netdev - Re: [PATCH net-next v2 13/14] net: ethernet: qualcomm: Add PPE debugfs support for PPE counters

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Message-ID: <f47e5292-667e-4662-8cc2-5167da538ad4@lunn.ch>
Date: Wed, 8 Jan 2025 17:43:00 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Luo Jie <quic_luoj@...cinc.com>
Cc: Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Lei Wei <quic_leiwei@...cinc.com>,
	Suruchi Agarwal <quic_suruchia@...cinc.com>,
	Pavithra R <quic_pavir@...cinc.com>,
	Simon Horman <horms@...nel.org>, Jonathan Corbet <corbet@....net>,
	Kees Cook <kees@...nel.org>,
	"Gustavo A. R. Silva" <gustavoars@...nel.org>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	linux-arm-msm@...r.kernel.org, netdev@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org, linux-hardening@...r.kernel.org,
	quic_kkumarcs@...cinc.com, quic_linchen@...cinc.com,
	srinivas.kandagatla@...aro.org, bartosz.golaszewski@...aro.org,
	john@...ozen.org
Subject: Re: [PATCH net-next v2 13/14] net: ethernet: qualcomm: Add PPE
 debugfs support for PPE counters

On Wed, Jan 08, 2025 at 09:47:20PM +0800, Luo Jie wrote:
> The PPE hardware packet counters are made available through
> the debugfs entry "/sys/kernel/debug/ppe/packet_counters".

Why?

Would it not be better to make them available via ethtool -S ?

You should justify not using standard statistics APIs for what look
like statistic counters. Maybe these don't fit the existing API, and
if so, you should explain why.

	Andrew