Re: [PATCH 15/27] drm/etnaviv: move object fence attachment to gem_submit path

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On Fri, 2017-12-01 at 11:36 +0100, Lucas Stach wrote:
> The object fencing has nothing to do with the actual GPU buffer submit,
> so move it to the gem submit path to have a cleaner split.
> 
> Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>

Reviewed-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>

regards
Philipp

> ---
>  drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c | 21 +++++++++++++++++++++
>  drivers/gpu/drm/etnaviv/etnaviv_gpu.c        |  7 -------
>  2 files changed, 21 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
> index 51ed34586c10..72468f11dd16 100644
> --- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
> +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
> @@ -180,6 +180,24 @@ static int submit_fence_sync(const struct etnaviv_gem_submit *submit)
>  	return ret;
>  }
>  
> +static void submit_attach_object_fences(struct etnaviv_gem_submit *submit)
> +{
> +	int i;
> +
> +	for (i = 0; i < submit->nr_bos; i++) {
> +		struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
> +
> +		if (submit->bos[i].flags & ETNA_SUBMIT_BO_WRITE)
> +			reservation_object_add_excl_fence(etnaviv_obj->resv,
> +							  submit->fence);
> +		else
> +			reservation_object_add_shared_fence(etnaviv_obj->resv,
> +							    submit->fence);
> +
> +		submit_unlock_object(submit, i);
> +	}
> +}
> +
>  static void submit_unpin_objects(struct etnaviv_gem_submit *submit)
>  {
>  	int i;
> @@ -335,6 +353,7 @@ static void submit_cleanup(struct etnaviv_gem_submit *submit)
>  	for (i = 0; i < submit->nr_bos; i++) {
>  		struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
>  
> +		/* if the GPU submit failed, objects might still be locked */
>  		submit_unlock_object(submit, i);
>  		drm_gem_object_put_unlocked(&etnaviv_obj->base);
>  	}
> @@ -507,6 +526,8 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
>  	if (ret)
>  		goto out;
>  
> +	submit_attach_object_fences(submit);
> +
>  	cmdbuf = NULL;
>  
>  	if (args->flags & ETNA_SUBMIT_FENCE_FD_OUT) {
> diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
> index 85f6ee1da016..d55a2137ee37 100644
> --- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
> +++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
> @@ -1443,13 +1443,6 @@ int etnaviv_gpu_submit(struct etnaviv_gpu *gpu,
>  		etnaviv_gem_mapping_reference(submit->bos[i].mapping);
>  		cmdbuf->bo_map[i] = submit->bos[i].mapping;
>  		atomic_inc(&etnaviv_obj->gpu_active);
> -
> -		if (submit->bos[i].flags & ETNA_SUBMIT_BO_WRITE)
> -			reservation_object_add_excl_fence(etnaviv_obj->resv,
> -							  fence);
> -		else
> -			reservation_object_add_shared_fence(etnaviv_obj->resv,
> -							    fence);
>  	}
>  	cmdbuf->nr_bos = submit->nr_bos;
>  	hangcheck_timer_reset(gpu);
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