linux-kernel - Re: [PATCH v3 0/3] nvme: Add sysfs interface for APST configuration management

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Message-ID: <20250403042504.GB22360@lst.de>
Date: Thu, 3 Apr 2025 06:25:04 +0200
From: Christoph Hellwig <hch@....de>
To: Yaxiong Tian <iambestgod@...com>
Cc: kbusch@...nel.org, axboe@...nel.dk, hch@....de, sagi@...mberg.me,
	chaitanyak@...dia.com, linux-nvme@...ts.infradead.org,
	linux-kernel@...r.kernel.org, Yaxiong Tian <tianyaxiong@...inos.cn>
Subject: Re: [PATCH v3 0/3] nvme: Add sysfs interface for APST
 configuration management

On Tue, Apr 01, 2025 at 05:22:06PM +0800, Yaxiong Tian wrote:
> From: Yaxiong Tian <tianyaxiong@...inos.cn>
> 
> This series enhances NVMe APST (Autonomous Power State Transition) support by:
> 1. Adding warnings for PST table allocation failures

That looks fine.

> 2. Exposing APST tables via sysfs for runtime inspection
> 3. Providing per-controller sysfs interface for APST configuration

Who is going to use this and how?  We'll need proper tools for that,
and in general I'd prefer to have a common set of policies for APST
configurations and not random people coming up with lots of random
policies.