linux-kernel - Re: Sysfs one-value-per-file (was Re: [PATCH] vmstat: don't auto expand the sysfs files)

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Date: Wed, 27 Dec 2023 10:42:44 -0800
From: Andrew Morton <akpm@...ux-foundation.org>
To: David Rientjes <rientjes@...gle.com>
Cc: Pasha Tatashin <pasha.tatashin@...een.com>, Linus Torvalds
 <torvalds@...ux-foundation.org>, Greg Kroah-Hartman
 <gregkh@...uxfoundation.org>, rafael@...nel.org, surenb@...gle.com,
 linux-kernel@...r.kernel.org, linux-mm@...ck.org, souravpanda@...gle.com
Subject: Re: Sysfs one-value-per-file (was Re: [PATCH] vmstat: don't auto
 expand the sysfs files)

On Tue, 26 Dec 2023 16:53:31 -0800 (PST) David Rientjes <rientjes@...gle.com> wrote:

> But for existing files and conventions, I think we should settle it as 
> "keep doing what you've been doing for 13+ years" and don't force this 
> argument every time a kernel developer wants to just add one more stat.

Absolutely.  Let's do what makes most sense.  For new things, one value
per file.  For stats which logically group with other existing stats,
do whatever the existing other stats are currently doing.