ia64/linux-2.6.18-xen.hg

view include/asm-v850/delay.h @ 452:c7ed6fe5dca0

kexec: dont initialise regions in reserve_memory()

There is no need to initialise efi_memmap_res and boot_param_res in
reserve_memory() for the initial xen domain as it is done in
machine_kexec_setup_resources() using values from the kexec hypercall.

Signed-off-by: Simon Horman <horms@verge.net.au>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Feb 28 10:55:18 2008 +0000 (2008-02-28)
parents 831230e53067
children
line source
1 /*
2 * include/asm-v850/delay.h -- Delay routines, using a pre-computed
3 * "loops_per_second" value
4 *
5 * Copyright (C) 2001,03 NEC Corporation
6 * Copyright (C) 2001,03 Miles Bader <miles@gnu.org>
7 * Copyright (C) 1994 Hamish Macdonald
8 *
9 * This file is subject to the terms and conditions of the GNU General
10 * Public License. See the file COPYING in the main directory of this
11 * archive for more details.
12 */
14 #ifndef __V850_DELAY_H__
15 #define __V850_DELAY_H__
17 #include <asm/param.h>
19 static inline void __delay(unsigned long loops)
20 {
21 if (loops)
22 __asm__ __volatile__ ("1: add -1, %0; bnz 1b"
23 : "=r" (loops) : "0" (loops));
24 }
26 /*
27 * Use only for very small delays ( < 1 msec). Should probably use a
28 * lookup table, really, as the multiplications take much too long with
29 * short delays. This is a "reasonable" implementation, though (and the
30 * first constant multiplications gets optimized away if the delay is
31 * a constant)
32 */
34 extern unsigned long loops_per_jiffy;
36 static inline void udelay(unsigned long usecs)
37 {
38 register unsigned long full_loops, part_loops;
40 full_loops = ((usecs * HZ) / 1000000) * loops_per_jiffy;
41 usecs %= (1000000 / HZ);
42 part_loops = (usecs * HZ * loops_per_jiffy) / 1000000;
44 __delay(full_loops + part_loops);
45 }
47 #endif /* __V850_DELAY_H__ */