PFN_SECTION_SHIFT 455 include/linux/mm.h #ifndef PFN_SECTION_SHIFT PFN_SECTION_SHIFT 828 include/linux/mmzone.h #define pfn_to_section_nr(pfn) ((pfn) >> PFN_SECTION_SHIFT) PFN_SECTION_SHIFT 829 include/linux/mmzone.h #define section_nr_to_pfn(sec) ((sec) << PFN_SECTION_SHIFT) PFN_SECTION_SHIFT 846 include/linux/mmzone.h #define PAGES_PER_SECTION (1UL << PFN_SECTION_SHIFT) PFN_SECTION_SHIFT 850 include/linux/mmzone.h ((1UL << (PFN_SECTION_SHIFT - pageblock_order)) * NR_PAGEBLOCK_BITS) PFN_SECTION_SHIFT 287 mm/memory_hotplug.c err = __add_section(zone, i << PFN_SECTION_SHIFT);