35aefb2645
With a few small changes we can make the m68knommu timer init code the same as the m68k code. By using the mach_sched_init function pointer and reworking the current timer initializers to keep track of the common m68k timer_interrupt() handler we end up with almost identical code for m68knommu. This will allow us to more easily merge the mmu and non-mmu m68k time.c in future patches. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
77 lines
1.6 KiB
C
77 lines
1.6 KiB
C
/*
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* linux/arch/m68knommu/kernel/time.c
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*
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* Copyright (C) 1991, 1992, 1995 Linus Torvalds
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*
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* This file contains the m68k-specific time handling details.
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* Most of the stuff is located in the machine specific files.
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*
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* 1997-09-10 Updated NTP code according to technical memorandum Jan '96
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* "A Kernel Model for Precision Timekeeping" by Dave Mills
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*/
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#include <linux/errno.h>
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#include <linux/module.h>
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#include <linux/sched.h>
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#include <linux/kernel.h>
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#include <linux/param.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/profile.h>
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#include <linux/time.h>
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#include <linux/timex.h>
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#include <linux/rtc.h>
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#include <asm/machdep.h>
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#include <asm/irq_regs.h>
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static inline int set_rtc_mmss(unsigned long nowtime)
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{
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if (mach_set_clock_mmss)
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return mach_set_clock_mmss (nowtime);
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return -1;
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}
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/*
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* timer_interrupt() needs to keep up the real-time clock,
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* as well as call the "xtime_update()" routine every clocktick
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*/
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static irqreturn_t timer_interrupt(int irq, void *dummy)
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{
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if (current->pid)
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profile_tick(CPU_PROFILING);
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xtime_update(1);
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update_process_times(user_mode(get_irq_regs()));
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return(IRQ_HANDLED);
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}
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void read_persistent_clock(struct timespec *ts)
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{
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struct rtc_time time;
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ts->tv_sec = 0;
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ts->tv_nsec = 0;
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if (mach_hwclk) {
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mach_hwclk(0, &time);
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if ((time.tm_year += 1900) < 1970)
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time.tm_year += 100;
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ts->tv_sec = mktime(time.tm_year, time.tm_mon, time.tm_mday,
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time.tm_hour, time.tm_min, time.tm_sec);
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}
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}
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int update_persistent_clock(struct timespec now)
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{
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return set_rtc_mmss(now.tv_sec);
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}
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void __init time_init(void)
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{
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mach_sched_init(timer_interrupt);
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}
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