linux-kernel - Re: [v3 PATCH 1/1] fs/proc: Expose mm

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Message-ID: <bzqdl7cpihvhmqpb64od36wvu6xihyy6l3ooj66d6xcmrgmyii@v6hob4ek3rct>
Date: Fri, 16 Jan 2026 10:42:24 -0500
From: Aaron Tomlin <atomlin@...mlin.com>
To: Dave Hansen <dave.hansen@...el.com>
Cc: "David Hildenbrand (Red Hat)" <david@...nel.org>, oleg@...hat.com, 
	akpm@...ux-foundation.org, gregkh@...uxfoundation.org, brauner@...nel.org, mingo@...nel.org, 
	neelx@...e.com, sean@...e.io, linux-kernel@...r.kernel.org, 
	linux-fsdevel@...r.kernel.org, Dave Hansen <dave.hansen@...ux.intel.com>, 
	Andy Lutomirski <luto@...nel.org>, Peter Zijlstra <peterz@...radead.org>, riel@...riel.com, 
	"x86@...nel.org" <x86@...nel.org>
Subject: Re: [v3 PATCH 1/1] fs/proc: Expose mm_cpumask in /proc/[pid]/status

On Thu, Jan 15, 2026 at 09:08:58PM -0800, Dave Hansen wrote:
> On 1/15/26 17:53, Aaron Tomlin wrote:
> > Would you be amenable to this exposure if it were guarded behind a specific
> > CONFIG_DEBUG option (e.g., CONFIG_DEBUG_MM_CPUMASK_INFO)?
> 
> Not really.
> 
> ABI behind a config option is still ABI.

Hi Dave,

I understand.

Kind regards,
-- 
Aaron Tomlin

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