Re: [PATCH 06/24] drm/etnaviv: stop using dma_resv_excl_fence

[Daniel Vetter <daniel@ffwll.ch>]

On Tue, Dec 07, 2021 at 01:33:53PM +0100, Christian König wrote:
> We can get the excl fence together with the shared ones as well.
> 
> Signed-off-by: Christian König <christian.koenig@amd.com>

Pls cc driver maintainers.

dim add-missing-cc

is your friend if you're lazy can even combine that with git rebase -x.
Same for all the other driver patches, some acks/testing would be good to
avoid fallout (we had a bit much of that with all these I think).

> ---
>  drivers/gpu/drm/etnaviv/etnaviv_gem.h        |  1 -
>  drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c | 14 +++++---------
>  drivers/gpu/drm/etnaviv/etnaviv_sched.c      | 10 ----------
>  3 files changed, 5 insertions(+), 20 deletions(-)
> 
> diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.h b/drivers/gpu/drm/etnaviv/etnaviv_gem.h
> index 98e60df882b6..f596d743baa3 100644
> --- a/drivers/gpu/drm/etnaviv/etnaviv_gem.h
> +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.h
> @@ -80,7 +80,6 @@ struct etnaviv_gem_submit_bo {
>  	u64 va;
>  	struct etnaviv_gem_object *obj;
>  	struct etnaviv_vram_mapping *mapping;
> -	struct dma_fence *excl;
>  	unsigned int nr_shared;
>  	struct dma_fence **shared;
>  };
> diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
> index 64c90ff348f2..4286dc93fdaa 100644
> --- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
> +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
> @@ -188,15 +188,11 @@ static int submit_fence_sync(struct etnaviv_gem_submit *submit)
>  		if (submit->flags & ETNA_SUBMIT_NO_IMPLICIT)
>  			continue;
>  
> -		if (bo->flags & ETNA_SUBMIT_BO_WRITE) {
> -			ret = dma_resv_get_fences(robj, true, &bo->nr_shared,
> -						  &bo->shared);
> -			if (ret)
> -				return ret;
> -		} else {
> -			bo->excl = dma_fence_get(dma_resv_excl_fence(robj));
> -		}
> -
> +		ret = dma_resv_get_fences(robj,
> +					  !!(bo->flags & ETNA_SUBMIT_BO_WRITE),

Afaik the cast to bool !! here is overkill, compiler will do that for you
or something like that. With that dropped:

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>


> +					  &bo->nr_shared, &bo->shared);
> +		if (ret)
> +			return ret;
>  	}
>  
>  	return ret;
> diff --git a/drivers/gpu/drm/etnaviv/etnaviv_sched.c b/drivers/gpu/drm/etnaviv/etnaviv_sched.c
> index 180bb633d5c5..8c038a363d15 100644
> --- a/drivers/gpu/drm/etnaviv/etnaviv_sched.c
> +++ b/drivers/gpu/drm/etnaviv/etnaviv_sched.c
> @@ -39,16 +39,6 @@ etnaviv_sched_dependency(struct drm_sched_job *sched_job,
>  		struct etnaviv_gem_submit_bo *bo = &submit->bos[i];
>  		int j;
>  
> -		if (bo->excl) {
> -			fence = bo->excl;
> -			bo->excl = NULL;
> -
> -			if (!dma_fence_is_signaled(fence))
> -				return fence;
> -
> -			dma_fence_put(fence);
> -		}
> -
>  		for (j = 0; j < bo->nr_shared; j++) {
>  			if (!bo->shared[j])
>  				continue;
> -- 
> 2.25.1
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch