diff --git a/sys/compat/linuxkpi/common/include/linux/math.h b/sys/compat/linuxkpi/common/include/linux/math.h
index fc4542c83f1f..dad7fa7fbe9c 100644
--- a/sys/compat/linuxkpi/common/include/linux/math.h
+++ b/sys/compat/linuxkpi/common/include/linux/math.h
@@ -1,67 +1,76 @@
 /*-
  * SPDX-License-Identifier: BSD-2-Clause
  *
  * Copyright (c) 2013-2015 Mellanox Technologies, Ltd.
  * Copyright (c) 2014-2015 François Tigeot
  * Copyright (c) 2016 Matt Macy <mmacy@FreeBSD.org>
  * Copyright (c) 2019 Johannes Lundberg <johalun@FreeBSD.org>
+ * Copyright (c) 2023 Serenity Cyber Security, LLC.
  *
  * 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, 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
  */
 
 #ifndef _LINUXKPI_LINUX_MATH_H_
 #define	_LINUXKPI_LINUX_MATH_H_
 
 #include <linux/types.h>
 
 /*
  * This looks more complex than it should be. But we need to
  * get the type for the ~ right in round_down (it needs to be
  * as wide as the result!), and we want to evaluate the macro
  * arguments just once each.
  */
 #define	__round_mask(x, y)	((__typeof__(x))((y)-1))
 #define	round_up(x, y)		((((x)-1) | __round_mask(x, y))+1)
 #define	round_down(x, y)	((x) & ~__round_mask(x, y))
 
 #define	DIV_ROUND_UP(x, n)	howmany(x, n)
 #define	DIV_ROUND_UP_ULL(x, n)	DIV_ROUND_UP((unsigned long long)(x), (n))
 #define	DIV_ROUND_DOWN_ULL(x, n) (((unsigned long long)(x) / (n)) * (n))
 
 #define	DIV_ROUND_CLOSEST(x, divisor)	(((x) + ((divisor) / 2)) / (divisor))
 #define	DIV_ROUND_CLOSEST_ULL(x, divisor) ({		\
 	__typeof(divisor) __d = (divisor);		\
 	unsigned long long __ret = (x) + (__d) / 2;	\
 	__ret /= __d;					\
 	__ret;						\
 })
 
+#if defined(LINUXKPI_VERSION) && LINUXKPI_VERSION >= 60600
+#define abs_diff(x, y) ({		\
+	__typeof(x) _x = (x);		\
+	__typeof(y) _y = (y);		\
+	_x > _y ? _x - _y : _y - _x;	\
+})
+#endif
+
 static inline uintmax_t
 mult_frac(uintmax_t x, uintmax_t multiplier, uintmax_t divisor)
 {
 	uintmax_t q = (x / divisor);
 	uintmax_t r = (x % divisor);
 
 	return ((q * multiplier) + ((r * multiplier) / divisor));
 }
 
 #endif /* _LINUXKPI_LINUX_MATH_H_ */