Kprobe based probe to indicate that a request was added to the request queue
ioscheduler.elv_add_request.kp
rq
Address of the request
disk_major
Disk major number of the request
name
Name of the probe point
elevator_name
The type of I/O elevator currently enabled
rq_flags
Request flags
disk_minor
Disk minor number of the request
q
pointer to request queue