Lines Matching refs:cc
216 static inline bool isolation_suitable(struct compact_control *cc, in isolation_suitable() argument
219 if (cc->ignore_skip_hint) in isolation_suitable()
396 static bool test_and_set_skip(struct compact_control *cc, struct page *page, in test_and_set_skip() argument
402 if (cc->ignore_skip_hint) in test_and_set_skip()
409 if (!skip && !cc->no_set_skip_hint) in test_and_set_skip()
415 static void update_cached_migrate(struct compact_control *cc, unsigned long pfn) in update_cached_migrate() argument
417 struct zone *zone = cc->zone; in update_cached_migrate()
422 if (cc->no_set_skip_hint) in update_cached_migrate()
427 if (cc->mode != MIGRATE_ASYNC && in update_cached_migrate()
436 static void update_pageblock_skip(struct compact_control *cc, in update_pageblock_skip() argument
439 struct zone *zone = cc->zone; in update_pageblock_skip()
441 if (cc->no_set_skip_hint) in update_pageblock_skip()
454 static inline bool isolation_suitable(struct compact_control *cc, in isolation_suitable() argument
465 static inline void update_pageblock_skip(struct compact_control *cc, in update_pageblock_skip() argument
470 static void update_cached_migrate(struct compact_control *cc, unsigned long pfn) in update_cached_migrate() argument
474 static bool test_and_set_skip(struct compact_control *cc, struct page *page, in test_and_set_skip() argument
491 struct compact_control *cc) in compact_lock_irqsave() argument
495 if (cc->mode == MIGRATE_ASYNC && !cc->contended) { in compact_lock_irqsave()
499 cc->contended = true; in compact_lock_irqsave()
519 unsigned long flags, bool *locked, struct compact_control *cc) in compact_unlock_should_abort() argument
527 cc->contended = true; in compact_unlock_should_abort()
541 static unsigned long isolate_freepages_block(struct compact_control *cc, in isolate_freepages_block() argument
572 && compact_unlock_should_abort(&cc->zone->lock, flags, in isolate_freepages_block()
573 &locked, cc)) in isolate_freepages_block()
599 locked = compact_lock_irqsave(&cc->zone->lock, in isolate_freepages_block()
600 &flags, cc); in isolate_freepages_block()
616 cc->nr_freepages += isolated; in isolate_freepages_block()
619 if (!strict && cc->nr_migratepages <= cc->nr_freepages) { in isolate_freepages_block()
637 spin_unlock_irqrestore(&cc->zone->lock, flags); in isolate_freepages_block()
660 cc->total_free_scanned += nr_scanned; in isolate_freepages_block()
681 isolate_freepages_range(struct compact_control *cc, in isolate_freepages_range() argument
689 if (block_start_pfn < cc->zone->zone_start_pfn) in isolate_freepages_range()
690 block_start_pfn = cc->zone->zone_start_pfn; in isolate_freepages_range()
713 block_end_pfn, cc->zone)) in isolate_freepages_range()
716 isolated = isolate_freepages_block(cc, &isolate_start_pfn, in isolate_freepages_range()
786 isolate_migratepages_block(struct compact_control *cc, unsigned long low_pfn, in isolate_migratepages_block() argument
789 pg_data_t *pgdat = cc->zone->zone_pgdat; in isolate_migratepages_block()
802 cc->migrate_pfn = low_pfn; in isolate_migratepages_block()
811 if (cc->nr_migratepages) in isolate_migratepages_block()
815 if (cc->mode == MIGRATE_ASYNC) in isolate_migratepages_block()
826 if (cc->direct_compaction && (cc->mode == MIGRATE_ASYNC)) { in isolate_migratepages_block()
828 next_skip_pfn = block_end_pfn(low_pfn, cc->order); in isolate_migratepages_block()
853 next_skip_pfn = block_end_pfn(low_pfn, cc->order); in isolate_migratepages_block()
868 cc->contended = true; in isolate_migratepages_block()
888 if (!isolation_suitable(cc, page)) { in isolate_migratepages_block()
896 if (PageHuge(page) && cc->alloc_contig) { in isolate_migratepages_block()
897 ret = isolate_or_dissolve_huge_page(page, &cc->migratepages); in isolate_migratepages_block()
955 if (PageCompound(page) && !cc->alloc_contig) { in isolate_migratepages_block()
1008 if (!(cc->gfp_mask & __GFP_FS) && mapping) in isolate_migratepages_block()
1062 compact_lock_irqsave(&lruvec->lru_lock, &flags, cc); in isolate_migratepages_block()
1070 if (test_and_set_skip(cc, page, low_pfn)) in isolate_migratepages_block()
1079 if (unlikely(PageCompound(page) && !cc->alloc_contig)) { in isolate_migratepages_block()
1097 list_add(&page->lru, &cc->migratepages); in isolate_migratepages_block()
1099 cc->nr_migratepages += compound_nr(page); in isolate_migratepages_block()
1109 if (cc->nr_migratepages >= COMPACT_CLUSTER_MAX && in isolate_migratepages_block()
1110 !cc->rescan && !cc->contended) { in isolate_migratepages_block()
1139 putback_movable_pages(&cc->migratepages); in isolate_migratepages_block()
1140 cc->nr_migratepages = 0; in isolate_migratepages_block()
1150 next_skip_pfn += 1UL << cc->order; in isolate_migratepages_block()
1182 if (low_pfn == end_pfn && (!nr_isolated || cc->rescan)) { in isolate_migratepages_block()
1185 update_cached_migrate(cc, low_pfn); in isolate_migratepages_block()
1192 cc->total_migrate_scanned += nr_scanned; in isolate_migratepages_block()
1196 cc->migrate_pfn = low_pfn; in isolate_migratepages_block()
1211 isolate_migratepages_range(struct compact_control *cc, unsigned long start_pfn, in isolate_migratepages_range() argument
1220 if (block_start_pfn < cc->zone->zone_start_pfn) in isolate_migratepages_range()
1221 block_start_pfn = cc->zone->zone_start_pfn; in isolate_migratepages_range()
1231 block_end_pfn, cc->zone)) in isolate_migratepages_range()
1234 ret = isolate_migratepages_block(cc, pfn, block_end_pfn, in isolate_migratepages_range()
1240 if (cc->nr_migratepages >= COMPACT_CLUSTER_MAX) in isolate_migratepages_range()
1250 static bool suitable_migration_source(struct compact_control *cc, in suitable_migration_source() argument
1258 if ((cc->mode != MIGRATE_ASYNC) || !cc->direct_compaction) in suitable_migration_source()
1263 if (cc->migratetype == MIGRATE_MOVABLE) in suitable_migration_source()
1266 return block_mt == cc->migratetype; in suitable_migration_source()
1270 static bool suitable_migration_target(struct compact_control *cc, in suitable_migration_target() argument
1284 if (cc->ignore_block_suitable) in suitable_migration_target()
1296 freelist_scan_limit(struct compact_control *cc) in freelist_scan_limit() argument
1300 return (COMPACT_CLUSTER_MAX >> min(shift, cc->fast_search_fail)) + 1; in freelist_scan_limit()
1307 static inline bool compact_scanners_met(struct compact_control *cc) in compact_scanners_met() argument
1309 return (cc->free_pfn >> pageblock_order) in compact_scanners_met()
1310 <= (cc->migrate_pfn >> pageblock_order); in compact_scanners_met()
1347 fast_isolate_around(struct compact_control *cc, unsigned long pfn, unsigned long nr_isolated) in fast_isolate_around() argument
1353 if (cc->nr_freepages >= cc->nr_migratepages) in fast_isolate_around()
1357 if (cc->direct_compaction && cc->mode == MIGRATE_ASYNC) in fast_isolate_around()
1361 start_pfn = max(pageblock_start_pfn(pfn), cc->zone->zone_start_pfn); in fast_isolate_around()
1362 end_pfn = min(pageblock_end_pfn(pfn), zone_end_pfn(cc->zone)); in fast_isolate_around()
1364 page = pageblock_pfn_to_page(start_pfn, end_pfn, cc->zone); in fast_isolate_around()
1370 isolate_freepages_block(cc, &start_pfn, pfn, &cc->freepages, 1, false); in fast_isolate_around()
1371 if (cc->nr_freepages >= cc->nr_migratepages) in fast_isolate_around()
1378 isolate_freepages_block(cc, &start_pfn, end_pfn, &cc->freepages, 1, false); in fast_isolate_around()
1381 if (cc->nr_freepages < cc->nr_migratepages) in fast_isolate_around()
1386 static int next_search_order(struct compact_control *cc, int order) in next_search_order() argument
1390 order = cc->order - 1; in next_search_order()
1393 if (order == cc->search_order) { in next_search_order()
1394 cc->search_order--; in next_search_order()
1395 if (cc->search_order < 0) in next_search_order()
1396 cc->search_order = cc->order - 1; in next_search_order()
1404 fast_isolate_freepages(struct compact_control *cc) in fast_isolate_freepages() argument
1406 unsigned int limit = max(1U, freelist_scan_limit(cc) >> 1); in fast_isolate_freepages()
1416 if (cc->order <= 0) in fast_isolate_freepages()
1417 return cc->free_pfn; in fast_isolate_freepages()
1423 if (cc->free_pfn >= cc->zone->compact_init_free_pfn) { in fast_isolate_freepages()
1432 distance = (cc->free_pfn - cc->migrate_pfn); in fast_isolate_freepages()
1433 low_pfn = pageblock_start_pfn(cc->free_pfn - (distance >> 2)); in fast_isolate_freepages()
1434 min_pfn = pageblock_start_pfn(cc->free_pfn - (distance >> 1)); in fast_isolate_freepages()
1443 cc->search_order = min_t(unsigned int, cc->order - 1, cc->search_order); in fast_isolate_freepages()
1445 for (order = cc->search_order; in fast_isolate_freepages()
1447 order = next_search_order(cc, order)) { in fast_isolate_freepages()
1448 struct free_area *area = &cc->zone->free_area[order]; in fast_isolate_freepages()
1458 spin_lock_irqsave(&cc->zone->lock, flags); in fast_isolate_freepages()
1469 cc->zone->zone_start_pfn); in fast_isolate_freepages()
1472 cc->fast_search_fail = 0; in fast_isolate_freepages()
1473 cc->search_order = order; in fast_isolate_freepages()
1506 cc->nr_freepages += nr_isolated; in fast_isolate_freepages()
1507 list_add_tail(&page->lru, &cc->freepages); in fast_isolate_freepages()
1511 order = cc->search_order + 1; in fast_isolate_freepages()
1516 spin_unlock_irqrestore(&cc->zone->lock, flags); in fast_isolate_freepages()
1527 cc->fast_search_fail++; in fast_isolate_freepages()
1536 cc->free_pfn = highest; in fast_isolate_freepages()
1538 if (cc->direct_compaction && pfn_valid(min_pfn)) { in fast_isolate_freepages()
1541 zone_end_pfn(cc->zone)), in fast_isolate_freepages()
1542 cc->zone); in fast_isolate_freepages()
1543 cc->free_pfn = min_pfn; in fast_isolate_freepages()
1549 if (highest && highest >= cc->zone->compact_cached_free_pfn) { in fast_isolate_freepages()
1551 cc->zone->compact_cached_free_pfn = highest; in fast_isolate_freepages()
1554 cc->total_free_scanned += nr_scanned; in fast_isolate_freepages()
1556 return cc->free_pfn; in fast_isolate_freepages()
1559 fast_isolate_around(cc, low_pfn, nr_isolated); in fast_isolate_freepages()
1567 static void isolate_freepages(struct compact_control *cc) in isolate_freepages() argument
1569 struct zone *zone = cc->zone; in isolate_freepages()
1575 struct list_head *freelist = &cc->freepages; in isolate_freepages()
1579 fast_isolate_freepages(cc); in isolate_freepages()
1580 if (cc->nr_freepages) in isolate_freepages()
1594 isolate_start_pfn = cc->free_pfn; in isolate_freepages()
1598 low_pfn = pageblock_end_pfn(cc->migrate_pfn); in isolate_freepages()
1599 stride = cc->mode == MIGRATE_ASYNC ? COMPACT_CLUSTER_MAX : 1; in isolate_freepages()
1625 if (!suitable_migration_target(cc, page)) in isolate_freepages()
1629 if (!isolation_suitable(cc, page)) in isolate_freepages()
1633 nr_isolated = isolate_freepages_block(cc, &isolate_start_pfn, in isolate_freepages()
1638 update_pageblock_skip(cc, page, block_start_pfn); in isolate_freepages()
1641 if (cc->nr_freepages >= cc->nr_migratepages) { in isolate_freepages()
1673 cc->free_pfn = isolate_start_pfn; in isolate_freepages()
1687 struct compact_control *cc = (struct compact_control *)data; in compaction_alloc() local
1690 if (list_empty(&cc->freepages)) { in compaction_alloc()
1691 isolate_freepages(cc); in compaction_alloc()
1693 if (list_empty(&cc->freepages)) in compaction_alloc()
1697 freepage = list_entry(cc->freepages.next, struct page, lru); in compaction_alloc()
1699 cc->nr_freepages--; in compaction_alloc()
1711 struct compact_control *cc = (struct compact_control *)data; in compaction_free() local
1713 list_add(&page->lru, &cc->freepages); in compaction_free()
1714 cc->nr_freepages++; in compaction_free()
1731 update_fast_start_pfn(struct compact_control *cc, unsigned long pfn) in update_fast_start_pfn() argument
1733 if (cc->fast_start_pfn == ULONG_MAX) in update_fast_start_pfn()
1736 if (!cc->fast_start_pfn) in update_fast_start_pfn()
1737 cc->fast_start_pfn = pfn; in update_fast_start_pfn()
1739 cc->fast_start_pfn = min(cc->fast_start_pfn, pfn); in update_fast_start_pfn()
1743 reinit_migrate_pfn(struct compact_control *cc) in reinit_migrate_pfn() argument
1745 if (!cc->fast_start_pfn || cc->fast_start_pfn == ULONG_MAX) in reinit_migrate_pfn()
1746 return cc->migrate_pfn; in reinit_migrate_pfn()
1748 cc->migrate_pfn = cc->fast_start_pfn; in reinit_migrate_pfn()
1749 cc->fast_start_pfn = ULONG_MAX; in reinit_migrate_pfn()
1751 return cc->migrate_pfn; in reinit_migrate_pfn()
1759 static unsigned long fast_find_migrateblock(struct compact_control *cc) in fast_find_migrateblock() argument
1761 unsigned int limit = freelist_scan_limit(cc); in fast_find_migrateblock()
1764 unsigned long pfn = cc->migrate_pfn; in fast_find_migrateblock()
1770 if (cc->ignore_skip_hint) in fast_find_migrateblock()
1778 if (pfn != cc->zone->zone_start_pfn && pfn != pageblock_start_pfn(pfn)) in fast_find_migrateblock()
1786 if (cc->order <= PAGE_ALLOC_COSTLY_ORDER) in fast_find_migrateblock()
1795 if (cc->direct_compaction && cc->migratetype != MIGRATE_MOVABLE) in fast_find_migrateblock()
1804 distance = (cc->free_pfn - cc->migrate_pfn) >> 1; in fast_find_migrateblock()
1805 if (cc->migrate_pfn != cc->zone->zone_start_pfn) in fast_find_migrateblock()
1807 high_pfn = pageblock_start_pfn(cc->migrate_pfn + distance); in fast_find_migrateblock()
1809 for (order = cc->order - 1; in fast_find_migrateblock()
1812 struct free_area *area = &cc->zone->free_area[order]; in fast_find_migrateblock()
1820 spin_lock_irqsave(&cc->zone->lock, flags); in fast_find_migrateblock()
1844 update_fast_start_pfn(cc, free_pfn); in fast_find_migrateblock()
1846 if (pfn < cc->zone->zone_start_pfn) in fast_find_migrateblock()
1847 pfn = cc->zone->zone_start_pfn; in fast_find_migrateblock()
1848 cc->fast_search_fail = 0; in fast_find_migrateblock()
1853 spin_unlock_irqrestore(&cc->zone->lock, flags); in fast_find_migrateblock()
1856 cc->total_migrate_scanned += nr_scanned; in fast_find_migrateblock()
1863 cc->fast_search_fail++; in fast_find_migrateblock()
1864 pfn = reinit_migrate_pfn(cc); in fast_find_migrateblock()
1874 static isolate_migrate_t isolate_migratepages(struct compact_control *cc) in isolate_migratepages() argument
1882 (cc->mode != MIGRATE_SYNC ? ISOLATE_ASYNC_MIGRATE : 0); in isolate_migratepages()
1890 low_pfn = fast_find_migrateblock(cc); in isolate_migratepages()
1892 if (block_start_pfn < cc->zone->zone_start_pfn) in isolate_migratepages()
1893 block_start_pfn = cc->zone->zone_start_pfn; in isolate_migratepages()
1900 fast_find_block = low_pfn != cc->migrate_pfn && !cc->fast_search_fail; in isolate_migratepages()
1909 for (; block_end_pfn <= cc->free_pfn; in isolate_migratepages()
1911 cc->migrate_pfn = low_pfn = block_end_pfn, in isolate_migratepages()
1924 block_end_pfn, cc->zone); in isolate_migratepages()
1936 !fast_find_block && !isolation_suitable(cc, page)) in isolate_migratepages()
1947 if (!suitable_migration_source(cc, page)) { in isolate_migratepages()
1948 update_cached_migrate(cc, block_end_pfn); in isolate_migratepages()
1953 if (isolate_migratepages_block(cc, low_pfn, block_end_pfn, in isolate_migratepages()
1965 return cc->nr_migratepages ? ISOLATE_SUCCESS : ISOLATE_NONE; in isolate_migratepages()
2067 static enum compact_result __compact_finished(struct compact_control *cc) in __compact_finished() argument
2070 const int migratetype = cc->migratetype; in __compact_finished()
2074 if (compact_scanners_met(cc)) { in __compact_finished()
2076 reset_cached_positions(cc->zone); in __compact_finished()
2084 if (cc->direct_compaction) in __compact_finished()
2085 cc->zone->compact_blockskip_flush = true; in __compact_finished()
2087 if (cc->whole_zone) in __compact_finished()
2093 if (cc->proactive_compaction) { in __compact_finished()
2097 pgdat = cc->zone->zone_pgdat; in __compact_finished()
2101 score = fragmentation_score_zone(cc->zone); in __compact_finished()
2112 if (is_via_compact_memory(cc->order)) in __compact_finished()
2121 if (!pageblock_aligned(cc->migrate_pfn)) in __compact_finished()
2126 for (order = cc->order; order < MAX_ORDER; order++) { in __compact_finished()
2127 struct free_area *area = &cc->zone->free_area[order]; in __compact_finished()
2158 if (cc->contended || fatal_signal_pending(current)) in __compact_finished()
2164 static enum compact_result compact_finished(struct compact_control *cc) in compact_finished() argument
2168 ret = __compact_finished(cc); in compact_finished()
2169 trace_mm_compaction_finished(cc->zone, cc->order, ret); in compact_finished()
2297 compact_zone(struct compact_control *cc, struct capture_control *capc) in compact_zone() argument
2300 unsigned long start_pfn = cc->zone->zone_start_pfn; in compact_zone()
2301 unsigned long end_pfn = zone_end_pfn(cc->zone); in compact_zone()
2303 const bool sync = cc->mode != MIGRATE_ASYNC; in compact_zone()
2311 cc->total_migrate_scanned = 0; in compact_zone()
2312 cc->total_free_scanned = 0; in compact_zone()
2313 cc->nr_migratepages = 0; in compact_zone()
2314 cc->nr_freepages = 0; in compact_zone()
2315 INIT_LIST_HEAD(&cc->freepages); in compact_zone()
2316 INIT_LIST_HEAD(&cc->migratepages); in compact_zone()
2318 cc->migratetype = gfp_migratetype(cc->gfp_mask); in compact_zone()
2319 ret = compaction_suitable(cc->zone, cc->order, cc->alloc_flags, in compact_zone()
2320 cc->highest_zoneidx); in compact_zone()
2332 if (compaction_restarting(cc->zone, cc->order)) in compact_zone()
2333 __reset_isolation_suitable(cc->zone); in compact_zone()
2341 cc->fast_start_pfn = 0; in compact_zone()
2342 if (cc->whole_zone) { in compact_zone()
2343 cc->migrate_pfn = start_pfn; in compact_zone()
2344 cc->free_pfn = pageblock_start_pfn(end_pfn - 1); in compact_zone()
2346 cc->migrate_pfn = cc->zone->compact_cached_migrate_pfn[sync]; in compact_zone()
2347 cc->free_pfn = cc->zone->compact_cached_free_pfn; in compact_zone()
2348 if (cc->free_pfn < start_pfn || cc->free_pfn >= end_pfn) { in compact_zone()
2349 cc->free_pfn = pageblock_start_pfn(end_pfn - 1); in compact_zone()
2350 cc->zone->compact_cached_free_pfn = cc->free_pfn; in compact_zone()
2352 if (cc->migrate_pfn < start_pfn || cc->migrate_pfn >= end_pfn) { in compact_zone()
2353 cc->migrate_pfn = start_pfn; in compact_zone()
2354 cc->zone->compact_cached_migrate_pfn[0] = cc->migrate_pfn; in compact_zone()
2355 cc->zone->compact_cached_migrate_pfn[1] = cc->migrate_pfn; in compact_zone()
2358 if (cc->migrate_pfn <= cc->zone->compact_init_migrate_pfn) in compact_zone()
2359 cc->whole_zone = true; in compact_zone()
2373 cc->zone->compact_cached_migrate_pfn[0] == cc->zone->compact_cached_migrate_pfn[1]; in compact_zone()
2375 trace_mm_compaction_begin(cc, start_pfn, end_pfn, sync); in compact_zone()
2380 while ((ret = compact_finished(cc)) == COMPACT_CONTINUE) { in compact_zone()
2382 unsigned long iteration_start_pfn = cc->migrate_pfn; in compact_zone()
2392 cc->rescan = false; in compact_zone()
2395 cc->rescan = true; in compact_zone()
2398 switch (isolate_migratepages(cc)) { in compact_zone()
2401 putback_movable_pages(&cc->migratepages); in compact_zone()
2402 cc->nr_migratepages = 0; in compact_zone()
2406 cc->zone->compact_cached_migrate_pfn[1] = in compact_zone()
2407 cc->zone->compact_cached_migrate_pfn[0]; in compact_zone()
2421 err = migrate_pages(&cc->migratepages, compaction_alloc, in compact_zone()
2422 compaction_free, (unsigned long)cc, cc->mode, in compact_zone()
2425 trace_mm_compaction_migratepages(cc, nr_succeeded); in compact_zone()
2428 cc->nr_migratepages = 0; in compact_zone()
2430 putback_movable_pages(&cc->migratepages); in compact_zone()
2435 if (err == -ENOMEM && !compact_scanners_met(cc)) { in compact_zone()
2443 if (cc->direct_compaction && in compact_zone()
2444 (cc->mode == MIGRATE_ASYNC)) { in compact_zone()
2445 cc->migrate_pfn = block_end_pfn( in compact_zone()
2446 cc->migrate_pfn - 1, cc->order); in compact_zone()
2460 if (cc->order > 0 && last_migrated_pfn) { in compact_zone()
2462 block_start_pfn(cc->migrate_pfn, cc->order); in compact_zone()
2465 lru_add_drain_cpu_zone(cc->zone); in compact_zone()
2483 if (cc->nr_freepages > 0) { in compact_zone()
2484 unsigned long free_pfn = release_freepages(&cc->freepages); in compact_zone()
2486 cc->nr_freepages = 0; in compact_zone()
2494 if (free_pfn > cc->zone->compact_cached_free_pfn) in compact_zone()
2495 cc->zone->compact_cached_free_pfn = free_pfn; in compact_zone()
2498 count_compact_events(COMPACTMIGRATE_SCANNED, cc->total_migrate_scanned); in compact_zone()
2499 count_compact_events(COMPACTFREE_SCANNED, cc->total_free_scanned); in compact_zone()
2501 trace_mm_compaction_end(cc, start_pfn, end_pfn, sync, ret); in compact_zone()
2512 struct compact_control cc = { in compact_zone_order() local
2527 .cc = &cc, in compact_zone_order()
2539 ret = compact_zone(&cc, &capc); in compact_zone_order()
2541 VM_BUG_ON(!list_empty(&cc.freepages)); in compact_zone_order()
2542 VM_BUG_ON(!list_empty(&cc.migratepages)); in compact_zone_order()
2657 struct compact_control cc = { in proactive_compact_node() local
2671 cc.zone = zone; in proactive_compact_node()
2673 compact_zone(&cc, NULL); in proactive_compact_node()
2675 VM_BUG_ON(!list_empty(&cc.freepages)); in proactive_compact_node()
2676 VM_BUG_ON(!list_empty(&cc.migratepages)); in proactive_compact_node()
2686 struct compact_control cc = { in compact_node() local
2701 cc.zone = zone; in compact_node()
2703 compact_zone(&cc, NULL); in compact_node()
2705 VM_BUG_ON(!list_empty(&cc.freepages)); in compact_node()
2706 VM_BUG_ON(!list_empty(&cc.migratepages)); in compact_node()
2829 struct compact_control cc = { in kcompactd_do_work() local
2837 trace_mm_compaction_kcompactd_wake(pgdat->node_id, cc.order, in kcompactd_do_work()
2838 cc.highest_zoneidx); in kcompactd_do_work()
2841 for (zoneid = 0; zoneid <= cc.highest_zoneidx; zoneid++) { in kcompactd_do_work()
2848 if (compaction_deferred(zone, cc.order)) in kcompactd_do_work()
2851 if (compaction_suitable(zone, cc.order, 0, zoneid) != in kcompactd_do_work()
2858 cc.zone = zone; in kcompactd_do_work()
2859 status = compact_zone(&cc, NULL); in kcompactd_do_work()
2862 compaction_defer_reset(zone, cc.order, false); in kcompactd_do_work()
2876 defer_compaction(zone, cc.order); in kcompactd_do_work()
2880 cc.total_migrate_scanned); in kcompactd_do_work()
2882 cc.total_free_scanned); in kcompactd_do_work()
2884 VM_BUG_ON(!list_empty(&cc.freepages)); in kcompactd_do_work()
2885 VM_BUG_ON(!list_empty(&cc.migratepages)); in kcompactd_do_work()
2893 if (pgdat->kcompactd_max_order <= cc.order) in kcompactd_do_work()
2895 if (pgdat->kcompactd_highest_zoneidx >= cc.highest_zoneidx) in kcompactd_do_work()