fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-h8300 / delay.h
blob743beba70f82a71606d6c786e8e7d8257295fcc8
1 #ifndef _H8300_DELAY_H
2 #define _H8300_DELAY_H
4 #include <asm/param.h>
6 /*
7 * Copyright (C) 2002 Yoshinori Sato <ysato@sourceforge.jp>
9 * Delay routines, using a pre-computed "loops_per_second" value.
12 static inline void __delay(unsigned long loops)
14 __asm__ __volatile__ ("1:\n\t"
15 "dec.l #1,%0\n\t"
16 "bne 1b"
17 :"=r" (loops):"0"(loops));
21 * Use only for very small delays ( < 1 msec). Should probably use a
22 * lookup table, really, as the multiplications take much too long with
23 * short delays. This is a "reasonable" implementation, though (and the
24 * first constant multiplications gets optimized away if the delay is
25 * a constant)
28 extern unsigned long loops_per_jiffy;
30 static inline void udelay(unsigned long usecs)
32 usecs *= 4295; /* 2**32 / 1000000 */
33 usecs /= (loops_per_jiffy*HZ);
34 if (usecs)
35 __delay(usecs);
38 #endif /* _H8300_DELAY_H */