linux-kernel - Re: [PATCH 1/3] arch: Export machine_restart() instances so they can be called from modules

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Message-ID: <20210805173625.GH6719@arm.com>
Date:   Thu, 5 Aug 2021 18:36:25 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Vineet Gupta <vgupta@...opsys.com>,
        Will Deacon <will@...nel.org>, Guo Ren <guoren@...nel.org>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Brian Cain <bcain@...eaurora.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Michal Simek <monstr@...str.eu>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
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        Ley Foon Tan <ley.foon.tan@...el.com>,
        Jonas Bonn <jonas@...thpole.se>,
        Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>,
        Stafford Horne <shorne@...il.com>,
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Subject: Re: [PATCH 1/3] arch: Export machine_restart() instances so they can
 be called from modules

On Thu, Aug 05, 2021 at 08:50:30AM +0100, Lee Jones wrote:
> diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
> index b4bb67f17a2ca..cf89ce91d7145 100644
> --- a/arch/arm64/kernel/process.c
> +++ b/arch/arm64/kernel/process.c
> @@ -212,6 +212,7 @@ void machine_restart(char *cmd)
>  	printk("Reboot failed -- System halted\n");
>  	while (1);
>  }
> +EXPORT_SYMBOL(machine_restart);

Should we make this EXPORT_SYMBOL_GPL? I suppose it's not for general
use by out of tree drivers and it matches the other pm_power_off symbol
we export in this file.

Either way:

Acked-by: Catalin Marinas <catalin.marinas@....com>