linux-kernel - Re: [PATCH v2 2/2] sched/fair: Simplify util

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Message-ID: <20231202233812.cq2nodia3estdexy@airbuntu>
Date:   Sat, 2 Dec 2023 23:38:12 +0000
From:   Qais Yousef <qyousef@...alina.io>
To:     Vincent Guittot <vincent.guittot@...aro.org>
Cc:     mingo@...hat.com, peterz@...radead.org, juri.lelli@...hat.com,
        dietmar.eggemann@....com, rostedt@...dmis.org, bsegall@...gle.com,
        mgorman@...e.de, bristot@...hat.com, vschneid@...hat.com,
        corbet@....net, alexs@...nel.org, siyanteng@...ngson.cn,
        linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
        lukasz.luba@....com, hongyan.xia2@....com, yizhou.tang@...pee.com
Subject: Re: [PATCH v2 2/2] sched/fair: Simplify util_est

On 12/01/23 17:16, Vincent Guittot wrote:

>  /*
>   * The load/runnable/util_avg accumulates an infinite geometric series
>   * (see __update_load_avg_cfs_rq() in kernel/sched/pelt.c).
> @@ -505,9 +469,20 @@ struct sched_avg {
>  	unsigned long			load_avg;
>  	unsigned long			runnable_avg;
>  	unsigned long			util_avg;
> -	struct util_est			util_est;
> +	unsigned int			util_est;
>  } ____cacheline_aligned;

unsigned long would be better?