#ifndef _X8664_DELAY_H #define _X8664_DELAY_H /* * Copyright (C) 1993 Linus Torvalds * * Delay routines calling functions in arch/x86_64/lib/delay.c */ extern void __bad_udelay(void); extern void __bad_ndelay(void); extern void __udelay(unsigned long usecs); extern void __ndelay(unsigned long usecs); extern void __const_udelay(unsigned long usecs); extern void __delay(unsigned long loops); #define udelay(n) (__builtin_constant_p(n) ? \ ((n) > 20000 ? __bad_udelay() : __const_udelay((n) * 0x10c6ul)) : \ __udelay(n)) #define ndelay(n) (__builtin_constant_p(n) ? \ ((n) > 20000 ? __bad_ndelay() : __const_udelay((n) * 5ul)) : \ __ndelay(n)) #endif /* defined(_X8664_DELAY_H) */