[Xenomai] [BUILDROOT] Xeno-test don’t work : Xenomai: /dev/rtheap is missing

[thierry.xenomai43 at yahoo.com]

  Hello,
I build Embeded linux for Paspberry Pi 3 with Buildroot-2016.11.2 suite. I tested Linux part and all is ok.Now I would like to use Xenomai 2.6.4 in my project.
In menuconfig, on "package>Real-Time" , I selected :    
   
   - Xenomai Userspace;
   
   - Install testsuite
   
   - Native skin lib
   
   - POSIX lib

   
I not used patch during the build.
When I want use ‘xeno-test" on my target, I have this echo :" Started child 152: /bin sh /usr/bin/xeno-test-run-wrapper /usr/bin/xeno-test /usrbin/xeno-test-run-wrapper: /usr/bin/xeno-test: line 43: can’t creat /proc/xenomai/latency: nonexistent directory+ echo 0+ :+ /usr/bin/arithXenomai: /dev/rtheap is missing(chardev, major=10 minor=254)"I see on web that I need to use I-pipe patch. Where can I found this patch for Raspbery3, and Xenomai 2.6.4 ?
Best regards,Thierry.