diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/page_alloc.c | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index d461b23..f66538b 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -664,6 +664,26 @@ static int rmqueue_bulk(struct zone *zone, unsigned int order, return i; } +#if MAX_NUMNODES > 1 +int nr_node_ids __read_mostly; +EXPORT_SYMBOL(nr_node_ids); + +/* + * Figure out the number of possible node ids. + */ +static void __init setup_nr_node_ids(void) +{ + unsigned int node; + unsigned int highest = 0; + + for_each_node_mask(node, node_possible_map) + highest = node; + nr_node_ids = highest + 1; +} +#else +static void __init setup_nr_node_ids(void) {} +#endif + #ifdef CONFIG_NUMA /* * Called from the slab reaper to drain pagesets on a particular node that @@ -3169,6 +3189,7 @@ static int __init init_per_zone_pages_min(void) min_free_kbytes = 65536; setup_per_zone_pages_min(); setup_per_zone_lowmem_reserve(); + setup_nr_node_ids(); return 0; } module_init(init_per_zone_pages_min) @@ -3370,18 +3391,4 @@ EXPORT_SYMBOL(pfn_to_page); EXPORT_SYMBOL(page_to_pfn); #endif /* CONFIG_OUT_OF_LINE_PFN_TO_PAGE */ -#if MAX_NUMNODES > 1 -/* - * Find the highest possible node id. - */ -int highest_possible_node_id(void) -{ - unsigned int node; - unsigned int highest = 0; - for_each_node_mask(node, node_possible_map) - highest = node; - return highest; -} -EXPORT_SYMBOL(highest_possible_node_id); -#endif |