[ARM] mm: finish ARM sparsemem support

[linux-2.6-omap-h63xx.git] / arch / arm / mm / init.c

diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 9b7f0bf26f573ed353de0738dc3f6f4358d69121..82c4b4217989b1587a06a7acccd93ba5fc7b0c0e 100644 (file)
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -79,7 +79,7 @@ void show_mem(void)
        show_free_areas();
        for_each_online_node(node) {
                pg_data_t *n = NODE_DATA(node);
-               struct page *map = n->node_mem_map - n->node_start_pfn;
+               struct page *map = pgdat_page_nr(n, 0) - n->node_start_pfn;
 
                for_each_nodebank (i,mi,node) {
                        struct membank *bank = &mi->bank[i];
@@ -207,10 +207,8 @@ static inline void map_memory_bank(struct membank *bank)
 #endif
 }
 
-static unsigned long __init
-bootmem_init_node(int node, int initrd_node, struct meminfo *mi)
+static unsigned long __init bootmem_init_node(int node, struct meminfo *mi)
 {
-       unsigned long zone_size[MAX_NR_ZONES], zhole_size[MAX_NR_ZONES];
        unsigned long start_pfn, end_pfn, boot_pfn;
        unsigned int boot_pages;
        pg_data_t *pgdat;
@@ -260,6 +258,7 @@ bootmem_init_node(int node, int initrd_node, struct meminfo *mi)
        for_each_nodebank(i, mi, node) {
                struct membank *bank = &mi->bank[i];
                free_bootmem_node(pgdat, bank_phys_start(bank), bank_phys_size(bank));
+               memory_present(node, bank_pfn_start(bank), bank_pfn_end(bank));
        }
 
        /*
@@ -268,31 +267,39 @@ bootmem_init_node(int node, int initrd_node, struct meminfo *mi)
        reserve_bootmem_node(pgdat, boot_pfn << PAGE_SHIFT,
                             boot_pages << PAGE_SHIFT, BOOTMEM_DEFAULT);
 
-       /*
-        * Reserve any special node zero regions.
-        */
-       if (node == 0)
-               reserve_node_zero(pgdat);
+       return end_pfn;
+}
 
+static void __init bootmem_reserve_initrd(int node)
+{
 #ifdef CONFIG_BLK_DEV_INITRD
-       /*
-        * If the initrd is in this node, reserve its memory.
-        */
-       if (node == initrd_node) {
-               int res = reserve_bootmem_node(pgdat, phys_initrd_start,
-                                    phys_initrd_size, BOOTMEM_EXCLUSIVE);
-
-               if (res == 0) {
-                       initrd_start = __phys_to_virt(phys_initrd_start);
-                       initrd_end = initrd_start + phys_initrd_size;
-               } else {
-                       printk(KERN_ERR
-                               "INITRD: 0x%08lx+0x%08lx overlaps in-use "
-                               "memory region - disabling initrd\n",
-                               phys_initrd_start, phys_initrd_size);
-               }
+       pg_data_t *pgdat = NODE_DATA(node);
+       int res;
+
+       res = reserve_bootmem_node(pgdat, phys_initrd_start,
+                            phys_initrd_size, BOOTMEM_EXCLUSIVE);
+
+       if (res == 0) {
+               initrd_start = __phys_to_virt(phys_initrd_start);
+               initrd_end = initrd_start + phys_initrd_size;
+       } else {
+               printk(KERN_ERR
+                       "INITRD: 0x%08lx+0x%08lx overlaps in-use "
+                       "memory region - disabling initrd\n",
+                       phys_initrd_start, phys_initrd_size);
        }
 #endif
+}
+
+static void __init bootmem_free_node(int node, struct meminfo *mi)
+{
+       unsigned long zone_size[MAX_NR_ZONES], zhole_size[MAX_NR_ZONES];
+       unsigned long start_pfn, end_pfn;
+       pg_data_t *pgdat = NODE_DATA(node);
+       int i;
+
+       start_pfn = pgdat->bdata->node_min_pfn;
+       end_pfn = pgdat->bdata->node_low_pfn;
 
        /*
         * initialise the zones within this node.
@@ -322,8 +329,6 @@ bootmem_init_node(int node, int initrd_node, struct meminfo *mi)
        arch_adjust_zones(node, zone_size, zhole_size);
 
        free_area_init_node(node, zone_size, start_pfn, zhole_size);
-
-       return end_pfn;
 }
 
 void __init bootmem_init(struct meminfo *mi)
@@ -342,9 +347,19 @@ void __init bootmem_init(struct meminfo *mi)
         * Run through each node initialising the bootmem allocator.
         */
        for_each_node(node) {
-               unsigned long end_pfn;
+               unsigned long end_pfn = bootmem_init_node(node, mi);
 
-               end_pfn = bootmem_init_node(node, initrd_node, mi);
+               /*
+                * Reserve any special node zero regions.
+                */
+               if (node == 0)
+                       reserve_node_zero(NODE_DATA(node));
+
+               /*
+                * If the initrd is in this node, reserve its memory.
+                */
+               if (node == initrd_node)
+                       bootmem_reserve_initrd(node);
 
                /*
                 * Remember the highest memory PFN.
@@ -353,6 +368,19 @@ void __init bootmem_init(struct meminfo *mi)
                        memend_pfn = end_pfn;
        }
 
+       /*
+        * sparse_init() needs the bootmem allocator up and running.
+        */
+       sparse_init();
+
+       /*
+        * Now free memory in each node - free_area_init_node needs
+        * the sparse mem_map arrays initialized by sparse_init()
+        * for memmap_init_zone(), otherwise all PFNs are invalid.
+        */
+       for_each_node(node)
+               bootmem_free_node(node, mi);
+
        high_memory = __va(memend_pfn << PAGE_SHIFT);
 
        /*