diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index 903ecc10fcff..8ea3ca1b0ee5 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -27,7 +27,6 @@ struct timespec __current_kernel_time(void);
  */
 struct timespec get_monotonic_coarse(void);
 extern void getrawmonotonic(struct timespec *ts);
-extern void monotonic_to_bootbased(struct timespec *ts);
 extern void get_monotonic_boottime(struct timespec *ts);
 extern void ktime_get_ts64(struct timespec64 *ts);
 
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index f7378eaebe67..b35613508725 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -1570,21 +1570,6 @@ void get_monotonic_boottime(struct timespec *ts)
 }
 EXPORT_SYMBOL_GPL(get_monotonic_boottime);
 
-/**
- * monotonic_to_bootbased - Convert the monotonic time to boot based.
- * @ts:		pointer to the timespec to be converted
- */
-void monotonic_to_bootbased(struct timespec *ts)
-{
-	struct timekeeper *tk = &tk_core.timekeeper;
-	struct timespec64 ts64;
-
-	ts64 = timespec_to_timespec64(*ts);
-	ts64 = timespec64_add(ts64, tk->total_sleep_time);
-	*ts = timespec64_to_timespec(ts64);
-}
-EXPORT_SYMBOL_GPL(monotonic_to_bootbased);
-
 unsigned long get_seconds(void)
 {
 	struct timekeeper *tk = &tk_core.timekeeper;