ARM: OMAP: Manual merge after updating to 2.6.16

Manual merge after updating to 2.6.16

kernel/timer.c

@@ -488,7 +488,8 @@ unsigned long next_timer_interrupt(void)
 	tvec_base_t *base;
 	struct list_head *list;
 	struct timer_list *nte;
-	unsigned long expires, hr_expires = MAX_JIFFY_OFFSET;
+	unsigned long expires;
+	unsigned long hr_expires = MAX_JIFFY_OFFSET;
 	ktime_t hr_delta;
 	tvec_t *varray[4];
 	int i, j;
@@ -940,6 +941,8 @@ static inline void update_times(void)
 void do_timer(struct pt_regs *regs)
 {
 	jiffies_64++;
+	/* prevent loading jiffies before storing new jiffies_64 value. */
+	barrier();
 	update_times();
 	softlockup_tick(regs);
 }
@@ -1351,8 +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 *time_interpolator __read_mostly;
+static struct time_interpolator *time_interpolator_list __read_mostly;
 static DEFINE_SPINLOCK(time_interpolator_lock);
 
 static inline u64 time_interpolator_get_cycles(unsigned int src)
@@ -1366,10 +1369,10 @@ static inline u64 time_interpolator_get_cycles(unsigned int src)
 			return x();
 
 		case TIME_SOURCE_MMIO64	:
-			return readq((void __iomem *) time_interpolator->addr);
+			return readq_relaxed((void __iomem *)time_interpolator->addr);
 
 		case TIME_SOURCE_MMIO32	:
-			return readl((void __iomem *) time_interpolator->addr);
+			return readl_relaxed((void __iomem *)time_interpolator->addr);
 
 		default: return get_cycles();
 	}