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

NAME
probe::signal.do_action - Examining or changing a signal action
SYNOPSIS
signal.do_action
VALUES
oldsigact_addr
The address of the old sigaction struct associated with the signal
sig_name
A string representation of the signal
sa_mask
The new mask of the signal
sigact_addr
The address of the new sigaction struct associated with the signal
sa_handler
The new handler of the signal
name
Name of the probe point
sig
The signal to be examined/changed
SystemTap Tapset Reference March 2016 PROBE::SIGNAL.DO_A(3stap)