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Date: Mon, 15 Apr 2019 17:25:49 +0200 From: Peter Zijlstra <peterz@...radead.org> To: "chengjian (D)" <cj.chengjian@...wei.com> Cc: huawei.libin@...wei.com, xiexiuqi@...wei.com, yangyingliang@...wei.com, mingo@...hat.com, linux-kernel@...r.kernel.org Subject: Re: [PATCH] sched/fair: Use 'unsigned long' for group_shares,group_runnable On Mon, Apr 15, 2019 at 11:20:31PM +0800, chengjian (D) wrote: > Hi, Peter > > > On 2019/4/15 20:46, Peter Zijlstra wrote: > > I write a demo about this, which I described it as overflow. I'm not saying there's no overflow, I'm saying there's nothing UB about it.
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