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authorAndrew Morton <akpm@linux-foundation.org>2015-11-05 18:48:43 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-11-05 19:34:48 -0800
commitc2d42c16ad83006a706d83e51a7268db04af733a (patch)
tree40ae08b6de5e852052ba16cc46e481efa53f0d1a /include
parent27f28b972e12a4080e5f5e4eb36b8224705652d4 (diff)
downloadlinux-stericsson-c2d42c16ad83006a706d83e51a7268db04af733a.tar.gz
mm/vmstat.c: uninline node_page_state()
With x86_64 (config http://ozlabs.org/~akpm/config-akpm2.txt) and old gcc (4.4.4), drivers/base/node.c:node_read_meminfo() is using 2344 bytes of stack. Uninlining node_page_state() reduces this to 440 bytes. The stack consumption issue is fixed by newer gcc (4.8.4) however with that compiler this patch reduces the node.o text size from 7314 bytes to 4578. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/vmstat.h24
1 files changed, 1 insertions, 23 deletions
diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h
index 82e7db7f7100..49dfe40b3673 100644
--- a/include/linux/vmstat.h
+++ b/include/linux/vmstat.h
@@ -161,30 +161,8 @@ static inline unsigned long zone_page_state_snapshot(struct zone *zone,
}
#ifdef CONFIG_NUMA
-/*
- * Determine the per node value of a stat item. This function
- * is called frequently in a NUMA machine, so try to be as
- * frugal as possible.
- */
-static inline unsigned long node_page_state(int node,
- enum zone_stat_item item)
-{
- struct zone *zones = NODE_DATA(node)->node_zones;
-
- 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);
-}
+extern unsigned long node_page_state(int node, enum zone_stat_item item);
extern void zone_statistics(struct zone *, struct zone *, gfp_t gfp);
#else