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 <iamjoonsoo.kim@lge.com> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: Rik van Riel <riel@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Laura Abbott <lauraa@codeaurora.org> Cc: Minchan Kim <minchan@kernel.org> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Michal Nazarewicz <mina86@mina86.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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mm/vmstat.c
18
mm/vmstat.c
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@ -600,19 +600,13 @@ void zone_statistics(struct zone *preferred_zone, struct zone *z, gfp_t flags)
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unsigned long node_page_state(int node, enum zone_stat_item item)
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unsigned long node_page_state(int node, enum zone_stat_item item)
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{
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{
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struct zone *zones = NODE_DATA(node)->node_zones;
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struct zone *zones = NODE_DATA(node)->node_zones;
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int i;
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unsigned long count = 0;
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return
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for (i = 0; i < MAX_NR_ZONES; i++)
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#ifdef CONFIG_ZONE_DMA
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count += zone_page_state(zones + i, item);
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zone_page_state(&zones[ZONE_DMA], item) +
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#endif
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return count;
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#ifdef CONFIG_ZONE_DMA32
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zone_page_state(&zones[ZONE_DMA32], item) +
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#endif
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#ifdef CONFIG_HIGHMEM
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zone_page_state(&zones[ZONE_HIGHMEM], item) +
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#endif
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zone_page_state(&zones[ZONE_NORMAL], item) +
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zone_page_state(&zones[ZONE_MOVABLE], item);
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}
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}
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#endif
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#endif
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