MCF5329EVB BSP

Feng, Kate feng at bnl.gov
Fri Oct 5 17:15:49 CDT 2007


Joel Sherrill wrote:

> I wanted time to analyze the problems you were reporting and
> deal with them at a leisurely pace.  That's one of the reasons I
> went ahead and cut a 4.8 branch without adding them.

Can you describe the problems that were reported to this list
a little bit more ? Or was there a PR related to this problem ?

It's very strange.  This afternoon, while a file was being written
via NFS, it crashed in the middle of the process. I roughly traced
it down from <_Thread_Handler>
to  <taskEntry>....... This is the first time I saw this message.
However, it is the first time I had the NFS via a different network
setup, too. I did not have enough time to trace the bug further
because I thought I had introduced a new bug in my application
program without knowing.
  

Regards,
Kate
-----Original Message-----
From: rtems-users-bounces+feng1=bnl.gov at rtems.org on behalf of Till Straumann
Sent: Fri 10/5/2007 5:34 PM
To: Joel Sherrill
Cc: Kirspel, Kevin; 'rtems-users at rtems.org'
Subject: Re: MCF5329EVB BSP
 
Joel Sherrill wrote:
> Till Straumann wrote:
>> Joel Sherrill wrote:
>>> Till Straumann wrote:
>>>> Just a reminder that the filesystem framework currently is not 
>>>> thread-safe!
>>>>
>>> Your outstanding patches are in the queue for 4.9.
>> IIRC my patches don't cover making the FS framework thread-safe.
> I wanted time to analyze the problems you were reporting and
> deal with them at a leisurely pace.  That's one of the reasons I
> went ahead and cut a 4.8 branch without adding them.
>
> The other reason was that that it hasn't been a major problem
> for all these years so one more release cycle wasn't a big deal.
Sure - my concerns are that as more filesystems become available
there will be more users and more potential for problems to show.

Note that NFS is special: it it essentially stateless and therefore
insensitive to race conditions (but could still be that subtle issues
in the FS framework code could cause problems).

T.
>
> --joel
>> T
>>>
>>> --joel
>>>> T.
>>>> Joel Sherrill wrote:
>>>>> Kirspel, Kevin wrote:
>>>>>  
>>>>>> I have almost completed a port to RTEMS of the MCF5329EVB 
>>>>>> evaluation board from Freescale. With this BSP I had to port the 
>>>>>> YAFFS2 file system to RTEMS. I would like to submit the BSP and 
>>>>>> YAFFS2 port to RTEMS. The YAFFS2 license is GPL. I don't know if 
>>>>>> that is OK with RTEMS. I would like to do some robustness testing 
>>>>>> on the YAFFS2 port. Does RTEMS have a test plan/procedure to 
>>>>>> validate new file systems?
>>>>>>
>>>>>>     
>>>>> Congratulations on the BSP and port. Is the license OK on the BSP? 
>>>>> Other email
>>>>> deals with the YAFFS2 license issue.
>>>>>
>>>>> There are POSIX tests which exercise files through the C library 
>>>>> IO calls and
>>>>> should exercise all the functionality available through "normal" 
>>>>> APIs. You
>>>>> would just have to arrange to have that mounted and the paths 
>>>>> point to it.
>>>>>
>>>>> --joel
>>>>>  
>>>>>> Kevin Kirspel
>>>>>>
>>>>>> Opti Medical Systems
>>>>>>
>>>>>> Electrical Engineer
>>>>>>
>>>>>> 235 Hembree Park Drive
>>>>>>
>>>>>> Roswell GA 30076
>>>>>>
>>>>>> (ph) 770-510-4444 x4568
>>>>>>
>>>>>> (fax) 770-510-4445
>>>>>>
>>>>>> ------------------------------------------------------------------------ 
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> rtems-users mailing list
>>>>>> rtems-users at rtems.com
>>>>>> http://rtems.rtems.org/mailman/listinfo/rtems-users
>>>>>>       
>>>>>
>>>>> _______________________________________________
>>>>> rtems-users mailing list
>>>>> rtems-users at rtems.com
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>>>>>   
>>>>
>>>
>>
>


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