Adding new option to ktrace

[Nikhil Dharashivkar]

Hi,
   i want to hack the ktrace system call. Basically, I want to monitor
scsi disk IO through dastrategy() routine.
    It seems that kern_ktrace.c implements different functions for
ktrace options like -tc / -ti ... etc (see man page). So, is it
possible to add new option for disk IO with new structure object
containing disk io information which will be pass to
ktr_submittrequest thr' ktr_request structure.
         Will data will be written correctly in ktrace.out and will
kdump analyze that ?



-- 
Thanks and Regards,
         Nikhil.