linux-kernel - Re: [PATCH v3 2/2] sched: Fix sched domain build error for GNR, CWF in SNC-3 mode

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Message-ID: <11ae46c1-9a4a-4b4d-9e32-6213bb43f4f8@intel.com>
Date: Fri, 12 Sep 2025 19:59:36 +0800
From: "Chen, Yu C" <yu.c.chen@...el.com>
To: K Prateek Nayak <kprateek.nayak@....com>, Tim Chen
	<tim.c.chen@...ux.intel.com>, Peter Zijlstra <peterz@...radead.org>, "Ingo
 Molnar" <mingo@...hat.com>
CC: 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>, "Libo
 Chen" <libo.chen@...cle.com>, Abel Wu <wuyun.abel@...edance.com>, Len Brown
	<len.brown@...el.com>, <linux-kernel@...r.kernel.org>, "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 v3 2/2] sched: Fix sched domain build error for GNR, CWF
 in SNC-3 mode

On 9/12/2025 5:23 PM, K Prateek Nayak wrote:
> On 9/12/2025 11:09 AM, Chen, Yu C wrote:
>> sched_avg_remote_numa_distance is defined in topology.c with
>> CONFIG_NUMA controlled, should we make arch_sched_node_distance()
>> be controlled under CONFIG_NUMA too?
> 
> Good catch! Given node_distance() too is behind CONFIG_NUMA, I
> think we can put this behind CONFIG_NUMA too (including those
> declarations in include/linux/sched/topology.h)
> 

Exactly, only NUMA would use this function.

Thanks,
Chenyu