Lines Matching full:cc
188 static inline bool isolation_suitable(struct compact_control *cc, in isolation_suitable() argument
191 if (cc->ignore_skip_hint) in isolation_suitable()
419 static bool test_and_set_skip(struct compact_control *cc, struct page *page) in test_and_set_skip() argument
424 if (cc->ignore_skip_hint) in test_and_set_skip()
428 if (!skip && !cc->no_set_skip_hint) in test_and_set_skip()
434 static void update_cached_migrate(struct compact_control *cc, unsigned long pfn) in update_cached_migrate() argument
436 struct zone *zone = cc->zone; in update_cached_migrate()
439 if (cc->no_set_skip_hint) in update_cached_migrate()
447 if (cc->mode != MIGRATE_ASYNC && in update_cached_migrate()
456 static void update_pageblock_skip(struct compact_control *cc, in update_pageblock_skip() argument
459 struct zone *zone = cc->zone; in update_pageblock_skip()
461 if (cc->no_set_skip_hint) in update_pageblock_skip()
470 static inline bool isolation_suitable(struct compact_control *cc, in isolation_suitable() argument
481 static inline void update_pageblock_skip(struct compact_control *cc, in update_pageblock_skip() argument
486 static void update_cached_migrate(struct compact_control *cc, unsigned long pfn) in update_cached_migrate() argument
490 static bool test_and_set_skip(struct compact_control *cc, struct page *page) in test_and_set_skip() argument
506 struct compact_control *cc) in compact_lock_irqsave() argument
510 if (cc->mode == MIGRATE_ASYNC && !cc->contended) { in compact_lock_irqsave()
514 cc->contended = true; in compact_lock_irqsave()
534 unsigned long flags, bool *locked, struct compact_control *cc) in compact_unlock_should_abort() argument
542 cc->contended = true; in compact_unlock_should_abort()
556 static unsigned long isolate_freepages_block(struct compact_control *cc, in isolate_freepages_block() argument
586 && compact_unlock_should_abort(&cc->zone->lock, flags, in isolate_freepages_block()
587 &locked, cc)) in isolate_freepages_block()
616 locked = compact_lock_irqsave(&cc->zone->lock, in isolate_freepages_block()
617 &flags, cc); in isolate_freepages_block()
633 cc->nr_freepages += isolated; in isolate_freepages_block()
636 if (!strict && cc->nr_migratepages <= cc->nr_freepages) { in isolate_freepages_block()
652 spin_unlock_irqrestore(&cc->zone->lock, flags); in isolate_freepages_block()
674 cc->total_free_scanned += nr_scanned; in isolate_freepages_block()
682 * @cc: Compaction control structure.
688 * undo its actions and return zero. cc->freepages[] are empty.
692 * a free page). cc->freepages[] contain free pages isolated.
695 isolate_freepages_range(struct compact_control *cc, in isolate_freepages_range() argument
702 INIT_LIST_HEAD(&cc->freepages[order]); in isolate_freepages_range()
706 if (block_start_pfn < cc->zone->zone_start_pfn) in isolate_freepages_range()
707 block_start_pfn = cc->zone->zone_start_pfn; in isolate_freepages_range()
729 block_end_pfn, cc->zone)) in isolate_freepages_range()
732 isolated = isolate_freepages_block(cc, &isolate_start_pfn, in isolate_freepages_range()
733 block_end_pfn, cc->freepages, 0, true); in isolate_freepages_range()
752 release_free_list(cc->freepages); in isolate_freepages_range()
761 static bool too_many_isolated(struct compact_control *cc) in too_many_isolated() argument
763 pg_data_t *pgdat = cc->zone->zone_pgdat; in too_many_isolated()
781 if (cc->gfp_mask & __GFP_FS) { in too_many_isolated()
822 * @cc: Compaction control structure.
831 * cc->migrate_pfn will contain the next pfn to scan.
833 * The pages are isolated on cc->migratepages list (not required to be empty),
834 * and cc->nr_migratepages is updated accordingly.
837 isolate_migratepages_block(struct compact_control *cc, unsigned long low_pfn, in isolate_migratepages_block() argument
840 pg_data_t *pgdat = cc->zone->zone_pgdat; in isolate_migratepages_block()
854 cc->migrate_pfn = low_pfn; in isolate_migratepages_block()
861 while (unlikely(too_many_isolated(cc))) { in isolate_migratepages_block()
863 if (cc->nr_migratepages) in isolate_migratepages_block()
867 if (cc->mode == MIGRATE_ASYNC) in isolate_migratepages_block()
878 if (cc->direct_compaction && (cc->mode == MIGRATE_ASYNC)) { in isolate_migratepages_block()
880 next_skip_pfn = block_end_pfn(low_pfn, cc->order); in isolate_migratepages_block()
906 next_skip_pfn = block_end_pfn(low_pfn, cc->order); in isolate_migratepages_block()
921 cc->contended = true; in isolate_migratepages_block()
941 low_pfn == cc->zone->zone_start_pfn)) { in isolate_migratepages_block()
942 if (!isolation_suitable(cc, page)) { in isolate_migratepages_block()
957 if (!cc->alloc_contig) { in isolate_migratepages_block()
972 ret = isolate_or_dissolve_huge_folio(folio, &cc->migratepages); in isolate_migratepages_block()
990 * on the cc->migratepages list. in isolate_migratepages_block()
1033 if (PageCompound(page) && !cc->alloc_contig) { in isolate_migratepages_block()
1037 if (skip_isolation_on_order(order, cc->order)) { in isolate_migratepages_block()
1091 if (!(cc->gfp_mask & __GFP_FS) && mapping) in isolate_migratepages_block()
1163 compact_lock_irqsave(&lruvec->lru_lock, &flags, cc); in isolate_migratepages_block()
1175 if (test_and_set_skip(cc, valid_page) && in isolate_migratepages_block()
1176 !cc->finish_pageblock) { in isolate_migratepages_block()
1186 cc->order) && in isolate_migratepages_block()
1187 !cc->alloc_contig)) { in isolate_migratepages_block()
1206 list_add(&folio->lru, &cc->migratepages); in isolate_migratepages_block()
1208 cc->nr_migratepages += folio_nr_pages(folio); in isolate_migratepages_block()
1218 if (cc->nr_migratepages >= COMPACT_CLUSTER_MAX && in isolate_migratepages_block()
1219 !cc->finish_pageblock && !cc->contended) { in isolate_migratepages_block()
1240 * instead of migrating, as we cannot form the cc->order buddy in isolate_migratepages_block()
1248 putback_movable_pages(&cc->migratepages); in isolate_migratepages_block()
1249 cc->nr_migratepages = 0; in isolate_migratepages_block()
1259 next_skip_pfn += 1UL << cc->order; in isolate_migratepages_block()
1291 if (low_pfn == end_pfn && (!nr_isolated || cc->finish_pageblock)) { in isolate_migratepages_block()
1292 if (!cc->no_set_skip_hint && valid_page && !skip_updated) in isolate_migratepages_block()
1294 update_cached_migrate(cc, low_pfn); in isolate_migratepages_block()
1301 cc->total_migrate_scanned += nr_scanned; in isolate_migratepages_block()
1305 cc->migrate_pfn = low_pfn; in isolate_migratepages_block()
1312 * @cc: Compaction control structure.
1320 isolate_migratepages_range(struct compact_control *cc, unsigned long start_pfn, in isolate_migratepages_range() argument
1329 if (block_start_pfn < cc->zone->zone_start_pfn) in isolate_migratepages_range()
1330 block_start_pfn = cc->zone->zone_start_pfn; in isolate_migratepages_range()
1340 block_end_pfn, cc->zone)) in isolate_migratepages_range()
1343 ret = isolate_migratepages_block(cc, pfn, block_end_pfn, in isolate_migratepages_range()
1349 if (cc->nr_migratepages >= COMPACT_CLUSTER_MAX) in isolate_migratepages_range()
1359 static bool suitable_migration_source(struct compact_control *cc, in suitable_migration_source() argument
1367 if ((cc->mode != MIGRATE_ASYNC) || !cc->direct_compaction) in suitable_migration_source()
1372 if (cc->migratetype == MIGRATE_MOVABLE) in suitable_migration_source()
1375 return block_mt == cc->migratetype; in suitable_migration_source()
1379 static bool suitable_migration_target(struct compact_control *cc, in suitable_migration_target() argument
1384 int order = cc->order > 0 ? cc->order : pageblock_order; in suitable_migration_target()
1395 if (cc->ignore_block_suitable) in suitable_migration_target()
1407 freelist_scan_limit(struct compact_control *cc) in freelist_scan_limit() argument
1411 return (COMPACT_CLUSTER_MAX >> min(shift, cc->fast_search_fail)) + 1; in freelist_scan_limit()
1418 static inline bool compact_scanners_met(struct compact_control *cc) in compact_scanners_met() argument
1420 return (cc->free_pfn >> pageblock_order) in compact_scanners_met()
1421 <= (cc->migrate_pfn >> pageblock_order); in compact_scanners_met()
1458 fast_isolate_around(struct compact_control *cc, unsigned long pfn) in fast_isolate_around() argument
1464 if (cc->nr_freepages >= cc->nr_migratepages) in fast_isolate_around()
1468 if (cc->direct_compaction && cc->mode == MIGRATE_ASYNC) in fast_isolate_around()
1472 start_pfn = max(pageblock_start_pfn(pfn), cc->zone->zone_start_pfn); in fast_isolate_around()
1473 end_pfn = min(pageblock_end_pfn(pfn), zone_end_pfn(cc->zone)); in fast_isolate_around()
1475 page = pageblock_pfn_to_page(start_pfn, end_pfn, cc->zone); in fast_isolate_around()
1479 isolate_freepages_block(cc, &start_pfn, end_pfn, cc->freepages, 1, false); in fast_isolate_around()
1482 if (start_pfn == end_pfn && !cc->no_set_skip_hint) in fast_isolate_around()
1487 static int next_search_order(struct compact_control *cc, int order) in next_search_order() argument
1491 order = cc->order - 1; in next_search_order()
1494 if (order == cc->search_order) { in next_search_order()
1495 cc->search_order--; in next_search_order()
1496 if (cc->search_order < 0) in next_search_order()
1497 cc->search_order = cc->order - 1; in next_search_order()
1504 static void fast_isolate_freepages(struct compact_control *cc) in fast_isolate_freepages() argument
1506 unsigned int limit = max(1U, freelist_scan_limit(cc) >> 1); in fast_isolate_freepages()
1516 if (cc->order <= 0) in fast_isolate_freepages()
1523 if (cc->free_pfn >= cc->zone->compact_init_free_pfn) { in fast_isolate_freepages()
1532 distance = (cc->free_pfn - cc->migrate_pfn); in fast_isolate_freepages()
1533 low_pfn = pageblock_start_pfn(cc->free_pfn - (distance >> 2)); in fast_isolate_freepages()
1534 min_pfn = pageblock_start_pfn(cc->free_pfn - (distance >> 1)); in fast_isolate_freepages()
1543 cc->search_order = min_t(unsigned int, cc->order - 1, cc->search_order); in fast_isolate_freepages()
1545 for (order = cc->search_order; in fast_isolate_freepages()
1547 order = next_search_order(cc, order)) { in fast_isolate_freepages()
1548 struct free_area *area = &cc->zone->free_area[order]; in fast_isolate_freepages()
1558 spin_lock_irqsave(&cc->zone->lock, flags); in fast_isolate_freepages()
1569 cc->zone->zone_start_pfn); in fast_isolate_freepages()
1572 cc->fast_search_fail = 0; in fast_isolate_freepages()
1573 cc->search_order = order; in fast_isolate_freepages()
1607 cc->nr_freepages += nr_isolated; in fast_isolate_freepages()
1608 list_add_tail(&page->lru, &cc->freepages[order]); in fast_isolate_freepages()
1612 order = cc->search_order + 1; in fast_isolate_freepages()
1617 spin_unlock_irqrestore(&cc->zone->lock, flags); in fast_isolate_freepages()
1620 if (cc->nr_freepages >= cc->nr_migratepages) in fast_isolate_freepages()
1631 trace_mm_compaction_fast_isolate_freepages(min_pfn, cc->free_pfn, in fast_isolate_freepages()
1635 cc->fast_search_fail++; in fast_isolate_freepages()
1644 cc->free_pfn = highest; in fast_isolate_freepages()
1646 if (cc->direct_compaction && pfn_valid(min_pfn)) { in fast_isolate_freepages()
1649 zone_end_pfn(cc->zone)), in fast_isolate_freepages()
1650 cc->zone); in fast_isolate_freepages()
1651 if (page && !suitable_migration_target(cc, page)) in fast_isolate_freepages()
1654 cc->free_pfn = min_pfn; in fast_isolate_freepages()
1660 if (highest && highest >= cc->zone->compact_cached_free_pfn) { in fast_isolate_freepages()
1662 cc->zone->compact_cached_free_pfn = highest; in fast_isolate_freepages()
1665 cc->total_free_scanned += nr_scanned; in fast_isolate_freepages()
1670 fast_isolate_around(cc, low_pfn); in fast_isolate_freepages()
1677 static void isolate_freepages(struct compact_control *cc) in isolate_freepages() argument
1679 struct zone *zone = cc->zone; in isolate_freepages()
1688 fast_isolate_freepages(cc); in isolate_freepages()
1689 if (cc->nr_freepages) in isolate_freepages()
1703 isolate_start_pfn = cc->free_pfn; in isolate_freepages()
1707 low_pfn = pageblock_end_pfn(cc->migrate_pfn); in isolate_freepages()
1708 stride = cc->mode == MIGRATE_ASYNC ? COMPACT_CLUSTER_MAX : 1; in isolate_freepages()
1712 * pages on cc->migratepages. We stop searching if the migrate in isolate_freepages()
1741 if (!suitable_migration_target(cc, page)) in isolate_freepages()
1745 if (!isolation_suitable(cc, page)) in isolate_freepages()
1749 nr_isolated = isolate_freepages_block(cc, &isolate_start_pfn, in isolate_freepages()
1750 block_end_pfn, cc->freepages, stride, false); in isolate_freepages()
1754 update_pageblock_skip(cc, page, block_start_pfn - in isolate_freepages()
1758 if (cc->nr_freepages >= cc->nr_migratepages) { in isolate_freepages()
1790 cc->free_pfn = isolate_start_pfn; in isolate_freepages()
1799 struct compact_control *cc = (struct compact_control *)data; in compaction_alloc_noprof() local
1809 if (!list_empty(&cc->freepages[start_order])) in compaction_alloc_noprof()
1816 isolate_freepages(cc); in compaction_alloc_noprof()
1821 freepage = list_first_entry(&cc->freepages[start_order], struct page, in compaction_alloc_noprof()
1831 list_add(&freepage[size].lru, &cc->freepages[start_order]); in compaction_alloc_noprof()
1840 cc->nr_freepages -= 1 << order; in compaction_alloc_noprof()
1841 cc->nr_migratepages -= 1 << order; in compaction_alloc_noprof()
1857 struct compact_control *cc = (struct compact_control *)data; in compaction_free() local
1863 list_add(&dst->lru, &cc->freepages[order]); in compaction_free()
1864 cc->nr_freepages += 1 << order; in compaction_free()
1866 cc->nr_migratepages += 1 << order; in compaction_free()
1895 update_fast_start_pfn(struct compact_control *cc, unsigned long pfn) in update_fast_start_pfn() argument
1897 if (cc->fast_start_pfn == ULONG_MAX) in update_fast_start_pfn()
1900 if (!cc->fast_start_pfn) in update_fast_start_pfn()
1901 cc->fast_start_pfn = pfn; in update_fast_start_pfn()
1903 cc->fast_start_pfn = min(cc->fast_start_pfn, pfn); in update_fast_start_pfn()
1907 reinit_migrate_pfn(struct compact_control *cc) in reinit_migrate_pfn() argument
1909 if (!cc->fast_start_pfn || cc->fast_start_pfn == ULONG_MAX) in reinit_migrate_pfn()
1910 return cc->migrate_pfn; in reinit_migrate_pfn()
1912 cc->migrate_pfn = cc->fast_start_pfn; in reinit_migrate_pfn()
1913 cc->fast_start_pfn = ULONG_MAX; in reinit_migrate_pfn()
1915 return cc->migrate_pfn; in reinit_migrate_pfn()
1923 static unsigned long fast_find_migrateblock(struct compact_control *cc) in fast_find_migrateblock() argument
1925 unsigned int limit = freelist_scan_limit(cc); in fast_find_migrateblock()
1928 unsigned long pfn = cc->migrate_pfn; in fast_find_migrateblock()
1934 if (cc->ignore_skip_hint) in fast_find_migrateblock()
1941 if (cc->finish_pageblock) in fast_find_migrateblock()
1949 if (pfn != cc->zone->zone_start_pfn && pfn != pageblock_start_pfn(pfn)) in fast_find_migrateblock()
1957 if (cc->order <= PAGE_ALLOC_COSTLY_ORDER) in fast_find_migrateblock()
1966 if (cc->direct_compaction && cc->migratetype != MIGRATE_MOVABLE) in fast_find_migrateblock()
1975 distance = (cc->free_pfn - cc->migrate_pfn) >> 1; in fast_find_migrateblock()
1976 if (cc->migrate_pfn != cc->zone->zone_start_pfn) in fast_find_migrateblock()
1978 high_pfn = pageblock_start_pfn(cc->migrate_pfn + distance); in fast_find_migrateblock()
1980 for (order = cc->order - 1; in fast_find_migrateblock()
1983 struct free_area *area = &cc->zone->free_area[order]; in fast_find_migrateblock()
1991 spin_lock_irqsave(&cc->zone->lock, flags); in fast_find_migrateblock()
2015 update_fast_start_pfn(cc, free_pfn); in fast_find_migrateblock()
2017 if (pfn < cc->zone->zone_start_pfn) in fast_find_migrateblock()
2018 pfn = cc->zone->zone_start_pfn; in fast_find_migrateblock()
2019 cc->fast_search_fail = 0; in fast_find_migrateblock()
2024 spin_unlock_irqrestore(&cc->zone->lock, flags); in fast_find_migrateblock()
2027 cc->total_migrate_scanned += nr_scanned; in fast_find_migrateblock()
2034 cc->fast_search_fail++; in fast_find_migrateblock()
2035 pfn = reinit_migrate_pfn(cc); in fast_find_migrateblock()
2045 static isolate_migrate_t isolate_migratepages(struct compact_control *cc) in isolate_migratepages() argument
2053 (cc->mode != MIGRATE_SYNC ? ISOLATE_ASYNC_MIGRATE : 0); in isolate_migratepages()
2061 low_pfn = fast_find_migrateblock(cc); in isolate_migratepages()
2063 if (block_start_pfn < cc->zone->zone_start_pfn) in isolate_migratepages()
2064 block_start_pfn = cc->zone->zone_start_pfn; in isolate_migratepages()
2071 fast_find_block = low_pfn != cc->migrate_pfn && !cc->fast_search_fail; in isolate_migratepages()
2080 for (; block_end_pfn <= cc->free_pfn; in isolate_migratepages()
2082 cc->migrate_pfn = low_pfn = block_end_pfn, in isolate_migratepages()
2095 block_end_pfn, cc->zone); in isolate_migratepages()
2101 block_end_pfn = min(next_pfn, cc->free_pfn); in isolate_migratepages()
2113 low_pfn == cc->zone->zone_start_pfn) && in isolate_migratepages()
2114 !fast_find_block && !isolation_suitable(cc, page)) in isolate_migratepages()
2125 if (!suitable_migration_source(cc, page)) { in isolate_migratepages()
2126 update_cached_migrate(cc, block_end_pfn); in isolate_migratepages()
2131 if (isolate_migratepages_block(cc, low_pfn, block_end_pfn, in isolate_migratepages()
2143 return cc->nr_migratepages ? ISOLATE_SUCCESS : ISOLATE_NONE; in isolate_migratepages()
2234 static enum compact_result __compact_finished(struct compact_control *cc) in __compact_finished() argument
2237 const int migratetype = cc->migratetype; in __compact_finished()
2241 if (compact_scanners_met(cc)) { in __compact_finished()
2243 reset_cached_positions(cc->zone); in __compact_finished()
2251 if (cc->direct_compaction) in __compact_finished()
2252 cc->zone->compact_blockskip_flush = true; in __compact_finished()
2254 if (cc->whole_zone) in __compact_finished()
2260 if (cc->proactive_compaction) { in __compact_finished()
2264 pgdat = cc->zone->zone_pgdat; in __compact_finished()
2268 score = fragmentation_score_zone(cc->zone); in __compact_finished()
2279 if (is_via_compact_memory(cc->order)) in __compact_finished()
2288 if (!pageblock_aligned(cc->migrate_pfn)) in __compact_finished()
2296 if (defrag_mode && !cc->direct_compaction) { in __compact_finished()
2297 if (__zone_watermark_ok(cc->zone, cc->order, in __compact_finished()
2298 high_wmark_pages(cc->zone), in __compact_finished()
2299 cc->highest_zoneidx, cc->alloc_flags, in __compact_finished()
2300 zone_page_state(cc->zone, in __compact_finished()
2309 for (order = cc->order; order < NR_PAGE_ORDERS; order++) { in __compact_finished()
2310 struct free_area *area = &cc->zone->free_area[order]; in __compact_finished()
2339 if (cc->contended || fatal_signal_pending(current)) in __compact_finished()
2345 static enum compact_result compact_finished(struct compact_control *cc) in compact_finished() argument
2349 ret = __compact_finished(cc); in compact_finished()
2350 trace_mm_compaction_finished(cc->zone, cc->order, ret); in compact_finished()
2511 compact_zone(struct compact_control *cc, struct capture_control *capc) in compact_zone() argument
2514 unsigned long start_pfn = cc->zone->zone_start_pfn; in compact_zone()
2515 unsigned long end_pfn = zone_end_pfn(cc->zone); in compact_zone()
2517 const bool sync = cc->mode != MIGRATE_ASYNC; in compact_zone()
2526 cc->total_migrate_scanned = 0; in compact_zone()
2527 cc->total_free_scanned = 0; in compact_zone()
2528 cc->nr_migratepages = 0; in compact_zone()
2529 cc->nr_freepages = 0; in compact_zone()
2531 INIT_LIST_HEAD(&cc->freepages[order]); in compact_zone()
2532 INIT_LIST_HEAD(&cc->migratepages); in compact_zone()
2534 cc->migratetype = gfp_migratetype(cc->gfp_mask); in compact_zone()
2536 if (!is_via_compact_memory(cc->order)) { in compact_zone()
2537 ret = compaction_suit_allocation_order(cc->zone, cc->order, in compact_zone()
2538 cc->highest_zoneidx, in compact_zone()
2539 cc->alloc_flags, in compact_zone()
2540 cc->mode == MIGRATE_ASYNC, in compact_zone()
2541 !cc->direct_compaction); in compact_zone()
2550 if (compaction_restarting(cc->zone, cc->order)) in compact_zone()
2551 __reset_isolation_suitable(cc->zone); in compact_zone()
2559 cc->fast_start_pfn = 0; in compact_zone()
2560 if (cc->whole_zone) { in compact_zone()
2561 cc->migrate_pfn = start_pfn; in compact_zone()
2562 cc->free_pfn = pageblock_start_pfn(end_pfn - 1); in compact_zone()
2564 cc->migrate_pfn = cc->zone->compact_cached_migrate_pfn[sync]; in compact_zone()
2565 cc->free_pfn = cc->zone->compact_cached_free_pfn; in compact_zone()
2566 if (cc->free_pfn < start_pfn || cc->free_pfn >= end_pfn) { in compact_zone()
2567 cc->free_pfn = pageblock_start_pfn(end_pfn - 1); in compact_zone()
2568 cc->zone->compact_cached_free_pfn = cc->free_pfn; in compact_zone()
2570 if (cc->migrate_pfn < start_pfn || cc->migrate_pfn >= end_pfn) { in compact_zone()
2571 cc->migrate_pfn = start_pfn; in compact_zone()
2572 cc->zone->compact_cached_migrate_pfn[0] = cc->migrate_pfn; in compact_zone()
2573 cc->zone->compact_cached_migrate_pfn[1] = cc->migrate_pfn; in compact_zone()
2576 if (cc->migrate_pfn <= cc->zone->compact_init_migrate_pfn) in compact_zone()
2577 cc->whole_zone = true; in compact_zone()
2591 cc->zone->compact_cached_migrate_pfn[0] == cc->zone->compact_cached_migrate_pfn[1]; in compact_zone()
2593 trace_mm_compaction_begin(cc, start_pfn, end_pfn, sync); in compact_zone()
2598 while ((ret = compact_finished(cc)) == COMPACT_CONTINUE) { in compact_zone()
2600 unsigned long iteration_start_pfn = cc->migrate_pfn; in compact_zone()
2610 cc->finish_pageblock = false; in compact_zone()
2613 cc->finish_pageblock = true; in compact_zone()
2617 switch (isolate_migratepages(cc)) { in compact_zone()
2620 putback_movable_pages(&cc->migratepages); in compact_zone()
2621 cc->nr_migratepages = 0; in compact_zone()
2625 cc->zone->compact_cached_migrate_pfn[1] = in compact_zone()
2626 cc->zone->compact_cached_migrate_pfn[0]; in compact_zone()
2632 * previous cc->order aligned block. in compact_zone()
2637 last_migrated_pfn = max(cc->zone->zone_start_pfn, in compact_zone()
2638 pageblock_start_pfn(cc->migrate_pfn - 1)); in compact_zone()
2643 * compaction_alloc/free() will update cc->nr_migratepages in compact_zone()
2646 nr_migratepages = cc->nr_migratepages; in compact_zone()
2647 err = migrate_pages(&cc->migratepages, compaction_alloc, in compact_zone()
2648 compaction_free, (unsigned long)cc, cc->mode, in compact_zone()
2654 cc->nr_migratepages = 0; in compact_zone()
2656 putback_movable_pages(&cc->migratepages); in compact_zone()
2661 if (err == -ENOMEM && !compact_scanners_met(cc)) { in compact_zone()
2676 if (!pageblock_aligned(cc->migrate_pfn) && in compact_zone()
2677 !cc->ignore_skip_hint && !cc->finish_pageblock && in compact_zone()
2678 (cc->mode < MIGRATE_SYNC)) { in compact_zone()
2679 cc->finish_pageblock = true; in compact_zone()
2686 if (cc->order == COMPACTION_HPAGE_ORDER) in compact_zone()
2702 * cc->order aligned block where we migrated from? If yes, in compact_zone()
2707 if (cc->order > 0 && last_migrated_pfn) { in compact_zone()
2709 block_start_pfn(cc->migrate_pfn, cc->order); in compact_zone()
2712 lru_add_drain_cpu_zone(cc->zone); in compact_zone()
2724 if (cc->nr_freepages > 0) { in compact_zone()
2725 unsigned long free_pfn = release_free_list(cc->freepages); in compact_zone()
2727 cc->nr_freepages = 0; in compact_zone()
2735 if (free_pfn > cc->zone->compact_cached_free_pfn) in compact_zone()
2736 cc->zone->compact_cached_free_pfn = free_pfn; in compact_zone()
2739 count_compact_events(COMPACTMIGRATE_SCANNED, cc->total_migrate_scanned); in compact_zone()
2740 count_compact_events(COMPACTFREE_SCANNED, cc->total_free_scanned); in compact_zone()
2742 trace_mm_compaction_end(cc, start_pfn, end_pfn, sync, ret); in compact_zone()
2744 VM_BUG_ON(!list_empty(&cc->migratepages)); in compact_zone()
2755 struct compact_control cc = { in compact_zone_order() local
2770 .cc = &cc, in compact_zone_order()
2782 ret = compact_zone(&cc, &capc); in compact_zone_order()
2897 struct compact_control cc = { in compact_node() local
2914 cc.zone = zone; in compact_node()
2916 compact_zone(&cc, NULL); in compact_node()
2920 cc.total_migrate_scanned); in compact_node()
2922 cc.total_free_scanned); in compact_node()
3063 struct compact_control cc = { in kcompactd_do_work() local
3074 trace_mm_compaction_kcompactd_wake(pgdat->node_id, cc.order, in kcompactd_do_work()
3075 cc.highest_zoneidx); in kcompactd_do_work()
3078 for (zoneid = 0; zoneid <= cc.highest_zoneidx; zoneid++) { in kcompactd_do_work()
3085 if (compaction_deferred(zone, cc.order)) in kcompactd_do_work()
3089 cc.order, zoneid, cc.alloc_flags, in kcompactd_do_work()
3097 cc.zone = zone; in kcompactd_do_work()
3098 status = compact_zone(&cc, NULL); in kcompactd_do_work()
3101 compaction_defer_reset(zone, cc.order, false); in kcompactd_do_work()
3106 * order >= cc.order. This is ratelimited by the in kcompactd_do_work()
3115 defer_compaction(zone, cc.order); in kcompactd_do_work()
3119 cc.total_migrate_scanned); in kcompactd_do_work()
3121 cc.total_free_scanned); in kcompactd_do_work()
3129 if (pgdat->kcompactd_max_order <= cc.order) in kcompactd_do_work()
3131 if (pgdat->kcompactd_highest_zoneidx >= cc.highest_zoneidx) in kcompactd_do_work()