Name

trace_softirq_raise — called immediately when a softirq is raised

Synopsis

void trace_softirq_raise (struct softirq_action * h,
 struct softirq_action * vec);
 

Arguments

h

pointer to struct softirq_action

vec

pointer to first struct softirq_action in softirq_vec array

Description

The h parameter contains a pointer to the softirq vector number which is raised. vec is NULL and it means h includes vector number not softirq_action. When used in combination with the softirq_entry tracepoint we can determine the softirq raise latency.