SECTIONS_SHIFT    426 include/linux/mm.h #define SECTIONS_WIDTH		SECTIONS_SHIFT
SECTIONS_SHIFT    470 include/linux/mm.h #define ZONEID_SHIFT		(SECTIONS_SHIFT + ZONES_SHIFT)
SECTIONS_SHIFT    844 include/linux/mmzone.h #define NR_MEM_SECTIONS		(1UL << SECTIONS_SHIFT)
SECTIONS_SHIFT     17 mm/mm_init.c   #ifndef SECTIONS_SHIFT
SECTIONS_SHIFT     81 mm/mm_init.c   		SECTIONS_SHIFT,