Tracing kernel modules

Hi,

I'm trying to trace my own kernel module, so I've created an XML  
facilities file with the events I want and used "genevent" to generate the  
necessary C code for it.  First, it seems that genevent doesn't create the  
ltt_get_index_from_facility_mymodule() function that the  
ltt-facility-mymodule.h uses.  Am I suppose to create this manually or add  
the following to the top of ltt-facility-mymodule.h:

#include <ltt/ltt-facility-select-default.h>
#define ltt_get_index_from_facility_mymodule ltt_get_index_from_facility

Second, I'd like to keep my module (and the facility loader) completely  
separate from the kernel source.  So I've got my module in a completely  
separate directory and the ltt facility loader in a subdirectory "ltt" of  
that directory.  Using the above method, I get the following errors when  
compiling my module:

WARNING: "ltt_facility_get_mymodule_29DE9FD8"  
[/home/fv/mymodule/mymodule.ko] undefined!
WARNING: "ltt_get_index_from_facility" [/home/fv/mymodule/mymodule.ko]  
undefined!

Since the facility loader is compiled as a separate module, it should wait  
until runtime to lookup those symbols.  What am I missing?  Is this the  
recommended approach for tracing modules?  Also, the QUICKSTART guide  
mentions creating a probe, but the README for genevent doesn't.  Isn't the  
README more up-to-date?

Thanks!

fv