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

NAME
probe::ioscheduler_trace.elv_issue_request - Fires when a request is
SYNOPSIS
ioscheduler_trace.elv_issue_request
VALUES
rq_flags Request flags. disk_major Disk major no of request. rq Address of request. disk_minor Disk minor number of request. name Name of the probe point elevator_name The type of I/O elevator currently enabled.
DESCRIPTION
scheduled.