linux-kernel - Re: [PATCH v3] sched/numa: Fix divide by zero for sysctl_numa_balancing_scan

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Date:   Thu, 6 Apr 2023 14:56:52 +0800
From:   Chen Yu <yu.c.chen@...el.com>
To:     chris hyser <chris.hyser@...cle.com>
CC:     <linux-kernel@...r.kernel.org>, <dietmar.eggemann@....com>,
        <peterz@...radead.org>, <vincent.guittot@...aro.org>
Subject: Re: [PATCH v3] sched/numa: Fix divide by zero for
 sysctl_numa_balancing_scan_size.

On 2023-04-04 at 14:29:15 -0400, chris hyser wrote:
> Commit 6419265899d9 ("sched/fair: Fix division by zero
> sysctl_numa_balancing_scan_size") prevented a divide by zero by using
> sysctl mechanisms to return EINVAL for a sysctl_numa_balancing_scan_size
> value of zero. When moved from a sysctl to a debugfs file, this checking
> was lost.
> 
> This patch puts zero checking back in place.
> 
Maybe add a tag
Fixes: 8a99b6833c88 ("sched: Move SCHED_DEBUG sysctl to debugfs")
> Signed-off-by: Chris Hyser <chris.hyser@...cle.com>

Other than that,
Tested-by: Chen Yu <yu.c.chen@...el.com>

thanks,
Chenyu