kernel linking

This is with latest -current on arm:

linking kernel
kern_intr.o(.text+0x15d8): In function `swi_sched':
: undefined reference to `PCPU_LAZY_ADD'
kern_synch.o(.text+0x210): In function `mi_switch':
: undefined reference to `PCPU_LAZY_ADD'
kern_thread.o(.text+0x9b4): In function `thread_exit':
: undefined reference to `PCPU_LAZY_ADD'
subr_trap.o(.text+0x180): In function `ast':
: undefined reference to `PCPU_LAZY_ADD'
nfs_bio.o(.text+0x11cc): In function `nfs_getpages':
: undefined reference to `PCPU_LAZY_ADD'
nfs_bio.o(.text+0x1620): more undefined references to `PCPU_LAZY_ADD' follow
*** Error code 1

May be I need to add something in my kernel config file?