linux-kernel - Re: [PATCH v5 06/15] dmaengine: idxd: Add wq private data accessors

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Date:   Tue, 16 May 2023 14:57:52 -0700
From:   Dave Jiang <dave.jiang@...el.com>
To:     Tom Zanussi <tom.zanussi@...ux.intel.com>,
        herbert@...dor.apana.org.au, davem@...emloft.net,
        fenghua.yu@...el.com, vkoul@...nel.org
Cc:     tony.luck@...el.com, wajdi.k.feghali@...el.com,
        james.guilford@...el.com, kanchana.p.sridhar@...el.com,
        giovanni.cabiddu@...el.com, linux-kernel@...r.kernel.org,
        linux-crypto@...r.kernel.org, dmaengine@...r.kernel.org
Subject: Re: [PATCH v5 06/15] dmaengine: idxd: Add wq private data accessors



On 5/16/23 2:50 PM, Tom Zanussi wrote:
> Add the accessors idxd_wq_set_private() and idxd_wq_get_private()
> allowing users to set and retrieve a private void * associated with an
> idxd_wq.
> 
> The private data is stored in the idxd_dev.conf_dev associated with
> each idxd_wq.
> 
> Signed-off-by: Tom Zanussi <tom.zanussi@...ux.intel.com>
Reviewed-by: Dave Jiang <dave.jiang@...el.com>

> ---
>   drivers/dma/idxd/idxd.h | 10 ++++++++++
>   1 file changed, 10 insertions(+)
> 
> diff --git a/drivers/dma/idxd/idxd.h b/drivers/dma/idxd/idxd.h
> index 276b5f9cf967..971daf323655 100644
> --- a/drivers/dma/idxd/idxd.h
> +++ b/drivers/dma/idxd/idxd.h
> @@ -609,6 +609,16 @@ static inline int idxd_wq_refcount(struct idxd_wq *wq)
>   	return wq->client_count;
>   };
>   
> +static inline void idxd_wq_set_private(struct idxd_wq *wq, void *private)
> +{
> +	dev_set_drvdata(wq_confdev(wq), private);
> +}
> +
> +static inline void *idxd_wq_get_private(struct idxd_wq *wq)
> +{
> +	return dev_get_drvdata(wq_confdev(wq));
> +}
> +
>   /*
>    * Intel IAA does not support batch processing.
>    * The max batch size of device, max batch size of wq and