netdev - Re: [PATCH net v2] net: stmmac: protect updates of 64-bit statistics counters

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Message-ID: <cd9ce78c-2761-4b87-af87-ed6ccb1206bb@lunn.ch>
Date: Tue, 30 Jan 2024 14:48:20 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Jisheng Zhang <jszhang@...nel.org>
Cc: Petr Tesarik <petr@...arici.cz>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Jose Abreu <joabreu@...opsys.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Chen-Yu Tsai <wens@...e.org>,
	Jernej Skrabec <jernej.skrabec@...il.com>,
	Samuel Holland <samuel@...lland.org>,
	"open list:STMMAC ETHERNET DRIVER" <netdev@...r.kernel.org>,
	"moderated list:ARM/STM32 ARCHITECTURE" <linux-stm32@...md-mailman.stormreply.com>,
	"moderated list:ARM/STM32 ARCHITECTURE" <linux-arm-kernel@...ts.infradead.org>,
	open list <linux-kernel@...r.kernel.org>,
	"open list:ARM/Allwinner sunXi SoC support" <linux-sunxi@...ts.linux.dev>,
	Marc Haber <mh+netdev@...schlus.de>,
	Florian Fainelli <f.fainelli@...il.com>, stable@...r.kernel.org
Subject: Re: [PATCH net v2] net: stmmac: protect updates of 64-bit statistics
 counters

> PS: when I sent the above "net: stmmac: use per-queue 64 bit statistics
> where necessary", I had an impression: there are too much statistics in
> stmmac driver, I didn't see so many statistics in other eth drivers, is
> it possible to remove some useless or not that useful statistic members?

These counters might be considered ABI. We don't want to cause
regressions in somebodies testing, or even billing scripts because we
remove a counter which somebody is using.

       Andrew