linux-kernel - Re: [PATCH] sched: remove unused cpumask variable in mm_cid

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Message-ID: <v3zyf7pp64yd4kakqniq4thjf2egb3kavkwzgoqt6ye5cuqkys@jmkcwst6lrn2>
Date: Tue, 14 Oct 2025 02:56:14 -0700
From: Breno Leitao <leitao@...ian.org>
To: Kriish Sharma <kriish.sharma2006@...il.com>
Cc: Ingo Molnar <mingo@...hat.com>, Peter Zijlstra <peterz@...radead.org>, 
	Juri Lelli <juri.lelli@...hat.com>, Vincent Guittot <vincent.guittot@...aro.org>, 
	Dietmar Eggemann <dietmar.eggemann@....com>, Steven Rostedt <rostedt@...dmis.org>, 
	Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>, 
	Valentin Schneider <vschneid@...hat.com>, linux-kernel@...r.kernel.org, david.hunter.linux@...il.com, 
	skhan@...uxfoundation.org
Subject: Re: [PATCH] sched: remove unused cpumask variable in mm_cid_get()

On Thu, Oct 09, 2025 at 07:48:18PM +0000, Kriish Sharma wrote:
> The variable 'cpumask' in mm_cid_get() was assigned but never used,
> causing the following build error with -Werror:
> 
> kernel/sched/sched.h: In function ‘mm_cid_get’:
> kernel/sched/sched.h:3743:25: error: variable ‘cpumask’ set but not used [-Werror=unused-but-set-variable]
>  3743 |         struct cpumask *cpumask;
>       |                         ^~~~~~~

Thanks for the fix. I am hitting the same issue in my builds.

> Removing the unused variable allows the kernel to compile without errors.
> 
> Signed-off-by: Kriish Sharma <kriish.sharma2006@...il.com>

Reviewed-by: Breno Leitao <leitao@...ian.org>