/* * Copyright 2010 Tilera Corporation. All Rights Reserved. * *   This program is free software; you can redistribute it and/or *   modify it under the terms of the GNU General Public License *   as published by the Free Software Foundation, version 2. * *   This program is distributed in the hope that it will be useful, but *   WITHOUT ANY WARRANTY; without even the implied warranty of *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or *   NON INFRINGEMENT.  See the GNU General Public License for *   more details. */ #include <linux/module.h>#include <linux/delay.h>#include <linux/thread_info.h>#include <asm/timex.h> void __udelay(unsigned long usecs){	if (usecs > ULONG_MAX / 1000) {		WARN_ON_ONCE(usecs > ULONG_MAX / 1000);		usecs = ULONG_MAX / 1000;	}	__ndelay(usecs * 1000);}EXPORT_SYMBOL(__udelay); void __ndelay(unsigned long nsecs){	cycles_t target = get_cycles();	target += ns2cycles(nsecs);	while (get_cycles() < target)		cpu_relax();}EXPORT_SYMBOL(__ndelay); void __delay(unsigned long cycles){	cycles_t target = get_cycles() + cycles;	while (get_cycles() < target)		cpu_relax();}EXPORT_SYMBOL(__delay);