linux-kernel - Re: [PATCH v3 1/4] dma-buf/fence-array: add fence_is

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Date:	Tue, 5 Jul 2016 14:26:37 +0200
From:	Christian König <christian.koenig@....com>
To:	Gustavo Padovan <gustavo@...ovan.org>,
	<dri-devel@...ts.freedesktop.org>
CC:	<linux-kernel@...r.kernel.org>,
	Daniel Stone <daniels@...labora.com>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Rob Clark <robdclark@...il.com>,
	"Greg Hackmann" <ghackmann@...gle.com>,
	John Harrison <John.C.Harrison@...el.com>,
	<laurent.pinchart@...asonboard.com>, <seanpaul@...gle.com>,
	<marcheu@...gle.com>, <m.chehab@...sung.com>,
	Sumit Semwal <sumit.semwal@...aro.org>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Gustavo Padovan <gustavo.padovan@...labora.co.uk>,
	Chris Wilson <chris@...is-wilson.co.uk>
Subject: Re: [PATCH v3 1/4] dma-buf/fence-array: add fence_is_array()

Am 05.07.2016 um 01:57 schrieb Gustavo Padovan:
> From: Gustavo Padovan <gustavo.padovan@...labora.co.uk>
>
> Add helper to check if fence is array.
>
> v2: Comments from Chris Wilson
> 	- remove ternary if from ops comparison
> 	- add EXPORT_SYMBOL(fence_array_ops)
>
> Cc: Chris Wilson <chris@...is-wilson.co.uk>
> Cc: Christian König <christian.koenig@....com>
> Signed-off-by: Gustavo Padovan <gustavo.padovan@...labora.co.uk>
> Reviewed-by: Chris Wilson <chris@...is-wilson.co.uk>

For this patch Reviewed-by: Christian König <christian.koenig@....com>.

I'm not deep enough into the sync file code to fully judge, but the 
remaining patches look good to me as well.

So for patch #2-#4 Acked-by: Christian König <christian.koenig@....com>.

Regards,
Christian.

> ---
>   drivers/dma-buf/fence-array.c |  1 +
>   include/linux/fence-array.h   | 10 ++++++++++
>   2 files changed, 11 insertions(+)
>
> diff --git a/drivers/dma-buf/fence-array.c b/drivers/dma-buf/fence-array.c
> index a8731c8..ee50022 100644
> --- a/drivers/dma-buf/fence-array.c
> +++ b/drivers/dma-buf/fence-array.c
> @@ -99,6 +99,7 @@ const struct fence_ops fence_array_ops = {
>   	.wait = fence_default_wait,
>   	.release = fence_array_release,
>   };
> +EXPORT_SYMBOL(fence_array_ops);
>   
>   /**
>    * fence_array_create - Create a custom fence array
> diff --git a/include/linux/fence-array.h b/include/linux/fence-array.h
> index 86baaa4..a44794e 100644
> --- a/include/linux/fence-array.h
> +++ b/include/linux/fence-array.h
> @@ -52,6 +52,16 @@ struct fence_array {
>   extern const struct fence_ops fence_array_ops;
>   
>   /**
> + * fence_is_array - check if a fence is from the array subsclass
> + *
> + * Return true if it is a fence_array and false otherwise.
> + */
> +static inline bool fence_is_array(struct fence *fence)
> +{
> +	return fence->ops == &fence_array_ops;
> +}
> +
> +/**
>    * to_fence_array - cast a fence to a fence_array
>    * @fence: fence to cast to a fence_array
>    *