[Xenomai-help] Questions porting existing rtai-24.1.12 app to xenomai

[Randy Smith <rsmith@domain.hid>]

Hello list,

I'm confused and I hope someone can illuminate a path to enlightenment.  
Please be gentle. :-)

I have inherited some linux 2.4.25 kernel module code for a powerpc that 
uses rtai-24.1.12.  In my xenomai enabled kernel, I have disabled native 
support and enabled the RTAI emulator.  This works as far as I know.  I 
can insmod it at least but to test it, I need some user mode code and 
that is where I am running into problems.

The kernel module runs as a periodic task and uses kernel mode shared 
memory to communicate with the user mode application.  The user mode 
application uses rtai_malloc to allocate the shared memory that the 
kernel module created with rtai_kmalloc.  My application fails to link 
since librtai.so cannot resolve the call to rtai_malloc.  What should I 
migrate the rtai_malloc call to in order to use the rtai skin with xenomai??

Can I not communicate kernel to user via shared memory in that skin?

I get the feeling that this is an old api that xenomai doesn't support, 
is this the case?

Any help would be appreciated.

Thanks,

-Randy Smith
Software Engineer
ImageMap, Inc.