diff options
Diffstat (limited to 'arch/h8300/kernel/time.c')
| -rw-r--r-- | arch/h8300/kernel/time.c | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/arch/h8300/kernel/time.c b/arch/h8300/kernel/time.c deleted file mode 100644 index 688a5100604..00000000000 --- a/arch/h8300/kernel/time.c +++ /dev/null @@ -1,127 +0,0 @@ -/* - * linux/arch/h8300/kernel/time.c - * - * Yoshinori Sato <ysato@users.sourceforge.jp> - * - * Copied/hacked from: - * - * linux/arch/m68k/kernel/time.c - * - * Copyright (C) 1991, 1992, 1995 Linus Torvalds - * - * This file contains the m68k-specific time handling details. - * Most of the stuff is located in the machine specific files. - * - * 1997-09-10 Updated NTP code according to technical memorandum Jan '96 - * "A Kernel Model for Precision Timekeeping" by Dave Mills - */ - -#include <linux/config.h> /* CONFIG_HEARTBEAT */ -#include <linux/errno.h> -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/kernel.h> -#include <linux/param.h> -#include <linux/string.h> -#include <linux/mm.h> -#include <linux/timex.h> -#include <linux/profile.h> - -#include <asm/io.h> -#include <asm/target_time.h> - -#define TICK_SIZE (tick_nsec / 1000) - -/* - * timer_interrupt() needs to keep up the real-time clock, - * as well as call the "do_timer()" routine every clocktick - */ -static void timer_interrupt(int irq, void *dummy, struct pt_regs * regs) -{ - /* may need to kick the hardware timer */ - platform_timer_eoi(); - - do_timer(regs); -#ifndef CONFIG_SMP - update_process_times(user_mode(regs)); -#endif - profile_tick(CPU_PROFILING, regs); -} - -void time_init(void) -{ - unsigned int year, mon, day, hour, min, sec; - - /* FIX by dqg : Set to zero for platforms that don't have tod */ - /* without this time is undefined and can overflow time_t, causing */ - /* very stange errors */ - year = 1980; - mon = day = 1; - hour = min = sec = 0; - platform_gettod (&year, &mon, &day, &hour, &min, &sec); - - if ((year += 1900) < 1970) - year += 100; - xtime.tv_sec = mktime(year, mon, day, hour, min, sec); - xtime.tv_nsec = 0; - - platform_timer_setup(timer_interrupt); -} - -/* - * This version of gettimeofday has near microsecond resolution. - */ -void do_gettimeofday(struct timeval *tv) -{ - unsigned long flags; - unsigned long usec, sec; - - read_lock_irqsave(&xtime_lock, flags); - usec = 0; - sec = xtime.tv_sec; - usec += (xtime.tv_nsec / 1000); - read_unlock_irqrestore(&xtime_lock, flags); - - while (usec >= 1000000) { - usec -= 1000000; - sec++; - } - - tv->tv_sec = sec; - tv->tv_usec = usec; -} - -EXPORT_SYMBOL(do_gettimeofday); - -int do_settimeofday(struct timespec *tv) -{ - if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC) - return -EINVAL; - - write_lock_irq(&xtime_lock); - /* This is revolting. We need to set the xtime.tv_usec - * correctly. However, the value in this location is - * is value at the last tick. - * Discover what correction gettimeofday - * would have done, and then undo it! - */ - while (tv->tv_nsec < 0) { - tv->tv_nsec += NSEC_PER_SEC; - tv->tv_sec--; - } - - xtime.tv_sec = tv->tv_sec; - xtime.tv_nsec = tv->tv_nsec; - ntp_clear(); - write_sequnlock_irq(&xtime_lock); - clock_was_set(); - return 0; -} - -EXPORT_SYMBOL(do_settimeofday); - -unsigned long long sched_clock(void) -{ - return (unsigned long long)jiffies * (1000000000 / HZ); - -} |
