Re: Kernel thread scheduling

2015-04-12 Thread nick


On April 12, 2015 1:06:57 AM EDT, Ruben Safir  wrote:
>On 04/12/2015 12:36 AM, Mohammed Ghriga wrote:
>> In addition to the suggestions that were offered, I recommend you try
>reading Chapter 16:
>https://www.google.com/search?tbo=p&tbm=bks&q=isbn:0596554672 (pages:
>267-272). 
>> 
>
>http://it-ebooks.info/book/481/
>
>FWIW I found this lovely wait example in the other kernel text under
>the
>scheduling section
>
>Sleeping and Waking Up page 58 in Robert Love, Linux Kernel Development
>
>http://www.it-ebooks.info/book/819/
>
I recommended this book as that was how I learn the basics of kernel 
development.  Again if your interested in certain areas I will be glad to 
link/explain it to you to the best of my knowledge. 
Nick
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Re: Problem with SPI RTC DS3234 on RaspberryPi 2

2015-04-12 Thread John Whitmore
On Sat, Apr 11, 2015 at 09:50:25AM -0700, Henry Hallam wrote:
> On Sat, Apr 11, 2015 at 6:25 AM, John Whitmore  wrote:
> > Original RPi kenel - 3.15.5
> > RPi-2 kernel   - 3.18.8
> 
> Maybe try the new kernel version on the old board, to eliminate that variable?
> 
> Henry

I've never been able to boot the 3.18.8 kernel in the RPi (original) it hangs
in the boot. It don't seem to be as simple as taking the 3.15.5 config file
and "make oldconfig". Whilst that does build a kernel which attempts to boot
it hangs during the boot process. 

Possibly due to the change to device trees. Can't seem to find anything on
3.18.8 for original RPi

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