linux-kernel - Re: [PATCH] bonding:avoid repeated display of same link status change

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Message-ID: <65f98009-1ce0-d6fd-06dc-233aa115abc9@gmail.com>
Date:   Tue, 23 Oct 2018 09:10:44 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Mahesh Bandewar (महेश बंडेवार) <maheshb@...gle.com>,
        mk.singh@...cle.com
Cc:     linux-netdev <netdev@...r.kernel.org>,
        Jay Vosburgh <j.vosburgh@...il.com>,
        Veaceslav Falico <vfalico@...il.com>,
        Andy Gospodarek <andy@...yhouse.net>,
        "David S. Miller" <davem@...emloft.net>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] bonding:avoid repeated display of same link status change



On 10/23/2018 08:54 AM, Mahesh Bandewar (महेश बंडेवार) wrote:

> Atomic operations are expensive (on certain architectures) and miimon
> runs quite frequently. Is the added cost of these atomic operations
> even worth just to avoid *duplicate info* messages? This seems like a
> overkill!

atomic_read() is a simple read, no atomic operation involved.

Same remark for atomic_set()