1 files changed, 40 insertions, 17 deletions

diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c
index b6bcc9fa3603..525b082eb661 100644
--- a/arch/ia64/mm/discontig.c
+++ b/arch/ia64/mm/discontig.c
@@ -33,7 +33,6 @@
  */
 struct early_node_data {
         struct ia64_node_data *node_data;
-        pg_data_t *pgdat;
         unsigned long pernode_addr;
         unsigned long pernode_size;
         struct bootmem_data bootmem_data;
@@ -46,6 +45,8 @@ struct early_node_data {
 static struct early_node_data mem_data[MAX_NUMNODES] __initdata;
 static nodemask_t memory_less_mask __initdata;
 
+static pg_data_t *pgdat_list[MAX_NUMNODES];
+
 /*
  * To prevent cache aliasing effects, align per-node structures so that they
  * start at addresses that are strided by node number.
@@ -99,7 +100,7 @@ static int __init build_node_maps(unsigned long start, unsigned long len,
  * acpi_boot_init() (which builds the node_to_cpu_mask array) hasn't been
  * called yet.  Note that node 0 will also count all non-existent cpus.
  */
-static int __init early_nr_cpus_node(int node)
+static int __meminit early_nr_cpus_node(int node)
 {
         int cpu, n = 0;
 
@@ -114,7 +115,7 @@ static int __init early_nr_cpus_node(int node)
  * compute_pernodesize - compute size of pernode data
  * @node: the node id.
  */
-static unsigned long __init compute_pernodesize(int node)
+static unsigned long __meminit compute_pernodesize(int node)
 {
         unsigned long pernodesize = 0, cpus;
 
@@ -175,13 +176,13 @@ static void __init fill_pernode(int node, unsigned long pernode,
         pernode += PERCPU_PAGE_SIZE * cpus;
         pernode += node * L1_CACHE_BYTES;
 
-        mem_data[node].pgdat = __va(pernode);
+        pgdat_list[node] = __va(pernode);
         pernode += L1_CACHE_ALIGN(sizeof(pg_data_t));
 
         mem_data[node].node_data = __va(pernode);
         pernode += L1_CACHE_ALIGN(sizeof(struct ia64_node_data));
 
-        mem_data[node].pgdat->bdata = bdp;
+        pgdat_list[node]->bdata = bdp;
         pernode += L1_CACHE_ALIGN(sizeof(pg_data_t));
 
         cpu_data = per_cpu_node_setup(cpu_data, node);
@@ -268,7 +269,7 @@ static int __init find_pernode_space(unsigned long start, unsigned long len,
 static int __init free_node_bootmem(unsigned long start, unsigned long len,
                                     int node)
 {
-        free_bootmem_node(mem_data[node].pgdat, start, len);
+        free_bootmem_node(pgdat_list[node], start, len);
 
         return 0;
 }
@@ -287,7 +288,7 @@ static void __init reserve_pernode_space(void)
         int node;
 
         for_each_online_node(node) {
-                pg_data_t *pdp = mem_data[node].pgdat;
+                pg_data_t *pdp = pgdat_list[node];
 
                 if (node_isset(node, memory_less_mask))
                         continue;
@@ -307,6 +308,17 @@ static void __init reserve_pernode_space(void)
         }
 }
 
+static void __meminit scatter_node_data(void)
+{
+        pg_data_t **dst;
+        int node;
+
+        for_each_online_node(node) {
+                dst = LOCAL_DATA_ADDR(pgdat_list[node])->pg_data_ptrs;
+                memcpy(dst, pgdat_list, sizeof(pgdat_list));
+        }
+}
+
 /**
  * initialize_pernode_data - fixup per-cpu & per-node pointers
  *
@@ -317,17 +329,10 @@ static void __init reserve_pernode_space(void)
  */
 static void __init initialize_pernode_data(void)
 {
-        pg_data_t *pgdat_list[MAX_NUMNODES];
         int cpu, node;
 
-        for_each_online_node(node)
-                pgdat_list[node] = mem_data[node].pgdat;
+        scatter_node_data();
 
-        /* Copy the pg_data_t list to each node and init the node field */
-        for_each_online_node(node) {
-                memcpy(mem_data[node].node_data->pg_data_ptrs, pgdat_list,
-                       sizeof(pgdat_list));
-        }
 #ifdef CONFIG_SMP
         /* Set the node_data pointer for each per-cpu struct */
         for (cpu = 0; cpu < NR_CPUS; cpu++) {
@@ -372,7 +377,7 @@ static void __init *memory_less_node_alloc(int nid, unsigned long pernodesize)
         if (bestnode == -1)
                 bestnode = anynode;
 
-        ptr = __alloc_bootmem_node(mem_data[bestnode].pgdat, pernodesize,
+        ptr = __alloc_bootmem_node(pgdat_list[bestnode], pernodesize,
                 PERCPU_PAGE_SIZE, __pa(MAX_DMA_ADDRESS));
 
         return ptr;
@@ -476,7 +481,7 @@ void __init find_memory(void)
                 pernodesize = mem_data[node].pernode_size;
                 map = pernode + pernodesize;
 
-                init_bootmem_node(mem_data[node].pgdat,
+                init_bootmem_node(pgdat_list[node],
                                   map>>PAGE_SHIFT,
                                   bdp->node_boot_start>>PAGE_SHIFT,
                                   bdp->node_low_pfn);
@@ -786,3 +791,21 @@ void __init paging_init(void)
 
         zero_page_memmap_ptr = virt_to_page(ia64_imva(empty_zero_page));
 }
+
+pg_data_t *arch_alloc_nodedata(int nid)
+{
+        unsigned long size = compute_pernodesize(nid);
+
+        return kzalloc(size, GFP_KERNEL);
+}
+
+void arch_free_nodedata(pg_data_t *pgdat)
+{
+        kfree(pgdat);
+}
+
+void arch_refresh_nodedata(int update_node, pg_data_t *update_pgdat)
+{
+        pgdat_list[update_node] = update_pgdat;
+        scatter_node_data();
+}