linux-kernel - Re: 回复: [PATCH 01/10] tick/nohz: Prevent tick_nohz_get_sleep

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Message-ID: <YTBPR01MB32621AFB126B85EBA00FECC5C46A9@YTBPR01MB3262.CANPRD01.PROD.OUTLOOK.COM>
Date:   Wed, 17 Mar 2021 21:49:09 +0000
From:   "Zhou Ti (x2019cwm)" <x2019cwm@...x.ca>
To:     Peter Zijlstra <peterz@...radead.org>,
        "g@...ez.programming.kicks-ass.net" 
        <g@...ez.programming.kicks-ass.net>
CC:     "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Frederic Weisbecker <frederic@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>,
        Yunfeng Ye <yeyunfeng@...wei.com>,
        "Paul E . McKenney" <paulmck@...nel.org>,
        Marcelo Tosatti <mtosatti@...hat.com>,
        Ingo Molnar <mingo@...nel.org>,
        "rafael@...nel.org" <rafael@...nel.org>
Subject: Re: 回复: [PATCH 01/10] tick/nohz: Prevent tick_nohz_get_sleep_length() from returning negative value

On March 16, 2021 12:25, Peter Zijlstra wrote:
>On Tue, Mar 16, 2021 at 04:08:08PM +0000, Zhou Ti (x2019cwm) wrote:
>> But I don't think it's a good idea to handle this in callers, because
>> logically the function shouldn't return negative values. Returning 0
>> directly would allow idle governors to get another chance to select
>> again.


>A: Because it messes up the order in which people normally read text.
>Q: Why is top-posting such a bad thing?
>A: Top-posting.
>Q: What is the most annoying thing in e-mail?

Sorry about it, I am a newbie, I won't do it again.