linux-kernel - RE: [PATCH RFC] net/sched: use real_num_tx_queues in dev

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Message-ID: <SA1PR10MB6445AE5B65A9C85838142CE08C819@SA1PR10MB6445.namprd10.prod.outlook.com>
Date:   Tue, 21 Mar 2023 10:05:10 +0000
From:   Praveen Kannoju <praveen.kannoju@...cle.com>
To:     Praveen Kannoju <praveen.kannoju@...cle.com>,
        "jhs@...atatu.com" <jhs@...atatu.com>,
        "xiyou.wangcong@...il.com" <xiyou.wangcong@...il.com>,
        "jiri@...nulli.us" <jiri@...nulli.us>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     Rajesh Sivaramasubramaniom 
        <rajesh.sivaramasubramaniom@...cle.com>,
        Rama Nichanamatlu <rama.nichanamatlu@...cle.com>,
        Manjunath Patil <manjunath.b.patil@...cle.com>
Subject: RE: [PATCH RFC] net/sched: use real_num_tx_queues in dev_watchdog()

Ping. 

> -----Original Message-----
> From: Praveen Kumar Kannoju <praveen.kannoju@...cle.com>
> Sent: 16 March 2023 12:04 AM
> To: jhs@...atatu.com; xiyou.wangcong@...il.com; jiri@...nulli.us; davem@...emloft.net; edumazet@...gle.com;
> kuba@...nel.org; pabeni@...hat.com; netdev@...r.kernel.org; linux-kernel@...r.kernel.org
> Cc: Rajesh Sivaramasubramaniom <rajesh.sivaramasubramaniom@...cle.com>; Rama Nichanamatlu
> <rama.nichanamatlu@...cle.com>; Manjunath Patil <manjunath.b.patil@...cle.com>; Praveen Kannoju
> <praveen.kannoju@...cle.com>
> Subject: [PATCH RFC] net/sched: use real_num_tx_queues in dev_watchdog()
> 
> Currently dev_watchdog() loops through num_tx_queues[Number of TX queues allocated at alloc_netdev_mq() time] instead of
> real_num_tx_queues [Number of TX queues currently active in device] to detect transmit queue time out. Make this efficient by
> using real_num_tx_queues.
> 
> Signed-off-by: Praveen Kumar Kannoju <praveen.kannoju@...cle.com>
> ---
> PS: Please let me know if I am missing something obvious here.
>  net/sched/sch_generic.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c index a9aadc4e6858..e7d41a25f0e8 100644
> --- a/net/sched/sch_generic.c
> +++ b/net/sched/sch_generic.c
> @@ -506,7 +506,7 @@ static void dev_watchdog(struct timer_list *t)
>  			unsigned int i;
>  			unsigned long trans_start;
> 
> -			for (i = 0; i < dev->num_tx_queues; i++) {
> +			for (i = 0; i < dev->real_num_tx_queues; i++) {
>  				struct netdev_queue *txq;
> 
>  				txq = netdev_get_tx_queue(dev, i);
> --
> 2.31.1