9 files changed, 61 insertions, 15 deletions

diff --git a/include/linux/alarmtimer.h b/include/linux/alarmtimer.h
index 9069694e70eb..a899402a5a0e 100644
--- a/include/linux/alarmtimer.h
+++ b/include/linux/alarmtimer.h
@@ -44,10 +44,14 @@ struct alarm {
 void alarm_init(struct alarm *alarm, enum alarmtimer_type type,
                 enum alarmtimer_restart (*function)(struct alarm *, ktime_t));
 int alarm_start(struct alarm *alarm, ktime_t start);
+int alarm_start_relative(struct alarm *alarm, ktime_t start);
+void alarm_restart(struct alarm *alarm);
 int alarm_try_to_cancel(struct alarm *alarm);
 int alarm_cancel(struct alarm *alarm);
 
 u64 alarm_forward(struct alarm *alarm, ktime_t now, ktime_t interval);
+u64 alarm_forward_now(struct alarm *alarm, ktime_t interval);
+ktime_t alarm_expires_remaining(const struct alarm *alarm);
 
 /* Provide way to access the rtc device being used by alarmtimers */
 struct rtc_device *alarmtimer_get_rtcdev(void);
diff --git a/include/linux/clockchips.h b/include/linux/clockchips.h
index 963d71431388..0857922e8ad0 100644
--- a/include/linux/clockchips.h
+++ b/include/linux/clockchips.h
@@ -30,6 +30,7 @@ enum clock_event_nofitiers {
 #include <linux/notifier.h>
 
 struct clock_event_device;
+struct module;
 
 /* Clock event mode commands */
 enum clock_event_mode {
@@ -83,6 +84,7 @@ enum clock_event_mode {
  * @irq:                IRQ number (only for non CPU local devices)
  * @cpumask:            cpumask to indicate for which CPUs this device works
  * @list:               list head for the management code
+ * @owner:              module reference
  */
 struct clock_event_device {
         void                    (*event_handler)(struct clock_event_device *);
@@ -112,6 +114,7 @@ struct clock_event_device {
         int                     irq;
         const struct cpumask    *cpumask;
         struct list_head        list;
+        struct module           *owner;
 } ____cacheline_aligned;
 
 /*
@@ -138,6 +141,7 @@ static inline unsigned long div_sc(unsigned long ticks, unsigned long nsec,
 extern u64 clockevent_delta2ns(unsigned long latch,
                                struct clock_event_device *evt);
 extern void clockevents_register_device(struct clock_event_device *dev);
+extern int clockevents_unbind_device(struct clock_event_device *ced, int cpu);
 
 extern void clockevents_config(struct clock_event_device *dev, u32 freq);
 extern void clockevents_config_and_register(struct clock_event_device *dev,
@@ -150,7 +154,6 @@ extern void clockevents_exchange_device(struct clock_event_device *old,
                                         struct clock_event_device *new);
 extern void clockevents_set_mode(struct clock_event_device *dev,
                                  enum clock_event_mode mode);
-extern int clockevents_register_notifier(struct notifier_block *nb);
 extern int clockevents_program_event(struct clock_event_device *dev,
                                      ktime_t expires, bool force);
 
diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index 7279b94c01da..dbbf8aa7731b 100644
--- a/include/linux/clocksource.h
+++ b/include/linux/clocksource.h
@@ -21,6 +21,7 @@
 /* clocksource cycle base type */
 typedef u64 cycle_t;
 struct clocksource;
+struct module;
 
 #ifdef CONFIG_ARCH_CLOCKSOURCE_DATA
 #include <asm/clocksource.h>
@@ -162,6 +163,7 @@ extern u64 timecounter_cyc2time(struct timecounter *tc,
  * @suspend:            suspend function for the clocksource, if necessary
  * @resume:             resume function for the clocksource, if necessary
  * @cycle_last:         most recent cycle counter value seen by ::read()
+ * @owner:              module reference, must be set by clocksource in modules
  */
 struct clocksource {
         /*
@@ -195,6 +197,7 @@ struct clocksource {
         cycle_t cs_last;
         cycle_t wd_last;
 #endif
+        struct module *owner;
 } ____cacheline_aligned;
 
 /*
@@ -207,6 +210,7 @@ struct clocksource {
 #define CLOCK_SOURCE_VALID_FOR_HRES             0x20
 #define CLOCK_SOURCE_UNSTABLE                   0x40
 #define CLOCK_SOURCE_SUSPEND_NONSTOP            0x80
+#define CLOCK_SOURCE_RESELECT                   0x100
 
 /* simplify initialization of mask field */
 #define CLOCKSOURCE_MASK(bits) (cycle_t)((bits) < 64 ? ((1ULL<<(bits))-1) : -1)
@@ -279,7 +283,7 @@ static inline s64 clocksource_cyc2ns(cycle_t cycles, u32 mult, u32 shift)
 
 
 extern int clocksource_register(struct clocksource*);
-extern void clocksource_unregister(struct clocksource*);
+extern int clocksource_unregister(struct clocksource*);
 extern void clocksource_touch_watchdog(void);
 extern struct clocksource* clocksource_get_next(void);
 extern void clocksource_change_rating(struct clocksource *cs, int rating);
@@ -321,7 +325,7 @@ static inline void __clocksource_updatefreq_khz(struct clocksource *cs, u32 khz)
 }
 
 
-extern void timekeeping_notify(struct clocksource *clock);
+extern int timekeeping_notify(struct clocksource *clock);
 
 extern cycle_t clocksource_mmio_readl_up(struct clocksource *);
 extern cycle_t clocksource_mmio_readl_down(struct clocksource *);
diff --git a/include/linux/dw_apb_timer.h b/include/linux/dw_apb_timer.h
index 07261d52a6df..1f79b20918b1 100644
--- a/include/linux/dw_apb_timer.h
+++ b/include/linux/dw_apb_timer.h
@@ -51,6 +51,5 @@ dw_apb_clocksource_init(unsigned rating, const char *name, void __iomem *base,
 void dw_apb_clocksource_register(struct dw_apb_clocksource *dw_cs);
 void dw_apb_clocksource_start(struct dw_apb_clocksource *dw_cs);
 cycle_t dw_apb_clocksource_read(struct dw_apb_clocksource *dw_cs);
-void dw_apb_clocksource_unregister(struct dw_apb_clocksource *dw_cs);
 
 #endif /* __DW_APB_TIMER_H__ */
diff --git a/include/linux/efi.h b/include/linux/efi.h
index 21ae6b3c0359..5f8f176154f7 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -594,8 +594,8 @@ extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size);
 extern int __init efi_uart_console_only (void);
 extern void efi_initialize_iomem_resources(struct resource *code_resource,
                 struct resource *data_resource, struct resource *bss_resource);
-extern unsigned long efi_get_time(void);
-extern int efi_set_rtc_mmss(unsigned long nowtime);
+extern void efi_get_time(struct timespec *now);
+extern int efi_set_rtc_mmss(const struct timespec *now);
 extern void efi_reserve_boot_services(void);
 extern struct efi_memory_map memmap;
 
diff --git a/include/linux/ktime.h b/include/linux/ktime.h
index bbca12804d12..fc66b301b648 100644
--- a/include/linux/ktime.h
+++ b/include/linux/ktime.h
@@ -229,7 +229,8 @@ static inline ktime_t timespec_to_ktime(const struct timespec ts)
 static inline ktime_t timeval_to_ktime(const struct timeval tv)
 {
         return (ktime_t) { .tv = { .sec = (s32)tv.tv_sec,
-                                   .nsec = (s32)tv.tv_usec * 1000 } };
+                                   .nsec = (s32)(tv.tv_usec *
+                                                 NSEC_PER_USEC) } };
 }
 
 /**
@@ -320,12 +321,12 @@ static inline s64 ktime_us_delta(const ktime_t later, const ktime_t earlier)
 
 static inline ktime_t ktime_add_us(const ktime_t kt, const u64 usec)
 {
-        return ktime_add_ns(kt, usec * 1000);
+        return ktime_add_ns(kt, usec * NSEC_PER_USEC);
 }
 
 static inline ktime_t ktime_sub_us(const ktime_t kt, const u64 usec)
 {
-        return ktime_sub_ns(kt, usec * 1000);
+        return ktime_sub_ns(kt, usec * NSEC_PER_USEC);
 }
 
 extern ktime_t ktime_add_safe(const ktime_t lhs, const ktime_t rhs);
@@ -338,7 +339,8 @@ extern ktime_t ktime_add_safe(const ktime_t lhs, const ktime_t rhs);
  *
  * Returns true if there was a successful conversion, false if kt was 0.
  */
-static inline bool ktime_to_timespec_cond(const ktime_t kt, struct timespec *ts)
+static inline __must_check bool ktime_to_timespec_cond(const ktime_t kt,
+                                                       struct timespec *ts)
 {
         if (kt.tv64) {
                 *ts = ktime_to_timespec(kt);
diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h
index 7794d75ed155..907f3fd191ac 100644
--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@@ -7,14 +7,20 @@
 #include <linux/timex.h>
 #include <linux/alarmtimer.h>
 
-union cpu_time_count {
-        cputime_t cpu;
-        unsigned long long sched;
-};
+
+static inline unsigned long long cputime_to_expires(cputime_t expires)
+{
+        return (__force unsigned long long)expires;
+}
+
+static inline cputime_t expires_to_cputime(unsigned long long expires)
+{
+        return (__force cputime_t)expires;
+}
 
 struct cpu_timer_list {
         struct list_head entry;
-        union cpu_time_count expires, incr;
+        unsigned long long expires, incr;
         struct task_struct *task;
         int firing;
 };
diff --git a/include/linux/pvclock_gtod.h b/include/linux/pvclock_gtod.h
index 0ca75825b60d..a71d2dbd3610 100644
--- a/include/linux/pvclock_gtod.h
+++ b/include/linux/pvclock_gtod.h
@@ -3,6 +3,13 @@
 
 #include <linux/notifier.h>
 
+/*
+ * The pvclock gtod notifier is called when the system time is updated
+ * and is used to keep guest time synchronized with host time.
+ *
+ * The 'action' parameter in the notifier function is false (0), or
+ * true (non-zero) if system time was stepped.
+ */
 extern int pvclock_gtod_register_notifier(struct notifier_block *nb);
 extern int pvclock_gtod_unregister_notifier(struct notifier_block *nb);
 
diff --git a/include/linux/sched_clock.h b/include/linux/sched_clock.h
new file mode 100644
index 000000000000..fa7922c80a41
--- /dev/null
+++ b/include/linux/sched_clock.h
@@ -0,0 +1,21 @@
+/*
+ * sched_clock.h: support for extending counters to full 64-bit ns counter
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef LINUX_SCHED_CLOCK
+#define LINUX_SCHED_CLOCK
+
+#ifdef CONFIG_GENERIC_SCHED_CLOCK
+extern void sched_clock_postinit(void);
+#else
+static inline void sched_clock_postinit(void) { }
+#endif
+
+extern void setup_sched_clock(u32 (*read)(void), int bits, unsigned long rate);
+
+extern unsigned long long (*sched_clock_func)(void);
+
+#endif