From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-fsdevel-owner@vger.kernel.org>
Received: from mout.gmx.net ([212.227.15.19]:50929 "EHLO mout.gmx.net"
        rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S1751855AbdIBHQS (ORCPT <rfc822;linux-fsdevel@vger.kernel.org>);
        Sat, 2 Sep 2017 03:16:18 -0400
Message-ID: <1504336232.16793.15.camel@gmx.de>
Subject: Re: [PATCH v2] sched: check user input value of
 sysctl_sched_time_avg
From: Mike Galbraith <efault@gmx.de>
To: Ethan Zhao <ethan.zhao@oracle.com>, peterz@infradead.org,
        mingo@redhat.com, mcgrof@kernel.org, keescook@chromium.org
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        james.puthukattukaran@oracle.com, ethan.kernel@gmail.com
Date: Sat, 02 Sep 2017 09:10:32 +0200
In-Reply-To: <1504335452-31806-1-git-send-email-ethan.zhao@oracle.com>
References: <1504335452-31806-1-git-send-email-ethan.zhao@oracle.com>
Content-Type: text/plain; charset="UTF-8"
Mime-Version: 1.0
Content-Transfer-Encoding: 7bit
Sender: linux-fsdevel-owner@vger.kernel.org
List-ID: <linux-fsdevel.vger.kernel.org>

On Sat, 2017-09-02 at 14:57 +0800, Ethan Zhao wrote:
> System will hang if user set sysctl_sched_time_avg to 0 by
> 
> [root@XXX ~]# sysctl kernel.sched_time_avg_ms=0

What's wrong with using proc_dointvec_minmax?

	-Mike