1. 根目录:
2. arch
3. s390
4. include
5. asm
6. delay.h

/*
 *  include/asm-s390/delay.h
 *
 *  S390 version
 *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
 *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
 *
 *  Derived from "include/asm-i386/delay.h"
 *    Copyright (C) 1993 Linus Torvalds
 *
 *  Delay routines calling functions in arch/s390/lib/delay.c
 */
 
#ifndef _S390_DELAY_H
#define _S390_DELAY_H

extern void __udelay(unsigned long long usecs);
extern void udelay_simple(unsigned long long usecs);
extern void __delay(unsigned long loops);

#define udelay(n) __udelay((unsigned long long) (n))
#define mdelay(n) __udelay((unsigned long long) (n) * 1000)

#endif /* defined(_S390_DELAY_H) */