#ifdef CONFIG_GENERIC_TIME_VSYSCALL
extern void update_vsyscall(struct timespec *ts, struct clocksource *c);
+extern void update_vsyscall_tz(void);
#else
static inline void update_vsyscall(struct timespec *ts, struct clocksource *c)
{
}
+
+static inline void update_vsyscall_tz(void)
+{
+}
#endif
#endif /* _LINUX_CLOCKSOURCE_H */