linux-kernel - Re: [PATCH v4] sched/fair: Correctly insert cfs

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Message-ID: <CAFpoUr1vta7F7PhzsTazqwrehhiySmD71veOxTo=PTBrGhpvLg@mail.gmail.com>
Date:   Mon, 7 Jun 2021 15:36:12 +0200
From:   Odin Ugedal <odin@...d.al>
To:     Vincent Guittot <vincent.guittot@...aro.org>
Cc:     Odin Ugedal <odin@...d.al>, Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        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>,
        "open list:CONTROL GROUP (CGROUP)" <cgroups@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4] sched/fair: Correctly insert cfs_rq's to list on unthrottle

> It's not the best place for this function:
> - pelt.h header file is included below but cfs_rq_is_decayed() uses PELT
> - CONFIG_SMP is already defined few lines below
> - cfs_rq_is_decayed() is only used with CONFIG_FAIR_GROUP_SCHED and
> now with CONFIG_CFS_BANDWIDTH which depends on the former
>
> so moving cfs_rq_is_decayed() just above update_tg_load_avg() with
> other functions used for propagating and updating tg load seems a
> better place

Ack. When looking at it now, your suggestion makes more sense. Will fix it.

Thanks
Odin