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

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Message-ID: <YQww08x2whx/LIIT@kroah.com>
Date:   Thu, 5 Aug 2021 20:41:23 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Catalin Marinas <catalin.marinas@....com>
Cc:     Lee Jones <lee.jones@...aro.org>,
        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>,
        John Crispin <john@...ozen.org>,
        Ley Foon Tan <ley.foon.tan@...el.com>,
        Jonas Bonn <jonas@...thpole.se>,
        Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>,
        Stafford Horne <shorne@...il.com>,
        "James E . J . Bottomley" <James.Bottomley@...senpartnership.com>,
        Helge Deller <deller@....de>,
        Michael Ellerman <mpe@...erman.id.au>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Rich Felker <dalias@...c.org>,
        "David S . Miller" <davem@...emloft.net>,
        Jeff Dike <jdike@...toit.com>,
        Richard Weinberger <richard@....at>,
        Anton Ivanov <anton.ivanov@...bridgegreys.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Chris Zankel <chris@...kel.net>,
        Max Filippov <jcmvbkbc@...il.com>,
        Sebastian Reichel <sre@...nel.org>,
        linux-snps-arc@...ts.infradead.org, linux-csky@...r.kernel.org,
        uclinux-h8-devel@...ts.sourceforge.jp,
        linux-hexagon@...r.kernel.org, linux-m68k@...ts.linux-m68k.org,
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        linux-parisc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-riscv@...ts.infradead.org, linux-s390@...r.kernel.org,
        linux-sh@...r.kernel.org, sparclinux@...r.kernel.org,
        linux-um@...ts.infradead.org, linux-xtensa@...ux-xtensa.org
Subject: Re: [PATCH 1/3] arch: Export machine_restart() instances so they can
 be called from modules

On Thu, Aug 05, 2021 at 06:36:25PM +0100, Catalin Marinas wrote:
> 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.

Yes please.