NULL, "panthor-queue", group->ptdev->base.dev);
> > +	sched_params.credit_limit = args->ringbuf_size / sizeof(u64);
> > +	sched_params.hang_limit = 0;
> > +	sched_params.timeout = msecs_to_jiffies(JOB_TIMEOUT_MS);
> > +	sched_params.timeout_wq = group->ptdev->reset.wq;
> > +	sched_params.score = NULL;
> > +	sched_params.name = "panthor-queue";
> > +	sched_params.dev = group->ptdev->base.dev;
> > +
> > +	ret = drm_sched_init(&queue->scheduler, &sched_params);
> >   	if (ret)
> >   		goto err_free_queue;