[Xenomai] [PATCH] IPIPE patch for BCM2709/RPI2 (version #5)

Mathieu Rondonneau mathieu_rondonneau at hotmail.com
Sat Dec 5 23:34:46 CET 2015


On 15-12-04 07:42 PM, Joe Lee wrote:
> Hi Mathieu,
> I apply the patch by Xenomai latest stable v3.0.1 to my RPI2, and
> sometimes the booting hang like this:
>  * Starting configure network device security[ OK ]
>  * Stopping load modules from /etc/modules[ OK ]
>  * Stopping userspace bootsplash[ OK ]
> 
> That's low probability, about 1 of 60 times booting, and the original
> not patched kernel is OK.
> The kernel is the latest version from
> https://github.com/raspberrypi/linux/tree/rpi-3.18.y .
> First, I apply the ipipe patch "ipipe-core-3.18.20-arm-6.patch" from
> https://xenomai.org/downloads/ipipe/v3.x/arm/ . Then I apply your RPI
> patch version #5. The kernel is build follow this instruction
> https://www.raspberrypi.org/documentation/linux/kernel/building.md .
> The root file system is Ubuntu 14.04 LTS for RPI2, which from
> https://wiki.ubuntu.com/ARM/RaspberryPi .
> Attached is the kernel booting hang log file and kernel config file.
> What can I do to get more infomation for debugging when kernel booting hang?
> Look forward to your reply.
> 
Hi Joe,

The only difference with your .config file is that I have earlyprintk
enabled but that should not cause the issue you are observing.

I am using the raspbian rootfs downloaded from the raspberry pi
foundation website:
https://www.raspberrypi.org/downloads/raspbian/

can you try disabling xenomai from the kernel config to see if the
problem happens also when only the IPIPE patch is turned ON?

Thanks,
-Mathieu



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