linux-kernel - Re: [RFC PATCH 1/4] stop_machine: Move cpu_stop_done into stop

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Message-ID: <87bl2ytu45.mognet@arm.com>
Date:   Fri, 05 Nov 2021 17:00:58 +0000
From:   Valentin Schneider <valentin.schneider@....com>
To:     Yafang Shao <laoar.shao@...il.com>, mingo@...hat.com,
        peterz@...radead.org, juri.lelli@...hat.com,
        vincent.guittot@...aro.org, dietmar.eggemann@....com,
        rostedt@...dmis.org, bsegall@...gle.com, mgorman@...e.de,
        bristot@...hat.com
Cc:     linux-kernel@...r.kernel.org, Yafang Shao <laoar.shao@...il.com>
Subject: Re: [RFC PATCH 1/4] stop_machine: Move cpu_stop_done into stop_machine.h

On 04/11/21 14:57, Yafang Shao wrote:
> Move struct cpu_stop_done into the stop_machine.h, then it can be resued
> by the functions outside of stop_maichine.c.
>

The nr_todo & ret faff is only required for multi_stop scenarios, which
isn't your use-case. AFAICT you don't need to export this, you just need a
struct completion somewhere (and maybe a ret, but I'm not even sure about
that).