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diff --git a/share/man/man9/cpuset.9 b/share/man/man9/cpuset.9
--- a/share/man/man9/cpuset.9
+++ b/share/man/man9/cpuset.9
@@ -50,8 +50,10 @@
.Nm CPU_ANDNOT ,
.Nm CPU_XOR ,
.Nm CPU_CLR_ATOMIC ,
+.Nm CPU_TEST_CLR_ATOMIC ,
.Nm CPU_SET_ATOMIC ,
.Nm CPU_SET_ATOMIC_ACQ ,
+.Nm CPU_TEST_SET_ATOMIC ,
.Nm CPU_AND_ATOMIC ,
.Nm CPU_OR_ATOMIC ,
.Nm CPU_COPY_STORE_REL
@@ -93,8 +95,10 @@
.Fn CPU_XOR "cpuset_t *dst" "cpuset_t *src1" "cpuset_t *src2"
.\"
.Fn CPU_CLR_ATOMIC "size_t cpu_idx" "cpuset_t *cpuset"
+.Fn CPU_TEST_CLR_ATOMIC "size_t cpu_idx" "cpuset_t *cpuset"
.Fn CPU_SET_ATOMIC "size_t cpu_idx" "cpuset_t *cpuset"
.Fn CPU_SET_ATOMIC_ACQ "size_t cpu_idx" "cpuset_t *cpuset"
+.Fn CPU_TEST_SET_ATOMIC "size_t cpu_idx" "cpuset_t *cpuset"
.\"
.Fn CPU_AND_ATOMIC "cpuset_t *dst" "cpuset_t *src"
.Fn CPU_OR_ATOMIC "cpuset_t *dst" "cpuset_t *src"
@@ -143,6 +147,10 @@
.Fn CPU_CLR_ATOMIC
macro is identical, but the bit representing the CPU is cleared with atomic
machine instructions.
+The
+.Fn CPU_TEST_CLR_ATOMIC
+macro atomically clears the bit representing the CPU and returns whether it
+was set.
.Pp
The
.Fn CPU_COPY
@@ -176,6 +184,10 @@
The
.Fn CPU_SET_ATOMIC_ACQ
macro sets the bit representing the CPU with atomic acquire semantics.
+The
+.Fn CPU_TEST_SET_ATOMIC
+macro atomically sets the bit representing the CPU and returns whether it was
+set.
.Pp
The
.Fn CPU_ISSET
diff --git a/sys/sys/cpuset.h b/sys/sys/cpuset.h
--- a/sys/sys/cpuset.h
+++ b/sys/sys/cpuset.h
@@ -61,8 +61,10 @@
#define CPU_ANDNOT(d, s1, s2) __BIT_ANDNOT2(CPU_SETSIZE, d, s1, s2)
#define CPU_XOR(d, s1, s2) __BIT_XOR2(CPU_SETSIZE, d, s1, s2)
#define CPU_CLR_ATOMIC(n, p) __BIT_CLR_ATOMIC(CPU_SETSIZE, n, p)
+#define CPU_TEST_CLR_ATOMIC(n, p) __BIT_TEST_CLR_ATOMIC(CPU_SETSIZE, n, p)
#define CPU_SET_ATOMIC(n, p) __BIT_SET_ATOMIC(CPU_SETSIZE, n, p)
#define CPU_SET_ATOMIC_ACQ(n, p) __BIT_SET_ATOMIC_ACQ(CPU_SETSIZE, n, p)
+#define CPU_TEST_SET_ATOMIC(n, p) __BIT_TEST_SET_ATOMIC(CPU_SETSIZE, n, p)
#define CPU_AND_ATOMIC(n, p) __BIT_AND_ATOMIC(CPU_SETSIZE, n, p)
#define CPU_OR_ATOMIC(d, s) __BIT_OR_ATOMIC(CPU_SETSIZE, d, s)
#define CPU_COPY_STORE_REL(f, t) __BIT_COPY_STORE_REL(CPU_SETSIZE, f, t)

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