6 files changed, 60 insertions, 2 deletions

diff --git a/include/linux/alarmtimer.h b/include/linux/alarmtimer.h
new file mode 100644
index 000000000000..c5d6095b46f8
--- /dev/null
+++ b/include/linux/alarmtimer.h
@@ -0,0 +1,40 @@
+#ifndef _LINUX_ALARMTIMER_H
+#define _LINUX_ALARMTIMER_H
+
+#include <linux/time.h>
+#include <linux/hrtimer.h>
+#include <linux/timerqueue.h>
+#include <linux/rtc.h>
+
+enum alarmtimer_type {
+        ALARM_REALTIME,
+        ALARM_BOOTTIME,
+
+        ALARM_NUMTYPE,
+};
+
+/**
+ * struct alarm - Alarm timer structure
+ * @node:       timerqueue node for adding to the event list this value
+ *              also includes the expiration time.
+ * @period:     Period for recuring alarms
+ * @function:   Function pointer to be executed when the timer fires.
+ * @type:       Alarm type (BOOTTIME/REALTIME)
+ * @enabled:    Flag that represents if the alarm is set to fire or not
+ * @data:       Internal data value.
+ */
+struct alarm {
+        struct timerqueue_node  node;
+        ktime_t                 period;
+        void                    (*function)(struct alarm *);
+        enum alarmtimer_type    type;
+        bool                    enabled;
+        void                    *data;
+};
+
+void alarm_init(struct alarm *alarm, enum alarmtimer_type type,
+                void (*function)(struct alarm *));
+void alarm_start(struct alarm *alarm, ktime_t start, ktime_t period);
+void alarm_cancel(struct alarm *alarm);
+
+#endif
diff --git a/include/linux/capability.h b/include/linux/capability.h
index d4675af963fa..4554db0cde86 100644
--- a/include/linux/capability.h
+++ b/include/linux/capability.h
@@ -355,7 +355,12 @@ struct cpu_vfs_cap_data {
 
 #define CAP_SYSLOG           34
 
-#define CAP_LAST_CAP         CAP_SYSLOG
+/* Allow triggering something that will wake the system */
+
+#define CAP_WAKE_ALARM            35
+
+
+#define CAP_LAST_CAP         CAP_WAKE_ALARM
 
 #define cap_valid(x) ((x) >= 0 && (x) <= CAP_LAST_CAP)
 
diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h
index d51243ae0726..808227d40a64 100644
--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@@ -5,6 +5,7 @@
 #include <linux/list.h>
 #include <linux/sched.h>
 #include <linux/timex.h>
+#include <linux/alarmtimer.h>
 
 union cpu_time_count {
         cputime_t cpu;
@@ -80,6 +81,7 @@ struct k_itimer {
                         unsigned long incr;
                         unsigned long expires;
                 } mmtimer;
+                struct alarm alarmtimer;
         } it;
 };
 
diff --git a/include/linux/rbtree.h b/include/linux/rbtree.h
index 7066acb2c530..033b507b33b1 100644
--- a/include/linux/rbtree.h
+++ b/include/linux/rbtree.h
@@ -136,6 +136,14 @@ static inline void rb_set_color(struct rb_node *rb, int color)
 #define RB_EMPTY_NODE(node)     (rb_parent(node) == node)
 #define RB_CLEAR_NODE(node)     (rb_set_parent(node, node))
 
+static inline void rb_init_node(struct rb_node *rb)
+{
+        rb->rb_parent_color = 0;
+        rb->rb_right = NULL;
+        rb->rb_left = NULL;
+        RB_CLEAR_NODE(rb);
+}
+
 extern void rb_insert_color(struct rb_node *, struct rb_root *);
 extern void rb_erase(struct rb_node *, struct rb_root *);
 
diff --git a/include/linux/time.h b/include/linux/time.h
index 454a26205787..b3061782dec3 100644
--- a/include/linux/time.h
+++ b/include/linux/time.h
@@ -126,6 +126,7 @@ struct timespec __current_kernel_time(void); /* does not take xtime_lock */
 struct timespec get_monotonic_coarse(void);
 void get_xtime_and_monotonic_and_sleep_offset(struct timespec *xtim,
                                 struct timespec *wtom, struct timespec *sleep);
+void timekeeping_inject_sleeptime(struct timespec *delta);
 
 #define CURRENT_TIME            (current_kernel_time())
 #define CURRENT_TIME_SEC        ((struct timespec) { get_seconds(), 0 })
@@ -294,6 +295,8 @@ struct itimerval {
 #define CLOCK_REALTIME_COARSE           5
 #define CLOCK_MONOTONIC_COARSE          6
 #define CLOCK_BOOTTIME                  7
+#define CLOCK_REALTIME_ALARM            8
+#define CLOCK_BOOTTIME_ALARM            9
 
 /*
  * The IDs of various hardware clocks:
diff --git a/include/linux/timerqueue.h b/include/linux/timerqueue.h
index a520fd70a59f..5088727478fd 100644
--- a/include/linux/timerqueue.h
+++ b/include/linux/timerqueue.h
@@ -39,7 +39,7 @@ struct timerqueue_node *timerqueue_getnext(struct timerqueue_head *head)
 
 static inline void timerqueue_init(struct timerqueue_node *node)
 {
-        RB_CLEAR_NODE(&node->node);
+        rb_init_node(&node->node);
 }
 
 static inline void timerqueue_init_head(struct timerqueue_head *head)