diff --git a/share/man/man9/atomic.9 b/share/man/man9/atomic.9
--- a/share/man/man9/atomic.9
+++ b/share/man/man9/atomic.9
@@ -22,7 +22,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd August 18, 2019
+.Dd February 24, 2021
 .Dt ATOMIC 9
 .Os
 .Sh NAME
@@ -31,6 +31,7 @@
 .Nm atomic_cmpset ,
 .Nm atomic_fcmpset ,
 .Nm atomic_fetchadd ,
+.Nm atomic_interrupt_fence
 .Nm atomic_load ,
 .Nm atomic_readandclear ,
 .Nm atomic_set ,
@@ -59,6 +60,8 @@
 .Fc
 .Ft <type>
 .Fn atomic_fetchadd_<type> "volatile <type> *p" "<type> v"
+.Ft void
+.Fn atomic_interrupt_fence "void"
 .Ft <type>
 .Fn atomic_load_[acq_]<type> "volatile <type> *p"
 .Ft <type>
@@ -292,6 +295,14 @@
 facilitate more efficient implementations of synchronization primitives.
 For example, they can be used to avoid executing a memory barrier until a
 memory access shows that some condition is satisfied.
+.Ss Interrupt Fence Operation
+The
+.Fn atomic_interrupt_fence()
+function establishes ordering between its call location and any interrupt
+handler executing on the same CPU.
+It is modelled after similar C11 function
+.Fn atomic_signal_fence() ,
+adapted for the kernel environment.
 .Ss Multiple Processors
 In multiprocessor systems, the atomicity of the atomic operations on memory
 depends on support for cache coherence in the underlying architecture.
diff --git a/sys/sys/atomic_common.h b/sys/sys/atomic_common.h
--- a/sys/sys/atomic_common.h
+++ b/sys/sys/atomic_common.h
@@ -78,4 +78,6 @@
 #define	atomic_load_consume_ptr(p)	\
     ((__typeof(*p)) atomic_load_acq_ptr((uintptr_t *)p))
 
+#define	atomic_interrupt_fence()	__compiler_membar()
+
 #endif