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[PATCH] Add node to zone for the NUMA case

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Add the node in order to optimize zone_to_nid.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Acked-by: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Christoph Lameter 2006-09-27 01:50:08 -07:00 committed by Linus Torvalds
parent 765c4507af
commit d5f541ed6e
3 changed files with 7 additions and 1 deletions
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6
include/linux/mm.h
View File

@ -446,7 +446,11 @@ static inline struct zone *page_zone(struct page *page)
static inline unsigned long zone_to_nid(struct zone *zone)
{
return zone->zone_pgdat->node_id;
#ifdef CONFIG_NUMA
return zone->node;
#else
return 0;
#endif
}
static inline unsigned long page_to_nid(struct page *page)

1
include/linux/mmzone.h
View File

@ -168,6 +168,7 @@ struct zone {
unsigned long lowmem_reserve[MAX_NR_ZONES];
#ifdef CONFIG_NUMA
int node;
/*
* zone reclaim becomes active if more unmapped pages exist.
*/

1
mm/page_alloc.c
View File

@ -2405,6 +2405,7 @@ static void __meminit free_area_init_core(struct pglist_data *pgdat,
zone->spanned_pages = size;
zone->present_pages = realsize;
#ifdef CONFIG_NUMA
zone->node = nid;
zone->min_unmapped_pages = (realsize*sysctl_min_unmapped_ratio)
/ 100;
zone->min_slab_pages = (realsize * sysctl_min_slab_ratio) / 100;