linux-kernel - Re: [PATCH 0/7 v4] move update blocked load outside newidle

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Message-ID: <YDaYHglbHOrCb1Ph@hirez.programming.kicks-ass.net>
Date:   Wed, 24 Feb 2021 19:17:02 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Vincent Guittot <vincent.guittot@...aro.org>
Cc:     Ingo Molnar <mingo@...hat.com>, Juri Lelli <juri.lelli@...hat.com>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Joel Fernandes <joel@...lfernandes.org>,
        Valentin Schneider <valentin.schneider@....com>,
        Frederic Weisbecker <fweisbec@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Qais Yousef <qais.yousef@....com>
Subject: Re: [PATCH 0/7 v4] move update blocked load outside newidle_balance

On Wed, Feb 24, 2021 at 06:51:01PM +0100, Vincent Guittot wrote:

> > OK, shall I add something like:
> >
> > This reduces the IRQ latency from O(nr_cgroups * nr_nohz_cpus) to
> > O(nr_cgroups).
> >
> > To the changelog of patch #1 ?
> 
> Yes, good point. This will clarify the range of improvement

OK, done.