arch/x86/include/asm/Kbuild

genhdr-y += unistd_32.h
genhdr-y += unistd_64.h
genhdr-y += unistd_x32.h

generic-y += clkdev.h
generic-y += cputime.h
generic-y += early_ioremap.h
generic-y += mcs_spinlock.h
generic-y += scatterlist.h