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

NAME
probe::staprun.send_control_message - Sending a control message
SYNOPSIS
staprun.send_control_message
VALUES
type
type of message being send; defined in runtime/transport/transport_msgs.h
len
the length (in bytes) of the data blob
data
a ptr to a binary blob of data sent as the control message
DESCRIPTION
Fires at the beginning of the send_request function.
SystemTap Tapset Reference March 2016 PROBE::STAPRUN.SEN(3stap)