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

NAME
probe::softirq.entry - Execution of handler for a pending softirq starting
SYNOPSIS
softirq.entry
VALUES
action
pointer to softirq handler just about to execute
vec
softirq_action vector
vec_nr
softirq vector number
h
struct softirq_action* for current pending softirq
SystemTap Tapset Reference March 2016 PROBE::SOFTIRQ.ENT(3stap)