+typedef cpuset_t os_cpu_mask_t;
+
+#define fio_cpu_clear(mask, cpu) (void) CPU_CLR((cpu), (mask))
+#define fio_cpu_set(mask, cpu) (void) CPU_SET((cpu), (mask))
+#define fio_cpu_isset(mask, cpu) CPU_ISSET((cpu), (mask))
+#define fio_cpu_count(mask) CPU_COUNT((mask))
+
+static inline int fio_cpuset_init(os_cpu_mask_t *mask)
+{
+ CPU_ZERO(mask);
+ return 0;
+}
+
+static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
+{
+ return 0;
+}
+
+static inline int fio_setaffinity(int pid, os_cpu_mask_t cpumask)
+{
+ return cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, pid, sizeof(cpumask), &cpumask);
+}
+
+static inline int fio_getaffinity(int pid, os_cpu_mask_t *cpumask)
+{
+ return cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, pid, sizeof(cpumask), cpumask);
+}
+
+#define FIO_MAX_CPUS CPU_SETSIZE
+