diff options
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 144 |
1 files changed, 87 insertions, 57 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 3b97e17806be..f95e1d2386a1 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -840,21 +840,24 @@ void init_mem_debugging_and_hardening(void) } #endif - if (_init_on_alloc_enabled_early) { - if (page_poisoning_requested) - pr_info("mem auto-init: CONFIG_PAGE_POISONING is on, " - "will take precedence over init_on_alloc\n"); - else - static_branch_enable(&init_on_alloc); - } - if (_init_on_free_enabled_early) { - if (page_poisoning_requested) - pr_info("mem auto-init: CONFIG_PAGE_POISONING is on, " - "will take precedence over init_on_free\n"); - else - static_branch_enable(&init_on_free); + if ((_init_on_alloc_enabled_early || _init_on_free_enabled_early) && + page_poisoning_requested) { + pr_info("mem auto-init: CONFIG_PAGE_POISONING is on, " + "will take precedence over init_on_alloc and init_on_free\n"); + _init_on_alloc_enabled_early = false; + _init_on_free_enabled_early = false; } + if (_init_on_alloc_enabled_early) + static_branch_enable(&init_on_alloc); + else + static_branch_disable(&init_on_alloc); + + if (_init_on_free_enabled_early) + static_branch_enable(&init_on_free); + else + static_branch_disable(&init_on_free); + #ifdef CONFIG_DEBUG_PAGEALLOC if (!debug_pagealloc_enabled()) return; @@ -3450,19 +3453,10 @@ void free_unref_page_list(struct list_head *list) * comment in free_unref_page. */ migratetype = get_pcppage_migratetype(page); - if (unlikely(migratetype >= MIGRATE_PCPTYPES)) { - if (unlikely(is_migrate_isolate(migratetype))) { - list_del(&page->lru); - free_one_page(page_zone(page), page, pfn, 0, - migratetype, FPI_NONE); - continue; - } - - /* - * Non-isolated types over MIGRATE_PCPTYPES get added - * to the MIGRATE_MOVABLE pcp list. - */ - set_pcppage_migratetype(page, MIGRATE_MOVABLE); + if (unlikely(is_migrate_isolate(migratetype))) { + list_del(&page->lru); + free_one_page(page_zone(page), page, pfn, 0, migratetype, FPI_NONE); + continue; } set_page_private(page, pfn); @@ -3472,7 +3466,15 @@ void free_unref_page_list(struct list_head *list) list_for_each_entry_safe(page, next, list, lru) { pfn = page_private(page); set_page_private(page, 0); + + /* + * Non-isolated types over MIGRATE_PCPTYPES get added + * to the MIGRATE_MOVABLE pcp list. + */ migratetype = get_pcppage_migratetype(page); + if (unlikely(migratetype >= MIGRATE_PCPTYPES)) + migratetype = MIGRATE_MOVABLE; + trace_mm_page_free_batched(page); free_unref_page_commit(page, pfn, migratetype, 0); @@ -3820,7 +3822,7 @@ static inline bool __should_fail_alloc_page(gfp_t gfp_mask, unsigned int order) #endif /* CONFIG_FAIL_PAGE_ALLOC */ -static noinline bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order) +noinline bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order) { return __should_fail_alloc_page(gfp_mask, order); } @@ -4209,7 +4211,7 @@ static void warn_alloc_show_mem(gfp_t gfp_mask, nodemask_t *nodemask) if (tsk_is_oom_victim(current) || (current->flags & (PF_MEMALLOC | PF_EXITING))) filter &= ~SHOW_MEM_FILTER_NODES; - if (in_interrupt() || !(gfp_mask & __GFP_DIRECT_RECLAIM)) + if (!in_task() || !(gfp_mask & __GFP_DIRECT_RECLAIM)) filter &= ~SHOW_MEM_FILTER_NODES; show_mem(filter, nodemask); @@ -4547,14 +4549,14 @@ static bool __need_reclaim(gfp_t gfp_mask) return true; } -void __fs_reclaim_acquire(void) +void __fs_reclaim_acquire(unsigned long ip) { - lock_map_acquire(&__fs_reclaim_map); + lock_acquire_exclusive(&__fs_reclaim_map, 0, 0, NULL, ip); } -void __fs_reclaim_release(void) +void __fs_reclaim_release(unsigned long ip) { - lock_map_release(&__fs_reclaim_map); + lock_release(&__fs_reclaim_map, ip); } void fs_reclaim_acquire(gfp_t gfp_mask) @@ -4563,7 +4565,7 @@ void fs_reclaim_acquire(gfp_t gfp_mask) if (__need_reclaim(gfp_mask)) { if (gfp_mask & __GFP_FS) - __fs_reclaim_acquire(); + __fs_reclaim_acquire(_RET_IP_); #ifdef CONFIG_MMU_NOTIFIER lock_map_acquire(&__mmu_notifier_invalidate_range_start_map); @@ -4580,7 +4582,7 @@ void fs_reclaim_release(gfp_t gfp_mask) if (__need_reclaim(gfp_mask)) { if (gfp_mask & __GFP_FS) - __fs_reclaim_release(); + __fs_reclaim_release(_RET_IP_); } } EXPORT_SYMBOL_GPL(fs_reclaim_release); @@ -4695,7 +4697,7 @@ gfp_to_alloc_flags(gfp_t gfp_mask) * comment for __cpuset_node_allowed(). */ alloc_flags &= ~ALLOC_CPUSET; - } else if (unlikely(rt_task(current)) && !in_interrupt()) + } else if (unlikely(rt_task(current)) && in_task()) alloc_flags |= ALLOC_HARDER; alloc_flags = gfp_to_alloc_flags_cma(gfp_mask, alloc_flags); @@ -5155,7 +5157,7 @@ static inline bool prepare_alloc_pages(gfp_t gfp_mask, unsigned int order, * When we are in the interrupt context, it is irrelevant * to the current task context. It means that any node ok. */ - if (!in_interrupt() && !ac->nodemask) + if (in_task() && !ac->nodemask) ac->nodemask = &cpuset_current_mems_allowed; else *alloc_flags |= ALLOC_CPUSET; @@ -5221,9 +5223,6 @@ unsigned long __alloc_pages_bulk(gfp_t gfp, int preferred_nid, unsigned int alloc_flags = ALLOC_WMARK_LOW; int nr_populated = 0, nr_account = 0; - if (unlikely(nr_pages <= 0)) - return 0; - /* * Skip populated array elements to determine if any pages need * to be allocated before disabling IRQs. @@ -5231,19 +5230,35 @@ unsigned long __alloc_pages_bulk(gfp_t gfp, int preferred_nid, while (page_array && nr_populated < nr_pages && page_array[nr_populated]) nr_populated++; + /* No pages requested? */ + if (unlikely(nr_pages <= 0)) + goto out; + /* Already populated array? */ if (unlikely(page_array && nr_pages - nr_populated == 0)) - return nr_populated; + goto out; /* Use the single page allocator for one page. */ if (nr_pages - nr_populated == 1) goto failed; +#ifdef CONFIG_PAGE_OWNER + /* + * PAGE_OWNER may recurse into the allocator to allocate space to + * save the stack with pagesets.lock held. Releasing/reacquiring + * removes much of the performance benefit of bulk allocation so + * force the caller to allocate one page at a time as it'll have + * similar performance to added complexity to the bulk allocator. + */ + if (static_branch_unlikely(&page_owner_inited)) + goto failed; +#endif + /* May set ALLOC_NOFRAGMENT, fragmentation will return 1 page. */ gfp &= gfp_allowed_mask; alloc_gfp = gfp; if (!prepare_alloc_pages(gfp, 0, preferred_nid, nodemask, &ac, &alloc_gfp, &alloc_flags)) - return 0; + goto out; gfp = alloc_gfp; /* Find an allowed local zone that meets the low watermark. */ @@ -5311,6 +5326,7 @@ unsigned long __alloc_pages_bulk(gfp_t gfp, int preferred_nid, __count_zid_vm_events(PGALLOC, zone_idx(zone), nr_account); zone_statistics(ac.preferred_zoneref->zone, zone, nr_account); +out: return nr_populated; failed_irq: @@ -5326,7 +5342,7 @@ failed: nr_populated++; } - return nr_populated; + goto out; } EXPORT_SYMBOL_GPL(__alloc_pages_bulk); @@ -5887,6 +5903,7 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask) " unevictable:%lu dirty:%lu writeback:%lu\n" " slab_reclaimable:%lu slab_unreclaimable:%lu\n" " mapped:%lu shmem:%lu pagetables:%lu bounce:%lu\n" + " kernel_misc_reclaimable:%lu\n" " free:%lu free_pcp:%lu free_cma:%lu\n", global_node_page_state(NR_ACTIVE_ANON), global_node_page_state(NR_INACTIVE_ANON), @@ -5903,6 +5920,7 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask) global_node_page_state(NR_SHMEM), global_node_page_state(NR_PAGETABLE), global_zone_page_state(NR_BOUNCE), + global_node_page_state(NR_KERNEL_MISC_RECLAIMABLE), global_zone_page_state(NR_FREE_PAGES), free_pcp, global_zone_page_state(NR_FREE_CMA_PAGES)); @@ -6139,7 +6157,7 @@ static int node_load[MAX_NUMNODES]; * * Return: node id of the found node or %NUMA_NO_NODE if no node is found. */ -static int find_next_best_node(int node, nodemask_t *used_node_mask) +int find_next_best_node(int node, nodemask_t *used_node_mask) { int n, val; int min_val = INT_MAX; @@ -6624,7 +6642,6 @@ static void __meminit zone_init_free_lists(struct zone *zone) } } -#if !defined(CONFIG_FLATMEM) /* * Only struct pages that correspond to ranges defined by memblock.memory * are zeroed and initialized by going through __init_single_page() during @@ -6669,13 +6686,6 @@ static void __init init_unavailable_range(unsigned long spfn, pr_info("On node %d, zone %s: %lld pages in unavailable ranges", node, zone_names[zone], pgcnt); } -#else -static inline void init_unavailable_range(unsigned long spfn, - unsigned long epfn, - int zone, int node) -{ -} -#endif static void __init memmap_init_zone_range(struct zone *zone, unsigned long start_pfn, @@ -6705,7 +6715,7 @@ static void __init memmap_init(void) { unsigned long start_pfn, end_pfn; unsigned long hole_pfn = 0; - int i, j, zone_id, nid; + int i, j, zone_id = 0, nid; for_each_mem_pfn_range(i, MAX_NUMNODES, &start_pfn, &end_pfn, &nid) { struct pglist_data *node = NODE_DATA(nid); @@ -6738,6 +6748,26 @@ static void __init memmap_init(void) init_unavailable_range(hole_pfn, end_pfn, zone_id, nid); } +void __init *memmap_alloc(phys_addr_t size, phys_addr_t align, + phys_addr_t min_addr, int nid, bool exact_nid) +{ + void *ptr; + + if (exact_nid) + ptr = memblock_alloc_exact_nid_raw(size, align, min_addr, + MEMBLOCK_ALLOC_ACCESSIBLE, + nid); + else + ptr = memblock_alloc_try_nid_raw(size, align, min_addr, + MEMBLOCK_ALLOC_ACCESSIBLE, + nid); + + if (ptr && size > 0) + page_init_poison(ptr, size); + + return ptr; +} + static int zone_batchsize(struct zone *zone) { #ifdef CONFIG_MMU @@ -7485,7 +7515,7 @@ static void __init free_area_init_core(struct pglist_data *pgdat) } #ifdef CONFIG_FLATMEM -static void __ref alloc_node_mem_map(struct pglist_data *pgdat) +static void __init alloc_node_mem_map(struct pglist_data *pgdat) { unsigned long __maybe_unused start = 0; unsigned long __maybe_unused offset = 0; @@ -7509,8 +7539,8 @@ static void __ref alloc_node_mem_map(struct pglist_data *pgdat) end = pgdat_end_pfn(pgdat); end = ALIGN(end, MAX_ORDER_NR_PAGES); size = (end - start) * sizeof(struct page); - map = memblock_alloc_node(size, SMP_CACHE_BYTES, - pgdat->node_id); + map = memmap_alloc(size, SMP_CACHE_BYTES, MEMBLOCK_LOW_LIMIT, + pgdat->node_id, false); if (!map) panic("Failed to allocate %ld bytes for node %d memory map\n", size, pgdat->node_id); @@ -7531,7 +7561,7 @@ static void __ref alloc_node_mem_map(struct pglist_data *pgdat) #endif } #else -static void __ref alloc_node_mem_map(struct pglist_data *pgdat) { } +static inline void alloc_node_mem_map(struct pglist_data *pgdat) { } #endif /* CONFIG_FLATMEM */ #ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT @@ -8960,7 +8990,7 @@ static int __alloc_contig_migrate_range(struct compact_control *cc, cc->nr_migratepages -= nr_reclaimed; ret = migrate_pages(&cc->migratepages, alloc_migration_target, - NULL, (unsigned long)&mtc, cc->mode, MR_CONTIG_RANGE); + NULL, (unsigned long)&mtc, cc->mode, MR_CONTIG_RANGE, NULL); /* * On -ENOMEM, migrate_pages() bails out right away. It is pointless |