linux-kernel - Re: [PATCH net-next v5 06/12] net: pse-pd: Add support for budget evaluation strategies

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Message-ID: <20250224141037.1c79122b@kmaincent-XPS-13-7390>
Date: Mon, 24 Feb 2025 14:10:37 +0100
From: Kory Maincent <kory.maincent@...tlin.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: Andrew Lunn <andrew@...n.ch>, Oleksij Rempel <o.rempel@...gutronix.de>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet
 <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Jonathan Corbet
 <corbet@....net>, Donald Hunter <donald.hunter@...il.com>, Rob Herring
 <robh@...nel.org>, Andrew Lunn <andrew+netdev@...n.ch>, Simon Horman
 <horms@...nel.org>, Heiner Kallweit <hkallweit1@...il.com>, Russell King
 <linux@...linux.org.uk>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor
 Dooley <conor+dt@...nel.org>, Thomas Petazzoni
 <thomas.petazzoni@...tlin.com>, netdev@...r.kernel.org,
 linux-doc@...r.kernel.org, Kyle Swenson <kyle.swenson@....tech>, Dent
 Project <dentproject@...uxfoundation.org>, kernel@...gutronix.de, Maxime
 Chevallier <maxime.chevallier@...tlin.com>, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v5 06/12] net: pse-pd: Add support for budget
 evaluation strategies

On Thu, 20 Feb 2025 16:51:29 -0800
Jakub Kicinski <kuba@...nel.org> wrote:

> On Tue, 18 Feb 2025 17:19:10 +0100 Kory Maincent wrote:
> > This patch introduces the ability to configure the PSE PI budget evaluation
> > strategies. Budget evaluation strategies is utilized by PSE controllers to
> > determine which ports to turn off first in scenarios such as power budget
> > exceedance.
> > 
> > The pis_prio_max value is used to define the maximum priority level
> > supported by the controller. Both the current priority and the maximum
> > priority are exposed to the user through the pse_ethtool_get_status call.
> > 
> > This patch add support for two mode of budget evaluation strategies.
> > 1. Static Method:  
> 
> The "methods" can be mixed for ports in a single "domain" ?

No they can't for now. Even different PSE power domains within the same PSE
controller. I will make it explicit.

Regards,
-- 
Köry Maincent, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com