1 files changed, 65 insertions, 0 deletions

diff --git a/arch/s390/include/asm/timer.h b/arch/s390/include/asm/timer.h
new file mode 100644
index 000000000000..d98d79e35cd6
--- /dev/null
+++ b/arch/s390/include/asm/timer.h
@@ -0,0 +1,65 @@
+/*
+ *  include/asm-s390/timer.h
+ *
+ *  (C) Copyright IBM Corp. 2003,2006
+ *  Virtual CPU timer
+ *
+ *  Author: Jan Glauber (jang@de.ibm.com)
+ */
+
+#ifndef _ASM_S390_TIMER_H
+#define _ASM_S390_TIMER_H
+
+#ifdef __KERNEL__
+
+#include <linux/timer.h>
+
+#define VTIMER_MAX_SLICE (0x7ffffffffffff000LL)
+
+struct vtimer_list {
+        struct list_head entry;
+
+        int cpu;
+        __u64 expires;
+        __u64 interval;
+
+        spinlock_t lock;
+        unsigned long magic;
+
+        void (*function)(unsigned long);
+        unsigned long data;
+};
+
+/* the offset value will wrap after ca. 71 years */
+struct vtimer_queue {
+        struct list_head list;
+        spinlock_t lock;
+        __u64 to_expire;          /* current event expire time */
+        __u64 offset;             /* list offset to zero */
+        __u64 idle;               /* temp var for idle */
+};
+
+extern void init_virt_timer(struct vtimer_list *timer);
+extern void add_virt_timer(void *new);
+extern void add_virt_timer_periodic(void *new);
+extern int mod_virt_timer(struct vtimer_list *timer, __u64 expires);
+extern int del_virt_timer(struct vtimer_list *timer);
+
+extern void init_cpu_vtimer(void);
+extern void vtime_init(void);
+
+#ifdef CONFIG_VIRT_TIMER
+
+extern void vtime_start_cpu_timer(void);
+extern void vtime_stop_cpu_timer(void);
+
+#else
+
+static inline void vtime_start_cpu_timer(void) { }
+static inline void vtime_stop_cpu_timer(void) { }
+
+#endif /* CONFIG_VIRT_TIMER */
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_S390_TIMER_H */