Lines Matching refs:cc
215 static inline bool isolation_suitable(struct compact_control *cc, in isolation_suitable() argument
218 if (cc->ignore_skip_hint) in isolation_suitable()
447 static bool test_and_set_skip(struct compact_control *cc, struct page *page) in test_and_set_skip() argument
452 if (cc->ignore_skip_hint) in test_and_set_skip()
456 if (!skip && !cc->no_set_skip_hint) in test_and_set_skip()
462 static void update_cached_migrate(struct compact_control *cc, unsigned long pfn) in update_cached_migrate() argument
464 struct zone *zone = cc->zone; in update_cached_migrate()
467 if (cc->no_set_skip_hint) in update_cached_migrate()
475 if (cc->mode != MIGRATE_ASYNC && in update_cached_migrate()
484 static void update_pageblock_skip(struct compact_control *cc, in update_pageblock_skip() argument
487 struct zone *zone = cc->zone; in update_pageblock_skip()
489 if (cc->no_set_skip_hint) in update_pageblock_skip()
498 static inline bool isolation_suitable(struct compact_control *cc, in isolation_suitable() argument
509 static inline void update_pageblock_skip(struct compact_control *cc, in update_pageblock_skip() argument
514 static void update_cached_migrate(struct compact_control *cc, unsigned long pfn) in update_cached_migrate() argument
518 static bool test_and_set_skip(struct compact_control *cc, struct page *page) in test_and_set_skip() argument
534 struct compact_control *cc) in compact_lock_irqsave() argument
538 if (cc->mode == MIGRATE_ASYNC && !cc->contended) { in compact_lock_irqsave()
542 cc->contended = true; in compact_lock_irqsave()
562 unsigned long flags, bool *locked, struct compact_control *cc) in compact_unlock_should_abort() argument
570 cc->contended = true; in compact_unlock_should_abort()
584 static unsigned long isolate_freepages_block(struct compact_control *cc, in isolate_freepages_block() argument
614 && compact_unlock_should_abort(&cc->zone->lock, flags, in isolate_freepages_block()
615 &locked, cc)) in isolate_freepages_block()
642 locked = compact_lock_irqsave(&cc->zone->lock, in isolate_freepages_block()
643 &flags, cc); in isolate_freepages_block()
659 cc->nr_freepages += isolated; in isolate_freepages_block()
662 if (!strict && cc->nr_migratepages <= cc->nr_freepages) { in isolate_freepages_block()
678 spin_unlock_irqrestore(&cc->zone->lock, flags); in isolate_freepages_block()
701 cc->total_free_scanned += nr_scanned; in isolate_freepages_block()
722 isolate_freepages_range(struct compact_control *cc, in isolate_freepages_range() argument
730 if (block_start_pfn < cc->zone->zone_start_pfn) in isolate_freepages_range()
731 block_start_pfn = cc->zone->zone_start_pfn; in isolate_freepages_range()
753 block_end_pfn, cc->zone)) in isolate_freepages_range()
756 isolated = isolate_freepages_block(cc, &isolate_start_pfn, in isolate_freepages_range()
788 static bool too_many_isolated(struct compact_control *cc) in too_many_isolated() argument
790 pg_data_t *pgdat = cc->zone->zone_pgdat; in too_many_isolated()
808 if (cc->gfp_mask & __GFP_FS) { in too_many_isolated()
838 isolate_migratepages_block(struct compact_control *cc, unsigned long low_pfn, in isolate_migratepages_block() argument
841 pg_data_t *pgdat = cc->zone->zone_pgdat; in isolate_migratepages_block()
855 cc->migrate_pfn = low_pfn; in isolate_migratepages_block()
862 while (unlikely(too_many_isolated(cc))) { in isolate_migratepages_block()
864 if (cc->nr_migratepages) in isolate_migratepages_block()
868 if (cc->mode == MIGRATE_ASYNC) in isolate_migratepages_block()
879 if (cc->direct_compaction && (cc->mode == MIGRATE_ASYNC)) { in isolate_migratepages_block()
881 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()
950 if (PageHuge(page) && cc->alloc_contig) { in isolate_migratepages_block()
956 ret = isolate_or_dissolve_huge_page(page, &cc->migratepages); in isolate_migratepages_block()
1018 if (PageCompound(page) && !cc->alloc_contig) { in isolate_migratepages_block()
1076 if (!(cc->gfp_mask & __GFP_FS) && mapping) in isolate_migratepages_block()
1130 compact_lock_irqsave(&lruvec->lru_lock, &flags, cc); in isolate_migratepages_block()
1142 if (test_and_set_skip(cc, valid_page) && in isolate_migratepages_block()
1143 !cc->finish_pageblock) { in isolate_migratepages_block()
1153 if (unlikely(folio_test_large(folio) && !cc->alloc_contig)) { in isolate_migratepages_block()
1172 list_add(&folio->lru, &cc->migratepages); in isolate_migratepages_block()
1174 cc->nr_migratepages += folio_nr_pages(folio); in isolate_migratepages_block()
1184 if (cc->nr_migratepages >= COMPACT_CLUSTER_MAX && in isolate_migratepages_block()
1185 !cc->finish_pageblock && !cc->contended) { in isolate_migratepages_block()
1214 putback_movable_pages(&cc->migratepages); in isolate_migratepages_block()
1215 cc->nr_migratepages = 0; in isolate_migratepages_block()
1225 next_skip_pfn += 1UL << cc->order; in isolate_migratepages_block()
1257 if (low_pfn == end_pfn && (!nr_isolated || cc->finish_pageblock)) { in isolate_migratepages_block()
1258 if (!cc->no_set_skip_hint && valid_page && !skip_updated) in isolate_migratepages_block()
1260 update_cached_migrate(cc, low_pfn); in isolate_migratepages_block()
1267 cc->total_migrate_scanned += nr_scanned; in isolate_migratepages_block()
1271 cc->migrate_pfn = low_pfn; in isolate_migratepages_block()
1286 isolate_migratepages_range(struct compact_control *cc, unsigned long start_pfn, in isolate_migratepages_range() argument
1295 if (block_start_pfn < cc->zone->zone_start_pfn) in isolate_migratepages_range()
1296 block_start_pfn = cc->zone->zone_start_pfn; in isolate_migratepages_range()
1306 block_end_pfn, cc->zone)) in isolate_migratepages_range()
1309 ret = isolate_migratepages_block(cc, pfn, block_end_pfn, in isolate_migratepages_range()
1315 if (cc->nr_migratepages >= COMPACT_CLUSTER_MAX) in isolate_migratepages_range()
1325 static bool suitable_migration_source(struct compact_control *cc, in suitable_migration_source() argument
1333 if ((cc->mode != MIGRATE_ASYNC) || !cc->direct_compaction) in suitable_migration_source()
1338 if (cc->migratetype == MIGRATE_MOVABLE) in suitable_migration_source()
1341 return block_mt == cc->migratetype; in suitable_migration_source()
1345 static bool suitable_migration_target(struct compact_control *cc, in suitable_migration_target() argument
1359 if (cc->ignore_block_suitable) in suitable_migration_target()
1371 freelist_scan_limit(struct compact_control *cc) in freelist_scan_limit() argument
1375 return (COMPACT_CLUSTER_MAX >> min(shift, cc->fast_search_fail)) + 1; in freelist_scan_limit()
1382 static inline bool compact_scanners_met(struct compact_control *cc) in compact_scanners_met() argument
1384 return (cc->free_pfn >> pageblock_order) in compact_scanners_met()
1385 <= (cc->migrate_pfn >> pageblock_order); in compact_scanners_met()
1422 fast_isolate_around(struct compact_control *cc, unsigned long pfn) in fast_isolate_around() argument
1428 if (cc->nr_freepages >= cc->nr_migratepages) in fast_isolate_around()
1432 if (cc->direct_compaction && cc->mode == MIGRATE_ASYNC) in fast_isolate_around()
1436 start_pfn = max(pageblock_start_pfn(pfn), cc->zone->zone_start_pfn); in fast_isolate_around()
1437 end_pfn = min(pageblock_end_pfn(pfn), zone_end_pfn(cc->zone)); in fast_isolate_around()
1439 page = pageblock_pfn_to_page(start_pfn, end_pfn, cc->zone); in fast_isolate_around()
1443 isolate_freepages_block(cc, &start_pfn, end_pfn, &cc->freepages, 1, false); in fast_isolate_around()
1446 if (start_pfn == end_pfn && !cc->no_set_skip_hint) in fast_isolate_around()
1451 static int next_search_order(struct compact_control *cc, int order) in next_search_order() argument
1455 order = cc->order - 1; in next_search_order()
1458 if (order == cc->search_order) { in next_search_order()
1459 cc->search_order--; in next_search_order()
1460 if (cc->search_order < 0) in next_search_order()
1461 cc->search_order = cc->order - 1; in next_search_order()
1468 static void fast_isolate_freepages(struct compact_control *cc) in fast_isolate_freepages() argument
1470 unsigned int limit = max(1U, freelist_scan_limit(cc) >> 1); in fast_isolate_freepages()
1480 if (cc->order <= 0) in fast_isolate_freepages()
1487 if (cc->free_pfn >= cc->zone->compact_init_free_pfn) { in fast_isolate_freepages()
1496 distance = (cc->free_pfn - cc->migrate_pfn); in fast_isolate_freepages()
1497 low_pfn = pageblock_start_pfn(cc->free_pfn - (distance >> 2)); in fast_isolate_freepages()
1498 min_pfn = pageblock_start_pfn(cc->free_pfn - (distance >> 1)); in fast_isolate_freepages()
1507 cc->search_order = min_t(unsigned int, cc->order - 1, cc->search_order); in fast_isolate_freepages()
1509 for (order = cc->search_order; in fast_isolate_freepages()
1511 order = next_search_order(cc, order)) { in fast_isolate_freepages()
1512 struct free_area *area = &cc->zone->free_area[order]; in fast_isolate_freepages()
1522 spin_lock_irqsave(&cc->zone->lock, flags); in fast_isolate_freepages()
1533 cc->zone->zone_start_pfn); in fast_isolate_freepages()
1536 cc->fast_search_fail = 0; in fast_isolate_freepages()
1537 cc->search_order = order; in fast_isolate_freepages()
1571 cc->nr_freepages += nr_isolated; in fast_isolate_freepages()
1572 list_add_tail(&page->lru, &cc->freepages); in fast_isolate_freepages()
1576 order = cc->search_order + 1; in fast_isolate_freepages()
1581 spin_unlock_irqrestore(&cc->zone->lock, flags); in fast_isolate_freepages()
1584 if (cc->nr_freepages >= cc->nr_migratepages) in fast_isolate_freepages()
1595 trace_mm_compaction_fast_isolate_freepages(min_pfn, cc->free_pfn, in fast_isolate_freepages()
1599 cc->fast_search_fail++; in fast_isolate_freepages()
1608 cc->free_pfn = highest; in fast_isolate_freepages()
1610 if (cc->direct_compaction && pfn_valid(min_pfn)) { in fast_isolate_freepages()
1613 zone_end_pfn(cc->zone)), in fast_isolate_freepages()
1614 cc->zone); in fast_isolate_freepages()
1615 cc->free_pfn = min_pfn; in fast_isolate_freepages()
1621 if (highest && highest >= cc->zone->compact_cached_free_pfn) { in fast_isolate_freepages()
1623 cc->zone->compact_cached_free_pfn = highest; in fast_isolate_freepages()
1626 cc->total_free_scanned += nr_scanned; in fast_isolate_freepages()
1631 fast_isolate_around(cc, low_pfn); in fast_isolate_freepages()
1638 static void isolate_freepages(struct compact_control *cc) in isolate_freepages() argument
1640 struct zone *zone = cc->zone; in isolate_freepages()
1646 struct list_head *freelist = &cc->freepages; in isolate_freepages()
1650 fast_isolate_freepages(cc); in isolate_freepages()
1651 if (cc->nr_freepages) in isolate_freepages()
1665 isolate_start_pfn = cc->free_pfn; in isolate_freepages()
1669 low_pfn = pageblock_end_pfn(cc->migrate_pfn); in isolate_freepages()
1670 stride = cc->mode == MIGRATE_ASYNC ? COMPACT_CLUSTER_MAX : 1; in isolate_freepages()
1703 if (!suitable_migration_target(cc, page)) in isolate_freepages()
1707 if (!isolation_suitable(cc, page)) in isolate_freepages()
1711 nr_isolated = isolate_freepages_block(cc, &isolate_start_pfn, in isolate_freepages()
1716 update_pageblock_skip(cc, page, block_start_pfn - in isolate_freepages()
1720 if (cc->nr_freepages >= cc->nr_migratepages) { in isolate_freepages()
1752 cc->free_pfn = isolate_start_pfn; in isolate_freepages()
1765 struct compact_control *cc = (struct compact_control *)data; in compaction_alloc() local
1768 if (list_empty(&cc->freepages)) { in compaction_alloc()
1769 isolate_freepages(cc); in compaction_alloc()
1771 if (list_empty(&cc->freepages)) in compaction_alloc()
1775 dst = list_entry(cc->freepages.next, struct folio, lru); in compaction_alloc()
1777 cc->nr_freepages--; in compaction_alloc()
1789 struct compact_control *cc = (struct compact_control *)data; in compaction_free() local
1791 list_add(&dst->lru, &cc->freepages); in compaction_free()
1792 cc->nr_freepages++; in compaction_free()
1817 update_fast_start_pfn(struct compact_control *cc, unsigned long pfn) in update_fast_start_pfn() argument
1819 if (cc->fast_start_pfn == ULONG_MAX) in update_fast_start_pfn()
1822 if (!cc->fast_start_pfn) in update_fast_start_pfn()
1823 cc->fast_start_pfn = pfn; in update_fast_start_pfn()
1825 cc->fast_start_pfn = min(cc->fast_start_pfn, pfn); in update_fast_start_pfn()
1829 reinit_migrate_pfn(struct compact_control *cc) in reinit_migrate_pfn() argument
1831 if (!cc->fast_start_pfn || cc->fast_start_pfn == ULONG_MAX) in reinit_migrate_pfn()
1832 return cc->migrate_pfn; in reinit_migrate_pfn()
1834 cc->migrate_pfn = cc->fast_start_pfn; in reinit_migrate_pfn()
1835 cc->fast_start_pfn = ULONG_MAX; in reinit_migrate_pfn()
1837 return cc->migrate_pfn; in reinit_migrate_pfn()
1845 static unsigned long fast_find_migrateblock(struct compact_control *cc) in fast_find_migrateblock() argument
1847 unsigned int limit = freelist_scan_limit(cc); in fast_find_migrateblock()
1850 unsigned long pfn = cc->migrate_pfn; in fast_find_migrateblock()
1856 if (cc->ignore_skip_hint) in fast_find_migrateblock()
1863 if (cc->finish_pageblock) in fast_find_migrateblock()
1871 if (pfn != cc->zone->zone_start_pfn && pfn != pageblock_start_pfn(pfn)) in fast_find_migrateblock()
1879 if (cc->order <= PAGE_ALLOC_COSTLY_ORDER) in fast_find_migrateblock()
1888 if (cc->direct_compaction && cc->migratetype != MIGRATE_MOVABLE) in fast_find_migrateblock()
1897 distance = (cc->free_pfn - cc->migrate_pfn) >> 1; in fast_find_migrateblock()
1898 if (cc->migrate_pfn != cc->zone->zone_start_pfn) in fast_find_migrateblock()
1900 high_pfn = pageblock_start_pfn(cc->migrate_pfn + distance); in fast_find_migrateblock()
1902 for (order = cc->order - 1; in fast_find_migrateblock()
1905 struct free_area *area = &cc->zone->free_area[order]; in fast_find_migrateblock()
1913 spin_lock_irqsave(&cc->zone->lock, flags); in fast_find_migrateblock()
1937 update_fast_start_pfn(cc, free_pfn); in fast_find_migrateblock()
1939 if (pfn < cc->zone->zone_start_pfn) in fast_find_migrateblock()
1940 pfn = cc->zone->zone_start_pfn; in fast_find_migrateblock()
1941 cc->fast_search_fail = 0; in fast_find_migrateblock()
1946 spin_unlock_irqrestore(&cc->zone->lock, flags); in fast_find_migrateblock()
1949 cc->total_migrate_scanned += nr_scanned; in fast_find_migrateblock()
1956 cc->fast_search_fail++; in fast_find_migrateblock()
1957 pfn = reinit_migrate_pfn(cc); in fast_find_migrateblock()
1967 static isolate_migrate_t isolate_migratepages(struct compact_control *cc) in isolate_migratepages() argument
1975 (cc->mode != MIGRATE_SYNC ? ISOLATE_ASYNC_MIGRATE : 0); in isolate_migratepages()
1983 low_pfn = fast_find_migrateblock(cc); in isolate_migratepages()
1985 if (block_start_pfn < cc->zone->zone_start_pfn) in isolate_migratepages()
1986 block_start_pfn = cc->zone->zone_start_pfn; in isolate_migratepages()
1993 fast_find_block = low_pfn != cc->migrate_pfn && !cc->fast_search_fail; in isolate_migratepages()
2002 for (; block_end_pfn <= cc->free_pfn; in isolate_migratepages()
2004 cc->migrate_pfn = low_pfn = block_end_pfn, in isolate_migratepages()
2017 block_end_pfn, cc->zone); in isolate_migratepages()
2023 block_end_pfn = min(next_pfn, cc->free_pfn); in isolate_migratepages()
2035 low_pfn == cc->zone->zone_start_pfn) && in isolate_migratepages()
2036 !fast_find_block && !isolation_suitable(cc, page)) in isolate_migratepages()
2047 if (!suitable_migration_source(cc, page)) { in isolate_migratepages()
2048 update_cached_migrate(cc, block_end_pfn); in isolate_migratepages()
2053 if (isolate_migratepages_block(cc, low_pfn, block_end_pfn, in isolate_migratepages()
2065 return cc->nr_migratepages ? ISOLATE_SUCCESS : ISOLATE_NONE; in isolate_migratepages()
2169 static enum compact_result __compact_finished(struct compact_control *cc) in __compact_finished() argument
2172 const int migratetype = cc->migratetype; in __compact_finished()
2176 if (compact_scanners_met(cc)) { in __compact_finished()
2178 reset_cached_positions(cc->zone); in __compact_finished()
2186 if (cc->direct_compaction) in __compact_finished()
2187 cc->zone->compact_blockskip_flush = true; in __compact_finished()
2189 if (cc->whole_zone) in __compact_finished()
2195 if (cc->proactive_compaction) { in __compact_finished()
2199 pgdat = cc->zone->zone_pgdat; in __compact_finished()
2203 score = fragmentation_score_zone(cc->zone); in __compact_finished()
2214 if (is_via_compact_memory(cc->order)) in __compact_finished()
2223 if (!pageblock_aligned(cc->migrate_pfn)) in __compact_finished()
2228 for (order = cc->order; order < NR_PAGE_ORDERS; order++) { in __compact_finished()
2229 struct free_area *area = &cc->zone->free_area[order]; in __compact_finished()
2260 if (cc->contended || fatal_signal_pending(current)) in __compact_finished()
2266 static enum compact_result compact_finished(struct compact_control *cc) in compact_finished() argument
2270 ret = __compact_finished(cc); in compact_finished()
2271 trace_mm_compaction_finished(cc->zone, cc->order, ret); in compact_finished()
2381 compact_zone(struct compact_control *cc, struct capture_control *capc) in compact_zone() argument
2384 unsigned long start_pfn = cc->zone->zone_start_pfn; in compact_zone()
2385 unsigned long end_pfn = zone_end_pfn(cc->zone); in compact_zone()
2387 const bool sync = cc->mode != MIGRATE_ASYNC; in compact_zone()
2395 cc->total_migrate_scanned = 0; in compact_zone()
2396 cc->total_free_scanned = 0; in compact_zone()
2397 cc->nr_migratepages = 0; in compact_zone()
2398 cc->nr_freepages = 0; in compact_zone()
2399 INIT_LIST_HEAD(&cc->freepages); in compact_zone()
2400 INIT_LIST_HEAD(&cc->migratepages); in compact_zone()
2402 cc->migratetype = gfp_migratetype(cc->gfp_mask); in compact_zone()
2404 if (!is_via_compact_memory(cc->order)) { in compact_zone()
2408 watermark = wmark_pages(cc->zone, in compact_zone()
2409 cc->alloc_flags & ALLOC_WMARK_MASK); in compact_zone()
2410 if (zone_watermark_ok(cc->zone, cc->order, watermark, in compact_zone()
2411 cc->highest_zoneidx, cc->alloc_flags)) in compact_zone()
2415 if (!compaction_suitable(cc->zone, cc->order, in compact_zone()
2416 cc->highest_zoneidx)) in compact_zone()
2424 if (compaction_restarting(cc->zone, cc->order)) in compact_zone()
2425 __reset_isolation_suitable(cc->zone); in compact_zone()
2433 cc->fast_start_pfn = 0; in compact_zone()
2434 if (cc->whole_zone) { in compact_zone()
2435 cc->migrate_pfn = start_pfn; in compact_zone()
2436 cc->free_pfn = pageblock_start_pfn(end_pfn - 1); in compact_zone()
2438 cc->migrate_pfn = cc->zone->compact_cached_migrate_pfn[sync]; in compact_zone()
2439 cc->free_pfn = cc->zone->compact_cached_free_pfn; in compact_zone()
2440 if (cc->free_pfn < start_pfn || cc->free_pfn >= end_pfn) { in compact_zone()
2441 cc->free_pfn = pageblock_start_pfn(end_pfn - 1); in compact_zone()
2442 cc->zone->compact_cached_free_pfn = cc->free_pfn; in compact_zone()
2444 if (cc->migrate_pfn < start_pfn || cc->migrate_pfn >= end_pfn) { in compact_zone()
2445 cc->migrate_pfn = start_pfn; in compact_zone()
2446 cc->zone->compact_cached_migrate_pfn[0] = cc->migrate_pfn; in compact_zone()
2447 cc->zone->compact_cached_migrate_pfn[1] = cc->migrate_pfn; in compact_zone()
2450 if (cc->migrate_pfn <= cc->zone->compact_init_migrate_pfn) in compact_zone()
2451 cc->whole_zone = true; in compact_zone()
2465 cc->zone->compact_cached_migrate_pfn[0] == cc->zone->compact_cached_migrate_pfn[1]; in compact_zone()
2467 trace_mm_compaction_begin(cc, start_pfn, end_pfn, sync); in compact_zone()
2472 while ((ret = compact_finished(cc)) == COMPACT_CONTINUE) { in compact_zone()
2474 unsigned long iteration_start_pfn = cc->migrate_pfn; in compact_zone()
2484 cc->finish_pageblock = false; in compact_zone()
2487 cc->finish_pageblock = true; in compact_zone()
2491 switch (isolate_migratepages(cc)) { in compact_zone()
2494 putback_movable_pages(&cc->migratepages); in compact_zone()
2495 cc->nr_migratepages = 0; in compact_zone()
2499 cc->zone->compact_cached_migrate_pfn[1] = in compact_zone()
2500 cc->zone->compact_cached_migrate_pfn[0]; in compact_zone()
2511 last_migrated_pfn = max(cc->zone->zone_start_pfn, in compact_zone()
2512 pageblock_start_pfn(cc->migrate_pfn - 1)); in compact_zone()
2515 err = migrate_pages(&cc->migratepages, compaction_alloc, in compact_zone()
2516 compaction_free, (unsigned long)cc, cc->mode, in compact_zone()
2519 trace_mm_compaction_migratepages(cc, nr_succeeded); in compact_zone()
2522 cc->nr_migratepages = 0; in compact_zone()
2524 putback_movable_pages(&cc->migratepages); in compact_zone()
2529 if (err == -ENOMEM && !compact_scanners_met(cc)) { in compact_zone()
2544 if (!pageblock_aligned(cc->migrate_pfn) && in compact_zone()
2545 !cc->ignore_skip_hint && !cc->finish_pageblock && in compact_zone()
2546 (cc->mode < MIGRATE_SYNC)) { in compact_zone()
2547 cc->finish_pageblock = true; in compact_zone()
2554 if (cc->order == COMPACTION_HPAGE_ORDER) in compact_zone()
2575 if (cc->order > 0 && last_migrated_pfn) { in compact_zone()
2577 block_start_pfn(cc->migrate_pfn, cc->order); in compact_zone()
2580 lru_add_drain_cpu_zone(cc->zone); in compact_zone()
2592 if (cc->nr_freepages > 0) { in compact_zone()
2593 unsigned long free_pfn = release_freepages(&cc->freepages); in compact_zone()
2595 cc->nr_freepages = 0; in compact_zone()
2603 if (free_pfn > cc->zone->compact_cached_free_pfn) in compact_zone()
2604 cc->zone->compact_cached_free_pfn = free_pfn; in compact_zone()
2607 count_compact_events(COMPACTMIGRATE_SCANNED, cc->total_migrate_scanned); in compact_zone()
2608 count_compact_events(COMPACTFREE_SCANNED, cc->total_free_scanned); in compact_zone()
2610 trace_mm_compaction_end(cc, start_pfn, end_pfn, sync, ret); in compact_zone()
2612 VM_BUG_ON(!list_empty(&cc->freepages)); in compact_zone()
2613 VM_BUG_ON(!list_empty(&cc->migratepages)); in compact_zone()
2624 struct compact_control cc = { in compact_zone_order() local
2639 .cc = &cc, in compact_zone_order()
2651 ret = compact_zone(&cc, &capc); in compact_zone_order()
2759 struct compact_control cc = { in proactive_compact_node() local
2773 cc.zone = zone; in proactive_compact_node()
2775 compact_zone(&cc, NULL); in proactive_compact_node()
2778 cc.total_migrate_scanned); in proactive_compact_node()
2780 cc.total_free_scanned); in proactive_compact_node()
2790 struct compact_control cc = { in compact_node() local
2805 cc.zone = zone; in compact_node()
2807 compact_zone(&cc, NULL); in compact_node()
2940 struct compact_control cc = { in kcompactd_do_work() local
2948 trace_mm_compaction_kcompactd_wake(pgdat->node_id, cc.order, in kcompactd_do_work()
2949 cc.highest_zoneidx); in kcompactd_do_work()
2952 for (zoneid = 0; zoneid <= cc.highest_zoneidx; zoneid++) { in kcompactd_do_work()
2959 if (compaction_deferred(zone, cc.order)) in kcompactd_do_work()
2963 if (zone_watermark_ok(zone, cc.order, in kcompactd_do_work()
2967 if (!compaction_suitable(zone, cc.order, zoneid)) in kcompactd_do_work()
2973 cc.zone = zone; in kcompactd_do_work()
2974 status = compact_zone(&cc, NULL); in kcompactd_do_work()
2977 compaction_defer_reset(zone, cc.order, false); in kcompactd_do_work()
2991 defer_compaction(zone, cc.order); in kcompactd_do_work()
2995 cc.total_migrate_scanned); in kcompactd_do_work()
2997 cc.total_free_scanned); in kcompactd_do_work()
3005 if (pgdat->kcompactd_max_order <= cc.order) in kcompactd_do_work()
3007 if (pgdat->kcompactd_highest_zoneidx >= cc.highest_zoneidx) in kcompactd_do_work()