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Diffstat (limited to 'arch/x86_64/mm/numa.c')
-rw-r--r--arch/x86_64/mm/numa.c39
1 files changed, 16 insertions, 23 deletions
diff --git a/arch/x86_64/mm/numa.c b/arch/x86_64/mm/numa.c
index 22e51beee8d..4be82d6e2b4 100644
--- a/arch/x86_64/mm/numa.c
+++ b/arch/x86_64/mm/numa.c
@@ -25,8 +25,7 @@
struct pglist_data *node_data[MAX_NUMNODES] __read_mostly;
bootmem_data_t plat_node_bdata[MAX_NUMNODES];
-int memnode_shift;
-u8 memnodemap[NODEMAPSIZE];
+struct memnode memnode;
unsigned char cpu_to_node[NR_CPUS] __read_mostly = {
[0 ... NR_CPUS-1] = NUMA_NO_NODE
@@ -47,7 +46,7 @@ int numa_off __initdata;
* -1 if node overlap or lost ram (shift too big)
*/
static int __init
-populate_memnodemap(const struct node *nodes, int numnodes, int shift)
+populate_memnodemap(const struct bootnode *nodes, int numnodes, int shift)
{
int i;
int res = -1;
@@ -74,7 +73,7 @@ populate_memnodemap(const struct node *nodes, int numnodes, int shift)
return res;
}
-int __init compute_hash_shift(struct node *nodes, int numnodes)
+int __init compute_hash_shift(struct bootnode *nodes, int numnodes)
{
int shift = 20;
@@ -149,7 +148,7 @@ void __init setup_node_bootmem(int nodeid, unsigned long start, unsigned long en
/* Initialize final allocator for a zone */
void __init setup_node_zones(int nodeid)
{
- unsigned long start_pfn, end_pfn;
+ unsigned long start_pfn, end_pfn, memmapsize, limit;
unsigned long zones[MAX_NR_ZONES];
unsigned long holes[MAX_NR_ZONES];
@@ -159,6 +158,16 @@ void __init setup_node_zones(int nodeid)
Dprintk(KERN_INFO "Setting up node %d %lx-%lx\n",
nodeid, start_pfn, end_pfn);
+ /* Try to allocate mem_map at end to not fill up precious <4GB
+ memory. */
+ memmapsize = sizeof(struct page) * (end_pfn-start_pfn);
+ limit = end_pfn << PAGE_SHIFT;
+ NODE_DATA(nodeid)->node_mem_map =
+ __alloc_bootmem_core(NODE_DATA(nodeid)->bdata,
+ memmapsize, SMP_CACHE_BYTES,
+ round_down(limit - memmapsize, PAGE_SIZE),
+ limit);
+
size_zones(zones, holes, start_pfn, end_pfn);
free_area_init_node(nodeid, NODE_DATA(nodeid), zones,
start_pfn, holes);
@@ -191,7 +200,7 @@ int numa_fake __initdata = 0;
static int numa_emulation(unsigned long start_pfn, unsigned long end_pfn)
{
int i;
- struct node nodes[MAX_NUMNODES];
+ struct bootnode nodes[MAX_NUMNODES];
unsigned long sz = ((end_pfn - start_pfn)<<PAGE_SHIFT) / numa_fake;
/* Kludge needed for the hash function */
@@ -357,8 +366,7 @@ void __init init_cpu_to_node(void)
EXPORT_SYMBOL(cpu_to_node);
EXPORT_SYMBOL(node_to_cpumask);
-EXPORT_SYMBOL(memnode_shift);
-EXPORT_SYMBOL(memnodemap);
+EXPORT_SYMBOL(memnode);
EXPORT_SYMBOL(node_data);
#ifdef CONFIG_DISCONTIGMEM
@@ -369,21 +377,6 @@ EXPORT_SYMBOL(node_data);
* Should do that.
*/
-/* Requires pfn_valid(pfn) to be true */
-struct page *pfn_to_page(unsigned long pfn)
-{
- int nid = phys_to_nid(((unsigned long)(pfn)) << PAGE_SHIFT);
- return (pfn - node_start_pfn(nid)) + NODE_DATA(nid)->node_mem_map;
-}
-EXPORT_SYMBOL(pfn_to_page);
-
-unsigned long page_to_pfn(struct page *page)
-{
- return (long)(((page) - page_zone(page)->zone_mem_map) +
- page_zone(page)->zone_start_pfn);
-}
-EXPORT_SYMBOL(page_to_pfn);
-
int pfn_valid(unsigned long pfn)
{
unsigned nid;