linux-kernel - Re: [PATCH 1/2][v2] sched: Make newidle

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Message-ID: <jhjzhb6kq7q.mognet@arm.com>
Date:   Mon, 20 Apr 2020 18:43:37 +0100
From:   Valentin Schneider <valentin.schneider@....com>
To:     Chen Yu <yu.c.chen@...el.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Juri Lelli <juri.lelli@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2][v2] sched: Make newidle_balance() static again


On 20/04/20 16:01, Chen Yu wrote:
> After Commit 6e2df0581f56 ("sched: Fix pick_next_task() vs 'change'
> pattern race"), there is no need to expose newidle_balance() as it
> is only used within fair.c file. Change this function back to static again.
>
> No functional change.
>

That derelict 'idle_balance()' is a funny one.

Reviewed-by: Valentin Schneider <valentin.schneider@....com>

> Suggested-by: Peter Zijlstra <peterz@...radead.org>
> Reported-by: kbuild test robot <lkp@...el.com>
> Signed-off-by: Chen Yu <yu.c.chen@...el.com>
> ---
> v2: Rename the remaining idle_balance() to newidle_balance()
>     to fix an compile error when CONFIG_SMP is not set.