All symbols starting with 'n' in kern

• nchash kern/vfs_cache.c:67
• nchinit kern/vfs_cache.c:243
• newargs kern/vfs_syscalls.c:692
• nextc kern/tty_ring.c:88
• nosys kern/kern_sig.c:1134
• nullioctl kern/tty_conf.c:106
• nullmodem kern/tty.c:743
• nullop kern/subr_xxx.c:96