2 files changed, 62 insertions, 14 deletions

diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index fe5c7db24247..3db5c3c460d7 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -74,15 +74,17 @@ static struct clocksource *watchdog;
 static struct timer_list watchdog_timer;
 static DEFINE_SPINLOCK(watchdog_lock);
 static cycle_t watchdog_last;
+static int watchdog_resumed;
+
 /*
- * Interval: 0.5sec Treshold: 0.0625s
+ * Interval: 0.5sec Threshold: 0.0625s
  */
 #define WATCHDOG_INTERVAL (HZ >> 1)
-#define WATCHDOG_TRESHOLD (NSEC_PER_SEC >> 4)
+#define WATCHDOG_THRESHOLD (NSEC_PER_SEC >> 4)
 
 static void clocksource_ratewd(struct clocksource *cs, int64_t delta)
 {
-	if (delta > -WATCHDOG_TRESHOLD && delta < WATCHDOG_TRESHOLD)
+	if (delta > -WATCHDOG_THRESHOLD && delta < WATCHDOG_THRESHOLD)
 		return;
 
 	printk(KERN_WARNING "Clocksource %s unstable (delta = %Ld ns)\n",
@@ -98,15 +100,26 @@ static void clocksource_watchdog(unsigned long data)
 	struct clocksource *cs, *tmp;
 	cycle_t csnow, wdnow;
 	int64_t wd_nsec, cs_nsec;
+	int resumed;
 
 	spin_lock(&watchdog_lock);
 
+	resumed = watchdog_resumed;
+	if (unlikely(resumed))
+		watchdog_resumed = 0;
+
 	wdnow = watchdog->read();
 	wd_nsec = cyc2ns(watchdog, (wdnow - watchdog_last) & watchdog->mask);
 	watchdog_last = wdnow;
 
 	list_for_each_entry_safe(cs, tmp, &watchdog_list, wd_list) {
 		csnow = cs->read();
+
+		if (unlikely(resumed)) {
+			cs->wd_last = csnow;
+			continue;
+		}
+
 		/* Initialized ? */
 		if (!(cs->flags & CLOCK_SOURCE_WATCHDOG)) {
 			if ((cs->flags & CLOCK_SOURCE_IS_CONTINUOUS) &&
@@ -136,6 +149,13 @@ static void clocksource_watchdog(unsigned long data)
 	}
 	spin_unlock(&watchdog_lock);
 }
+static void clocksource_resume_watchdog(void)
+{
+	spin_lock(&watchdog_lock);
+	watchdog_resumed = 1;
+	spin_unlock(&watchdog_lock);
+}
+
 static void clocksource_check_watchdog(struct clocksource *cs)
 {
 	struct clocksource *cse;
@@ -182,9 +202,34 @@ static void clocksource_check_watchdog(struct clocksource *cs)
 	if (cs->flags & CLOCK_SOURCE_IS_CONTINUOUS)
 		cs->flags |= CLOCK_SOURCE_VALID_FOR_HRES;
 }
+
+static inline void clocksource_resume_watchdog(void) { }
 #endif
 
 /**
+ * clocksource_resume - resume the clocksource(s)
+ */
+void clocksource_resume(void)
+{
+	struct list_head *tmp;
+	unsigned long flags;
+
+	spin_lock_irqsave(&clocksource_lock, flags);
+
+	list_for_each(tmp, &clocksource_list) {
+		struct clocksource *cs;
+
+		cs = list_entry(tmp, struct clocksource, list);
+		if (cs->resume)
+			cs->resume();
+	}
+
+	clocksource_resume_watchdog();
+
+	spin_unlock_irqrestore(&clocksource_lock, flags);
+}
+
+/**
  * clocksource_get_next - Returns the selected clocksource
  *
  */
diff --git a/kernel/time/timer_list.c b/kernel/time/timer_list.c
index b734ca4bc75e..8bbcfb77f7d2 100644
--- a/kernel/time/timer_list.c
+++ b/kernel/time/timer_list.c
@@ -65,7 +65,7 @@ print_timer(struct seq_file *m, struct hrtimer *timer, int idx, u64 now)
 	SEQ_printf(m, ", %s/%d", tmp, timer->start_pid);
 #endif
 	SEQ_printf(m, "\n");
-	SEQ_printf(m, " # expires at %Ld nsecs [in %Ld nsecs]\n",
+	SEQ_printf(m, " # expires at %Lu nsecs [in %Lu nsecs]\n",
 		(unsigned long long)ktime_to_ns(timer->expires),
 		(unsigned long long)(ktime_to_ns(timer->expires) - now));
 }
@@ -111,14 +111,14 @@ print_base(struct seq_file *m, struct hrtimer_clock_base *base, u64 now)
 {
 	SEQ_printf(m, "  .index:      %d\n",
 			base->index);
-	SEQ_printf(m, "  .resolution: %Ld nsecs\n",
+	SEQ_printf(m, "  .resolution: %Lu nsecs\n",
 			(unsigned long long)ktime_to_ns(base->resolution));
 	SEQ_printf(m,   "  .get_time:   ");
 	print_name_offset(m, base->get_time);
 	SEQ_printf(m,   "\n");
 #ifdef CONFIG_HIGH_RES_TIMERS
-	SEQ_printf(m, "  .offset:     %Ld nsecs\n",
-			ktime_to_ns(base->offset));
+	SEQ_printf(m, "  .offset:     %Lu nsecs\n",
+		   (unsigned long long) ktime_to_ns(base->offset));
 #endif
 	SEQ_printf(m,   "active timers:\n");
 	print_active_timers(m, base, now);
@@ -135,10 +135,11 @@ static void print_cpu(struct seq_file *m, int cpu, u64 now)
 		print_base(m, cpu_base->clock_base + i, now);
 	}
 #define P(x) \
-	SEQ_printf(m, "  .%-15s: %Ld\n", #x, (u64)(cpu_base->x))
+	SEQ_printf(m, "  .%-15s: %Lu\n", #x, \
+		   (unsigned long long)(cpu_base->x))
 #define P_ns(x) \
-	SEQ_printf(m, "  .%-15s: %Ld nsecs\n", #x, \
-		(u64)(ktime_to_ns(cpu_base->x)))
+	SEQ_printf(m, "  .%-15s: %Lu nsecs\n", #x, \
+		   (unsigned long long)(ktime_to_ns(cpu_base->x)))
 
 #ifdef CONFIG_HIGH_RES_TIMERS
 	P_ns(expires_next);
@@ -150,10 +151,11 @@ static void print_cpu(struct seq_file *m, int cpu, u64 now)
 
 #ifdef CONFIG_TICK_ONESHOT
 # define P(x) \
-	SEQ_printf(m, "  .%-15s: %Ld\n", #x, (u64)(ts->x))
+	SEQ_printf(m, "  .%-15s: %Lu\n", #x, \
+		   (unsigned long long)(ts->x))
 # define P_ns(x) \
-	SEQ_printf(m, "  .%-15s: %Ld nsecs\n", #x, \
-		(u64)(ktime_to_ns(ts->x)))
+	SEQ_printf(m, "  .%-15s: %Lu nsecs\n", #x, \
+		   (unsigned long long)(ktime_to_ns(ts->x)))
 	{
 		struct tick_sched *ts = tick_get_tick_sched(cpu);
 		P(nohz_mode);
@@ -167,7 +169,8 @@ static void print_cpu(struct seq_file *m, int cpu, u64 now)
 		P(last_jiffies);
 		P(next_jiffies);
 		P_ns(idle_expires);
-		SEQ_printf(m, "jiffies: %Ld\n", (u64)jiffies);
+		SEQ_printf(m, "jiffies: %Lu\n",
+			   (unsigned long long)jiffies);
 	}
 #endif