From d23ad42324cc4378132e51f2fc5c9ba6cbe75182 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Sat, 10 Feb 2007 01:43:02 -0800 Subject: [PATCH] Use ZVC for free_pages This is again simplifies some of the VM counter calculations through the use of the ZVC consolidated counters. [michal.k.k.piotrowski@gmail.com: build fix] Signed-off-by: Christoph Lameter Signed-off-by: Michal Piotrowski Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/vmstat.c | 20 ++++---------------- 1 file changed, 4 insertions(+), 16 deletions(-) (limited to 'mm/vmstat.c') 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, -- cgit v1.2.3