centos man page for trace_softirq_entry

TRACE_SOFTIRQ_ENTRY(9)							IRQ						    TRACE_SOFTIRQ_ENTRY(9)

NAME
       trace_softirq_entry - called immediately before the softirq handler

SYNOPSIS
       void trace_softirq_entry(unsigned int vec_nr);

ARGUMENTS
       vec_nr
	   softirq vector number

DESCRIPTION
       When used in combination with the softirq_exit tracepoint we can determine the softirq handler runtine.

AUTHORS
       Jason Baron <jbaron@redhat.com>
	   Author.

       William Cohen <wcohen@redhat.com>
	   Author.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						    TRACE_SOFTIRQ_ENTRY(9)