Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Fri, 10 Sep 2021 13:35:52 +0200
From:   Michal =?iso-8859-1?Q?Koutn=FD?= <mkoutny@suse.com>
To:     Vincent Guittot <vincent.guittot@linaro.org>
Cc:     linux-kernel <linux-kernel@vger.kernel.org>,
        Phil Auld <pauld@redhat.com>, Ingo Molnar <mingo@redhat.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Juri Lelli <juri.lelli@redhat.com>,
        Dietmar Eggemann <dietmar.eggemann@arm.com>,
        Steven Rostedt <rostedt@goodmis.org>,
        Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
        Daniel Bristot de Oliveira <bristot@redhat.com>,
        Odin Ugedal <odin@uged.al>, Rik van Riel <riel@surriel.com>,
        Giovanni Gherdovich <ggherdovich@suse.cz>
Subject: Re: [RFC PATCH v2 5/5] sched/fair: Simplify ancestor enqueue loops
Message-ID: <20210910113552.GA30004@blackbody.suse.cz>
References: <20210819175034.4577-1-mkoutny@suse.com>
 <20210819175034.4577-6-mkoutny@suse.com>
 <CAKfTPtDwOGu9kkMdXDx=+mGVGq_EmF0wgLen7hYO+VEy+j6rig@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CAKfTPtDwOGu9kkMdXDx=+mGVGq_EmF0wgLen7hYO+VEy+j6rig@mail.gmail.com>
User-Agent: Mutt/1.10.1 (2018-07-13)
Precedence: bulk

On Thu, Sep 09, 2021 at 04:04:02PM +0200, Vincent Guittot <vincent.guittot@linaro.org> wrote:
> These multiple break loops have been done to make unthrottle_cfs_rq,
> throttle_cfs_rq, enqueue_task_fair and dequeue_task_fair to follow the
> same pattern 

Ah, I watched only the unthrottle_cfs_rq and enqueue_task_fair pair and
missed the consistency with the other two.

> and I don't see any good reason to break this

Isn't this a good reason
>  21 insertions(+), 36 deletions(-)
?

(The stats are with a grain of salt, I'd need to recheck how these stats
would hold if throttle_cfs_rq, dequeue_task_fair would be modified too +
they look a bit better because of the loop from 1/5.)

Michal