47 #define block_start_pfn(pfn, order)	round_down(pfn, 1UL << (order))  argument
48 #define block_end_pfn(pfn, order)	ALIGN((pfn) + 1, 1UL << (order))  argument
70 	unsigned int i, order, nr_pages;  in map_pages()  local
77 		order = page_private(page);  in map_pages()
78 		nr_pages = 1 << order;  in map_pages()
80 		post_alloc_hook(page, order, __GFP_MOVABLE);  in map_pages()
81 		if (order)  in map_pages()
82 			split_page(page, order);  in map_pages()
141 void defer_compaction(struct zone *zone, int order)  in defer_compaction()  argument
146 	if (order < zone->compact_order_failed)  in defer_compaction()
147 		zone->compact_order_failed = order;  in defer_compaction()
152 	trace_mm_compaction_defer_compaction(zone, order);  in defer_compaction()
156 bool compaction_deferred(struct zone *zone, int order)  in compaction_deferred()  argument
160 	if (order < zone->compact_order_failed)  in compaction_deferred()
170 	trace_mm_compaction_deferred(zone, order);  in compaction_deferred()
180 void compaction_defer_reset(struct zone *zone, int order,  in compaction_defer_reset()  argument
187 	if (order >= zone->compact_order_failed)  in compaction_defer_reset()
188 		zone->compact_order_failed = order + 1;  in compaction_defer_reset()
190 	trace_mm_compaction_defer_reset(zone, order);  in compaction_defer_reset()
194 bool compaction_restarting(struct zone *zone, int order)  in compaction_restarting()  argument
196 	if (order < zone->compact_order_failed)  in compaction_restarting()
444 	unsigned int order;  in isolate_freepages_block()  local
477 			const unsigned int order = compound_order(page);  in isolate_freepages_block()  local
479 			if (likely(order < MAX_ORDER)) {  in isolate_freepages_block()
480 				blockpfn += (1UL << order) - 1;  in isolate_freepages_block()
481 				cursor += (1UL << order) - 1;  in isolate_freepages_block()
516 		order = page_order(page);  in isolate_freepages_block()
517 		isolated = __isolate_free_page(page, order);  in isolate_freepages_block()
520 		set_page_private(page, order);  in isolate_freepages_block()
726 		next_skip_pfn = block_end_pfn(low_pfn, cc->order);  in isolate_migratepages_block()
751 			next_skip_pfn = block_end_pfn(low_pfn, cc->order);  in isolate_migratepages_block()
800 			const unsigned int order = compound_order(page);  in isolate_migratepages_block()  local
802 			if (likely(order < MAX_ORDER))  in isolate_migratepages_block()
803 				low_pfn += (1UL << order) - 1;  in isolate_migratepages_block()
930 			next_skip_pfn += 1UL << cc->order;  in isolate_migratepages_block()
1307 static inline bool is_via_compact_memory(int order)  in is_via_compact_memory()  argument
1309 	return order == -1;  in is_via_compact_memory()
1315 	unsigned int order;  in __compact_finished()  local
1341 	if (is_via_compact_memory(cc->order))  in __compact_finished()
1356 	for (order = cc->order; order < MAX_ORDER; order++) {  in __compact_finished()
1357 		struct free_area *area = &zone->free_area[order];  in __compact_finished()
1374 		if (find_suitable_fallback(area, order, migratetype,  in __compact_finished()
1409 	trace_mm_compaction_finished(zone, cc->order, ret);  in compact_finished()
1423 static enum compact_result __compaction_suitable(struct zone *zone, int order,  in __compaction_suitable()  argument
1430 	if (is_via_compact_memory(order))  in __compaction_suitable()
1438 	if (zone_watermark_ok(zone, order, watermark, classzone_idx,  in __compaction_suitable()
1456 	watermark = (order > PAGE_ALLOC_COSTLY_ORDER) ?  in __compaction_suitable()
1458 	watermark += compact_gap(order);  in __compaction_suitable()
1466 enum compact_result compaction_suitable(struct zone *zone, int order,  in compaction_suitable()  argument
1473 	ret = __compaction_suitable(zone, order, alloc_flags, classzone_idx,  in compaction_suitable()
1491 	if (ret == COMPACT_CONTINUE && (order > PAGE_ALLOC_COSTLY_ORDER)) {  in compaction_suitable()
1492 		fragindex = fragmentation_index(zone, order);  in compaction_suitable()
1497 	trace_mm_compaction_suitable(zone, order, ret);  in compaction_suitable()
1504 bool compaction_zonelist_suitable(struct alloc_context *ac, int order,  in compaction_zonelist_suitable()  argument
1525 		available = zone_reclaimable_pages(zone) / order;  in compaction_zonelist_suitable()
1527 		compact_result = __compaction_suitable(zone, order, alloc_flags,  in compaction_zonelist_suitable()
1544 	ret = compaction_suitable(zone, cc->order, cc->alloc_flags,  in compact_zone()
1557 	if (compaction_restarting(zone, cc->order))  in compact_zone()
1639 						cc->migrate_pfn - 1, cc->order);  in compact_zone()
1654 		if (cc->order > 0 && cc->last_migrated_pfn) {  in compact_zone()
1657 				block_start_pfn(cc->migrate_pfn, cc->order);  in compact_zone()
1700 static enum compact_result compact_zone_order(struct zone *zone, int order,  in compact_zone_order()  argument
1710 		.order = order,  in compact_zone_order()
1745 enum compact_result try_to_compact_pages(gfp_t gfp_mask, unsigned int order,  in try_to_compact_pages()  argument
1761 	trace_mm_compaction_try_to_compact_pages(order, gfp_mask, prio);  in try_to_compact_pages()
1769 					&& compaction_deferred(zone, order)) {  in try_to_compact_pages()
1774 		status = compact_zone_order(zone, order, gfp_mask, prio,  in try_to_compact_pages()
1786 			compaction_defer_reset(zone, order, false);  in try_to_compact_pages()
1798 			defer_compaction(zone, order);  in try_to_compact_pages()
1821 		.order = -1,  in compact_node()
1949 		.order = pgdat->kcompactd_max_order,  in kcompactd_do_work()
1957 	trace_mm_compaction_kcompactd_wake(pgdat->node_id, cc.order,  in kcompactd_do_work()
1968 		if (compaction_deferred(zone, cc.order))  in kcompactd_do_work()
1971 		if (compaction_suitable(zone, cc.order, 0, zoneid) !=  in kcompactd_do_work()
1988 			compaction_defer_reset(zone, cc.order, false);  in kcompactd_do_work()
2002 			defer_compaction(zone, cc.order);  in kcompactd_do_work()
2019 	if (pgdat->kcompactd_max_order <= cc.order)  in kcompactd_do_work()
2025 void wakeup_kcompactd(pg_data_t *pgdat, int order, int classzone_idx)  in wakeup_kcompactd()  argument
2027 	if (!order)  in wakeup_kcompactd()
2030 	if (pgdat->kcompactd_max_order < order)  in wakeup_kcompactd()
2031 		pgdat->kcompactd_max_order = order;  in wakeup_kcompactd()
2046 	trace_mm_compaction_wakeup_kcompactd(pgdat->node_id, order,  in wakeup_kcompactd()