Provided by: systemtap-doc_3.1-3ubuntu0.1_all 

NAME
probe::ioscheduler_trace.unplug_timer - Fires when unplug timer associated
SYNOPSIS
ioscheduler_trace.unplug_timer
VALUES
rq_queue
request queue
name
Name of the probe point
DESCRIPTION
with a request queue expires.
SEE ALSO
tapset::ioscheduler(3stap)
SystemTap Tapset Reference March 2016 PROBE::IOSCHEDULER_T(3stap)