434 static unsigned long find_smallest_section_pfn(int nid, struct zone *zone,  in find_smallest_section_pfn()  argument
445 		if (zone != page_zone(pfn_to_page(start_pfn)))  in find_smallest_section_pfn()
455 static unsigned long find_biggest_section_pfn(int nid, struct zone *zone,  in find_biggest_section_pfn()  argument
470 		if (zone != page_zone(pfn_to_page(pfn)))  in find_biggest_section_pfn()
479 static void shrink_zone_span(struct zone *zone, unsigned long start_pfn,  in shrink_zone_span()  argument
483 	int nid = zone_to_nid(zone);  in shrink_zone_span()
485 	if (zone->zone_start_pfn == start_pfn) {  in shrink_zone_span()
492 		pfn = find_smallest_section_pfn(nid, zone, end_pfn,  in shrink_zone_span()
493 						zone_end_pfn(zone));  in shrink_zone_span()
495 			zone->spanned_pages = zone_end_pfn(zone) - pfn;  in shrink_zone_span()
496 			zone->zone_start_pfn = pfn;  in shrink_zone_span()
498 			zone->zone_start_pfn = 0;  in shrink_zone_span()
499 			zone->spanned_pages = 0;  in shrink_zone_span()
501 	} else if (zone_end_pfn(zone) == end_pfn) {  in shrink_zone_span()
508 		pfn = find_biggest_section_pfn(nid, zone, zone->zone_start_pfn,  in shrink_zone_span()
511 			zone->spanned_pages = pfn - zone->zone_start_pfn + 1;  in shrink_zone_span()
513 			zone->zone_start_pfn = 0;  in shrink_zone_span()
514 			zone->spanned_pages = 0;  in shrink_zone_span()
522 	struct zone *zone;  in update_pgdat_span()  local
524 	for (zone = pgdat->node_zones;  in update_pgdat_span()
525 	     zone < pgdat->node_zones + MAX_NR_ZONES; zone++) {  in update_pgdat_span()
526 		unsigned long end_pfn = zone_end_pfn(zone);  in update_pgdat_span()
529 		if (!zone->spanned_pages)  in update_pgdat_span()
532 			node_start_pfn = zone->zone_start_pfn;  in update_pgdat_span()
539 		if (zone->zone_start_pfn < node_start_pfn)  in update_pgdat_span()
540 			node_start_pfn = zone->zone_start_pfn;  in update_pgdat_span()
547 void remove_pfn_range_from_zone(struct zone *zone,  in remove_pfn_range_from_zone()  argument
552 	struct pglist_data *pgdat = zone->zone_pgdat;  in remove_pfn_range_from_zone()
571 	if (zone_is_zone_device(zone))  in remove_pfn_range_from_zone()
574 	clear_zone_contiguous(zone);  in remove_pfn_range_from_zone()
576 	shrink_zone_span(zone, start_pfn, start_pfn + nr_pages);  in remove_pfn_range_from_zone()
579 	set_zone_contiguous(zone);  in remove_pfn_range_from_zone()
703 static void __meminit resize_zone_range(struct zone *zone, unsigned long start_pfn,  in resize_zone_range()  argument
706 	unsigned long old_end_pfn = zone_end_pfn(zone);  in resize_zone_range()
708 	if (zone_is_empty(zone) || start_pfn < zone->zone_start_pfn)  in resize_zone_range()
709 		zone->zone_start_pfn = start_pfn;  in resize_zone_range()
711 	zone->spanned_pages = max(start_pfn + nr_pages, old_end_pfn) - zone->zone_start_pfn;  in resize_zone_range()
748 void move_pfn_range_to_zone(struct zone *zone, unsigned long start_pfn,  in move_pfn_range_to_zone()  argument
753 	struct pglist_data *pgdat = zone->zone_pgdat;  in move_pfn_range_to_zone()
756 	clear_zone_contiguous(zone);  in move_pfn_range_to_zone()
758 	if (zone_is_empty(zone))  in move_pfn_range_to_zone()
759 		init_currently_empty_zone(zone, start_pfn, nr_pages);  in move_pfn_range_to_zone()
760 	resize_zone_range(zone, start_pfn, nr_pages);  in move_pfn_range_to_zone()
769 	if (zone_is_zone_device(zone)) {  in move_pfn_range_to_zone()
782 	memmap_init_range(nr_pages, nid, zone_idx(zone), start_pfn, 0,  in move_pfn_range_to_zone()
786 	set_zone_contiguous(zone);  in move_pfn_range_to_zone()
795 					    struct zone *zone)  in auto_movable_stats_account_zone()  argument
797 	if (zone_idx(zone) == ZONE_MOVABLE) {  in auto_movable_stats_account_zone()
798 		stats->movable_pages += zone->present_pages;  in auto_movable_stats_account_zone()
800 		stats->kernel_early_pages += zone->present_early_pages;  in auto_movable_stats_account_zone()
806 		stats->movable_pages += zone->cma_pages;  in auto_movable_stats_account_zone()
807 		stats->kernel_early_pages -= zone->cma_pages;  in auto_movable_stats_account_zone()
849 	struct zone *zone;  in auto_movable_can_online_movable()  local
855 		for_each_populated_zone(zone)  in auto_movable_can_online_movable()
856 			auto_movable_stats_account_zone(&stats, zone);  in auto_movable_can_online_movable()
861 			zone = pgdat->node_zones + i;  in auto_movable_can_online_movable()
862 			if (populated_zone(zone))  in auto_movable_can_online_movable()
863 				auto_movable_stats_account_zone(&stats, zone);  in auto_movable_can_online_movable()
898 static struct zone *default_kernel_zone_for_pfn(int nid, unsigned long start_pfn,  in default_kernel_zone_for_pfn()
905 		struct zone *zone = &pgdat->node_zones[zid];  in default_kernel_zone_for_pfn()  local
907 		if (zone_intersects(zone, start_pfn, nr_pages))  in default_kernel_zone_for_pfn()
908 			return zone;  in default_kernel_zone_for_pfn()
964 static struct zone *auto_movable_zone_for_pfn(int nid,  in auto_movable_zone_for_pfn()
1025 static inline struct zone *default_zone_for_pfn(int nid, unsigned long start_pfn,  in default_zone_for_pfn()
1028 	struct zone *kernel_zone = default_kernel_zone_for_pfn(nid, start_pfn,  in default_zone_for_pfn()
1030 	struct zone *movable_zone = &NODE_DATA(nid)->node_zones[ZONE_MOVABLE];  in default_zone_for_pfn()
1049 struct zone *zone_for_pfn_range(int online_type, int nid,  in zone_for_pfn_range()
1072 	struct zone *zone = page_zone(page);  in adjust_present_page_count()  local
1073 	const bool movable = zone_idx(zone) == ZONE_MOVABLE;  in adjust_present_page_count()
1080 		zone->present_early_pages += nr_pages;  in adjust_present_page_count()
1081 	zone->present_pages += nr_pages;  in adjust_present_page_count()
1082 	zone->zone_pgdat->node_present_pages += nr_pages;  in adjust_present_page_count()
1091 			      struct zone *zone)  in mhp_init_memmap_on_memory()  argument
1100 	move_pfn_range_to_zone(zone, pfn, nr_pages, NULL, MIGRATE_UNMOVABLE,  in mhp_init_memmap_on_memory()
1145 		       struct zone *zone, struct memory_group *group)  in online_pages()  argument
1154 	const int nid = zone_to_nid(zone);  in online_pages()
1172 	move_pfn_range_to_zone(zone, pfn, nr_pages, NULL, MIGRATE_MOVABLE,  in online_pages()
1193 	spin_lock_irqsave(&zone->lock, flags);  in online_pages()
1194 	zone->nr_isolate_pageblock += nr_pages / pageblock_nr_pages;  in online_pages()
1195 	spin_unlock_irqrestore(&zone->lock, flags);  in online_pages()
1202 	if (!populated_zone(zone)) {  in online_pages()
1204 		setup_zone_pageset(zone);  in online_pages()
1224 	shuffle_zone(zone);  in online_pages()
1248 	remove_pfn_range_from_zone(zone, pfn, nr_pages);  in online_pages()
1895 			struct zone *zone, struct memory_group *group)  in offline_pages()  argument
1899 	struct pglist_data *pgdat = zone->zone_pgdat;  in offline_pages()
1900 	const int node = zone_to_nid(zone);  in offline_pages()
1944 	if (WARN_ON_ONCE(page_zone(pfn_to_page(start_pfn)) != zone ||  in offline_pages()
1945 			 page_zone(pfn_to_page(end_pfn - 1)) != zone)) {  in offline_pages()
1955 	zone_pcp_disable(zone);  in offline_pages()
2044 	spin_lock_irqsave(&zone->lock, flags);  in offline_pages()
2045 	zone->nr_isolate_pageblock -= nr_pages / pageblock_nr_pages;  in offline_pages()
2046 	spin_unlock_irqrestore(&zone->lock, flags);  in offline_pages()
2049 	zone_pcp_enable(zone);  in offline_pages()
2064 	if (!populated_zone(zone)) {  in offline_pages()
2065 		zone_pcp_reset(zone);  in offline_pages()
2079 	remove_pfn_range_from_zone(zone, start_pfn, nr_pages);  in offline_pages()
2090 	zone_pcp_enable(zone);  in offline_pages()