Lines Matching full:cc
221 static inline bool isolation_suitable(struct compact_control *cc, in isolation_suitable() argument
224 if (cc->ignore_skip_hint) in isolation_suitable()
452 static bool test_and_set_skip(struct compact_control *cc, struct page *page) in test_and_set_skip() argument
457 if (cc->ignore_skip_hint) in test_and_set_skip()
461 if (!skip && !cc->no_set_skip_hint) in test_and_set_skip()
467 static void update_cached_migrate(struct compact_control *cc, unsigned long pfn) in update_cached_migrate() argument
469 struct zone *zone = cc->zone; in update_cached_migrate()
472 if (cc->no_set_skip_hint) in update_cached_migrate()
480 if (cc->mode != MIGRATE_ASYNC && in update_cached_migrate()
489 static void update_pageblock_skip(struct compact_control *cc, in update_pageblock_skip() argument
492 struct zone *zone = cc->zone; in update_pageblock_skip()
494 if (cc->no_set_skip_hint) in update_pageblock_skip()
503 static inline bool isolation_suitable(struct compact_control *cc, in isolation_suitable() argument
514 static inline void update_pageblock_skip(struct compact_control *cc, in update_pageblock_skip() argument
519 static void update_cached_migrate(struct compact_control *cc, unsigned long pfn) in update_cached_migrate() argument
523 static bool test_and_set_skip(struct compact_control *cc, struct page *page) in test_and_set_skip() argument
539 struct compact_control *cc) in compact_lock_irqsave() argument
543 if (cc->mode == MIGRATE_ASYNC && !cc->contended) { in compact_lock_irqsave()
547 cc->contended = true; in compact_lock_irqsave()
567 unsigned long flags, bool *locked, struct compact_control *cc) in compact_unlock_should_abort() argument
575 cc->contended = true; in compact_unlock_should_abort()
589 static unsigned long isolate_freepages_block(struct compact_control *cc, in isolate_freepages_block() argument
619 && compact_unlock_should_abort(&cc->zone->lock, flags, in isolate_freepages_block()
620 &locked, cc)) in isolate_freepages_block()
649 locked = compact_lock_irqsave(&cc->zone->lock, in isolate_freepages_block()
650 &flags, cc); in isolate_freepages_block()
666 cc->nr_freepages += isolated; in isolate_freepages_block()
669 if (!strict && cc->nr_migratepages <= cc->nr_freepages) { in isolate_freepages_block()
685 spin_unlock_irqrestore(&cc->zone->lock, flags); in isolate_freepages_block()
707 cc->total_free_scanned += nr_scanned; in isolate_freepages_block()
715 * @cc: Compaction control structure.
721 * undo its actions and return zero. cc->freepages[] are empty.
725 * a free page). cc->freepages[] contain free pages isolated.
728 isolate_freepages_range(struct compact_control *cc, in isolate_freepages_range() argument
735 INIT_LIST_HEAD(&cc->freepages[order]); in isolate_freepages_range()
739 if (block_start_pfn < cc->zone->zone_start_pfn) in isolate_freepages_range()
740 block_start_pfn = cc->zone->zone_start_pfn; in isolate_freepages_range()
762 block_end_pfn, cc->zone)) in isolate_freepages_range()
765 isolated = isolate_freepages_block(cc, &isolate_start_pfn, in isolate_freepages_range()
766 block_end_pfn, cc->freepages, 0, true); in isolate_freepages_range()
785 release_free_list(cc->freepages); in isolate_freepages_range()
794 static bool too_many_isolated(struct compact_control *cc) in too_many_isolated() argument
796 pg_data_t *pgdat = cc->zone->zone_pgdat; in too_many_isolated()
814 if (cc->gfp_mask & __GFP_FS) { in too_many_isolated()
855 * @cc: Compaction control structure.
864 * cc->migrate_pfn will contain the next pfn to scan.
866 * The pages are isolated on cc->migratepages list (not required to be empty),
867 * and cc->nr_migratepages is updated accordingly.
870 isolate_migratepages_block(struct compact_control *cc, unsigned long low_pfn, in isolate_migratepages_block() argument
873 pg_data_t *pgdat = cc->zone->zone_pgdat; in isolate_migratepages_block()
887 cc->migrate_pfn = low_pfn; in isolate_migratepages_block()
894 while (unlikely(too_many_isolated(cc))) { in isolate_migratepages_block()
896 if (cc->nr_migratepages) in isolate_migratepages_block()
900 if (cc->mode == MIGRATE_ASYNC) in isolate_migratepages_block()
911 if (cc->direct_compaction && (cc->mode == MIGRATE_ASYNC)) { in isolate_migratepages_block()
913 next_skip_pfn = block_end_pfn(low_pfn, cc->order); in isolate_migratepages_block()
939 next_skip_pfn = block_end_pfn(low_pfn, cc->order); in isolate_migratepages_block()
954 cc->contended = true; in isolate_migratepages_block()
974 low_pfn == cc->zone->zone_start_pfn)) { in isolate_migratepages_block()
975 if (!isolation_suitable(cc, page)) { in isolate_migratepages_block()
990 if (!cc->alloc_contig) { in isolate_migratepages_block()
1004 ret = isolate_or_dissolve_huge_page(page, &cc->migratepages); in isolate_migratepages_block()
1022 * on the cc->migratepages list. in isolate_migratepages_block()
1066 if (PageCompound(page) && !cc->alloc_contig) { in isolate_migratepages_block()
1070 if (skip_isolation_on_order(order, cc->order)) { in isolate_migratepages_block()
1127 if (!(cc->gfp_mask & __GFP_FS) && mapping) in isolate_migratepages_block()
1199 compact_lock_irqsave(&lruvec->lru_lock, &flags, cc); in isolate_migratepages_block()
1211 if (test_and_set_skip(cc, valid_page) && in isolate_migratepages_block()
1212 !cc->finish_pageblock) { in isolate_migratepages_block()
1222 cc->order) && in isolate_migratepages_block()
1223 !cc->alloc_contig)) { in isolate_migratepages_block()
1242 list_add(&folio->lru, &cc->migratepages); in isolate_migratepages_block()
1244 cc->nr_migratepages += folio_nr_pages(folio); in isolate_migratepages_block()
1254 if (cc->nr_migratepages >= COMPACT_CLUSTER_MAX && in isolate_migratepages_block()
1255 !cc->finish_pageblock && !cc->contended) { in isolate_migratepages_block()
1276 * instead of migrating, as we cannot form the cc->order buddy in isolate_migratepages_block()
1284 putback_movable_pages(&cc->migratepages); in isolate_migratepages_block()
1285 cc->nr_migratepages = 0; in isolate_migratepages_block()
1295 next_skip_pfn += 1UL << cc->order; in isolate_migratepages_block()
1327 if (low_pfn == end_pfn && (!nr_isolated || cc->finish_pageblock)) { in isolate_migratepages_block()
1328 if (!cc->no_set_skip_hint && valid_page && !skip_updated) in isolate_migratepages_block()
1330 update_cached_migrate(cc, low_pfn); in isolate_migratepages_block()
1337 cc->total_migrate_scanned += nr_scanned; in isolate_migratepages_block()
1341 cc->migrate_pfn = low_pfn; in isolate_migratepages_block()
1348 * @cc: Compaction control structure.
1356 isolate_migratepages_range(struct compact_control *cc, unsigned long start_pfn, in isolate_migratepages_range() argument
1365 if (block_start_pfn < cc->zone->zone_start_pfn) in isolate_migratepages_range()
1366 block_start_pfn = cc->zone->zone_start_pfn; in isolate_migratepages_range()
1376 block_end_pfn, cc->zone)) in isolate_migratepages_range()
1379 ret = isolate_migratepages_block(cc, pfn, block_end_pfn, in isolate_migratepages_range()
1385 if (cc->nr_migratepages >= COMPACT_CLUSTER_MAX) in isolate_migratepages_range()
1395 static bool suitable_migration_source(struct compact_control *cc, in suitable_migration_source() argument
1403 if ((cc->mode != MIGRATE_ASYNC) || !cc->direct_compaction) in suitable_migration_source()
1408 if (cc->migratetype == MIGRATE_MOVABLE) in suitable_migration_source()
1411 return block_mt == cc->migratetype; in suitable_migration_source()
1415 static bool suitable_migration_target(struct compact_control *cc, in suitable_migration_target() argument
1420 int order = cc->order > 0 ? cc->order : pageblock_order; in suitable_migration_target()
1431 if (cc->ignore_block_suitable) in suitable_migration_target()
1443 freelist_scan_limit(struct compact_control *cc) in freelist_scan_limit() argument
1447 return (COMPACT_CLUSTER_MAX >> min(shift, cc->fast_search_fail)) + 1; in freelist_scan_limit()
1454 static inline bool compact_scanners_met(struct compact_control *cc) in compact_scanners_met() argument
1456 return (cc->free_pfn >> pageblock_order) in compact_scanners_met()
1457 <= (cc->migrate_pfn >> pageblock_order); in compact_scanners_met()
1494 fast_isolate_around(struct compact_control *cc, unsigned long pfn) in fast_isolate_around() argument
1500 if (cc->nr_freepages >= cc->nr_migratepages) in fast_isolate_around()
1504 if (cc->direct_compaction && cc->mode == MIGRATE_ASYNC) in fast_isolate_around()
1508 start_pfn = max(pageblock_start_pfn(pfn), cc->zone->zone_start_pfn); in fast_isolate_around()
1509 end_pfn = min(pageblock_end_pfn(pfn), zone_end_pfn(cc->zone)); in fast_isolate_around()
1511 page = pageblock_pfn_to_page(start_pfn, end_pfn, cc->zone); in fast_isolate_around()
1515 isolate_freepages_block(cc, &start_pfn, end_pfn, cc->freepages, 1, false); in fast_isolate_around()
1518 if (start_pfn == end_pfn && !cc->no_set_skip_hint) in fast_isolate_around()
1523 static int next_search_order(struct compact_control *cc, int order) in next_search_order() argument
1527 order = cc->order - 1; in next_search_order()
1530 if (order == cc->search_order) { in next_search_order()
1531 cc->search_order--; in next_search_order()
1532 if (cc->search_order < 0) in next_search_order()
1533 cc->search_order = cc->order - 1; in next_search_order()
1540 static void fast_isolate_freepages(struct compact_control *cc) in fast_isolate_freepages() argument
1542 unsigned int limit = max(1U, freelist_scan_limit(cc) >> 1); in fast_isolate_freepages()
1552 if (cc->order <= 0) in fast_isolate_freepages()
1559 if (cc->free_pfn >= cc->zone->compact_init_free_pfn) { in fast_isolate_freepages()
1568 distance = (cc->free_pfn - cc->migrate_pfn); in fast_isolate_freepages()
1569 low_pfn = pageblock_start_pfn(cc->free_pfn - (distance >> 2)); in fast_isolate_freepages()
1570 min_pfn = pageblock_start_pfn(cc->free_pfn - (distance >> 1)); in fast_isolate_freepages()
1579 cc->search_order = min_t(unsigned int, cc->order - 1, cc->search_order); in fast_isolate_freepages()
1581 for (order = cc->search_order; in fast_isolate_freepages()
1583 order = next_search_order(cc, order)) { in fast_isolate_freepages()
1584 struct free_area *area = &cc->zone->free_area[order]; in fast_isolate_freepages()
1594 spin_lock_irqsave(&cc->zone->lock, flags); in fast_isolate_freepages()
1605 cc->zone->zone_start_pfn); in fast_isolate_freepages()
1608 cc->fast_search_fail = 0; in fast_isolate_freepages()
1609 cc->search_order = order; in fast_isolate_freepages()
1643 cc->nr_freepages += nr_isolated; in fast_isolate_freepages()
1644 list_add_tail(&page->lru, &cc->freepages[order]); in fast_isolate_freepages()
1648 order = cc->search_order + 1; in fast_isolate_freepages()
1653 spin_unlock_irqrestore(&cc->zone->lock, flags); in fast_isolate_freepages()
1656 if (cc->nr_freepages >= cc->nr_migratepages) in fast_isolate_freepages()
1667 trace_mm_compaction_fast_isolate_freepages(min_pfn, cc->free_pfn, in fast_isolate_freepages()
1671 cc->fast_search_fail++; in fast_isolate_freepages()
1680 cc->free_pfn = highest; in fast_isolate_freepages()
1682 if (cc->direct_compaction && pfn_valid(min_pfn)) { in fast_isolate_freepages()
1685 zone_end_pfn(cc->zone)), in fast_isolate_freepages()
1686 cc->zone); in fast_isolate_freepages()
1687 if (page && !suitable_migration_target(cc, page)) in fast_isolate_freepages()
1690 cc->free_pfn = min_pfn; in fast_isolate_freepages()
1696 if (highest && highest >= cc->zone->compact_cached_free_pfn) { in fast_isolate_freepages()
1698 cc->zone->compact_cached_free_pfn = highest; in fast_isolate_freepages()
1701 cc->total_free_scanned += nr_scanned; in fast_isolate_freepages()
1706 fast_isolate_around(cc, low_pfn); in fast_isolate_freepages()
1713 static void isolate_freepages(struct compact_control *cc) in isolate_freepages() argument
1715 struct zone *zone = cc->zone; in isolate_freepages()
1724 fast_isolate_freepages(cc); in isolate_freepages()
1725 if (cc->nr_freepages) in isolate_freepages()
1739 isolate_start_pfn = cc->free_pfn; in isolate_freepages()
1743 low_pfn = pageblock_end_pfn(cc->migrate_pfn); in isolate_freepages()
1744 stride = cc->mode == MIGRATE_ASYNC ? COMPACT_CLUSTER_MAX : 1; in isolate_freepages()
1748 * pages on cc->migratepages. We stop searching if the migrate in isolate_freepages()
1777 if (!suitable_migration_target(cc, page)) in isolate_freepages()
1781 if (!isolation_suitable(cc, page)) in isolate_freepages()
1785 nr_isolated = isolate_freepages_block(cc, &isolate_start_pfn, in isolate_freepages()
1786 block_end_pfn, cc->freepages, stride, false); in isolate_freepages()
1790 update_pageblock_skip(cc, page, block_start_pfn - in isolate_freepages()
1794 if (cc->nr_freepages >= cc->nr_migratepages) { in isolate_freepages()
1826 cc->free_pfn = isolate_start_pfn; in isolate_freepages()
1835 struct compact_control *cc = (struct compact_control *)data; in compaction_alloc_noprof() local
1845 if (!list_empty(&cc->freepages[start_order])) in compaction_alloc_noprof()
1852 isolate_freepages(cc); in compaction_alloc_noprof()
1857 freepage = list_first_entry(&cc->freepages[start_order], struct page, in compaction_alloc_noprof()
1867 list_add(&freepage[size].lru, &cc->freepages[start_order]); in compaction_alloc_noprof()
1876 cc->nr_freepages -= 1 << order; in compaction_alloc_noprof()
1877 cc->nr_migratepages -= 1 << order; in compaction_alloc_noprof()
1893 struct compact_control *cc = (struct compact_control *)data; in compaction_free() local
1899 list_add(&dst->lru, &cc->freepages[order]); in compaction_free()
1900 cc->nr_freepages += 1 << order; in compaction_free()
1902 cc->nr_migratepages += 1 << order; in compaction_free()
1931 update_fast_start_pfn(struct compact_control *cc, unsigned long pfn) in update_fast_start_pfn() argument
1933 if (cc->fast_start_pfn == ULONG_MAX) in update_fast_start_pfn()
1936 if (!cc->fast_start_pfn) in update_fast_start_pfn()
1937 cc->fast_start_pfn = pfn; in update_fast_start_pfn()
1939 cc->fast_start_pfn = min(cc->fast_start_pfn, pfn); in update_fast_start_pfn()
1943 reinit_migrate_pfn(struct compact_control *cc) in reinit_migrate_pfn() argument
1945 if (!cc->fast_start_pfn || cc->fast_start_pfn == ULONG_MAX) in reinit_migrate_pfn()
1946 return cc->migrate_pfn; in reinit_migrate_pfn()
1948 cc->migrate_pfn = cc->fast_start_pfn; in reinit_migrate_pfn()
1949 cc->fast_start_pfn = ULONG_MAX; in reinit_migrate_pfn()
1951 return cc->migrate_pfn; in reinit_migrate_pfn()
1959 static unsigned long fast_find_migrateblock(struct compact_control *cc) in fast_find_migrateblock() argument
1961 unsigned int limit = freelist_scan_limit(cc); in fast_find_migrateblock()
1964 unsigned long pfn = cc->migrate_pfn; in fast_find_migrateblock()
1970 if (cc->ignore_skip_hint) in fast_find_migrateblock()
1977 if (cc->finish_pageblock) in fast_find_migrateblock()
1985 if (pfn != cc->zone->zone_start_pfn && pfn != pageblock_start_pfn(pfn)) in fast_find_migrateblock()
1993 if (cc->order <= PAGE_ALLOC_COSTLY_ORDER) in fast_find_migrateblock()
2002 if (cc->direct_compaction && cc->migratetype != MIGRATE_MOVABLE) in fast_find_migrateblock()
2011 distance = (cc->free_pfn - cc->migrate_pfn) >> 1; in fast_find_migrateblock()
2012 if (cc->migrate_pfn != cc->zone->zone_start_pfn) in fast_find_migrateblock()
2014 high_pfn = pageblock_start_pfn(cc->migrate_pfn + distance); in fast_find_migrateblock()
2016 for (order = cc->order - 1; in fast_find_migrateblock()
2019 struct free_area *area = &cc->zone->free_area[order]; in fast_find_migrateblock()
2027 spin_lock_irqsave(&cc->zone->lock, flags); in fast_find_migrateblock()
2051 update_fast_start_pfn(cc, free_pfn); in fast_find_migrateblock()
2053 if (pfn < cc->zone->zone_start_pfn) in fast_find_migrateblock()
2054 pfn = cc->zone->zone_start_pfn; in fast_find_migrateblock()
2055 cc->fast_search_fail = 0; in fast_find_migrateblock()
2060 spin_unlock_irqrestore(&cc->zone->lock, flags); in fast_find_migrateblock()
2063 cc->total_migrate_scanned += nr_scanned; in fast_find_migrateblock()
2070 cc->fast_search_fail++; in fast_find_migrateblock()
2071 pfn = reinit_migrate_pfn(cc); in fast_find_migrateblock()
2081 static isolate_migrate_t isolate_migratepages(struct compact_control *cc) in isolate_migratepages() argument
2089 (cc->mode != MIGRATE_SYNC ? ISOLATE_ASYNC_MIGRATE : 0); in isolate_migratepages()
2097 low_pfn = fast_find_migrateblock(cc); in isolate_migratepages()
2099 if (block_start_pfn < cc->zone->zone_start_pfn) in isolate_migratepages()
2100 block_start_pfn = cc->zone->zone_start_pfn; in isolate_migratepages()
2107 fast_find_block = low_pfn != cc->migrate_pfn && !cc->fast_search_fail; in isolate_migratepages()
2116 for (; block_end_pfn <= cc->free_pfn; in isolate_migratepages()
2118 cc->migrate_pfn = low_pfn = block_end_pfn, in isolate_migratepages()
2131 block_end_pfn, cc->zone); in isolate_migratepages()
2137 block_end_pfn = min(next_pfn, cc->free_pfn); in isolate_migratepages()
2149 low_pfn == cc->zone->zone_start_pfn) && in isolate_migratepages()
2150 !fast_find_block && !isolation_suitable(cc, page)) in isolate_migratepages()
2161 if (!suitable_migration_source(cc, page)) { in isolate_migratepages()
2162 update_cached_migrate(cc, block_end_pfn); in isolate_migratepages()
2167 if (isolate_migratepages_block(cc, low_pfn, block_end_pfn, in isolate_migratepages()
2179 return cc->nr_migratepages ? ISOLATE_SUCCESS : ISOLATE_NONE; in isolate_migratepages()
2274 static enum compact_result __compact_finished(struct compact_control *cc) in __compact_finished() argument
2277 const int migratetype = cc->migratetype; in __compact_finished()
2281 if (compact_scanners_met(cc)) { in __compact_finished()
2283 reset_cached_positions(cc->zone); in __compact_finished()
2291 if (cc->direct_compaction) in __compact_finished()
2292 cc->zone->compact_blockskip_flush = true; in __compact_finished()
2294 if (cc->whole_zone) in __compact_finished()
2300 if (cc->proactive_compaction) { in __compact_finished()
2304 pgdat = cc->zone->zone_pgdat; in __compact_finished()
2308 score = fragmentation_score_zone(cc->zone); in __compact_finished()
2319 if (is_via_compact_memory(cc->order)) in __compact_finished()
2328 if (!pageblock_aligned(cc->migrate_pfn)) in __compact_finished()
2333 for (order = cc->order; order < NR_PAGE_ORDERS; order++) { in __compact_finished()
2334 struct free_area *area = &cc->zone->free_area[order]; in __compact_finished()
2365 if (cc->contended || fatal_signal_pending(current)) in __compact_finished()
2371 static enum compact_result compact_finished(struct compact_control *cc) in compact_finished() argument
2375 ret = __compact_finished(cc); in compact_finished()
2376 trace_mm_compaction_finished(cc->zone, cc->order, ret); in compact_finished()
2528 compact_zone(struct compact_control *cc, struct capture_control *capc) in compact_zone() argument
2531 unsigned long start_pfn = cc->zone->zone_start_pfn; in compact_zone()
2532 unsigned long end_pfn = zone_end_pfn(cc->zone); in compact_zone()
2534 const bool sync = cc->mode != MIGRATE_ASYNC; in compact_zone()
2543 cc->total_migrate_scanned = 0; in compact_zone()
2544 cc->total_free_scanned = 0; in compact_zone()
2545 cc->nr_migratepages = 0; in compact_zone()
2546 cc->nr_freepages = 0; in compact_zone()
2548 INIT_LIST_HEAD(&cc->freepages[order]); in compact_zone()
2549 INIT_LIST_HEAD(&cc->migratepages); in compact_zone()
2551 cc->migratetype = gfp_migratetype(cc->gfp_mask); in compact_zone()
2553 if (!is_via_compact_memory(cc->order)) { in compact_zone()
2554 ret = compaction_suit_allocation_order(cc->zone, cc->order, in compact_zone()
2555 cc->highest_zoneidx, in compact_zone()
2556 cc->alloc_flags, in compact_zone()
2557 cc->mode == MIGRATE_ASYNC); in compact_zone()
2566 if (compaction_restarting(cc->zone, cc->order)) in compact_zone()
2567 __reset_isolation_suitable(cc->zone); in compact_zone()
2575 cc->fast_start_pfn = 0; in compact_zone()
2576 if (cc->whole_zone) { in compact_zone()
2577 cc->migrate_pfn = start_pfn; in compact_zone()
2578 cc->free_pfn = pageblock_start_pfn(end_pfn - 1); in compact_zone()
2580 cc->migrate_pfn = cc->zone->compact_cached_migrate_pfn[sync]; in compact_zone()
2581 cc->free_pfn = cc->zone->compact_cached_free_pfn; in compact_zone()
2582 if (cc->free_pfn < start_pfn || cc->free_pfn >= end_pfn) { in compact_zone()
2583 cc->free_pfn = pageblock_start_pfn(end_pfn - 1); in compact_zone()
2584 cc->zone->compact_cached_free_pfn = cc->free_pfn; in compact_zone()
2586 if (cc->migrate_pfn < start_pfn || cc->migrate_pfn >= end_pfn) { in compact_zone()
2587 cc->migrate_pfn = start_pfn; in compact_zone()
2588 cc->zone->compact_cached_migrate_pfn[0] = cc->migrate_pfn; in compact_zone()
2589 cc->zone->compact_cached_migrate_pfn[1] = cc->migrate_pfn; in compact_zone()
2592 if (cc->migrate_pfn <= cc->zone->compact_init_migrate_pfn) in compact_zone()
2593 cc->whole_zone = true; in compact_zone()
2607 cc->zone->compact_cached_migrate_pfn[0] == cc->zone->compact_cached_migrate_pfn[1]; in compact_zone()
2609 trace_mm_compaction_begin(cc, start_pfn, end_pfn, sync); in compact_zone()
2614 while ((ret = compact_finished(cc)) == COMPACT_CONTINUE) { in compact_zone()
2616 unsigned long iteration_start_pfn = cc->migrate_pfn; in compact_zone()
2626 cc->finish_pageblock = false; in compact_zone()
2629 cc->finish_pageblock = true; in compact_zone()
2633 switch (isolate_migratepages(cc)) { in compact_zone()
2636 putback_movable_pages(&cc->migratepages); in compact_zone()
2637 cc->nr_migratepages = 0; in compact_zone()
2641 cc->zone->compact_cached_migrate_pfn[1] = in compact_zone()
2642 cc->zone->compact_cached_migrate_pfn[0]; in compact_zone()
2648 * previous cc->order aligned block. in compact_zone()
2653 last_migrated_pfn = max(cc->zone->zone_start_pfn, in compact_zone()
2654 pageblock_start_pfn(cc->migrate_pfn - 1)); in compact_zone()
2659 * compaction_alloc/free() will update cc->nr_migratepages in compact_zone()
2662 nr_migratepages = cc->nr_migratepages; in compact_zone()
2663 err = migrate_pages(&cc->migratepages, compaction_alloc, in compact_zone()
2664 compaction_free, (unsigned long)cc, cc->mode, in compact_zone()
2670 cc->nr_migratepages = 0; in compact_zone()
2672 putback_movable_pages(&cc->migratepages); in compact_zone()
2677 if (err == -ENOMEM && !compact_scanners_met(cc)) { in compact_zone()
2692 if (!pageblock_aligned(cc->migrate_pfn) && in compact_zone()
2693 !cc->ignore_skip_hint && !cc->finish_pageblock && in compact_zone()
2694 (cc->mode < MIGRATE_SYNC)) { in compact_zone()
2695 cc->finish_pageblock = true; in compact_zone()
2702 if (cc->order == COMPACTION_HPAGE_ORDER) in compact_zone()
2718 * cc->order aligned block where we migrated from? If yes, in compact_zone()
2723 if (cc->order > 0 && last_migrated_pfn) { in compact_zone()
2725 block_start_pfn(cc->migrate_pfn, cc->order); in compact_zone()
2728 lru_add_drain_cpu_zone(cc->zone); in compact_zone()
2740 if (cc->nr_freepages > 0) { in compact_zone()
2741 unsigned long free_pfn = release_free_list(cc->freepages); in compact_zone()
2743 cc->nr_freepages = 0; in compact_zone()
2751 if (free_pfn > cc->zone->compact_cached_free_pfn) in compact_zone()
2752 cc->zone->compact_cached_free_pfn = free_pfn; in compact_zone()
2755 count_compact_events(COMPACTMIGRATE_SCANNED, cc->total_migrate_scanned); in compact_zone()
2756 count_compact_events(COMPACTFREE_SCANNED, cc->total_free_scanned); in compact_zone()
2758 trace_mm_compaction_end(cc, start_pfn, end_pfn, sync, ret); in compact_zone()
2760 VM_BUG_ON(!list_empty(&cc->migratepages)); in compact_zone()
2771 struct compact_control cc = { in compact_zone_order() local
2786 .cc = &cc, in compact_zone_order()
2798 ret = compact_zone(&cc, &capc); in compact_zone_order()
2913 struct compact_control cc = { in compact_node() local
2930 cc.zone = zone; in compact_node()
2932 compact_zone(&cc, NULL); in compact_node()
2936 cc.total_migrate_scanned); in compact_node()
2938 cc.total_free_scanned); in compact_node()
3077 struct compact_control cc = { in kcompactd_do_work() local
3087 trace_mm_compaction_kcompactd_wake(pgdat->node_id, cc.order, in kcompactd_do_work()
3088 cc.highest_zoneidx); in kcompactd_do_work()
3091 for (zoneid = 0; zoneid <= cc.highest_zoneidx; zoneid++) { in kcompactd_do_work()
3098 if (compaction_deferred(zone, cc.order)) in kcompactd_do_work()
3102 cc.order, zoneid, ALLOC_WMARK_MIN, in kcompactd_do_work()
3110 cc.zone = zone; in kcompactd_do_work()
3111 status = compact_zone(&cc, NULL); in kcompactd_do_work()
3114 compaction_defer_reset(zone, cc.order, false); in kcompactd_do_work()
3119 * order >= cc.order. This is ratelimited by the in kcompactd_do_work()
3128 defer_compaction(zone, cc.order); in kcompactd_do_work()
3132 cc.total_migrate_scanned); in kcompactd_do_work()
3134 cc.total_free_scanned); in kcompactd_do_work()
3142 if (pgdat->kcompactd_max_order <= cc.order) in kcompactd_do_work()
3144 if (pgdat->kcompactd_highest_zoneidx >= cc.highest_zoneidx) in kcompactd_do_work()