netdev - Re: [PATCH v2 net-next 7/7] net/sched: taprio: replace safety precautions with comments

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Date:   Tue, 20 Sep 2022 14:01:19 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Vladimir Oltean <vladimir.oltean@....com>
Cc:     netdev@...r.kernel.org,
        Vinicius Costa Gomes <vinicius.gomes@...el.com>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jiri Pirko <jiri@...nulli.us>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Voon Weifeng <weifeng.voon@...el.com>,
        Vladimir Oltean <olteanv@...il.com>,
        Kurt Kanzenbach <kurt@...utronix.de>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 net-next 7/7] net/sched: taprio: replace safety
 precautions with comments

On Thu, 15 Sep 2022 13:50:46 +0300 Vladimir Oltean wrote:
> The WARN_ON_ONCE() checks introduced in commit 13511704f8d7 ("net:
> taprio offload: enforce qdisc to netdev queue mapping") take a small
> toll on performance, but otherwise, the conditions are never expected to
> happen. Replace them with comments, such that the information is still
> conveyed to developers.

Another option is DEBUG_NET_WARN_ON_ONCE() FWIW, you probably know..