1/*
 2 *  linux/arch/cris/kernel/time.c
 3 *
 4 *  Copyright (C) 1991, 1992, 1995  Linus Torvalds
 5 *  Copyright (C) 1999, 2000, 2001 Axis Communications AB
 6 *
 7 * 1994-07-02    Alan Modra
 8 *	fixed set_rtc_mmss, fixed time.year for >= 2000, new mktime
 9 * 1995-03-26    Markus Kuhn
10 *      fixed 500 ms bug at call to set_rtc_mmss, fixed DS12887
11 *      precision CMOS clock update
12 * 1996-05-03    Ingo Molnar
13 *      fixed time warps in do_[slow|fast]_gettimeoffset()
14 * 1997-09-10	Updated NTP code according to technical memorandum Jan '96
15 *		"A Kernel Model for Precision Timekeeping" by Dave Mills
16 *
17 * Linux/CRIS specific code:
18 *
19 * Authors:    Bjorn Wesen
20 *             Johan Adolfsson
21 *
22 */
23
24#include <linux/errno.h>
25#include <linux/module.h>
26#include <linux/param.h>
27#include <linux/jiffies.h>
28#include <linux/bcd.h>
29#include <linux/timex.h>
30#include <linux/init.h>
31#include <linux/profile.h>
32#include <linux/sched.h>	/* just for sched_clock() - funny that */
33
34
35#define D(x)
36
37#define TICK_SIZE tick
38
39extern unsigned long loops_per_jiffy; /* init/main.c */
40unsigned long loops_per_usec;
41
42extern void cris_profile_sample(struct pt_regs* regs);
43
44void
45cris_do_profile(struct pt_regs* regs)
46{
47
48#ifdef CONFIG_SYSTEM_PROFILER
49        cris_profile_sample(regs);
50#endif
51
52#ifdef CONFIG_PROFILING
53	profile_tick(CPU_PROFILING);
54#endif
55}
56
57#ifndef CONFIG_GENERIC_SCHED_CLOCK
58unsigned long long sched_clock(void)
59{
60	return (unsigned long long)jiffies * (NSEC_PER_SEC / HZ) +
61		get_ns_in_jiffie();
62}
63#endif
64
65static int
66__init init_udelay(void)
67{
68	loops_per_usec = (loops_per_jiffy * HZ) / 1000000;
69	return 0;
70}
71
72__initcall(init_udelay);