[BACK]Return to delay.h CVS log [TXT][DIR] Up to [Development] / linux-2.6-xfs-all / include / asm-um
File: [Development] / linux-2.6-xfs-all / include / asm-um / delay.h (download)

Revision 1.3, Fri May 4 16:01:13 2007 UTC (10 years, 5 months ago) by tes.longdrop.melbourne.sgi.com
Branch: MAIN
CVS Tags: HEAD
Changes since 1.2: +14 -3 lines 

Merge up to 2.6.21
Merge of 2.6.x-xfs-melb:linux:28510a by kenmcd.

#ifndef __UM_DELAY_H
#define __UM_DELAY_H

#define MILLION 1000000

/* Undefined on purpose */
extern void __bad_udelay(void);

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

#define udelay(n) ((__builtin_constant_p(n) && (n) > 20000) ? \
	__bad_udelay() : __udelay(n))

/* It appears that ndelay is not used at all for UML, and has never been
 * implemented. */
extern void __unimplemented_ndelay(void);
#define ndelay(n) __unimplemented_ndelay()

#endif