Index: linux-2.6.16-rc6/kernel/timer.c
===================================================================
--- linux-2.6.16-rc6.orig/kernel/timer.c	2006-03-11 14:12:55.000000000 -0800
+++ linux-2.6.16-rc6/kernel/timer.c	2006-03-15 16:10:53.000000000 -0800
@@ -567,8 +567,8 @@ found:
 /*
  * Timekeeping variables
  */
-unsigned long tick_usec = TICK_USEC; 		/* USER_HZ period (usec) */
-unsigned long tick_nsec = TICK_NSEC;		/* ACTHZ period (nsec) */
+unsigned long __read_mostly tick_usec = TICK_USEC; 		/* USER_HZ period (usec) */
+unsigned long __read_mostly tick_nsec = TICK_NSEC;		/* ACTHZ period (nsec) */
 
 /* 
  * The current time 
@@ -584,7 +584,7 @@ struct timespec wall_to_monotonic __attr
 EXPORT_SYMBOL(xtime);
 
 /* Don't completely fail for HZ > 500.  */
-int tickadj = 500/HZ ? : 1;		/* microsecs */
+int __read_mostly tickadj = 500/HZ ? : 1;		/* microsecs */
 
 
 /*
@@ -860,7 +860,7 @@ static unsigned long count_active_tasks(
  *
  * Requires xtime_lock to access.
  */
-unsigned long avenrun[3];
+unsigned long __read_mostly avenrun[3];
 
 EXPORT_SYMBOL(avenrun);
 
@@ -1354,8 +1354,8 @@ void __init init_timers(void)
 
 #ifdef CONFIG_TIME_INTERPOLATION
 
-struct time_interpolator *time_interpolator;
-static struct time_interpolator *time_interpolator_list;
+struct time_interpolator * __read_mostly time_interpolator;
+static struct time_interpolator * __read_mostly time_interpolator_list;
 static DEFINE_SPINLOCK(time_interpolator_lock);
 
 static inline u64 time_interpolator_get_cycles(unsigned int src)