diff --git a/sys/compat/linuxkpi/common/include/linux/ktime.h b/sys/compat/linuxkpi/common/include/linux/ktime.h
index e480de3181a9..1475674a12e6 100644
--- a/sys/compat/linuxkpi/common/include/linux/ktime.h
+++ b/sys/compat/linuxkpi/common/include/linux/ktime.h
@@ -1,259 +1,266 @@
 /*-
  * Copyright (c) 2018 Limelight Networks, Inc.
  * Copyright (c) 2014-2018 Mellanox Technologies, Ltd.
  * Copyright (c) 2015 François Tigeot
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice unmodified, this list of conditions, and the following
  *    disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * $FreeBSD$
  */
 
 #ifndef _LINUX_KTIME_H
 #define	_LINUX_KTIME_H
 
 #include <linux/types.h>
 #include <linux/time.h>
 #include <linux/jiffies.h>
 
 /* time values in nanoseconds */
 typedef s64 ktime_t;
 
 #define	KTIME_MAX			((s64)~((u64)1 << 63))
 #define	KTIME_SEC_MAX			(KTIME_MAX / NSEC_PER_SEC)
 
 static inline int64_t
 ktime_to_ns(ktime_t kt)
 {
 	return (kt);
 }
 
 static inline ktime_t
 ns_to_ktime(uint64_t nsec)
 {
 	return (nsec);
 }
 
 static inline int64_t
 ktime_divns(const ktime_t kt, int64_t div)
 {
 	return (kt / div);
 }
 
 static inline int64_t
 ktime_to_us(ktime_t kt)
 {
 	return (ktime_divns(kt, NSEC_PER_USEC));
 }
 
 static inline int64_t
 ktime_to_ms(ktime_t kt)
 {
 	return (ktime_divns(kt, NSEC_PER_MSEC));
 }
 
 static inline struct timeval
 ktime_to_timeval(ktime_t kt)
 {
 	return (ns_to_timeval(kt));
 }
 
 static inline ktime_t
 ktime_add_ns(ktime_t kt, int64_t ns)
 {
 	return (kt + ns);
 }
 
 static inline ktime_t
 ktime_add_ms(ktime_t kt, int64_t ms)
 {
 
 	return (ktime_add_ns(kt, ms * NSEC_PER_MSEC));
 }
 
 static inline ktime_t
 ktime_add_us(ktime_t kt, int64_t us)
 {
 
 	return (ktime_add_ns(kt, us * NSEC_PER_USEC));
 }
 
 static inline ktime_t
 ktime_sub_ns(ktime_t kt, int64_t ns)
 {
 	return (kt - ns);
 }
 
 static inline ktime_t
 ktime_set(const long secs, const unsigned long nsecs)
 {
 	ktime_t retval = {(s64) secs * NSEC_PER_SEC + (s64) nsecs};
 
 	return (retval);
 }
 
 static inline ktime_t
 ktime_sub(ktime_t lhs, ktime_t rhs)
 {
 	return (lhs - rhs);
 }
 
 static inline int64_t
 ktime_us_delta(ktime_t later, ktime_t earlier)
 {
 	ktime_t diff = ktime_sub(later, earlier);
 
 	return (ktime_to_us(diff));
 }
 
 static inline int64_t
 ktime_ms_delta(ktime_t later, ktime_t earlier)
 {
 	ktime_t diff = ktime_sub(later, earlier);
 
 	return (ktime_to_ms(diff));
 }
 
 static inline ktime_t
 ktime_add(ktime_t lhs, ktime_t rhs)
 {
 	return (lhs + rhs);
 }
 
 static inline int
 ktime_compare(const ktime_t cmp1, const ktime_t cmp2)
 {
 
 	if (cmp1 > cmp2)
 		return (1);
 	else if (cmp1 < cmp2)
 		return (-1);
 	else
 		return (0);
 }
 
 static inline bool
 ktime_after(const ktime_t cmp1, const ktime_t cmp2)
 {
 
 	return (ktime_compare(cmp1, cmp2) > 0);
 }
 
 static inline bool
 ktime_before(const ktime_t cmp1, const ktime_t cmp2)
 {
 
 	return (ktime_compare(cmp1, cmp2) < 0);
 }
 
 static inline ktime_t
 timespec_to_ktime(struct timespec ts)
 {
 	return (ktime_set(ts.tv_sec, ts.tv_nsec));
 }
 
 static inline ktime_t
 timeval_to_ktime(struct timeval tv)
 {
 	return (ktime_set(tv.tv_sec, tv.tv_usec * NSEC_PER_USEC));
 }
 
 static inline int64_t
 timespec64_to_ns(struct timespec64 *ts)
 {
 	return (timespec_to_ns(ts));
 }
 
 #define	ktime_to_timespec(kt)		ns_to_timespec(kt)
 #define	ktime_to_timespec64(kt)		ns_to_timespec(kt)
 #define	ktime_to_timeval(kt)		ns_to_timeval(kt)
 #define	ktime_to_ns(kt)			(kt)
 #define	ktime_get_ts(ts)		getnanouptime(ts)
 #define	ktime_get_ts64(ts)		getnanouptime(ts)
 #define	ktime_get_raw_ts64(ts)		getnanouptime(ts)
 #define	getrawmonotonic64(ts)		getnanouptime(ts)
 
 static inline int64_t
 ktime_get_ns(void)
 {
 	struct timespec ts;
 
 	ktime_get_ts(&ts);
 
 	return (ktime_to_ns(timespec_to_ktime(ts)));
 }
 
 static inline ktime_t
 ktime_get(void)
 {
 	struct timespec ts;
 
 	ktime_get_ts(&ts);
 	return (timespec_to_ktime(ts));
 }
 
 static inline ktime_t
 ktime_get_boottime(void)
 {
 	struct timespec ts;
 
 	nanouptime(&ts);
 	return (timespec_to_ktime(ts));
 }
 
+static inline uint64_t
+ktime_get_boottime_ns(void)
+{
+
+	return (ktime_to_ns(ktime_get_boottime()));
+}
+
 static inline ktime_t
 ktime_get_real(void)
 {
 	struct timespec ts;
 
 	nanotime(&ts);
 	return (timespec_to_ktime(ts));
 }
 
 static inline ktime_t
 ktime_get_real_seconds(void)
 {
 	struct timespec ts;
 
 	nanotime(&ts);
 	return (ts.tv_sec);
 }
 
 static inline ktime_t
 ktime_get_raw(void)
 {
 	struct timespec ts;
 
 	nanouptime(&ts);
 	return (timespec_to_ktime(ts));
 }
 
 static inline u64
 ktime_get_raw_ns(void)
 {
 	struct timespec ts;
 
 	nanouptime(&ts);
 	return (ktime_to_ns(timespec_to_ktime(ts)));
 }
 
 #endif /* _LINUX_KTIME_H */