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