If I execute "grep -R "NCPUS > 1", it returns this files ;)
kern/machine.c:#if NCPUS > 1
kern/machine.c:#endif /* NCPUS > 1 */
kern/machine.c:#if NCPUS > 1
kern/machine.c:#else /* NCPUS > 1 */
kern/machine.c:#endif /* NCPUS > 1 */
kern/processor.c:#if NCPUS > 1
kern/processor.c:#endif /* NCPUS > 1 */
kern/processor.c:#if NCPUS > 1
kern/processor.c:#else /* NCPUS > 1 */
kern/processor.c:#endif /* NCPUS > 1 */
kern/processor.c:#if NCPUS > 1
kern/processor.c:#else /* NCPUS > 1 */
kern/processor.c:#endif /* NCPUS > 1 */
kern/processor.c:#if NCPUS > 1
kern/processor.c:#else /* NCPUS > 1 */
kern/processor.c:#endif /* NCPUS > 1 */
kern/processor.c:#if NCPUS > 1
kern/processor.c:#else /* NCPUS > 1 */
kern/processor.c:#endif /* NCPUS > 1 */
kern/mach_clock.c:#if NCPUS > 1
kern/mach_clock.c:#endif /* NCPUS > 1 */
kern/mach_clock.c:#if NCPUS > 1
kern/mach_clock.c:#endif /* NCPUS > 1 */
kern/mach_clock.c:#if NCPUS > 1
kern/mach_clock.c:#endif /* NCPUS > 1 */
kern/mach_clock.c:#if NCPUS > 1
kern/mach_clock.c:#endif /* NCPUS > 1 */
kern/startup.c:#if NCPUS > 1
kern/startup.c:#endif /* NCPUS > 1 */
kern/startup.c:#if NCPUS > 1
kern/startup.c:#endif /* NCPUS > 1 */
kern/startup.c:#if NCPUS > 1
kern/startup.c:#endif /* NCPUS > 1 */
kern/ast.h:#if NCPUS > 1
kern/syscall_subr.c:#if NCPUS > 1
kern/syscall_subr.c:#endif /* NCPUS > 1 */
kern/syscall_subr.c:#if NCPUS > 1
kern/syscall_subr.c:#endif /* NCPUS > 1 */
kern/syscall_subr.c:#if NCPUS > 1
kern/syscall_subr.c:#endif /* NCPUS > 1 */
kern/sched_prim.c:#if NCPUS > 1
kern/sched_prim.c:#endif /* NCPUS > 1 */
kern/sched_prim.c:#if NCPUS > 1
kern/sched_prim.c:#endif /* NCPUS > 1 */
kern/sched_prim.c:#if NCPUS > 1
kern/sched_prim.c:#endif /* NCPUS > 1 */
kern/sched_prim.c:#if NCPUS > 1
kern/sched_prim.c:#else /* NCPUS > 1 */
kern/sched_prim.c:#endif /* NCPUS > 1 */
kern/processor.h:#if NCPUS > 1
kern/processor.h:#endif /* NCPUS > 1 */
kern/processor.h:#if NCPUS > 1
kern/processor.h:#endif /* NCPUS > 1 */
kern/processor.h:#if NCPUS > 1
kern/processor.h:#endif /* NCPUS > 1 */
kern/ast.c:#if NCPUS > 1
kern/ast.c:#endif /* NCPUS > 1 */
kern/thread.c:#if NCPUS > 1
kern/thread.c:#endif /* NCPUS > 1 */
kern/thread.c:#if NCPUS > 1
kern/thread.c:#endif /* NCPUS > 1 */
kern/eventcount.c:#if (NCPUS > 1)
kern/eventcount.c:#if NCPUS > 1
kern/eventcount.c:#if (NCPUS > 1)
kern/eventcount.c:#endif /* NCPUS > 1 */
kern/lock_mon.c:#if NCPUS > 1 && MACH_LOCK_MON
kern/lock_mon.c:#endif /* NCPUS > 1 && MACH_LOCK_MON */
kern/debug.c:#if NCPUS > 1
kern/debug.c:#if NCPUS > 1
kern/priority.c:#if NCPUS > 1
kern/priority.c:#if NCPUS > 1
kern/priority.c:#endif /* NCPUS > 1 */
kern/priority.c:#if NCPUS > 1
kern/priority.c:#else /* NCPUS > 1 */
kern/priority.c:#endif /* NCPUS > 1 */
kern/priority.c:#if NCPUS > 1
kern/priority.c:#endif /* NCPUS > 1 */
kern/ipc_sched.c:#if NCPUS > 1
kern/ipc_sched.c:#else /* NCPUS > 1 */
kern/ipc_sched.c:#endif /* NCPUS > 1 */
kern/ipc_sched.c:#if NCPUS > 1
kern/ipc_sched.c:#endif /* NCPUS > 1 */
kern/lock.h:#if NCPUS > 1
kern/lock.h:#define MACH_SLOCKS ((NCPUS > 1) || MACH_LDEBUG)
kern/lock.h:#if (NCPUS > 1)
kern/lock.h:#else /* NCPUS > 1 */
kern/lock.h:#endif /* NCPUS > 1 */
kern/lock.c:#if NCPUS > 1
kern/lock.c:#endif /* NCPUS > 1 */
kern/lock.c:#if NCPUS > 1
kern/lock.c:#else /* NCPUS > 1 */
kern/lock.c:#endif /* NCPUS > 1 */
kern/thread.h:#if NCPUS > 1
kern/thread.h:#endif /* NCPUS > 1 */
device/dev_master.h:#if NCPUS > 1
device/dev_master.h:#else NCPUS > 1
device/dev_master.h:#endif NCPUS > 1
i386/linux/dev/include/linux/autoconf.h:#if NCPUS > 1
i386/i386/ast_check.c:#if NCPUS > 1
i386/i386/ast_check.c:#endif /* NCPUS > 1 */
i386/i386/cswitch.S:#if NCPUS > 1
i386/i386/cswitch.S:#endif /* NCPUS > 1 */
i386/i386/spl.S:#if NCPUS > 1
i386/i386/db_interface.c:#if NCPUS > 1
i386/i386/db_interface.c:#endif /* NCPUS > 1 */
i386/i386/db_interface.c:#if NCPUS > 1
i386/i386/db_interface.c:#endif /* NCPUS > 1 */
i386/i386/db_interface.c:#if NCPUS > 1
i386/i386/db_interface.c:#endif /* NCPUS > 1 */
i386/i386/db_interface.c:#if NCPUS > 1
i386/i386/db_interface.c:#endif /* NCPUS > 1 */
i386/i386/pcb.c:#if NCPUS > 1
i386/i386/pcb.c:#if NCPUS > 1
i386/i386/fpu.h:#if NCPUS > 1
i386/i386/mp_desc.c:#if NCPUS > 1
i386/i386/mp_desc.c:#endif /* NCPUS > 1 */
i386/i386/fpu.c:#else /* NCPUS > 1 */
i386/i386/lock.h:#if NCPUS > 1
i386/i386/lock.h:#endif /* NCPUS > 1 */
i386/i386/cpu_number.h:#if NCPUS > 1
i386/intel/pmap.h:#if NCPUS > 1
i386/intel/pmap.h:#endif /* NCPUS > 1 */
i386/intel/pmap.h:#if NCPUS > 1
i386/intel/pmap.h:#else /* NCPUS > 1 */
i386/intel/pmap.h:#endif /* NCPUS > 1 */
i386/intel/pmap.h:#if NCPUS > 1
i386/intel/pmap.h:#endif /* NCPUS > 1 */
i386/intel/pmap.c:#if NCPUS > 1
i386/intel/pmap.c:#else /* NCPUS > 1 */
i386/intel/pmap.c:#endif /* NCPUS > 1 */
i386/intel/pmap.c:#if NCPUS > 1
i386/intel/pmap.c:#endif /* NCPUS > 1 */
i386/intel/pmap.c:#if NCPUS > 1
i386/intel/pmap.c:#endif /* NCPUS > 1 */
i386/intel/pmap.c:#if NCPUS > 1
i386/intel/pmap.c:#endif /* NCPUS > 1 */
i386/intel/pmap.c:#if NCPUS > 1
i386/intel/pmap.c:#endif /* NCPUS > 1 */
i386/intel/pmap.c:#if NCPUS > 1
i386/intel/pmap.c:#else /* NCPUS > 1 */
i386/intel/pmap.c:#endif /* NCPUS > 1 */
ddb/db_command.c:#if NCPUS > 1
ddb/db_mp.c:#if NCPUS > 1
ddb/db_mp.c:#endif /* NCPUS > 1 */