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To:     Frederic Weisbecker <frederic@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        "'mgorman@suse.de'" <mgorman@suse.de>,
        "'mingo@kernel.org'" <mingo@kernel.org>,
        "'tglx@linutronix.de'" <tglx@linutronix.de>,
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        "'vincent.guittot@linaro.org'" <vincent.guittot@linaro.org>
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        "'dietmar.eggemann@arm.com'" <dietmar.eggemann@arm.com>,
        "'rostedt@goodmis.org'" <rostedt@goodmis.org>,
        "'bsegall@google.com'" <bsegall@google.com>,
        "'bristot@redhat.com'" <bristot@redhat.com>,
        "'linux-kernel@vger.kernel.org'" <linux-kernel@vger.kernel.org>
Subject: Re: Utime and stime are less when getrusage (RUSAGE_THREAD) is
 executed on a tickless CPU.
Thread-Topic: Utime and stime are less when getrusage (RUSAGE_THREAD) is
 executed on a tickless CPU.
Thread-Index: AddG3PD5Dm9CD2RNQ7+TrQrb7bYc8AE2IspgAAJjxoAAIq+F+AARwywABYd9iwABIB9liwEkfn4K
Date:   Mon, 28 Jun 2021 02:36:27 +0000
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Hi Frederic, Peter, and Mel=0A=
=0A=
> I tested this and confirmed that it gives accurate values.=0A=
> Also, task_sched_runtime () is done only on nohz_full CPU, so I think=0A=
> it's a better idea than before.=0A=
> I hope you will incorporate this fix into your mainline.=0A=
=0A=
I have also confirmed that CPUs other than nohz_full have very little overh=
ead.=0A=
Please consider merging it into the mainline.=0A=
=0A=
Thanks.=0A=
Hitomi Hasegawa=