DTrace SDT probes in kernel module — how to?

[Lev Serebryakov]

Hello Freebsd-hackers,

   What should I do to add SDT probes into kernel module. I've tried to add simple

DTRACE_PROBE1(module__name, type, value);

  to source code. No errors, no probes after module load. I've added WITH_CTF=1 to make
 command line. Warnings from ctfmerge, no probes after module load.

  What is proper way to add SDT probes to module and how should I build it?

-- 
Best regards,
 Lev                          mailto:lev at FreeBSD.org