* Setting reboot type at run time for ARM
@ 2015-03-17 21:44 Arun Ramamurthy
2015-03-18 0:50 ` Florian Fainelli
0 siblings, 1 reply; 3+ messages in thread
From: Arun Ramamurthy @ 2015-03-17 21:44 UTC (permalink / raw)
To: Linux Kernel Mailing List, linux-arm-kernel
Cc: Dmitry Torokhov, Anatol Pomazau,
bcm-kernel-feedback-list@broadcom.com, Ray Jui, Scott Branden,
Jonathan Richardson, Arnd Bergmann, Russell King, Olof Johansson
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?
Arun Ramamurthy
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Setting reboot type at run time for ARM
2015-03-17 21:44 Setting reboot type at run time for ARM Arun Ramamurthy
@ 2015-03-18 0:50 ` Florian Fainelli
2015-03-18 20:58 ` Arun Ramamurthy
0 siblings, 1 reply; 3+ messages in thread
From: Florian Fainelli @ 2015-03-18 0:50 UTC (permalink / raw)
To: Arun Ramamurthy, Linux Kernel Mailing List, linux-arm-kernel
Cc: Russell King, Arnd Bergmann, Scott Branden, Ray Jui,
Jonathan Richardson, bcm-kernel-feedback-list@broadcom.com,
Olof Johansson, Anatol Pomazau, Dmitry Torokhov
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
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Setting reboot type at run time for ARM
2015-03-18 0:50 ` Florian Fainelli
@ 2015-03-18 20:58 ` Arun Ramamurthy
0 siblings, 0 replies; 3+ messages in thread
From: Arun Ramamurthy @ 2015-03-18 20:58 UTC (permalink / raw)
To: Florian Fainelli, Linux Kernel Mailing List, linux-arm-kernel
Cc: Russell King, Arnd Bergmann, Scott Branden, Ray Jui,
Jonathan Richardson, bcm-kernel-feedback-list@broadcom.com,
Olof Johansson, Anatol Pomazau, Dmitry Torokhov
On 15-03-17 05:50 PM, Florian Fainelli wrote:
> 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?
>
Thanks Florian. After looking at the sys call documentation, i can see
that it passes an argument to the kernel_restart function if I use
LINUX_REBOOT_CMD_RESTART2 as the cmd. However as you mentioned the
coreutils reboot or busybox's reboot do not support these options so I
will write a shell script to wrap the system call.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2015-03-18 20:58 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2015-03-17 21:44 Setting reboot type at run time for ARM Arun Ramamurthy
2015-03-18 0:50 ` Florian Fainelli
2015-03-18 20:58 ` Arun Ramamurthy
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox