linux-kernel - Re: Setting reboot type at run time for ARM

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Message-ID: <5508CBD0.5060508@gmail.com>
Date:	Tue, 17 Mar 2015 17:50:24 -0700
From:	Florian Fainelli <f.fainelli@...il.com>
To:	Arun Ramamurthy <arun.ramamurthy@...adcom.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-arm-kernel@...ts.infradead.org
CC:	Russell King <linux@....linux.org.uk>,
	Arnd Bergmann <arnd@...db.de>,
	Scott Branden <sbranden@...adcom.com>,
	Ray Jui <rjui@...adcom.com>,
	Jonathan Richardson <jonathar@...adcom.com>,
	"bcm-kernel-feedback-list@...adcom.com" 
	<bcm-kernel-feedback-list@...adcom.com>,
	Olof Johansson <olof@...om.net>,
	Anatol Pomazau <anatol@...gle.com>,
	Dmitry Torokhov <dtor@...gle.com>
Subject: Re: Setting reboot type at run time for ARM

On 17/03/15 14:44, Arun Ramamurthy wrote:
> Hello
> 
> I would like to specify a reset type just before issuing the reboot
> command in the kernel. I know the kernel command line parameter can be
> set as "reboot=w" to indicate warm reset but I want to be able to decide
> this at run time before issuing a reboot command. What would be the best
> way to implement this? Modify the reboot command
> to accept a parameter or is there a standard hook I can use?

If you use the reboot(2) system call you can already specify a large
number of options, for options that are currently not supported by
coreutils' reboot or busybox's reboot, you could probably provide a
shell script wrapper which calls into either your own reboot
implementation or the regular one, would that work?
-- 
Florian
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