X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Falpha%2Fkernel%2Ftime.c;h=d7053eb4ffcfd93623d58aabda82d30cf9118dee;hb=refs%2Fheads%2Fvserver;hp=6b2921be19090c9a5a0a6a85a87f4e6d525ff258;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git

diff --git a/arch/alpha/kernel/time.c b/arch/alpha/kernel/time.c
index 6b2921be1..d7053eb4f 100644
--- a/arch/alpha/kernel/time.c
+++ b/arch/alpha/kernel/time.c
@@ -27,7 +27,6 @@
  * 2003-06-03	R. Scott Bailey <scott.bailey@eds.com>
  *	Tighten sanity in time_init from 1% (10,000 PPM) to 250 PPM
  */
-#include <linux/config.h>
 #include <linux/errno.h>
 #include <linux/module.h>
 #include <linux/sched.h>
@@ -55,11 +54,10 @@
 #include "proto.h"
 #include "irq_impl.h"
 
-extern unsigned long wall_jiffies;	/* kernel/timer.c */
-
 static int set_rtc_mmss(unsigned long);
 
 DEFINE_SPINLOCK(rtc_lock);
+EXPORT_SYMBOL(rtc_lock);
 
 #define TICK_SIZE (tick_nsec / 1000)
 
@@ -107,7 +105,7 @@ unsigned long long sched_clock(void)
  * timer_interrupt() needs to keep up the real-time clock,
  * as well as call the "do_timer()" routine every clocktick
  */
-irqreturn_t timer_interrupt(int irq, void *dev, struct pt_regs * regs)
+irqreturn_t timer_interrupt(int irq, void *dev)
 {
 	unsigned long delta;
 	__u32 now;
@@ -115,7 +113,7 @@ irqreturn_t timer_interrupt(int irq, void *dev, struct pt_regs * regs)
 
 #ifndef CONFIG_SMP
 	/* Not SMP, do kernel PC profiling here.  */
-	profile_tick(CPU_PROFILING, regs);
+	profile_tick(CPU_PROFILING);
 #endif
 
 	write_seqlock(&xtime_lock);
@@ -133,9 +131,9 @@ irqreturn_t timer_interrupt(int irq, void *dev, struct pt_regs * regs)
 	nticks = delta >> FIX_SHIFT;
 
 	while (nticks > 0) {
-		do_timer(regs);
+		do_timer(1);
 #ifndef CONFIG_SMP
-		update_process_times(user_mode(regs));
+		update_process_times(user_mode(get_irq_regs()));
 #endif
 		nticks--;
 	}
@@ -234,7 +232,7 @@ validate_cc_value(unsigned long cc)
 	index = cpu->type & 0xffffffff;
 
 	/* If index out of bounds, no way to validate.  */
-	if (index >= sizeof(cpu_hz)/sizeof(cpu_hz[0]))
+	if (index >= ARRAY_SIZE(cpu_hz))
 		return cc;
 
 	/* If index contains no data, no way to validate.  */
@@ -314,10 +312,11 @@ time_init(void)
 	if (!est_cycle_freq)
 		est_cycle_freq = validate_cc_value(calibrate_cc_with_pit());
 
-	cc1 = rpcc_after_update_in_progress();
+	cc1 = rpcc();
 
 	/* Calibrate CPU clock -- attempt #2.  */
 	if (!est_cycle_freq) {
+		cc1 = rpcc_after_update_in_progress();
 		cc2 = rpcc_after_update_in_progress();
 		est_cycle_freq = validate_cc_value(cc2 - cc1);
 		cc1 = cc2;
@@ -413,7 +412,7 @@ void
 do_gettimeofday(struct timeval *tv)
 {
 	unsigned long flags;
-	unsigned long sec, usec, lost, seq;
+	unsigned long sec, usec, seq;
 	unsigned long delta_cycles, delta_usec, partial_tick;
 
 	do {
@@ -423,14 +422,13 @@ do_gettimeofday(struct timeval *tv)
 		sec = xtime.tv_sec;
 		usec = (xtime.tv_nsec / 1000);
 		partial_tick = state.partial_tick;
-		lost = jiffies - wall_jiffies;
 
 	} while (read_seqretry_irqrestore(&xtime_lock, seq, flags));
 
 #ifdef CONFIG_SMP
 	/* Until and unless we figure out how to get cpu cycle counters
 	   in sync and keep them there, we can't use the rpcc tricks.  */
-	delta_usec = lost * (1000000 / HZ);
+	delta_usec = 0;
 #else
 	/*
 	 * usec = cycles * ticks_per_cycle * 2**48 * 1e6 / (2**48 * ticks)
@@ -446,8 +444,7 @@ do_gettimeofday(struct timeval *tv)
 	 */
 
 	delta_usec = (delta_cycles * state.scaled_ticks_per_cycle 
-		      + partial_tick
-		      + (lost << FIX_SHIFT)) * 15625;
+		      + partial_tick) * 15625;
 	delta_usec = ((delta_usec / ((1UL << (FIX_SHIFT-6-1)) * HZ)) + 1) / 2;
 #endif
 
@@ -480,12 +477,11 @@ do_settimeofday(struct timespec *tv)
 	   time.  Without this, a full-tick error is possible.  */
 
 #ifdef CONFIG_SMP
-	delta_nsec = (jiffies - wall_jiffies) * (NSEC_PER_SEC / HZ);
+	delta_nsec = 0;
 #else
 	delta_nsec = rpcc() - state.last_time;
 	delta_nsec = (delta_nsec * state.scaled_ticks_per_cycle 
-		      + state.partial_tick
-		      + ((jiffies - wall_jiffies) << FIX_SHIFT)) * 15625;
+		      + state.partial_tick) * 15625;
 	delta_nsec = ((delta_nsec / ((1UL << (FIX_SHIFT-6-1)) * HZ)) + 1) / 2;
 	delta_nsec *= 1000;
 #endif