diff --git a/sys/compat/linuxkpi/common/include/linux/time.h b/sys/compat/linuxkpi/common/include/linux/time.h
index c7a41a83f4aa..2b69ec46935c 100644
--- a/sys/compat/linuxkpi/common/include/linux/time.h
+++ b/sys/compat/linuxkpi/common/include/linux/time.h
@@ -1,135 +1,137 @@
 /*-
  * Copyright (c) 2014-2015 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 _LINUXKPI_LINUX_TIME_H_
 #define	_LINUXKPI_LINUX_TIME_H_
 
+#define	MSEC_PER_SEC	1000L
+
 #define	NSEC_PER_USEC	1000L
 #define	NSEC_PER_MSEC	1000000L
 #define	NSEC_PER_SEC	1000000000L
 
 #define	USEC_PER_MSEC	1000L
 #define	USEC_PER_SEC	1000000L
 
 #define	timespec64 timespec
 
 #include <sys/time.h>
 #include <sys/stdint.h>
 
 static inline struct timeval
 ns_to_timeval(const int64_t nsec)
 {
 	struct timeval tv;
 	long rem;
 
 	if (nsec == 0) {
 		tv.tv_sec = 0;
 		tv.tv_usec = 0;
 		return (tv);
 	}
 
 	tv.tv_sec = nsec / NSEC_PER_SEC;
 	rem = nsec % NSEC_PER_SEC;
 	if (rem < 0) {
 		tv.tv_sec--;
 		rem += NSEC_PER_SEC;
 	}
 	tv.tv_usec = rem / 1000;
 	return (tv);
 }
 
 static inline int64_t
 timeval_to_ns(const struct timeval *tv)
 {
 	return ((int64_t)tv->tv_sec * NSEC_PER_SEC) +
 		tv->tv_usec * NSEC_PER_USEC;
 }
 
 #define getrawmonotonic(ts)	nanouptime(ts)
 
 static inline struct timespec
 timespec_sub(struct timespec lhs, struct timespec rhs)
 {
 	struct timespec ts;
 
 	timespecsub(&lhs, &rhs, &ts);
 
 	return ts;
 }
 
 static inline void
 set_normalized_timespec(struct timespec *ts, time_t sec, int64_t nsec)
 {
 	/* XXX: this doesn't actually normalize anything */
 	ts->tv_sec = sec;
 	ts->tv_nsec = nsec;
 }
 
 static inline int64_t
 timespec_to_ns(const struct timespec *ts)
 {
 	return ((ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec);
 }
 
 static inline struct timespec
 ns_to_timespec(const int64_t nsec)
 {
 	struct timespec ts;
 	int32_t rem;
 
 	if (nsec == 0) {
 		ts.tv_sec = 0;
 		ts.tv_nsec = 0;
 		return (ts);
 	}
 
 	ts.tv_sec = nsec / NSEC_PER_SEC;
 	rem = nsec % NSEC_PER_SEC;
 	if (rem < 0) {
 		ts.tv_sec--;
 		rem += NSEC_PER_SEC;
 	}
 	ts.tv_nsec = rem;
 	return (ts);
 }
 
 static inline int
 timespec_valid(const struct timespec *ts)
 {
 	if (ts->tv_sec < 0 || ts->tv_sec > 100000000 ||
 	    ts->tv_nsec < 0 || ts->tv_nsec >= 1000000000)
 		return (0);
 	return (1);
 }
 
 static inline unsigned long
 get_seconds(void)
 {
 	return time_uptime;
 }
 
 #endif /* _LINUXKPI_LINUX_TIME_H_ */