linux-kernel - Re: [PATCH net-next 0/3] net: sched: add other statistics when calling qdisc

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Date:   Fri, 26 Aug 2022 19:40:52 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Zhengchao Shao <shaozhengchao@...wei.com>
Cc:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <davem@...emloft.net>, <edumazet@...gle.com>, <pabeni@...hat.com>,
        <jhs@...atatu.com>, <xiyou.wangcong@...il.com>, <jiri@...nulli.us>,
        <weiyongjun1@...wei.com>, <yuehaibing@...wei.com>
Subject: Re: [PATCH net-next 0/3] net: sched: add other statistics when
 calling qdisc_drop()

On Thu, 25 Aug 2022 11:29:40 +0800 Zhengchao Shao wrote:
> According to the description, "other" should be added when calling
> qdisc_drop() to discard packets.

The fact that an old copy & pasted comment says something is not 
in itself a sufficient justification to make code changes.

qdisc_drop() already counts drops, duplicating the same information 
in another place seems like a waste of CPU cycles.