diff options
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 47 |
1 files changed, 28 insertions, 19 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 8ab5e5e7fdad..3c7ea45ffba9 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -182,28 +182,31 @@ static unsigned long __meminitdata nr_all_pages; static unsigned long __meminitdata dma_reserve; #ifdef CONFIG_ARCH_POPULATES_NODE_MAP - /* - * MAX_ACTIVE_REGIONS determines the maximum number of distinct - * ranges of memory (RAM) that may be registered with add_active_range(). - * Ranges passed to add_active_range() will be merged if possible - * so the number of times add_active_range() can be called is - * related to the number of nodes and the number of holes - */ - #ifdef CONFIG_MAX_ACTIVE_REGIONS - /* Allow an architecture to set MAX_ACTIVE_REGIONS to save memory */ - #define MAX_ACTIVE_REGIONS CONFIG_MAX_ACTIVE_REGIONS - #else - #if MAX_NUMNODES >= 32 - /* If there can be many nodes, allow up to 50 holes per node */ - #define MAX_ACTIVE_REGIONS (MAX_NUMNODES*50) + #ifndef CONFIG_HAVE_MEMBLOCK_NODE_MAP + /* + * MAX_ACTIVE_REGIONS determines the maximum number of distinct ranges + * of memory (RAM) that may be registered with add_active_range(). + * Ranges passed to add_active_range() will be merged if possible so + * the number of times add_active_range() can be called is related to + * the number of nodes and the number of holes + */ + #ifdef CONFIG_MAX_ACTIVE_REGIONS + /* Allow an architecture to set MAX_ACTIVE_REGIONS to save memory */ + #define MAX_ACTIVE_REGIONS CONFIG_MAX_ACTIVE_REGIONS #else - /* By default, allow up to 256 distinct regions */ - #define MAX_ACTIVE_REGIONS 256 + #if MAX_NUMNODES >= 32 + /* If there can be many nodes, allow up to 50 holes per node */ + #define MAX_ACTIVE_REGIONS (MAX_NUMNODES*50) + #else + /* By default, allow up to 256 distinct regions */ + #define MAX_ACTIVE_REGIONS 256 + #endif #endif - #endif - static struct node_active_region __meminitdata early_node_map[MAX_ACTIVE_REGIONS]; - static int __meminitdata nr_nodemap_entries; + static struct node_active_region __meminitdata early_node_map[MAX_ACTIVE_REGIONS]; + static int __meminitdata nr_nodemap_entries; +#endif /* !CONFIG_HAVE_MEMBLOCK_NODE_MAP */ + static unsigned long __meminitdata arch_zone_lowest_possible_pfn[MAX_NR_ZONES]; static unsigned long __meminitdata arch_zone_highest_possible_pfn[MAX_NR_ZONES]; static unsigned long __initdata required_kernelcore; @@ -4268,6 +4271,7 @@ static inline void setup_nr_node_ids(void) } #endif +#ifndef CONFIG_HAVE_MEMBLOCK_NODE_MAP /* * Common iterator interface used to define for_each_mem_pfn_range(). */ @@ -4456,6 +4460,11 @@ void __init sort_node_map(void) sizeof(struct node_active_region), cmp_node_active_region, NULL); } +#else /* !CONFIG_HAVE_MEMBLOCK_NODE_MAP */ +static inline void sort_node_map(void) +{ +} +#endif /** * node_map_pfn_alignment - determine the maximum internode alignment |