1 files changed, 19 insertions, 134 deletions

diff --git a/arch/i386/kernel/time.c b/arch/i386/kernel/time.c
index 796e5faa6ca7..2a6ab86ffc15 100644
--- a/arch/i386/kernel/time.c
+++ b/arch/i386/kernel/time.c
@@ -82,7 +82,8 @@ extern unsigned long wall_jiffies;
 DEFINE_SPINLOCK(rtc_lock);
 EXPORT_SYMBOL(rtc_lock);
 
-struct timer_opts *cur_timer __read_mostly = &timer_none;
+/* XXX - necessary to keep things compiling. to be removed later */
+u32 pmtmr_ioport;
 
 /*
  * This is a special lock that is owned by the CPU and holds the index
@@ -113,99 +114,19 @@ void rtc_cmos_write(unsigned char val, unsigned char addr)
 }
 EXPORT_SYMBOL(rtc_cmos_write);
 
-/*
- * This version of gettimeofday has microsecond resolution
- * and better than microsecond precision on fast x86 machines with TSC.
- */
-void do_gettimeofday(struct timeval *tv)
-{
-        unsigned long seq;
-        unsigned long usec, sec;
-        unsigned long max_ntp_tick;
-
-        do {
-                unsigned long lost;
-
-                seq = read_seqbegin(&xtime_lock);
-
-                usec = cur_timer->get_offset();
-                lost = jiffies - wall_jiffies;
-
-                /*
-                 * If time_adjust is negative then NTP is slowing the clock
-                 * so make sure not to go into next possible interval.
-                 * Better to lose some accuracy than have time go backwards..
-                 */
-                if (unlikely(time_adjust < 0)) {
-                        max_ntp_tick = (USEC_PER_SEC / HZ) - tickadj;
-                        usec = min(usec, max_ntp_tick);
-
-                        if (lost)
-                                usec += lost * max_ntp_tick;
-                }
-                else if (unlikely(lost))
-                        usec += lost * (USEC_PER_SEC / HZ);
-
-                sec = xtime.tv_sec;
-                usec += (xtime.tv_nsec / 1000);
-        } while (read_seqretry(&xtime_lock, seq));
-
-        while (usec >= 1000000) {
-                usec -= 1000000;
-                sec++;
-        }
-
-        tv->tv_sec = sec;
-        tv->tv_usec = usec;
-}
-
-EXPORT_SYMBOL(do_gettimeofday);
-
-int do_settimeofday(struct timespec *tv)
-{
-        time_t wtm_sec, sec = tv->tv_sec;
-        long wtm_nsec, nsec = tv->tv_nsec;
-
-        if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC)
-                return -EINVAL;
-
-        write_seqlock_irq(&xtime_lock);
-        /*
-         * This is revolting. We need to set "xtime" correctly. However, the
-         * value in this location is the value at the most recent update of
-         * wall time.  Discover what correction gettimeofday() would have
-         * made, and then undo it!
-         */
-        nsec -= cur_timer->get_offset() * NSEC_PER_USEC;
-        nsec -= (jiffies - wall_jiffies) * TICK_NSEC;
-
-        wtm_sec  = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec);
-        wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec);
-
-        set_normalized_timespec(&xtime, sec, nsec);
-        set_normalized_timespec(&wall_to_monotonic, wtm_sec, wtm_nsec);
-
-        ntp_clear();
-        write_sequnlock_irq(&xtime_lock);
-        clock_was_set();
-        return 0;
-}
-
-EXPORT_SYMBOL(do_settimeofday);
-
 static int set_rtc_mmss(unsigned long nowtime)
 {
         int retval;
-
-        WARN_ON(irqs_disabled());
+        unsigned long flags;
 
         /* gets recalled with irq locally disabled */
-        spin_lock_irq(&rtc_lock);
+        /* XXX - does irqsave resolve this? -johnstul */
+        spin_lock_irqsave(&rtc_lock, flags);
         if (efi_enabled)
                 retval = efi_set_rtc_mmss(nowtime);
         else
                 retval = mach_set_rtc_mmss(nowtime);
-        spin_unlock_irq(&rtc_lock);
+        spin_unlock_irqrestore(&rtc_lock, flags);
 
         return retval;
 }
@@ -213,16 +134,6 @@ static int set_rtc_mmss(unsigned long nowtime)
 
 int timer_ack;
 
-/* monotonic_clock(): returns # of nanoseconds passed since time_init()
- *              Note: This function is required to return accurate
- *              time even in the absence of multiple timer ticks.
- */
-unsigned long long monotonic_clock(void)
-{
-        return cur_timer->monotonic_clock();
-}
-EXPORT_SYMBOL(monotonic_clock);
-
 #if defined(CONFIG_SMP) && defined(CONFIG_FRAME_POINTER)
 unsigned long profile_pc(struct pt_regs *regs)
 {
@@ -237,11 +148,21 @@ EXPORT_SYMBOL(profile_pc);
 #endif
 
 /*
- * timer_interrupt() needs to keep up the real-time clock,
- * as well as call the "do_timer()" routine every clocktick
+ * This is the same as the above, except we _also_ save the current
+ * Time Stamp Counter value at the time of the timer interrupt, so that
+ * we later on can estimate the time of day more exactly.
  */
-static inline void do_timer_interrupt(int irq, struct pt_regs *regs)
+irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 {
+        /*
+         * Here we are in the timer irq handler. We just have irqs locally
+         * disabled but we don't know if the timer_bh is running on the other
+         * CPU. We need to avoid to SMP race with it. NOTE: we don' t need
+         * the irq version of write_lock because as just said we have irq
+         * locally disabled. -arca
+         */
+        write_seqlock(&xtime_lock);
+
 #ifdef CONFIG_X86_IO_APIC
         if (timer_ack) {
                 /*
@@ -274,27 +195,6 @@ static inline void do_timer_interrupt(int irq, struct pt_regs *regs)
                 irq = inb_p( 0x61 );    /* read the current state */
                 outb_p( irq|0x80, 0x61 );       /* reset the IRQ */
         }
-}
-
-/*
- * This is the same as the above, except we _also_ save the current
- * Time Stamp Counter value at the time of the timer interrupt, so that
- * we later on can estimate the time of day more exactly.
- */
-irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
-        /*
-         * Here we are in the timer irq handler. We just have irqs locally
-         * disabled but we don't know if the timer_bh is running on the other
-         * CPU. We need to avoid to SMP race with it. NOTE: we don' t need
-         * the irq version of write_lock because as just said we have irq
-         * locally disabled. -arca
-         */
-        write_seqlock(&xtime_lock);
-
-        cur_timer->mark_offset();
- 
-        do_timer_interrupt(irq, regs);
 
         write_sequnlock(&xtime_lock);
 
@@ -375,7 +275,6 @@ void notify_arch_cmos_timer(void)
 
 static long clock_cmos_diff, sleep_start;
 
-static struct timer_opts *last_timer;
 static int timer_suspend(struct sys_device *dev, pm_message_t state)
 {
         /*
@@ -384,10 +283,6 @@ static int timer_suspend(struct sys_device *dev, pm_message_t state)
         clock_cmos_diff = -get_cmos_time();
         clock_cmos_diff += get_seconds();
         sleep_start = get_cmos_time();
-        last_timer = cur_timer;
-        cur_timer = &timer_none;
-        if (last_timer->suspend)
-                last_timer->suspend(state);
         return 0;
 }
 
@@ -410,10 +305,6 @@ static int timer_resume(struct sys_device *dev)
         jiffies_64 += sleep_length;
         wall_jiffies += sleep_length;
         write_sequnlock_irqrestore(&xtime_lock, flags);
-        if (last_timer->resume)
-                last_timer->resume();
-        cur_timer = last_timer;
-        last_timer = NULL;
         touch_softlockup_watchdog();
         return 0;
 }
@@ -455,9 +346,6 @@ static void __init hpet_time_init(void)
                 printk("Using HPET for base-timer\n");
         }
 
-        cur_timer = select_timer();
-        printk(KERN_INFO "Using %s for high-res timesource\n",cur_timer->name);
-
         time_init_hook();
 }
 #endif
@@ -479,8 +367,5 @@ void __init time_init(void)
         set_normalized_timespec(&wall_to_monotonic,
                 -xtime.tv_sec, -xtime.tv_nsec);
 
-        cur_timer = select_timer();
-        printk(KERN_INFO "Using %s for high-res timesource\n",cur_timer->name);
-
         time_init_hook();
 }