Sorry for my late answer. I have posted my kernel configuration on March 5. 
Please take a close look at my postings. You mave have to log in to google 
to see the attachments.



Am Mittwoch, 19. März 2014 16:06:07 UTC+1 schrieb winglion:
>
>  
> hi,quikcjack. I had been fallowing the topic for some dates.
>  
> I plan to build a CNC controler  with BBBlack.
> I want to get your kernel config to make a 
> PREEMPT/PREEMPT_RT capable kernel too.
>  
> whould you please seem me your kernel confiuration too? Thanks.
>  
>   
> ======== 2014-03-19 16:47:58 : ========
>  
>    
> It's really nice to see that there is some interest in having a 
> PREEMPT/PREEMPT_RT capable kernel for the BBB.
>
> Well, it's relatively easy to compile a kernel. If you want to develop 
> applications for the BBB you need a compiler/toolchain. So I guess you 
> might have that already. The instructions to compile a kernel are explained 
> at https://github.com/beagleboard/kernel/tree/3.8.
>
> I could send you my modified kernel configuration. You simply have the 
> replace the original kernel configuration to create the PREEMPT capable 
> kernel.
>
>
> Am Freitag, 14. März 2014 13:03:51 UTC+1 schrieb [email protected]: 
>>
>> Hi thats great!
>>
>> Is that possible to have your compiled kernel for BBB? I would avoid the 
>> compiling process.
>> Thanks a lot,
>>
>> Morteza
>>
>> Am Mittwoch, 26. Februar 2014 14:53:05 UTC+1 schrieb [email protected]: 
>>>
>>>  I have recently tested kernel 3.8.13-rt9 (
>>> https://github.com/beagleboard/kernel/tree/3.8-rt) using git://
>>> git.kernel.org/pub/scm/linux/kernel/git/clrkwllms/rt-tests.git. I am 
>>> using Ubuntu 12.04.4. The load was created using stress –cpu 1 which 
>>> generates a cpu load of about 100%. I then used cyclictest:
>>>
>>>
>>> root@ubuntu-armhf:/home/ubuntu/rt-tests# ./cyclictest -l1000000 -m -n 
>>> -t1 -p99 -i400 -q
>>>
>>> # /dev/cpu_dma_latency set to 0us
>>>
>>> T: 0 ( 770) P:99 I:400 C:1000000 Min: 14 Act: 19 Avg: 18 Max: 132
>>>
>>>
>>> uname -a reports:
>>>
>>> root@ubuntu-armhf:/home/ubuntu/rt-tests# uname -a
>>>
>>> Linux ubuntu-armhf 3.8.13-rt9-00899-g160e771 #1 SMP PREEMPT Wed Jun 19 
>>> 10:49:36 CEST 2013 armv7l armv7l armv7l GNU/Linux
>>>
>>>
>>> I am absolutely surprised that the result is looking that good.
>>>
>>>
>>>
>>> Am Freitag, 21. Februar 2014 09:20:39 UTC+1 schrieb [email protected]: 
>>>>
>>>> I am trying to figure out how to create a kernel for the BBB that 
>>>> supports PREEMPT_RT. It's kind of strange that the BBB's default kernel 
>>>> does not even have PREEMPT activated. Such a board doesn't fit to many 
>>>> embedded applications where we need at least some kind of determinism. It 
>>>> is even worse, that nobody seems to care about this problem. Contrary to 
>>>> that, the Raspberry PI's standard kernel has PREEMPT activacted from the 
>>>> very beginning.
>>>>
>>>> I have tested Robert Nelsons kernel 3.8.13-r9 (
>>>> https://github.com/beagleboard/kernel/tree/3.8-rt). It does not have 
>>>> PREEMPT_RT activated by default. When doing so, it does not boot. But 
>>>> activating PREEMPT does work. However, development of this branch has 
>>>> stopped several months ago. The official source for RT Linux (3.8.13) has 
>>>> evolved since then. Meanwhile there's an rt17 patch set (
>>>> https://www.kernel.org/pub/linux/kernel/projects/rt/3.8/). Did anybody 
>>>> give this a try? Does it work with the BBB?
>>>>
>>>>
>>>> -- 
> For more options, visit http://beagleboard.org/discuss
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> 在此邮件中未发现病毒。
> 检查工具:AVG - www.avg.com
> 版本:2013.0.3462 / 病毒数据库:3722/7208 - 发布日期:03/17/14
>
>  = = = = = = = = = = = = = = = = = = = = = = 
>
> 致
> 礼!
>  
>  winglion
>  [email protected] <javascript:>
>  2014-03-19
>  
>

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