3 files changed, 65 insertions, 78 deletions

diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
index 62f500c724f9..4135c88fe4fa 100644
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -148,9 +148,7 @@ struct hrtimer_clock_base {
         ktime_t                 resolution;
         ktime_t                 (*get_time)(void);
         ktime_t                 softirq_time;
-#ifdef CONFIG_HIGH_RES_TIMERS
         ktime_t                 offset;
-#endif
 };
 
 enum  hrtimer_base_type {
@@ -256,8 +254,6 @@ static inline ktime_t hrtimer_expires_remaining(const struct hrtimer *timer)
 #ifdef CONFIG_HIGH_RES_TIMERS
 struct clock_event_device;
 
-extern void clock_was_set(void);
-extern void hres_timers_resume(void);
 extern void hrtimer_interrupt(struct clock_event_device *dev);
 
 /*
@@ -291,16 +287,8 @@ extern void hrtimer_peek_ahead_timers(void);
 # define MONOTONIC_RES_NSEC     LOW_RES_NSEC
 # define KTIME_MONOTONIC_RES    KTIME_LOW_RES
 
-/*
- * clock_was_set() is a NOP for non- high-resolution systems. The
- * time-sorted order guarantees that a timer does not expire early and
- * is expired in the next softirq when the clock was advanced.
- */
-static inline void clock_was_set(void) { }
 static inline void hrtimer_peek_ahead_timers(void) { }
 
-static inline void hres_timers_resume(void) { }
-
 /*
  * In non high resolution mode the time reference is taken from
  * the base softirq time variable.
@@ -316,11 +304,13 @@ static inline int hrtimer_is_hres_active(struct hrtimer *timer)
 }
 #endif
 
+extern void clock_was_set(void);
+extern void hrtimers_resume(void);
+
 extern ktime_t ktime_get(void);
 extern ktime_t ktime_get_real(void);
 extern ktime_t ktime_get_boottime(void);
 
-
 DECLARE_PER_CPU(struct tick_device, tick_cpu_device);
 
 
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index dbbbf7d43080..c145ed643bca 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -621,66 +621,6 @@ static int hrtimer_reprogram(struct hrtimer *timer,
         return res;
 }
 
-
-/*
- * Retrigger next event is called after clock was set
- *
- * Called with interrupts disabled via on_each_cpu()
- */
-static void retrigger_next_event(void *arg)
-{
-        struct hrtimer_cpu_base *base;
-        struct timespec realtime_offset, wtm, sleep;
-
-        if (!hrtimer_hres_active())
-                return;
-
-        get_xtime_and_monotonic_and_sleep_offset(&realtime_offset, &wtm,
-                                                        &sleep);
-        set_normalized_timespec(&realtime_offset, -wtm.tv_sec, -wtm.tv_nsec);
-
-        base = &__get_cpu_var(hrtimer_bases);
-
-        /* Adjust CLOCK_REALTIME offset */
-        raw_spin_lock(&base->lock);
-        base->clock_base[HRTIMER_BASE_REALTIME].offset =
-                timespec_to_ktime(realtime_offset);
-        base->clock_base[HRTIMER_BASE_BOOTTIME].offset =
-                timespec_to_ktime(sleep);
-
-        hrtimer_force_reprogram(base, 0);
-        raw_spin_unlock(&base->lock);
-}
-
-/*
- * Clock realtime was set
- *
- * Change the offset of the realtime clock vs. the monotonic
- * clock.
- *
- * We might have to reprogram the high resolution timer interrupt. On
- * SMP we call the architecture specific code to retrigger _all_ high
- * resolution timer interrupts. On UP we just disable interrupts and
- * call the high resolution interrupt code.
- */
-void clock_was_set(void)
-{
-        /* Retrigger the CPU local events everywhere */
-        on_each_cpu(retrigger_next_event, NULL, 1);
-}
-
-/*
- * During resume we might have to reprogram the high resolution timer
- * interrupt (on the local CPU):
- */
-void hres_timers_resume(void)
-{
-        WARN_ONCE(!irqs_disabled(),
-                  KERN_INFO "hres_timers_resume() called with IRQs enabled!");
-
-        retrigger_next_event(NULL);
-}
-
 /*
  * Initialize the high resolution related parts of cpu_base
  */
@@ -714,12 +654,14 @@ static inline int hrtimer_enqueue_reprogram(struct hrtimer *timer,
         return 0;
 }
 
+static void retrigger_next_event(void *arg);
+
 /*
  * Switch to high resolution mode
  */
 static int hrtimer_switch_to_hres(void)
 {
-        int cpu = smp_processor_id();
+        int i, cpu = smp_processor_id();
         struct hrtimer_cpu_base *base = &per_cpu(hrtimer_bases, cpu);
         unsigned long flags;
 
@@ -735,9 +677,8 @@ static int hrtimer_switch_to_hres(void)
                 return 0;
         }
         base->hres_active = 1;
-        base->clock_base[HRTIMER_BASE_REALTIME].resolution = KTIME_HIGH_RES;
-        base->clock_base[HRTIMER_BASE_MONOTONIC].resolution = KTIME_HIGH_RES;
-        base->clock_base[HRTIMER_BASE_BOOTTIME].resolution = KTIME_HIGH_RES;
+        for (i = 0; i < HRTIMER_MAX_CLOCK_BASES; i++)
+                base->clock_base[i].resolution = KTIME_HIGH_RES;
 
         tick_setup_sched_timer();
 
@@ -764,6 +705,62 @@ static inline void hrtimer_init_hres(struct hrtimer_cpu_base *base) { }
 
 #endif /* CONFIG_HIGH_RES_TIMERS */
 
+/*
+ * Retrigger next event is called after clock was set
+ *
+ * Called with interrupts disabled via on_each_cpu()
+ */
+static void retrigger_next_event(void *arg)
+{
+        struct hrtimer_cpu_base *base = &__get_cpu_var(hrtimer_bases);
+        struct timespec realtime_offset, xtim, wtm, sleep;
+
+        if (!hrtimer_hres_active())
+                return;
+
+        get_xtime_and_monotonic_and_sleep_offset(&xtim, &wtm, &sleep);
+        set_normalized_timespec(&realtime_offset, -wtm.tv_sec, -wtm.tv_nsec);
+
+        /* Adjust CLOCK_REALTIME offset */
+        raw_spin_lock(&base->lock);
+        base->clock_base[HRTIMER_BASE_REALTIME].offset =
+                timespec_to_ktime(realtime_offset);
+        base->clock_base[HRTIMER_BASE_BOOTTIME].offset =
+                timespec_to_ktime(sleep);
+
+        hrtimer_force_reprogram(base, 0);
+        raw_spin_unlock(&base->lock);
+}
+
+/*
+ * Clock realtime was set
+ *
+ * Change the offset of the realtime clock vs. the monotonic
+ * clock.
+ *
+ * We might have to reprogram the high resolution timer interrupt. On
+ * SMP we call the architecture specific code to retrigger _all_ high
+ * resolution timer interrupts. On UP we just disable interrupts and
+ * call the high resolution interrupt code.
+ */
+void clock_was_set(void)
+{
+        /* Retrigger the CPU local events everywhere */
+        on_each_cpu(retrigger_next_event, NULL, 1);
+}
+
+/*
+ * During resume we might have to reprogram the high resolution timer
+ * interrupt (on the local CPU):
+ */
+void hrtimers_resume(void)
+{
+        WARN_ONCE(!irqs_disabled(),
+                  KERN_INFO "hrtimers_resume() called with IRQs enabled!");
+
+        retrigger_next_event(NULL);
+}
+
 static inline void timer_stats_hrtimer_set_start_info(struct hrtimer *timer)
 {
 #ifdef CONFIG_TIMER_STATS
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 8e6a05a5915a..a61b8fa2d39a 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -680,7 +680,7 @@ static void timekeeping_resume(void)
         clockevents_notify(CLOCK_EVT_NOTIFY_RESUME, NULL);
 
         /* Resume hrtimers */
-        hres_timers_resume();
+        hrtimers_resume();
 }
 
 static int timekeeping_suspend(void)