1 files changed, 102 insertions, 0 deletions

diff --git a/include/linux/timer.h b/include/linux/timer.h
new file mode 100644
index 000000000000..90db1cc62ddd
--- /dev/null
+++ b/include/linux/timer.h
@@ -0,0 +1,102 @@
+#ifndef _LINUX_TIMER_H
+#define _LINUX_TIMER_H
+
+#include <linux/config.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/stddef.h>
+
+struct tvec_t_base_s;
+
+struct timer_list {
+        struct list_head entry;
+        unsigned long expires;
+
+        spinlock_t lock;
+        unsigned long magic;
+
+        void (*function)(unsigned long);
+        unsigned long data;
+
+        struct tvec_t_base_s *base;
+};
+
+#define TIMER_MAGIC     0x4b87ad6e
+
+#define TIMER_INITIALIZER(_function, _expires, _data) {         \
+                .function = (_function),                        \
+                .expires = (_expires),                          \
+                .data = (_data),                                \
+                .base = NULL,                                   \
+                .magic = TIMER_MAGIC,                           \
+                .lock = SPIN_LOCK_UNLOCKED,                     \
+        }
+
+/***
+ * init_timer - initialize a timer.
+ * @timer: the timer to be initialized
+ *
+ * init_timer() must be done to a timer prior calling *any* of the
+ * other timer functions.
+ */
+static inline void init_timer(struct timer_list * timer)
+{
+        timer->base = NULL;
+        timer->magic = TIMER_MAGIC;
+        spin_lock_init(&timer->lock);
+}
+
+/***
+ * timer_pending - is a timer pending?
+ * @timer: the timer in question
+ *
+ * timer_pending will tell whether a given timer is currently pending,
+ * or not. Callers must ensure serialization wrt. other operations done
+ * to this timer, eg. interrupt contexts, or other CPUs on SMP.
+ *
+ * return value: 1 if the timer is pending, 0 if not.
+ */
+static inline int timer_pending(const struct timer_list * timer)
+{
+        return timer->base != 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(struct timer_list *timer, unsigned long expires);
+
+extern unsigned long next_timer_interrupt(void);
+
+/***
+ * add_timer - start a timer
+ * @timer: the timer to be added
+ *
+ * The kernel will do a ->function(->data) callback from the
+ * timer interrupt at the ->expired point in the future. The
+ * current time is 'jiffies'.
+ *
+ * The timer's ->expired, ->function (and if the handler uses it, ->data)
+ * fields must be set prior calling this function.
+ *
+ * Timers with an ->expired field in the past will be executed in the next
+ * timer tick.
+ */
+static inline void add_timer(struct timer_list * timer)
+{
+        __mod_timer(timer, timer->expires);
+}
+
+#ifdef CONFIG_SMP
+  extern int del_timer_sync(struct timer_list *timer);
+  extern int del_singleshot_timer_sync(struct timer_list *timer);
+#else
+# define del_timer_sync(t) del_timer(t)
+# define del_singleshot_timer_sync(t) del_timer(t)
+#endif
+
+extern void init_timers(void);
+extern void run_local_timers(void);
+extern void it_real_fn(unsigned long);
+
+#endif