Hi John,

On 05/02/2012 04:56 AM, John Morris wrote:
> Hi Abel and Charles,
> 
> On 05/01/2012 07:34 AM, Charles Steinkuehler wrote:
>>> I just saw that you have resurrected the rt-preempt patches.
>>> Very very cool!
> 
> Yes, very cool!  I feared nobody would be interested, since the patches 
> have languished so long, but there's been quite a lot of interest, and 
> best of all help.  ;)

I still need it for my research, so I like to help where I can.
But finding enough spare time is currently a challenge for me.

> 
>>> I'd like to reproduce your results and help bug-fixing, but I'm not
>>> exactly sure how to patch everything together.
> 
> I went ahead and produced a new patch against HEAD, since it's about 
> that time.
> 
> The merge of the bitmuster patch with HEAD produces a lot of cruft, 
> cleaned up in this patch.  The bitmuster changes to all the .gitignore 
> files are reverted back to those from the master branch. 

Sorry about that, I was a newbee at that time and needed to see what's
happening.

> The 
> linuxcnc-bitops-fix.patch is included.  Charles's rtapi message patch 
> isn't included, since I'm still trying to figure out what the original 
> problem was; you'll need it out to see linuxcnc HEAD running on 
> preempt-rt (woo hoo!).

> www.zultron.com/static/2012/05/linuxcnc_rt_shm_20120501_cleaned.patch.gz

Fine, thanks

I've also patched and pushed this patch into a separate branch. Although
I'm not completely through in comparing the changes :)

> 
>> I have also been trying to keep build notes updated on the wiki, which
>> may be helpful:
>>
>>> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Debian_Wheezy_Linux-Rt_Compile_LinuxCNC

I like it :), maybe we can add more stuff from the bitmuster-web page,
especially about latency testing and debugging.

I can debug my other real-time programs graphically with eclipse, maybe
I can can also get it running with rtapi_app. (Of course, real-time is
over when you hit a break-point :)

> 
> Then follow these instructions.  In step 2.2, apply the patch linked 
> above; then Charles's default_rtapi_msg_handler patch.  (Skip step 2.3)
> 
> Only other modifications to the instructions, since we're now working 
> with HEAD, be sure to s/emc/linuxcnc/g.
> 
>       John

Regards,

Michael

> 
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-- 
--------------------------------------------------------------
Dipl.-Ing. Michael Abel

Graduate School of advanced Manufacturing Engineering
GSaME - Universität Stuttgart

Institut für Steuerungstechnik
der Werkzeugmaschinen und Fertigungseinrichtungen
ISW - Universität Stuttgart

Seidenstr. 36
70174 Stuttgart

Tel.: ++49 (0) 711 685-82532
Fax : ++49 (0) 711 685-82808

michael.a...@isw.uni-stuttgart.de
michael.a...@gsame.uni-stuttgart.de

www.gsame.uni-stuttgart.de
www.isw.uni-stuttgart.de
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Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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