netdev - Re: [RFC PATCH 12/13] net: sched: add support for TCQ_F_NOLOCK subqueues to sch

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Message-ID: <1471475056.29842.55.camel@edumazet-glaptop3.roam.corp.google.com>
Date:	Wed, 17 Aug 2016 16:04:16 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	John Fastabend <john.fastabend@...il.com>
Cc:	xiyou.wangcong@...il.com, jhs@...atatu.com,
	alexei.starovoitov@...il.com, brouer@...hat.com,
	john.r.fastabend@...el.com, netdev@...r.kernel.org,
	davem@...emloft.net
Subject: Re: [RFC PATCH 12/13] net: sched: add support for TCQ_F_NOLOCK
 subqueues to sch_mq

On Wed, 2016-08-17 at 12:38 -0700, John Fastabend wrote:
> The sch_mq qdisc creates a sub-qdisc per tx queue which are then
> called independently for enqueue and dequeue operations. However
> statistics are aggregated and pushed up to the "master" qdisc.
> 
> This patch adds support for any of the sub-qdiscs to be per cpu
> statistic qdiscs. To handle this case add a check when calculating
> stats and aggregate the per cpu stats if needed.
> 
> Also exports __gnet_stats_copy_queue() to use as a helper function.


Looks like this patch should be happening earlier in the series ?