linux-kernel - Re: [net-next PATCH 2/4] netdev: make napi_schedule return bool on NAPI successful schedule

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Date:   Mon, 2 Oct 2023 09:08:14 -0700
From:   Jeff Johnson <quic_jjohnson@...cinc.com>
To:     Christian Marangi <ansuelsmth@...il.com>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Leon Romanovsky <leon@...nel.org>,
        Wolfgang Grandegger <wg@...ndegger.com>,
        Marc Kleine-Budde <mkl@...gutronix.de>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Chris Snook <chris.snook@...il.com>,
        Raju Rangoju <rajur@...lsio.com>,
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Subject: Re: [net-next PATCH 2/4] netdev: make napi_schedule return bool on
 NAPI successful schedule

On 10/2/2023 8:10 AM, Christian Marangi wrote:
> Change napi_schedule to return a bool on NAPI successful schedule. This
> might be useful for some driver to do additional step after a NAPI ahs

nit:s/ahs/has/

> been scheduled.
> 
> Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
> ---
>   include/linux/netdevice.h | 11 +++++++++--
>   1 file changed, 9 insertions(+), 2 deletions(-)
> 
> diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
> index 7e520c14eb8c..2bead8e2a14d 100644
> --- a/include/linux/netdevice.h
> +++ b/include/linux/netdevice.h
> @@ -490,11 +490,18 @@ bool napi_schedule_prep(struct napi_struct *n);
>    *
>    * Schedule NAPI poll routine to be called if it is not already
>    * running.
> + * Return true if we schedule a NAPI or false if not.
> + * Refer to napi_schedule_prep() for additional reason on why
> + * a NAPI might not be scheduled.
>    */
> -static inline void napi_schedule(struct napi_struct *n)
> +static inline bool napi_schedule(struct napi_struct *n)
>   {
> -	if (napi_schedule_prep(n))
> +	if (napi_schedule_prep(n)) {
>   		__napi_schedule(n);
> +		return true;
> +	}
> +
> +	return false;
>   }
>   
>   /**