TRACE_FLAG_SOFTIRQ
#define __event_in_softirq() (__entry->ent.flags & TRACE_FLAG_SOFTIRQ)
#define __event_in_irq() (__entry->ent.flags & (TRACE_FLAG_HARDIRQ | TRACE_FLAG_SOFTIRQ))
if (entry->flags & TRACE_FLAG_SOFTIRQ)
trace_flags |= TRACE_FLAG_SOFTIRQ;
softirq = entry->flags & TRACE_FLAG_SOFTIRQ;
if ((flags & TRACE_FLAG_HARDIRQ) || (flags & TRACE_FLAG_SOFTIRQ))