linux-kernel - Re: [PATCH 6.18 2/2] sched/topology: Fix sched domain build error for GNR, CWF in SNC-3 mode

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Message-ID: <f391338d-49bd-4383-a8cd-0dd8073da764@amd.com>
Date: Mon, 9 Feb 2026 09:29:05 +0530
From: K Prateek Nayak <kprateek.nayak@....com>
To: Greg KH <gregkh@...uxfoundation.org>, Tim Chen
	<tim.c.chen@...ux.intel.com>
CC: <stable@...r.kernel.org>, Peter Zijlstra <peterz@...radead.org>, "Ingo
 Molnar" <mingo@...nel.org>, Juri Lelli <juri.lelli@...hat.com>, "Dietmar
 Eggemann" <dietmar.eggemann@....com>, Ben Segall <bsegall@...gle.com>, "Mel
 Gorman" <mgorman@...e.de>, Valentin Schneider <vschneid@...hat.com>, Tim Chen
	<tim.c.chen@...el.com>, Vincent Guittot <vincent.guittot@...aro.org>, "Len
 Brown" <len.brown@...el.com>, <linux-kernel@...r.kernel.org>, Chen Yu
	<yu.c.chen@...el.com>, "Gautham R . Shenoy" <gautham.shenoy@....com>, "Zhao
 Liu" <zhao1.liu@...el.com>, Vinicius Costa Gomes <vinicius.gomes@...el.com>,
	Arjan Van De Ven <arjan.van.de.ven@...el.com>
Subject: Re: [PATCH 6.18 2/2] sched/topology: Fix sched domain build error for
 GNR, CWF in SNC-3 mode

Hello Greg,

On 2/7/2026 8:59 PM, Greg KH wrote:
> This breaks the build:
>   CC      arch/x86/kernel/smpboot.o
> arch/x86/kernel/smpboot.c:548:5: error: no previous prototype for ‘arch_sched_node_distance’ [-Werror=missing-prototypes]
>   548 | int arch_sched_node_distance(int from, int to)
>       |     ^~~~~~~~~~~~~~~~~~~~~~~~
> cc1: all warnings being treated as errors
> 
> How was it tested?

I believe this build issue was fixed by upstream commit 73cbcfe255f7
("sched/topology,x86: Fix build warning")

(Full upstream SHA: 73cbcfe255f7edca915d978a7d1b0a11f2d62812)

P.S. It cherry-picks cleanly on top of "Linux 6.18.9".

-- 
Thanks and Regards,
Prateek