From e87d59f7a2002aa2d4582d4ea16da91dd3c72752 Mon Sep 17 00:00:00 2001 From: Joonsoo Kim Date: Thu, 19 May 2016 17:12:29 -0700 Subject: [PATCH] mm/vmstat: make node_page_state() handles all zones by itself node_page_state() manually adds statistics per each zone and returns total value for all zones. Whenever we add a new zone, we need to consider this function and it's really troublesome. Make it handle all zones by itself. Signed-off-by: Joonsoo Kim Reviewed-by: Aneesh Kumar K.V Cc: Rik van Riel Cc: Johannes Weiner Cc: Mel Gorman Cc: Laura Abbott Cc: Minchan Kim Cc: Marek Szyprowski Cc: Michal Nazarewicz Cc: Vlastimil Babka Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/vmstat.c | 18 ++++++------------ 1 file changed, 6 insertions(+), 12 deletions(-) diff --git a/mm/vmstat.c b/mm/vmstat.c index 0a726e398cfd..a7de9adacbd9 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -600,19 +600,13 @@ void zone_statistics(struct zone *preferred_zone, struct zone *z, gfp_t flags) unsigned long node_page_state(int node, enum zone_stat_item item) { struct zone *zones = NODE_DATA(node)->node_zones; + int i; + unsigned long count = 0; - return -#ifdef CONFIG_ZONE_DMA - zone_page_state(&zones[ZONE_DMA], item) + -#endif -#ifdef CONFIG_ZONE_DMA32 - zone_page_state(&zones[ZONE_DMA32], item) + -#endif -#ifdef CONFIG_HIGHMEM - zone_page_state(&zones[ZONE_HIGHMEM], item) + -#endif - zone_page_state(&zones[ZONE_NORMAL], item) + - zone_page_state(&zones[ZONE_MOVABLE], item); + for (i = 0; i < MAX_NR_ZONES; i++) + count += zone_page_state(zones + i, item); + + return count; } #endif -- 2.20.1