1. 根目录:
2. arch
3. m32r
4. include
5. asm
6. hardirq.h

#ifdef __KERNEL__
#ifndef __ASM_HARDIRQ_H
#define __ASM_HARDIRQ_H

#include <asm/irq.h>
#include <asm-generic/hardirq.h>

#endif /* __ASM_HARDIRQ_H */
#endif /* __KERNEL__ */