[RFC 4/5] dma-buf/fence-array: add fence_array_get_fences()

[Chris Wilson]

On Thu, Jun 23, 2016 at 12:29:49PM -0300, Gustavo Padovan wrote:
> From: Gustavo Padovan <gustavo.padovan at collabora.co.uk>
> 
> This function returns a copy of the array of fences.
> 
> Signed-off-by: Gustavo Padovan <gustavo.padovan at collabora.co.uk>
> ---
>  drivers/dma-buf/fence-array.c | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/drivers/dma-buf/fence-array.c b/drivers/dma-buf/fence-array.c
> index 601448a..ce98249 100644
> --- a/drivers/dma-buf/fence-array.c
> +++ b/drivers/dma-buf/fence-array.c
> @@ -33,6 +33,19 @@ static const char *fence_array_get_timeline_name(struct fence *fence)
>  	return "unbound";
>  }
>  
> +static struct fence **fence_array_get_fences(struct fence *fence)
> +{
> +	struct fence_array *array = to_fence_array(fence);
> +	struct fence **fences;
> +
> +	fences = kmalloc(array->num_fences * sizeof(*fences), GFP_KERNEL);
> +	if (!fences)
> +		return NULL;
> +
> +	memcpy(fences, array->fences, array->num_fences * sizeof(*fences));
> +	return fences;

	return kmemdup(array->fences,
		       array->num_fences * sizeof(*array->fences),
		       GFP_KERNEL);

-- 
Chris Wilson, Intel Open Source Technology Centre