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

NAME
probe::signal.send_sig_queue - Queuing a signal to a process
SYNOPSIS
signal.send_sig_queue
VALUES
sigqueue_addr
The address of the signal queue
name
Name of the probe point
sig
The queued signal
pid_name
Name of the process to which the signal is queued
sig_pid
The PID of the process to which the signal is queued
sig_name
A string representation of the signal
SystemTap Tapset Reference March 2016 PROBE::SIGNAL.SEND(3stap)