Provided by: systemtap-doc_2.3-1ubuntu1.4_all 

NAME
probe::ioscheduler.elv_add_request - probe to indicate request is added to the request queue.
SYNOPSIS
ioscheduler.elv_add_request
VALUES
q Pointer to request queue. disk_minor Disk minor number of request. elevator_name The type of I/O elevator currently enabled. rq_flags Request flags. disk_major Disk major no of request. rq Address of request.