diff --git a/include/linux/timer.h b/include/linux/timer.h
new file mode 100644
index 0000000..d35334d
--- /dev/null
+++ b/include/linux/timer.h
@@ -0,0 +1,260 @@
+#ifndef _LINUX_TIMER_H
+#define _LINUX_TIMER_H
+
+#include <linux/list.h>
+#include <linux/ktime.h>
+#include <linux/stddef.h>
+#include <linux/debugobjects.h>
+#include <linux/stringify.h>
+
+struct tvec_base;
+
+struct timer_list {
+	struct list_head entry;
+	unsigned long expires;
+	struct tvec_base *base;
+
+	void (*function)(unsigned long);
+	unsigned long data;
+
+	int slack;
+
+#ifdef CONFIG_TIMER_STATS
+	int start_pid;
+	void *start_site;
+	char start_comm[16];
+#endif
+#ifdef CONFIG_LOCKDEP
+	struct lockdep_map lockdep_map;
+#endif
+};
+
+extern struct tvec_base boot_tvec_bases;
+
+#ifdef CONFIG_LOCKDEP
+#define __TIMER_LOCKDEP_MAP_INITIALIZER(_kn)				\
+	.lockdep_map = STATIC_LOCKDEP_MAP_INIT(_kn, &_kn),
+#else
+#define __TIMER_LOCKDEP_MAP_INITIALIZER(_kn)
+#endif
+
+#define TBASE_DEFERRABLE_FLAG		(0x1)
+
+#define TIMER_INITIALIZER(_function, _expires, _data) {		\
+		.entry = { .prev = TIMER_ENTRY_STATIC },	\
+		.function = (_function),			\
+		.expires = (_expires),				\
+		.data = (_data),				\
+		.base = &boot_tvec_bases,			\
+		.slack = -1,					\
+		__TIMER_LOCKDEP_MAP_INITIALIZER(		\
+			__FILE__ ":" __stringify(__LINE__))	\
+	}
+
+#define TBASE_MAKE_DEFERRED(ptr) ((struct tvec_base *)		\
+		  ((unsigned char *)(ptr) + TBASE_DEFERRABLE_FLAG))
+
+#define TIMER_DEFERRED_INITIALIZER(_function, _expires, _data) {\
+		.entry = { .prev = TIMER_ENTRY_STATIC },	\
+		.function = (_function),			\
+		.expires = (_expires),				\
+		.data = (_data),				\
+		.base = TBASE_MAKE_DEFERRED(&boot_tvec_bases),	\
+		__TIMER_LOCKDEP_MAP_INITIALIZER(		\
+			__FILE__ ":" __stringify(__LINE__))	\
+	}
+
+#define DEFINE_TIMER(_name, _function, _expires, _data)		\
+	struct timer_list _name =				\
+		TIMER_INITIALIZER(_function, _expires, _data)
+
+void init_timer_key(struct timer_list *timer,
+		    const char *name,
+		    struct lock_class_key *key);
+void init_timer_deferrable_key(struct timer_list *timer,
+			       const char *name,
+			       struct lock_class_key *key);
+
+#ifdef CONFIG_LOCKDEP
+#define init_timer(timer)						\
+	do {								\
+		static struct lock_class_key __key;			\
+		init_timer_key((timer), #timer, &__key);		\
+	} while (0)
+
+#define init_timer_deferrable(timer)					\
+	do {								\
+		static struct lock_class_key __key;			\
+		init_timer_deferrable_key((timer), #timer, &__key);	\
+	} while (0)
+
+#define init_timer_on_stack(timer)					\
+	do {								\
+		static struct lock_class_key __key;			\
+		init_timer_on_stack_key((timer), #timer, &__key);	\
+	} while (0)
+
+#define setup_timer(timer, fn, data)					\
+	do {								\
+		static struct lock_class_key __key;			\
+		setup_timer_key((timer), #timer, &__key, (fn), (data));\
+	} while (0)
+
+#define setup_timer_on_stack(timer, fn, data)				\
+	do {								\
+		static struct lock_class_key __key;			\
+		setup_timer_on_stack_key((timer), #timer, &__key,	\
+					 (fn), (data));			\
+	} while (0)
+#define setup_deferrable_timer_on_stack(timer, fn, data)		\
+	do {								\
+		static struct lock_class_key __key;			\
+		setup_deferrable_timer_on_stack_key((timer), #timer,	\
+						    &__key, (fn),	\
+						    (data));		\
+	} while (0)
+#else
+#define init_timer(timer)\
+	init_timer_key((timer), NULL, NULL)
+#define init_timer_deferrable(timer)\
+	init_timer_deferrable_key((timer), NULL, NULL)
+#define init_timer_on_stack(timer)\
+	init_timer_on_stack_key((timer), NULL, NULL)
+#define setup_timer(timer, fn, data)\
+	setup_timer_key((timer), NULL, NULL, (fn), (data))
+#define setup_timer_on_stack(timer, fn, data)\
+	setup_timer_on_stack_key((timer), NULL, NULL, (fn), (data))
+#define setup_deferrable_timer_on_stack(timer, fn, data)\
+	setup_deferrable_timer_on_stack_key((timer), NULL, NULL, (fn), (data))
+#endif
+
+#ifdef CONFIG_DEBUG_OBJECTS_TIMERS
+extern void init_timer_on_stack_key(struct timer_list *timer,
+				    const char *name,
+				    struct lock_class_key *key);
+extern void destroy_timer_on_stack(struct timer_list *timer);
+#else
+static inline void destroy_timer_on_stack(struct timer_list *timer) { }
+static inline void init_timer_on_stack_key(struct timer_list *timer,
+					   const char *name,
+					   struct lock_class_key *key)
+{
+	init_timer_key(timer, name, key);
+}
+#endif
+
+static inline void setup_timer_key(struct timer_list * timer,
+				const char *name,
+				struct lock_class_key *key,
+				void (*function)(unsigned long),
+				unsigned long data)
+{
+	timer->function = function;
+	timer->data = data;
+	init_timer_key(timer, name, key);
+}
+
+static inline void setup_timer_on_stack_key(struct timer_list *timer,
+					const char *name,
+					struct lock_class_key *key,
+					void (*function)(unsigned long),
+					unsigned long data)
+{
+	timer->function = function;
+	timer->data = data;
+	init_timer_on_stack_key(timer, name, key);
+}
+
+extern void setup_deferrable_timer_on_stack_key(struct timer_list *timer,
+						const char *name,
+						struct lock_class_key *key,
+						void (*function)(unsigned long),
+						unsigned long data);
+
+static inline int timer_pending(const struct timer_list * timer)
+{
+	return timer->entry.next != NULL;
+}
+
+extern void add_timer_on(struct timer_list *timer, int cpu);
+extern int del_timer(struct timer_list * timer);
+extern int mod_timer(struct timer_list *timer, unsigned long expires);
+extern int mod_timer_pending(struct timer_list *timer, unsigned long expires);
+extern int mod_timer_pinned(struct timer_list *timer, unsigned long expires);
+
+extern void set_timer_slack(struct timer_list *time, int slack_hz);
+
+#define TIMER_NOT_PINNED	0
+#define TIMER_PINNED		1
+#define NEXT_TIMER_MAX_DELTA	((1UL << 30) - 1)
+
+extern unsigned long get_next_timer_interrupt(unsigned long now);
+
+#ifdef CONFIG_TIMER_STATS
+
+extern int timer_stats_active;
+
+#define TIMER_STATS_FLAG_DEFERRABLE	0x1
+
+extern void init_timer_stats(void);
+
+extern void timer_stats_update_stats(void *timer, pid_t pid, void *startf,
+				     void *timerf, char *comm,
+				     unsigned int timer_flag);
+
+extern void __timer_stats_timer_set_start_info(struct timer_list *timer,
+					       void *addr);
+
+static inline void timer_stats_timer_set_start_info(struct timer_list *timer)
+{
+	if (likely(!timer_stats_active))
+		return;
+	__timer_stats_timer_set_start_info(timer, __builtin_return_address(0));
+}
+
+static inline void timer_stats_timer_clear_start_info(struct timer_list *timer)
+{
+	timer->start_site = NULL;
+}
+#else
+static inline void init_timer_stats(void)
+{
+}
+
+static inline void timer_stats_timer_set_start_info(struct timer_list *timer)
+{
+}
+
+static inline void timer_stats_timer_clear_start_info(struct timer_list *timer)
+{
+}
+#endif
+
+extern void add_timer(struct timer_list *timer);
+
+extern int try_to_del_timer_sync(struct timer_list *timer);
+
+#ifdef CONFIG_SMP
+  extern int del_timer_sync(struct timer_list *timer);
+#else
+# define del_timer_sync(t)		del_timer(t)
+#endif
+
+#define del_singleshot_timer_sync(t) del_timer_sync(t)
+
+extern void init_timers(void);
+extern void run_local_timers(void);
+struct hrtimer;
+extern enum hrtimer_restart it_real_fn(struct hrtimer *);
+
+unsigned long __round_jiffies(unsigned long j, int cpu);
+unsigned long __round_jiffies_relative(unsigned long j, int cpu);
+unsigned long round_jiffies(unsigned long j);
+unsigned long round_jiffies_relative(unsigned long j);
+
+unsigned long __round_jiffies_up(unsigned long j, int cpu);
+unsigned long __round_jiffies_up_relative(unsigned long j, int cpu);
+unsigned long round_jiffies_up(unsigned long j);
+unsigned long round_jiffies_up_relative(unsigned long j);
+
+#endif