Lines Matching full:zone
13 * Zone balancing, Kanoj Sarcar, SGI, Jan 2000
82 * shuffle the whole zone).
94 /* prevent >1 _updater_ of zone percpu pageset ->high and ->batch fields */
281 /* movable_zone is the "real" zone pages in ZONE_MOVABLE are taken from */
293 static bool cond_accept_memory(struct zone *zone, unsigned int order,
319 _deferred_grow_zone(struct zone *zone, unsigned int order) in _deferred_grow_zone() argument
321 return deferred_grow_zone(zone, order); in _deferred_grow_zone()
329 static inline bool _deferred_grow_zone(struct zone *zone, unsigned int order) in _deferred_grow_zone() argument
434 static int page_outside_zone_boundaries(struct zone *zone, struct page *page) in page_outside_zone_boundaries() argument
442 seq = zone_span_seqbegin(zone); in page_outside_zone_boundaries()
443 start_pfn = zone->zone_start_pfn; in page_outside_zone_boundaries()
444 sp = zone->spanned_pages; in page_outside_zone_boundaries()
445 ret = !zone_spans_pfn(zone, pfn); in page_outside_zone_boundaries()
446 } while (zone_span_seqretry(zone, seq)); in page_outside_zone_boundaries()
449 pr_err("page 0x%lx outside node %d zone %s [ 0x%lx - 0x%lx ]\n", in page_outside_zone_boundaries()
450 pfn, zone_to_nid(zone), zone->name, in page_outside_zone_boundaries()
457 * Temporary debugging check for pages not lying within a given zone.
459 static bool __maybe_unused bad_range(struct zone *zone, struct page *page) in bad_range() argument
461 if (page_outside_zone_boundaries(zone, page)) in bad_range()
463 if (zone != page_zone(page)) in bad_range()
469 static inline bool __maybe_unused bad_range(struct zone *zone, struct page *page) in bad_range() argument
589 static inline struct capture_control *task_capc(struct zone *zone) in task_capc() argument
596 capc->cc->zone == zone ? capc : NULL; in task_capc()
631 static inline struct capture_control *task_capc(struct zone *zone) in task_capc() argument
644 static inline void account_freepages(struct zone *zone, int nr_pages, in account_freepages() argument
647 lockdep_assert_held(&zone->lock); in account_freepages()
652 __mod_zone_page_state(zone, NR_FREE_PAGES, nr_pages); in account_freepages()
655 __mod_zone_page_state(zone, NR_FREE_CMA_PAGES, nr_pages); in account_freepages()
657 WRITE_ONCE(zone->nr_free_highatomic, in account_freepages()
658 zone->nr_free_highatomic + nr_pages); in account_freepages()
662 static inline void __add_to_free_list(struct page *page, struct zone *zone, in __add_to_free_list() argument
666 struct free_area *area = &zone->free_area[order]; in __add_to_free_list()
680 __mod_zone_page_state(zone, NR_FREE_PAGES_BLOCKS, nr_pages); in __add_to_free_list()
688 static inline void move_to_free_list(struct page *page, struct zone *zone, in move_to_free_list() argument
691 struct free_area *area = &zone->free_area[order]; in move_to_free_list()
701 account_freepages(zone, -nr_pages, old_mt); in move_to_free_list()
702 account_freepages(zone, nr_pages, new_mt); in move_to_free_list()
708 __mod_zone_page_state(zone, NR_FREE_PAGES_BLOCKS, nr_pages); in move_to_free_list()
712 static inline void __del_page_from_free_list(struct page *page, struct zone *zone, in __del_page_from_free_list() argument
728 zone->free_area[order].nr_free--; in __del_page_from_free_list()
731 __mod_zone_page_state(zone, NR_FREE_PAGES_BLOCKS, -nr_pages); in __del_page_from_free_list()
734 static inline void del_page_from_free_list(struct page *page, struct zone *zone, in del_page_from_free_list() argument
737 __del_page_from_free_list(page, zone, order, migratetype); in del_page_from_free_list()
738 account_freepages(zone, -(1 << order), migratetype); in del_page_from_free_list()
799 struct zone *zone, unsigned int order, in __free_one_page() argument
802 struct capture_control *capc = task_capc(zone); in __free_one_page()
808 VM_BUG_ON(!zone_is_initialized(zone)); in __free_one_page()
813 VM_BUG_ON_PAGE(bad_range(zone, page), page); in __free_one_page()
815 account_freepages(zone, 1 << order, migratetype); in __free_one_page()
821 account_freepages(zone, -(1 << order), migratetype); in __free_one_page()
849 clear_page_guard(zone, buddy, order); in __free_one_page()
851 __del_page_from_free_list(buddy, zone, order, buddy_mt); in __free_one_page()
878 __add_to_free_list(page, zone, order, migratetype, to_tail); in __free_one_page()
1303 * Assumes all pages on list are in same zone.
1306 static void free_pcppages_bulk(struct zone *zone, int count, in free_pcppages_bulk() argument
1323 spin_lock_irqsave(&zone->lock, flags); in free_pcppages_bulk()
1351 __free_one_page(page, pfn, zone, order, mt, FPI_NONE); in free_pcppages_bulk()
1356 spin_unlock_irqrestore(&zone->lock, flags); in free_pcppages_bulk()
1360 static void split_large_buddy(struct zone *zone, struct page *page, in split_large_buddy() argument
1375 __free_one_page(page, pfn, zone, order, mt, fpi); in split_large_buddy()
1383 static void add_page_to_zone_llist(struct zone *zone, struct page *page, in add_page_to_zone_llist() argument
1389 llist_add(&page->pcp_llist, &zone->trylock_free_pages); in add_page_to_zone_llist()
1392 static void free_one_page(struct zone *zone, struct page *page, in free_one_page() argument
1400 if (!spin_trylock_irqsave(&zone->lock, flags)) { in free_one_page()
1401 add_page_to_zone_llist(zone, page, order); in free_one_page()
1405 spin_lock_irqsave(&zone->lock, flags); in free_one_page()
1409 llhead = &zone->trylock_free_pages; in free_one_page()
1418 split_large_buddy(zone, p, page_to_pfn(p), p_order, fpi_flags); in free_one_page()
1422 split_large_buddy(zone, page, pfn, order, fpi_flags); in free_one_page()
1423 spin_unlock_irqrestore(&zone->lock, flags); in free_one_page()
1432 struct zone *zone = page_zone(page); in __free_pages_ok() local
1435 free_one_page(zone, page, pfn, order, fpi_flags); in __free_pages_ok()
1488 * [start_pfn, end_pfn) is valid and within the same zone, before scanning it
1495 * belong to a single zone. We assume that a border between node0 and node1
1511 unsigned long end_pfn, struct zone *zone) in __pageblock_pfn_to_page() argument
1526 if (page_zone(start_page) != zone) in __pageblock_pfn_to_page()
1552 static inline unsigned int expand(struct zone *zone, struct page *page, int low, in expand() argument
1561 VM_BUG_ON_PAGE(bad_range(zone, &page[size]), &page[size]); in expand()
1569 if (set_page_guard(zone, &page[size], high)) in expand()
1572 __add_to_free_list(&page[size], zone, high, migratetype, false); in expand()
1580 static __always_inline void page_del_and_expand(struct zone *zone, in page_del_and_expand() argument
1586 __del_page_from_free_list(page, zone, high, migratetype); in page_del_and_expand()
1587 nr_pages -= expand(zone, page, low, high, migratetype); in page_del_and_expand()
1588 account_freepages(zone, -nr_pages, migratetype); in page_del_and_expand()
1744 struct page *__rmqueue_smallest(struct zone *zone, unsigned int order, in __rmqueue_smallest() argument
1753 area = &(zone->free_area[current_order]); in __rmqueue_smallest()
1758 page_del_and_expand(zone, page, order, current_order, in __rmqueue_smallest()
1783 static __always_inline struct page *__rmqueue_cma_fallback(struct zone *zone, in __rmqueue_cma_fallback() argument
1786 return __rmqueue_smallest(zone, order, MIGRATE_CMA); in __rmqueue_cma_fallback()
1789 static inline struct page *__rmqueue_cma_fallback(struct zone *zone, in __rmqueue_cma_fallback() argument
1797 static int __move_freepages_block(struct zone *zone, unsigned long start_pfn, in __move_freepages_block() argument
1816 VM_BUG_ON_PAGE(page_to_nid(page) != zone_to_nid(zone), page); in __move_freepages_block()
1817 VM_BUG_ON_PAGE(page_zone(page) != zone, page); in __move_freepages_block()
1821 move_to_free_list(page, zone, order, old_mt, new_mt); in __move_freepages_block()
1832 static bool prep_move_freepages_block(struct zone *zone, struct page *page, in prep_move_freepages_block() argument
1843 * The caller only has the lock for @zone, don't touch ranges in prep_move_freepages_block()
1845 * the range that's inside the zone, this call is usually in prep_move_freepages_block()
1849 if (!zone_spans_pfn(zone, start)) in prep_move_freepages_block()
1851 if (!zone_spans_pfn(zone, end - 1)) in prep_move_freepages_block()
1882 static int move_freepages_block(struct zone *zone, struct page *page, in move_freepages_block() argument
1887 if (!prep_move_freepages_block(zone, page, &start_pfn, NULL, NULL)) in move_freepages_block()
1890 return __move_freepages_block(zone, start_pfn, old_mt, new_mt); in move_freepages_block()
1920 * @zone: the zone
1937 bool move_freepages_block_isolate(struct zone *zone, struct page *page, in move_freepages_block_isolate() argument
1942 if (!prep_move_freepages_block(zone, page, &start_pfn, NULL, NULL)) in move_freepages_block_isolate()
1955 del_page_from_free_list(buddy, zone, order, in move_freepages_block_isolate()
1958 split_large_buddy(zone, buddy, pfn, order, FPI_NONE); in move_freepages_block_isolate()
1966 del_page_from_free_list(page, zone, order, in move_freepages_block_isolate()
1969 split_large_buddy(zone, page, pfn, order, FPI_NONE); in move_freepages_block_isolate()
1973 __move_freepages_block(zone, start_pfn, in move_freepages_block_isolate()
1991 static inline bool boost_watermark(struct zone *zone) in boost_watermark() argument
2003 if ((pageblock_nr_pages * 4) > zone_managed_pages(zone)) in boost_watermark()
2006 max_boost = mult_frac(zone->_watermark[WMARK_HIGH], in boost_watermark()
2022 zone->watermark_boost = min(zone->watermark_boost + pageblock_nr_pages, in boost_watermark()
2116 try_to_claim_block(struct zone *zone, struct page *page, in try_to_claim_block() argument
2127 del_page_from_free_list(page, zone, current_order, block_type); in try_to_claim_block()
2129 nr_added = expand(zone, page, order, current_order, start_type); in try_to_claim_block()
2130 account_freepages(zone, nr_added, start_type); in try_to_claim_block()
2139 if (boost_watermark(zone) && (alloc_flags & ALLOC_KSWAPD)) in try_to_claim_block()
2140 set_bit(ZONE_BOOSTED_WATERMARK, &zone->flags); in try_to_claim_block()
2142 /* moving whole block can fail due to zone boundary conditions */ in try_to_claim_block()
2143 if (!prep_move_freepages_block(zone, page, &start_pfn, &free_pages, in try_to_claim_block()
2174 __move_freepages_block(zone, start_pfn, block_type, start_type); in try_to_claim_block()
2175 return __rmqueue_smallest(zone, order, start_type); in try_to_claim_block()
2190 __rmqueue_claim(struct zone *zone, int order, int start_migratetype, in __rmqueue_claim() argument
2215 area = &(zone->free_area[current_order]); in __rmqueue_claim()
2225 page = try_to_claim_block(zone, page, current_order, order, in __rmqueue_claim()
2243 __rmqueue_steal(struct zone *zone, int order, int start_migratetype) in __rmqueue_steal() argument
2252 area = &(zone->free_area[current_order]); in __rmqueue_steal()
2259 page_del_and_expand(zone, page, order, current_order, fallback_mt); in __rmqueue_steal()
2277 * Call me with the zone->lock already held.
2280 __rmqueue(struct zone *zone, unsigned int order, int migratetype, in __rmqueue() argument
2288 * allocating from CMA when over half of the zone's free memory in __rmqueue()
2292 zone_page_state(zone, NR_FREE_CMA_PAGES) > in __rmqueue()
2293 zone_page_state(zone, NR_FREE_PAGES) / 2) { in __rmqueue()
2294 page = __rmqueue_cma_fallback(zone, order); in __rmqueue()
2305 * a loop with the zone->lock held, meaning the freelists are in __rmqueue()
2311 page = __rmqueue_smallest(zone, order, migratetype); in __rmqueue()
2317 page = __rmqueue_cma_fallback(zone, order); in __rmqueue()
2325 page = __rmqueue_claim(zone, order, migratetype, alloc_flags); in __rmqueue()
2334 page = __rmqueue_steal(zone, order, migratetype); in __rmqueue()
2349 static int rmqueue_bulk(struct zone *zone, unsigned int order, in rmqueue_bulk() argument
2358 if (!spin_trylock_irqsave(&zone->lock, flags)) in rmqueue_bulk()
2361 spin_lock_irqsave(&zone->lock, flags); in rmqueue_bulk()
2364 struct page *page = __rmqueue(zone, order, migratetype, in rmqueue_bulk()
2381 spin_unlock_irqrestore(&zone->lock, flags); in rmqueue_bulk()
2390 int decay_pcp_high(struct zone *zone, struct per_cpu_pages *pcp) in decay_pcp_high() argument
2412 free_pcppages_bulk(zone, to_drain, pcp, 0); in decay_pcp_high()
2426 void drain_zone_pages(struct zone *zone, struct per_cpu_pages *pcp) in drain_zone_pages() argument
2434 free_pcppages_bulk(zone, to_drain, pcp, 0); in drain_zone_pages()
2441 * Drain pcplists of the indicated processor and zone.
2443 static void drain_pages_zone(unsigned int cpu, struct zone *zone) in drain_pages_zone() argument
2445 struct per_cpu_pages *pcp = per_cpu_ptr(zone->per_cpu_pageset, cpu); in drain_pages_zone()
2455 free_pcppages_bulk(zone, to_drain, pcp, 0); in drain_pages_zone()
2467 struct zone *zone; in drain_pages() local
2469 for_each_populated_zone(zone) { in drain_pages()
2470 drain_pages_zone(cpu, zone); in drain_pages()
2477 void drain_local_pages(struct zone *zone) in drain_local_pages() argument
2481 if (zone) in drain_local_pages()
2482 drain_pages_zone(cpu, zone); in drain_local_pages()
2497 static void __drain_all_pages(struct zone *zone, bool force_all_cpus) in __drain_all_pages() argument
2509 * a zone. Such callers are primarily CMA and memory hotplug and need in __drain_all_pages()
2513 if (!zone) in __drain_all_pages()
2526 struct zone *z; in __drain_all_pages()
2535 } else if (zone) { in __drain_all_pages()
2536 pcp = per_cpu_ptr(zone->per_cpu_pageset, cpu); in __drain_all_pages()
2556 if (zone) in __drain_all_pages()
2557 drain_pages_zone(cpu, zone); in __drain_all_pages()
2568 * When zone parameter is non-NULL, spill just the single zone's pages.
2570 void drain_all_pages(struct zone *zone) in drain_all_pages() argument
2572 __drain_all_pages(zone, false); in drain_all_pages()
2593 * freed pages to reduce zone lock contention. in nr_pcp_free()
2600 static int nr_pcp_high(struct per_cpu_pages *pcp, struct zone *zone, in nr_pcp_high() argument
2622 if (test_bit(ZONE_RECLAIM_ACTIVE, &zone->flags)) { in nr_pcp_high()
2632 if (test_bit(ZONE_BELOW_HIGH, &zone->flags)) { in nr_pcp_high()
2648 static void free_frozen_page_commit(struct zone *zone, in free_frozen_page_commit() argument
2688 * Do not attempt to take a zone lock. Let pcp->count get in free_frozen_page_commit()
2693 high = nr_pcp_high(pcp, zone, batch, free_high); in free_frozen_page_commit()
2695 free_pcppages_bulk(zone, nr_pcp_free(pcp, batch, high, free_high), in free_frozen_page_commit()
2697 if (test_bit(ZONE_BELOW_HIGH, &zone->flags) && in free_frozen_page_commit()
2698 zone_watermark_ok(zone, 0, high_wmark_pages(zone), in free_frozen_page_commit()
2700 clear_bit(ZONE_BELOW_HIGH, &zone->flags); in free_frozen_page_commit()
2712 struct zone *zone; in __free_frozen_pages() local
2731 zone = page_zone(page); in __free_frozen_pages()
2735 free_one_page(zone, page, pfn, order, fpi_flags); in __free_frozen_pages()
2743 add_page_to_zone_llist(zone, page, order); in __free_frozen_pages()
2747 pcp = pcp_spin_trylock(zone->per_cpu_pageset); in __free_frozen_pages()
2749 free_frozen_page_commit(zone, pcp, page, migratetype, order, fpi_flags); in __free_frozen_pages()
2752 free_one_page(zone, page, pfn, order, fpi_flags); in __free_frozen_pages()
2769 struct zone *locked_zone = NULL; in free_unref_folios()
2798 struct zone *zone = folio_zone(folio); in free_unref_folios() local
2806 /* Different zone requires a different pcp lock */ in free_unref_folios()
2807 if (zone != locked_zone || in free_unref_folios()
2821 free_one_page(zone, &folio->page, pfn, in free_unref_folios()
2831 pcp = pcp_spin_trylock(zone->per_cpu_pageset); in free_unref_folios()
2834 free_one_page(zone, &folio->page, pfn, in free_unref_folios()
2838 locked_zone = zone; in free_unref_folios()
2849 free_frozen_page_commit(zone, pcp, &folio->page, migratetype, in free_unref_folios()
2885 struct zone *zone = page_zone(page); in __isolate_free_page() local
2896 watermark = zone->_watermark[WMARK_MIN] + (1UL << order); in __isolate_free_page()
2897 if (!zone_watermark_ok(zone, 0, watermark, 0, ALLOC_CMA)) in __isolate_free_page()
2901 del_page_from_free_list(page, zone, order, mt); in __isolate_free_page()
2916 move_freepages_block(zone, page, mt, in __isolate_free_page()
2935 struct zone *zone = page_zone(page); in __putback_isolated_page() local
2937 /* zone lock should be held when this function is called */ in __putback_isolated_page()
2938 lockdep_assert_held(&zone->lock); in __putback_isolated_page()
2941 __free_one_page(page, page_to_pfn(page), zone, order, mt, in __putback_isolated_page()
2948 static inline void zone_statistics(struct zone *preferred_zone, struct zone *z, in zone_statistics()
2972 struct page *rmqueue_buddy(struct zone *preferred_zone, struct zone *zone, in rmqueue_buddy() argument
2982 if (!spin_trylock_irqsave(&zone->lock, flags)) in rmqueue_buddy()
2985 spin_lock_irqsave(&zone->lock, flags); in rmqueue_buddy()
2988 page = __rmqueue_smallest(zone, order, MIGRATE_HIGHATOMIC); in rmqueue_buddy()
2992 page = __rmqueue(zone, order, migratetype, alloc_flags, &rmqm); in rmqueue_buddy()
3001 page = __rmqueue_smallest(zone, order, MIGRATE_HIGHATOMIC); in rmqueue_buddy()
3004 spin_unlock_irqrestore(&zone->lock, flags); in rmqueue_buddy()
3008 spin_unlock_irqrestore(&zone->lock, flags); in rmqueue_buddy()
3012 zone_statistics(preferred_zone, zone, 1); in rmqueue_buddy()
3017 static int nr_pcp_alloc(struct per_cpu_pages *pcp, struct zone *zone, int order) in nr_pcp_alloc() argument
3038 * zone. in nr_pcp_alloc()
3040 if (high_min != high_max && !test_bit(ZONE_BELOW_HIGH, &zone->flags)) in nr_pcp_alloc()
3069 struct page *__rmqueue_pcplist(struct zone *zone, unsigned int order, in __rmqueue_pcplist() argument
3079 int batch = nr_pcp_alloc(pcp, zone, order); in __rmqueue_pcplist()
3082 alloced = rmqueue_bulk(zone, order, in __rmqueue_pcplist()
3100 static struct page *rmqueue_pcplist(struct zone *preferred_zone, in rmqueue_pcplist()
3101 struct zone *zone, unsigned int order, in rmqueue_pcplist() argument
3111 pcp = pcp_spin_trylock(zone->per_cpu_pageset); in rmqueue_pcplist()
3124 page = __rmqueue_pcplist(zone, order, migratetype, alloc_flags, pcp, list); in rmqueue_pcplist()
3129 zone_statistics(preferred_zone, zone, 1); in rmqueue_pcplist()
3135 * Allocate a page from the given zone.
3147 struct page *rmqueue(struct zone *preferred_zone, in rmqueue()
3148 struct zone *zone, unsigned int order, in rmqueue() argument
3155 page = rmqueue_pcplist(preferred_zone, zone, order, in rmqueue()
3161 page = rmqueue_buddy(preferred_zone, zone, order, alloc_flags, in rmqueue()
3167 unlikely(test_bit(ZONE_BOOSTED_WATERMARK, &zone->flags))) { in rmqueue()
3168 clear_bit(ZONE_BOOSTED_WATERMARK, &zone->flags); in rmqueue()
3169 wakeup_kswapd(zone, 0, 0, zone_idx(zone)); in rmqueue()
3172 VM_BUG_ON_PAGE(page && bad_range(zone, page), page); in rmqueue()
3182 struct zone *zone) in reserve_highatomic_pageblock() argument
3189 * roughly 1% of a zone. But if 1% of a zone falls below a in reserve_highatomic_pageblock()
3193 if ((zone_managed_pages(zone) / 100) < pageblock_nr_pages) in reserve_highatomic_pageblock()
3195 max_managed = ALIGN((zone_managed_pages(zone) / 100), pageblock_nr_pages); in reserve_highatomic_pageblock()
3196 if (zone->nr_reserved_highatomic >= max_managed) in reserve_highatomic_pageblock()
3199 spin_lock_irqsave(&zone->lock, flags); in reserve_highatomic_pageblock()
3202 if (zone->nr_reserved_highatomic >= max_managed) in reserve_highatomic_pageblock()
3212 if (move_freepages_block(zone, page, mt, MIGRATE_HIGHATOMIC) == -1) in reserve_highatomic_pageblock()
3214 zone->nr_reserved_highatomic += pageblock_nr_pages; in reserve_highatomic_pageblock()
3217 zone->nr_reserved_highatomic += 1 << order; in reserve_highatomic_pageblock()
3221 spin_unlock_irqrestore(&zone->lock, flags); in reserve_highatomic_pageblock()
3239 struct zone *zone; in unreserve_highatomic_pageblock() local
3244 for_each_zone_zonelist_nodemask(zone, z, zonelist, ac->highest_zoneidx, in unreserve_highatomic_pageblock()
3250 if (!force && zone->nr_reserved_highatomic <= in unreserve_highatomic_pageblock()
3254 spin_lock_irqsave(&zone->lock, flags); in unreserve_highatomic_pageblock()
3256 struct free_area *area = &(zone->free_area[order]); in unreserve_highatomic_pageblock()
3271 if (WARN_ON_ONCE(size > zone->nr_reserved_highatomic)) in unreserve_highatomic_pageblock()
3272 size = zone->nr_reserved_highatomic; in unreserve_highatomic_pageblock()
3273 zone->nr_reserved_highatomic -= size; in unreserve_highatomic_pageblock()
3285 ret = move_freepages_block(zone, page, in unreserve_highatomic_pageblock()
3289 move_to_free_list(page, zone, order, in unreserve_highatomic_pageblock()
3298 * so this should not fail on zone boundaries. in unreserve_highatomic_pageblock()
3302 spin_unlock_irqrestore(&zone->lock, flags); in unreserve_highatomic_pageblock()
3306 spin_unlock_irqrestore(&zone->lock, flags); in unreserve_highatomic_pageblock()
3312 static inline long __zone_watermark_unusable_free(struct zone *z, in __zone_watermark_unusable_free()
3336 * one free page of a suitable size. Checking now avoids taking the zone lock
3339 bool __zone_watermark_ok(struct zone *z, unsigned int order, unsigned long mark, in __zone_watermark_ok()
3417 bool zone_watermark_ok(struct zone *z, unsigned int order, unsigned long mark, in zone_watermark_ok()
3424 static inline bool zone_watermark_fast(struct zone *z, unsigned int order, in zone_watermark_fast()
3472 static bool zone_allows_reclaim(struct zone *local_zone, struct zone *zone) in zone_allows_reclaim() argument
3474 return node_distance(zone_to_nid(local_zone), zone_to_nid(zone)) <= in zone_allows_reclaim()
3478 static bool zone_allows_reclaim(struct zone *local_zone, struct zone *zone) in zone_allows_reclaim() argument
3485 * The restriction on ZONE_DMA32 as being a suitable zone to use to avoid
3486 * fragmentation is subtle. If the preferred zone was HIGHMEM then
3487 * premature use of a lower zone may cause lowmem pressure problems that
3488 * are worse than fragmentation. If the next zone is ZONE_DMA then it is
3493 alloc_flags_nofragment(struct zone *zone, gfp_t gfp_mask) in alloc_flags_nofragment() argument
3509 if (!zone) in alloc_flags_nofragment()
3512 if (zone_idx(zone) != ZONE_NORMAL) in alloc_flags_nofragment()
3517 * the pointer is within zone->zone_pgdat->node_zones[]. Also assume in alloc_flags_nofragment()
3521 if (nr_online_nodes > 1 && !populated_zone(--zone)) in alloc_flags_nofragment()
3549 struct zone *zone; in get_page_from_freelist() local
3556 * Scan zonelist, looking for a zone with enough free. in get_page_from_freelist()
3561 for_next_zone_zonelist_nodemask(zone, z, ac->highest_zoneidx, in get_page_from_freelist()
3568 !__cpuset_zone_allowed(zone, gfp_mask)) in get_page_from_freelist()
3590 if (last_pgdat != zone->zone_pgdat) { in get_page_from_freelist()
3591 last_pgdat = zone->zone_pgdat; in get_page_from_freelist()
3592 last_pgdat_dirty_ok = node_dirty_ok(zone->zone_pgdat); in get_page_from_freelist()
3600 zone != zonelist_zone(ac->preferred_zoneref)) { in get_page_from_freelist()
3609 if (zone_to_nid(zone) != local_nid) { in get_page_from_freelist()
3615 cond_accept_memory(zone, order, alloc_flags); in get_page_from_freelist()
3624 if (test_bit(ZONE_BELOW_HIGH, &zone->flags)) in get_page_from_freelist()
3627 mark = high_wmark_pages(zone); in get_page_from_freelist()
3628 if (zone_watermark_fast(zone, order, mark, in get_page_from_freelist()
3633 set_bit(ZONE_BELOW_HIGH, &zone->flags); in get_page_from_freelist()
3636 mark = wmark_pages(zone, alloc_flags & ALLOC_WMARK_MASK); in get_page_from_freelist()
3637 if (!zone_watermark_fast(zone, order, mark, in get_page_from_freelist()
3642 if (cond_accept_memory(zone, order, alloc_flags)) in get_page_from_freelist()
3646 * Watermark failed for this zone, but see if we can in get_page_from_freelist()
3647 * grow this zone if it contains deferred pages. in get_page_from_freelist()
3650 if (_deferred_grow_zone(zone, order)) in get_page_from_freelist()
3659 !zone_allows_reclaim(zonelist_zone(ac->preferred_zoneref), zone)) in get_page_from_freelist()
3662 ret = node_reclaim(zone->zone_pgdat, gfp_mask, order); in get_page_from_freelist()
3672 if (zone_watermark_ok(zone, order, mark, in get_page_from_freelist()
3681 page = rmqueue(zonelist_zone(ac->preferred_zoneref), zone, order, in get_page_from_freelist()
3691 reserve_highatomic_pageblock(page, order, zone); in get_page_from_freelist()
3695 if (cond_accept_memory(zone, order, alloc_flags)) in get_page_from_freelist()
3698 /* Try again if zone has deferred pages */ in get_page_from_freelist()
3700 if (_deferred_grow_zone(zone, order)) in get_page_from_freelist()
3902 * At least in one zone compaction wasn't deferred or skipped, so let's in __alloc_pages_direct_compact()
3916 struct zone *zone = page_zone(page); in __alloc_pages_direct_compact() local
3918 zone->compact_blockskip_flush = false; in __alloc_pages_direct_compact()
3919 compaction_defer_reset(zone, order, true); in __alloc_pages_direct_compact()
4016 struct zone *zone; in should_compact_retry() local
4028 for_each_zone_zonelist_nodemask(zone, z, ac->zonelist, in should_compact_retry()
4030 if (zone_watermark_ok(zone, 0, min_wmark_pages(zone), in should_compact_retry()
4186 struct zone *zone; in wake_all_kswapds() local
4196 for_each_zone_zonelist_nodemask(zone, z, ac->zonelist, highest_zoneidx, in wake_all_kswapds()
4198 if (!managed_zone(zone)) in wake_all_kswapds()
4200 if (last_pgdat == zone->zone_pgdat) in wake_all_kswapds()
4202 wakeup_kswapd(zone, gfp_mask, reclaim_order, highest_zoneidx); in wake_all_kswapds()
4203 last_pgdat = zone->zone_pgdat; in wake_all_kswapds()
4316 struct zone *zone; in should_reclaim_retry() local
4340 for_each_zone_zonelist_nodemask(zone, z, ac->zonelist, in should_reclaim_retry()
4344 unsigned long min_wmark = min_wmark_pages(zone); in should_reclaim_retry()
4349 !__cpuset_zone_allowed(zone, gfp_mask)) in should_reclaim_retry()
4352 available = reclaimable = zone_reclaimable_pages(zone); in should_reclaim_retry()
4353 available += zone_page_state_snapshot(zone, NR_FREE_PAGES); in should_reclaim_retry()
4359 wmark = __zone_watermark_ok(zone, order, min_wmark, in should_reclaim_retry()
4487 * any suitable zone to satisfy the request - e.g. non-movable in __alloc_pages_slowpath()
4754 /* Dirty zone balancing only done in the fast path */ in prepare_alloc_pages()
4758 * The preferred zone is used for statistics but crucially it is in prepare_alloc_pages()
4790 struct zone *zone; in alloc_pages_bulk_noprof() local
4841 /* Find an allowed local zone that meets the low watermark. */ in alloc_pages_bulk_noprof()
4843 for_next_zone_zonelist_nodemask(zone, z, ac.highest_zoneidx, ac.nodemask) { in alloc_pages_bulk_noprof()
4847 !__cpuset_zone_allowed(zone, gfp)) { in alloc_pages_bulk_noprof()
4851 if (nr_online_nodes > 1 && zone != zonelist_zone(ac.preferred_zoneref) && in alloc_pages_bulk_noprof()
4852 zone_to_nid(zone) != zonelist_node_idx(ac.preferred_zoneref)) { in alloc_pages_bulk_noprof()
4856 cond_accept_memory(zone, 0, alloc_flags); in alloc_pages_bulk_noprof()
4858 mark = wmark_pages(zone, alloc_flags & ALLOC_WMARK_MASK) + nr_pages; in alloc_pages_bulk_noprof()
4859 if (zone_watermark_fast(zone, 0, mark, in alloc_pages_bulk_noprof()
4865 if (cond_accept_memory(zone, 0, alloc_flags)) in alloc_pages_bulk_noprof()
4868 /* Try again if zone has deferred pages */ in alloc_pages_bulk_noprof()
4870 if (_deferred_grow_zone(zone, 0)) in alloc_pages_bulk_noprof()
4879 if (unlikely(!zone)) in alloc_pages_bulk_noprof()
4884 pcp = pcp_spin_trylock(zone->per_cpu_pageset); in alloc_pages_bulk_noprof()
4898 page = __rmqueue_pcplist(zone, 0, ac.migratetype, alloc_flags, in alloc_pages_bulk_noprof()
4918 __count_zid_vm_events(PGALLOC, zone_idx(zone), nr_account); in alloc_pages_bulk_noprof()
4919 zone_statistics(zonelist_zone(ac.preferred_zoneref), zone, nr_account); in alloc_pages_bulk_noprof()
5205 * @offset: The zone index of the highest zone
5208 * high watermark within all zones at or below a given zone index. For each
5209 * zone, the number of pages is calculated as:
5218 struct zone *zone; in nr_free_zone_pages() local
5225 for_each_zone_zonelist(zone, z, zonelist, offset) { in nr_free_zone_pages()
5226 unsigned long size = zone_managed_pages(zone); in nr_free_zone_pages()
5227 unsigned long high = high_wmark_pages(zone); in nr_free_zone_pages()
5250 static void zoneref_set_zone(struct zone *zone, struct zoneref *zoneref) in zoneref_set_zone() argument
5252 zoneref->zone = zone; in zoneref_set_zone()
5253 zoneref->zone_idx = zone_idx(zone); in zoneref_set_zone()
5257 * Builds allocation fallback zone lists.
5263 struct zone *zone; in build_zonerefs_node() local
5269 zone = pgdat->node_zones + zone_type; in build_zonerefs_node()
5270 if (populated_zone(zone)) { in build_zonerefs_node()
5271 zoneref_set_zone(zone, &zonerefs[nr_zones++]); in build_zonerefs_node()
5376 * This results in maximum locality--normal zone overflows into local
5377 * DMA zone, if any--but risks exhausting DMA zone.
5395 zonerefs->zone = NULL; in build_zonelists_in_node_order()
5410 zonerefs->zone = NULL; in build_thisnode_zonelists()
5451 * I.e., first node id of first zone in arg node's generic zonelist.
5479 zonerefs->zone = NULL; in build_zonelists()
5498 * Other parts of the kernel may not check if the zone is available.
5551 * i.e., the node of the first zone in the generic zonelist. in __build_all_zonelists()
5576 * each zone will be allocated later when the per cpu in build_all_zonelists_init()
5614 * more accurate, but expensive to check per-zone. This check is in build_all_zonelists()
5628 pr_info("Policy zone: %s\n", zone_names[policy_zone]); in build_all_zonelists()
5632 static int zone_batchsize(struct zone *zone) in zone_batchsize() argument
5639 * of the zone or 1MB, whichever is smaller. The batch in zone_batchsize()
5641 * and zone lock contention. in zone_batchsize()
5643 batch = min(zone_managed_pages(zone) >> 10, SZ_1M / PAGE_SIZE); in zone_batchsize()
5681 static int zone_highsize(struct zone *zone, int batch, int cpu_online, in zone_highsize() argument
5691 * By default, the high value of the pcp is based on the zone in zone_highsize()
5695 total_pages = low_wmark_pages(zone); in zone_highsize()
5700 * zone. in zone_highsize()
5702 total_pages = zone_managed_pages(zone) / high_fraction; in zone_highsize()
5706 * Split the high value across all online CPUs local to the zone. Note in zone_highsize()
5713 nr_split_cpus = cpumask_weight(cpumask_of_node(zone_to_nid(zone))) + cpu_online; in zone_highsize()
5778 static void __zone_set_pageset_high_and_batch(struct zone *zone, unsigned long high_min, in __zone_set_pageset_high_and_batch() argument
5785 pcp = per_cpu_ptr(zone->per_cpu_pageset, cpu); in __zone_set_pageset_high_and_batch()
5792 * zone based on the zone's size.
5794 static void zone_set_pageset_high_and_batch(struct zone *zone, int cpu_online) in zone_set_pageset_high_and_batch() argument
5798 new_batch = max(1, zone_batchsize(zone)); in zone_set_pageset_high_and_batch()
5800 new_high_min = zone_highsize(zone, new_batch, cpu_online, in zone_set_pageset_high_and_batch()
5808 new_high_min = zone_highsize(zone, new_batch, cpu_online, 0); in zone_set_pageset_high_and_batch()
5809 new_high_max = zone_highsize(zone, new_batch, cpu_online, in zone_set_pageset_high_and_batch()
5813 if (zone->pageset_high_min == new_high_min && in zone_set_pageset_high_and_batch()
5814 zone->pageset_high_max == new_high_max && in zone_set_pageset_high_and_batch()
5815 zone->pageset_batch == new_batch) in zone_set_pageset_high_and_batch()
5818 zone->pageset_high_min = new_high_min; in zone_set_pageset_high_and_batch()
5819 zone->pageset_high_max = new_high_max; in zone_set_pageset_high_and_batch()
5820 zone->pageset_batch = new_batch; in zone_set_pageset_high_and_batch()
5822 __zone_set_pageset_high_and_batch(zone, new_high_min, new_high_max, in zone_set_pageset_high_and_batch()
5826 void __meminit setup_zone_pageset(struct zone *zone) in setup_zone_pageset() argument
5832 zone->per_cpu_zonestats = alloc_percpu(struct per_cpu_zonestat); in setup_zone_pageset()
5834 zone->per_cpu_pageset = alloc_percpu(struct per_cpu_pages); in setup_zone_pageset()
5839 pcp = per_cpu_ptr(zone->per_cpu_pageset, cpu); in setup_zone_pageset()
5840 pzstats = per_cpu_ptr(zone->per_cpu_zonestats, cpu); in setup_zone_pageset()
5844 zone_set_pageset_high_and_batch(zone, 0); in setup_zone_pageset()
5848 * The zone indicated has a new number of managed_pages; batch sizes and percpu
5851 static void zone_pcp_update(struct zone *zone, int cpu_online) in zone_pcp_update() argument
5854 zone_set_pageset_high_and_batch(zone, cpu_online); in zone_pcp_update()
5858 static void zone_pcp_update_cacheinfo(struct zone *zone, unsigned int cpu) in zone_pcp_update_cacheinfo() argument
5863 pcp = per_cpu_ptr(zone->per_cpu_pageset, cpu); in zone_pcp_update_cacheinfo()
5869 * This can reduce zone lock contention without hurting in zone_pcp_update_cacheinfo()
5882 struct zone *zone; in setup_pcp_cacheinfo() local
5884 for_each_populated_zone(zone) in setup_pcp_cacheinfo()
5885 zone_pcp_update_cacheinfo(zone, cpu); in setup_pcp_cacheinfo()
5895 struct zone *zone; in setup_per_cpu_pageset() local
5898 for_each_populated_zone(zone) in setup_per_cpu_pageset()
5899 setup_zone_pageset(zone); in setup_per_cpu_pageset()
5920 __meminit void zone_pcp_init(struct zone *zone) in zone_pcp_init() argument
5927 zone->per_cpu_pageset = &boot_pageset; in zone_pcp_init()
5928 zone->per_cpu_zonestats = &boot_zonestats; in zone_pcp_init()
5929 zone->pageset_high_min = BOOT_PAGESET_HIGH; in zone_pcp_init()
5930 zone->pageset_high_max = BOOT_PAGESET_HIGH; in zone_pcp_init()
5931 zone->pageset_batch = BOOT_PAGESET_BATCH; in zone_pcp_init()
5933 if (populated_zone(zone)) in zone_pcp_init()
5934 pr_debug(" %s zone: %lu pages, LIFO batch:%u\n", zone->name, in zone_pcp_init()
5935 zone->present_pages, zone_batchsize(zone)); in zone_pcp_init()
5996 struct zone *zone; in page_alloc_cpu_dead() local
6019 for_each_populated_zone(zone) in page_alloc_cpu_dead()
6020 zone_pcp_update(zone, 0); in page_alloc_cpu_dead()
6027 struct zone *zone; in page_alloc_cpu_online() local
6029 for_each_populated_zone(zone) in page_alloc_cpu_online()
6030 zone_pcp_update(zone, 1); in page_alloc_cpu_online()
6060 struct zone *zone = pgdat->node_zones + i; in calculate_totalreserve_pages() local
6062 unsigned long managed_pages = zone_managed_pages(zone); in calculate_totalreserve_pages()
6064 /* Find valid and maximum lowmem_reserve in the zone */ in calculate_totalreserve_pages()
6066 if (zone->lowmem_reserve[j] > max) in calculate_totalreserve_pages()
6067 max = zone->lowmem_reserve[j]; in calculate_totalreserve_pages()
6071 max += high_wmark_pages(zone); in calculate_totalreserve_pages()
6087 * sysctl_lowmem_reserve_ratio changes. Ensures that each zone
6089 * pages are left in the zone after a successful __alloc_pages().
6098 struct zone *zone = &pgdat->node_zones[i]; in setup_per_zone_lowmem_reserve() local
6100 bool clear = !ratio || !zone_managed_pages(zone); in setup_per_zone_lowmem_reserve()
6104 struct zone *upper_zone = &pgdat->node_zones[j]; in setup_per_zone_lowmem_reserve()
6109 zone->lowmem_reserve[j] = 0; in setup_per_zone_lowmem_reserve()
6111 zone->lowmem_reserve[j] = managed_pages / ratio; in setup_per_zone_lowmem_reserve()
6112 trace_mm_setup_per_zone_lowmem_reserve(zone, upper_zone, in setup_per_zone_lowmem_reserve()
6113 zone->lowmem_reserve[j]); in setup_per_zone_lowmem_reserve()
6126 struct zone *zone; in __setup_per_zone_wmarks() local
6130 for_each_zone(zone) { in __setup_per_zone_wmarks()
6131 if (!is_highmem(zone) && zone_idx(zone) != ZONE_MOVABLE) in __setup_per_zone_wmarks()
6132 lowmem_pages += zone_managed_pages(zone); in __setup_per_zone_wmarks()
6135 for_each_zone(zone) { in __setup_per_zone_wmarks()
6138 spin_lock_irqsave(&zone->lock, flags); in __setup_per_zone_wmarks()
6139 tmp = (u64)pages_min * zone_managed_pages(zone); in __setup_per_zone_wmarks()
6141 if (is_highmem(zone) || zone_idx(zone) == ZONE_MOVABLE) { in __setup_per_zone_wmarks()
6153 min_pages = zone_managed_pages(zone) / 1024; in __setup_per_zone_wmarks()
6155 zone->_watermark[WMARK_MIN] = min_pages; in __setup_per_zone_wmarks()
6158 * If it's a lowmem zone, reserve a number of pages in __setup_per_zone_wmarks()
6159 * proportionate to the zone's size. in __setup_per_zone_wmarks()
6161 zone->_watermark[WMARK_MIN] = tmp; in __setup_per_zone_wmarks()
6170 mult_frac(zone_managed_pages(zone), in __setup_per_zone_wmarks()
6173 zone->watermark_boost = 0; in __setup_per_zone_wmarks()
6174 zone->_watermark[WMARK_LOW] = min_wmark_pages(zone) + tmp; in __setup_per_zone_wmarks()
6175 zone->_watermark[WMARK_HIGH] = low_wmark_pages(zone) + tmp; in __setup_per_zone_wmarks()
6176 zone->_watermark[WMARK_PROMO] = high_wmark_pages(zone) + tmp; in __setup_per_zone_wmarks()
6177 trace_mm_setup_per_zone_wmarks(zone); in __setup_per_zone_wmarks()
6179 spin_unlock_irqrestore(&zone->lock, flags); in __setup_per_zone_wmarks()
6190 * Ensures that the watermark[min,low,high] values for each zone are set
6195 struct zone *zone; in setup_per_zone_wmarks() local
6206 for_each_zone(zone) in setup_per_zone_wmarks()
6207 zone_pcp_update(zone, 0); in setup_per_zone_wmarks()
6308 struct zone *zone; in setup_min_unmapped_ratio() local
6313 for_each_zone(zone) in setup_min_unmapped_ratio()
6314 zone->zone_pgdat->min_unmapped_pages += (zone_managed_pages(zone) * in setup_min_unmapped_ratio()
6336 struct zone *zone; in setup_min_slab_ratio() local
6341 for_each_zone(zone) in setup_min_slab_ratio()
6342 zone->zone_pgdat->min_slab_pages += (zone_managed_pages(zone) * in setup_min_slab_ratio()
6368 * if in function of the boot time zone sizes.
6387 * percpu_pagelist_high_fraction - changes the pcp->high for each zone on each
6388 * cpu. It is the fraction of total pages in each zone that a hot per cpu
6394 struct zone *zone; in percpu_pagelist_high_fraction_sysctl_handler() local
6417 for_each_populated_zone(zone) in percpu_pagelist_high_fraction_sysctl_handler()
6418 zone_set_pageset_high_and_batch(zone, 0); in percpu_pagelist_high_fraction_sysctl_handler()
6524 * [start, end) must belong to a single zone.
6537 .nid = zone_to_nid(cc->zone), in __alloc_contig_migrate_range()
6566 nr_reclaimed = reclaim_clean_pages_from_list(cc->zone, in __alloc_contig_migrate_range()
6676 * @gfp_mask: GFP mask. Node/zone/placement hints are ignored; only some
6681 * belong to a single zone.
6700 .zone = page_zone(pfn_to_page(start)), in alloc_contig_range_noprof()
6737 drain_all_pages(cc.zone); in alloc_contig_range_noprof()
6777 * We don't have to hold zone->lock here because the pages are in alloc_contig_range_noprof()
6830 static bool pfn_range_valid_contig(struct zone *z, unsigned long start_pfn, in pfn_range_valid_contig()
6853 static bool zone_spans_last_pfn(const struct zone *zone, in zone_spans_last_pfn() argument
6858 return zone_spans_pfn(zone, last_pfn); in zone_spans_last_pfn()
6864 * @gfp_mask: GFP mask. Node/zone/placement hints limit the search; only some
6889 struct zone *zone; in alloc_contig_pages_noprof() local
6893 for_each_zone_zonelist_nodemask(zone, z, zonelist, in alloc_contig_pages_noprof()
6895 spin_lock_irqsave(&zone->lock, flags); in alloc_contig_pages_noprof()
6897 pfn = ALIGN(zone->zone_start_pfn, nr_pages); in alloc_contig_pages_noprof()
6898 while (zone_spans_last_pfn(zone, pfn, nr_pages)) { in alloc_contig_pages_noprof()
6899 if (pfn_range_valid_contig(zone, pfn, nr_pages)) { in alloc_contig_pages_noprof()
6901 * We release the zone lock here because in alloc_contig_pages_noprof()
6902 * alloc_contig_range() will also lock the zone in alloc_contig_pages_noprof()
6907 spin_unlock_irqrestore(&zone->lock, flags); in alloc_contig_pages_noprof()
6912 spin_lock_irqsave(&zone->lock, flags); in alloc_contig_pages_noprof()
6916 spin_unlock_irqrestore(&zone->lock, flags); in alloc_contig_pages_noprof()
6949 * Effectively disable pcplists for the zone by setting the high limit to 0
6956 void zone_pcp_disable(struct zone *zone) in zone_pcp_disable() argument
6959 __zone_set_pageset_high_and_batch(zone, 0, 0, 1); in zone_pcp_disable()
6960 __drain_all_pages(zone, true); in zone_pcp_disable()
6963 void zone_pcp_enable(struct zone *zone) in zone_pcp_enable() argument
6965 __zone_set_pageset_high_and_batch(zone, zone->pageset_high_min, in zone_pcp_enable()
6966 zone->pageset_high_max, zone->pageset_batch); in zone_pcp_enable()
6970 void zone_pcp_reset(struct zone *zone) in zone_pcp_reset() argument
6975 if (zone->per_cpu_pageset != &boot_pageset) { in zone_pcp_reset()
6977 pzstats = per_cpu_ptr(zone->per_cpu_zonestats, cpu); in zone_pcp_reset()
6978 drain_zonestat(zone, pzstats); in zone_pcp_reset()
6980 free_percpu(zone->per_cpu_pageset); in zone_pcp_reset()
6981 zone->per_cpu_pageset = &boot_pageset; in zone_pcp_reset()
6982 if (zone->per_cpu_zonestats != &boot_zonestats) { in zone_pcp_reset()
6983 free_percpu(zone->per_cpu_zonestats); in zone_pcp_reset()
6984 zone->per_cpu_zonestats = &boot_zonestats; in zone_pcp_reset()
6991 * All pages in the range must be in a single zone, must not contain holes,
7004 struct zone *zone; in __offline_isolated_pages() local
7008 zone = page_zone(pfn_to_page(pfn)); in __offline_isolated_pages()
7009 spin_lock_irqsave(&zone->lock, flags); in __offline_isolated_pages()
7036 del_page_from_free_list(page, zone, order, MIGRATE_ISOLATE); in __offline_isolated_pages()
7039 spin_unlock_irqrestore(&zone->lock, flags); in __offline_isolated_pages()
7046 * This function returns a stable result only if called under zone lock.
7066 static inline void add_to_free_list(struct page *page, struct zone *zone, in add_to_free_list() argument
7070 __add_to_free_list(page, zone, order, migratetype, tail); in add_to_free_list()
7071 account_freepages(zone, 1 << order, migratetype); in add_to_free_list()
7078 static void break_down_buddy_pages(struct zone *zone, struct page *page, in break_down_buddy_pages() argument
7096 if (set_page_guard(zone, current_buddy, high)) in break_down_buddy_pages()
7099 add_to_free_list(current_buddy, zone, high, migratetype, false); in break_down_buddy_pages()
7109 struct zone *zone = page_zone(page); in take_page_off_buddy() local
7115 spin_lock_irqsave(&zone->lock, flags); in take_page_off_buddy()
7125 del_page_from_free_list(page_head, zone, page_order, in take_page_off_buddy()
7127 break_down_buddy_pages(zone, page_head, page, 0, in take_page_off_buddy()
7136 spin_unlock_irqrestore(&zone->lock, flags); in take_page_off_buddy()
7145 struct zone *zone = page_zone(page); in put_page_back_buddy() local
7149 spin_lock_irqsave(&zone->lock, flags); in put_page_back_buddy()
7155 __free_one_page(page, pfn, zone, 0, migratetype, FPI_NONE); in put_page_back_buddy()
7160 spin_unlock_irqrestore(&zone->lock, flags); in put_page_back_buddy()
7172 struct zone *zone = &pgdat->node_zones[ZONE_DMA]; in has_managed_dma() local
7174 if (managed_zone(zone)) in has_managed_dma()
7206 static void __accept_page(struct zone *zone, unsigned long *flags, in __accept_page() argument
7210 account_freepages(zone, -MAX_ORDER_NR_PAGES, MIGRATE_MOVABLE); in __accept_page()
7211 __mod_zone_page_state(zone, NR_UNACCEPTED, -MAX_ORDER_NR_PAGES); in __accept_page()
7213 spin_unlock_irqrestore(&zone->lock, *flags); in __accept_page()
7222 struct zone *zone = page_zone(page); in accept_page() local
7225 spin_lock_irqsave(&zone->lock, flags); in accept_page()
7227 spin_unlock_irqrestore(&zone->lock, flags); in accept_page()
7231 /* Unlocks zone->lock */ in accept_page()
7232 __accept_page(zone, &flags, page); in accept_page()
7235 static bool try_to_accept_memory_one(struct zone *zone) in try_to_accept_memory_one() argument
7240 spin_lock_irqsave(&zone->lock, flags); in try_to_accept_memory_one()
7241 page = list_first_entry_or_null(&zone->unaccepted_pages, in try_to_accept_memory_one()
7244 spin_unlock_irqrestore(&zone->lock, flags); in try_to_accept_memory_one()
7248 /* Unlocks zone->lock */ in try_to_accept_memory_one()
7249 __accept_page(zone, &flags, page); in try_to_accept_memory_one()
7254 static bool cond_accept_memory(struct zone *zone, unsigned int order, in cond_accept_memory() argument
7260 if (list_empty(&zone->unaccepted_pages)) in cond_accept_memory()
7267 wmark = promo_wmark_pages(zone); in cond_accept_memory()
7275 return try_to_accept_memory_one(zone); in cond_accept_memory()
7279 (zone_page_state(zone, NR_FREE_PAGES) - in cond_accept_memory()
7280 __zone_watermark_unusable_free(zone, order, 0) - in cond_accept_memory()
7281 zone_page_state(zone, NR_UNACCEPTED)); in cond_accept_memory()
7284 if (!try_to_accept_memory_one(zone)) in cond_accept_memory()
7295 struct zone *zone = page_zone(page); in __free_unaccepted() local
7301 spin_lock_irqsave(&zone->lock, flags); in __free_unaccepted()
7302 list_add_tail(&page->lru, &zone->unaccepted_pages); in __free_unaccepted()
7303 account_freepages(zone, MAX_ORDER_NR_PAGES, MIGRATE_MOVABLE); in __free_unaccepted()
7304 __mod_zone_page_state(zone, NR_UNACCEPTED, MAX_ORDER_NR_PAGES); in __free_unaccepted()
7306 spin_unlock_irqrestore(&zone->lock, flags); in __free_unaccepted()
7318 static bool cond_accept_memory(struct zone *zone, unsigned int order, in cond_accept_memory() argument
7402 * If it's empty attempt to spin_trylock zone->lock. in try_alloc_pages_noprof()