diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/highmem.c | 3 | ||||
| -rw-r--r-- | mm/page_alloc.c | 37 | ||||
| -rw-r--r-- | mm/vmstat.c | 20 |
3 files changed, 19 insertions, 41 deletions
diff --git a/mm/highmem.c b/mm/highmem.c index 0206e7e5018..51e1c1995fe 100644 --- a/mm/highmem.c +++ b/mm/highmem.c @@ -47,7 +47,8 @@ unsigned int nr_free_highpages (void) unsigned int pages = 0; for_each_online_pgdat(pgdat) - pages += pgdat->node_zones[ZONE_HIGHMEM].free_pages; + pages += zone_page_state(&pgdat->node_zones[ZONE_HIGHMEM], + NR_FREE_PAGES); return pages; } diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 07c954e5327..ba62d8789f7 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -395,7 +395,7 @@ static inline void __free_one_page(struct page *page, VM_BUG_ON(page_idx & (order_size - 1)); VM_BUG_ON(bad_range(zone, page)); - zone->free_pages += order_size; + __mod_zone_page_state(zone, NR_FREE_PAGES, order_size); while (order < MAX_ORDER-1) { unsigned long combined_idx; struct free_area *area; @@ -631,7 +631,7 @@ static struct page *__rmqueue(struct zone *zone, unsigned int order) list_del(&page->lru); rmv_page_order(page); area->nr_free--; - zone->free_pages -= 1UL << order; + __mod_zone_page_state(zone, NR_FREE_PAGES, - (1UL << order)); expand(zone, page, order, current_order, area); return page; } @@ -989,7 +989,8 @@ int zone_watermark_ok(struct zone *z, int order, unsigned long mark, int classzone_idx, int alloc_flags) { /* free_pages my go negative - that's OK */ - long min = mark, free_pages = z->free_pages - (1 << order) + 1; + long min = mark; + long free_pages = zone_page_state(z, NR_FREE_PAGES) - (1 << order) + 1; int o; if (alloc_flags & ALLOC_HIGH) @@ -1444,13 +1445,7 @@ EXPORT_SYMBOL(free_pages); */ unsigned int nr_free_pages(void) { - unsigned int sum = 0; - struct zone *zone; - - for_each_zone(zone) - sum += zone->free_pages; - - return sum; + return global_page_state(NR_FREE_PAGES); } EXPORT_SYMBOL(nr_free_pages); @@ -1458,13 +1453,7 @@ EXPORT_SYMBOL(nr_free_pages); #ifdef CONFIG_NUMA unsigned int nr_free_pages_pgdat(pg_data_t *pgdat) { - unsigned int sum = 0; - enum zone_type i; - - for (i = 0; i < MAX_NR_ZONES; i++) - sum += pgdat->node_zones[i].free_pages; - - return sum; + return node_page_state(pgdat->node_id, NR_FREE_PAGES); } #endif @@ -1514,7 +1503,7 @@ void si_meminfo(struct sysinfo *val) { val->totalram = totalram_pages; val->sharedram = 0; - val->freeram = nr_free_pages(); + val->freeram = global_page_state(NR_FREE_PAGES); val->bufferram = nr_blockdev_pages(); val->totalhigh = totalhigh_pages; val->freehigh = nr_free_highpages(); @@ -1529,10 +1518,11 @@ void si_meminfo_node(struct sysinfo *val, int nid) pg_data_t *pgdat = NODE_DATA(nid); val->totalram = pgdat->node_present_pages; - val->freeram = nr_free_pages_pgdat(pgdat); + val->freeram = node_page_state(nid, NR_FREE_PAGES); #ifdef CONFIG_HIGHMEM val->totalhigh = pgdat->node_zones[ZONE_HIGHMEM].present_pages; - val->freehigh = pgdat->node_zones[ZONE_HIGHMEM].free_pages; + val->freehigh = zone_page_state(&pgdat->node_zones[ZONE_HIGHMEM], + NR_FREE_PAGES); #else val->totalhigh = 0; val->freehigh = 0; @@ -1580,13 +1570,13 @@ void show_free_areas(void) get_zone_counts(&active, &inactive, &free); printk("Active:%lu inactive:%lu dirty:%lu writeback:%lu unstable:%lu\n" - " free:%u slab:%lu mapped:%lu pagetables:%lu bounce:%lu\n", + " free:%lu slab:%lu mapped:%lu pagetables:%lu bounce:%lu\n", active, inactive, global_page_state(NR_FILE_DIRTY), global_page_state(NR_WRITEBACK), global_page_state(NR_UNSTABLE_NFS), - nr_free_pages(), + global_page_state(NR_FREE_PAGES), global_page_state(NR_SLAB_RECLAIMABLE) + global_page_state(NR_SLAB_UNRECLAIMABLE), global_page_state(NR_FILE_MAPPED), @@ -1612,7 +1602,7 @@ void show_free_areas(void) " all_unreclaimable? %s" "\n", zone->name, - K(zone->free_pages), + K(zone_page_state(zone, NR_FREE_PAGES)), K(zone->pages_min), K(zone->pages_low), K(zone->pages_high), @@ -2675,7 +2665,6 @@ static void __meminit free_area_init_core(struct pglist_data *pgdat, spin_lock_init(&zone->lru_lock); zone_seqlock_init(zone); zone->zone_pgdat = pgdat; - zone->free_pages = 0; zone->prev_priority = DEF_PRIORITY; diff --git a/mm/vmstat.c b/mm/vmstat.c index 5462106725d..2386716f175 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -16,30 +16,17 @@ void __get_zone_counts(unsigned long *active, unsigned long *inactive, unsigned long *free, struct pglist_data *pgdat) { - struct zone *zones = pgdat->node_zones; - int i; - *active = node_page_state(pgdat->node_id, NR_ACTIVE); *inactive = node_page_state(pgdat->node_id, NR_INACTIVE); - *free = 0; - for (i = 0; i < MAX_NR_ZONES; i++) { - *free += zones[i].free_pages; - } + *free = node_page_state(pgdat->node_id, NR_FREE_PAGES); } void get_zone_counts(unsigned long *active, unsigned long *inactive, unsigned long *free) { - struct pglist_data *pgdat; - *active = global_page_state(NR_ACTIVE); *inactive = global_page_state(NR_INACTIVE); - *free = 0; - for_each_online_pgdat(pgdat) { - unsigned long l, m, n; - __get_zone_counts(&l, &m, &n, pgdat); - *free += n; - } + *free = global_page_state(NR_FREE_PAGES); } #ifdef CONFIG_VM_EVENT_COUNTERS @@ -454,6 +441,7 @@ const struct seq_operations fragmentation_op = { static const char * const vmstat_text[] = { /* Zoned VM counters */ + "nr_free_pages", "nr_active", "nr_inactive", "nr_anon_pages", @@ -534,7 +522,7 @@ static int zoneinfo_show(struct seq_file *m, void *arg) "\n scanned %lu (a: %lu i: %lu)" "\n spanned %lu" "\n present %lu", - zone->free_pages, + zone_page_state(zone, NR_FREE_PAGES), zone->pages_min, zone->pages_low, zone->pages_high, |