linux-kernel - Re: Utime and stime are less when getrusage (RUSAGE

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Message-ID: <OSBPR01MB2183E96914F5DDAEB293274AEBCC9@OSBPR01MB2183.jpnprd01.prod.outlook.com>
Date:   Tue, 31 Aug 2021 04:18:24 +0000
From:   "hasegawa-hitomi@...itsu.com" <hasegawa-hitomi@...itsu.com>
To:     Frederic Weisbecker <frederic@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        "'mgorman@...e.de'" <mgorman@...e.de>,
        "'mingo@...nel.org'" <mingo@...nel.org>,
        "'tglx@...utronix.de'" <tglx@...utronix.de>,
        "'juri.lelli@...hat.com'" <juri.lelli@...hat.com>,
        "'vincent.guittot@...aro.org'" <vincent.guittot@...aro.org>
CC:     "'fweisbec@...il.com'" <fweisbec@...il.com>,
        "'dietmar.eggemann@....com'" <dietmar.eggemann@....com>,
        "'rostedt@...dmis.org'" <rostedt@...dmis.org>,
        "'bsegall@...gle.com'" <bsegall@...gle.com>,
        "'bristot@...hat.com'" <bristot@...hat.com>,
        "'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>
Subject: Re: Utime and stime are less when getrusage (RUSAGE_THREAD) is
 executed on a tickless CPU.

Hi Frederic,

> > I have also confirmed that CPUs other than nohz_full have very little overhead.
> > Please consider merging it into the mainline.
> 
> Ok, I'm going to submit a proper patch.

Thank you for working on the patch.
Do you have any update?

Thanks.
Hitomi Hasegawa