vserver 2.0 rc7

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

diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 060fea2..72a2b8c 100644 (file)
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -14,6 +14,8 @@
 #include <linux/swap.h>
 #include <linux/init.h>
 #include <linux/bootmem.h>
+#include <linux/mman.h>
+#include <linux/nodemask.h>
 #include <linux/initrd.h>
 
 #include <asm/mach-types.h>
@@ -29,7 +31,7 @@
 DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
 
 extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
-extern char _stext, _text, _etext, _end, __init_begin, __init_end;
+extern void _stext, _text, _etext, __data_start, _end, __init_begin, __init_end;
 extern unsigned long phys_initrd_start;
 extern unsigned long phys_initrd_size;
 
@@ -54,7 +56,7 @@ void show_mem(void)
        show_free_areas();
        printk("Free swap:       %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
 
-       for (node = 0; node < numnodes; node++) {
+       for_each_online_node(node) {
                struct page *page, *end;
 
                page = NODE_MEM_MAP(node);
@@ -177,18 +179,14 @@ find_memend_and_nodes(struct meminfo *mi, struct node_info *np)
 
                node = mi->bank[i].node;
 
-               if (node >= numnodes) {
-                       numnodes = node + 1;
-
-                       /*
-                        * Make sure we haven't exceeded the maximum number
-                        * of nodes that we have in this configuration.  If
-                        * we have, we're in trouble.  (maybe we ought to
-                        * limit, instead of bugging?)
-                        */
-                       if (numnodes > MAX_NUMNODES)
-                               BUG();
-               }
+               /*
+                * Make sure we haven't exceeded the maximum number of nodes
+                * that we have in this configuration.  If we have, we're in
+                * trouble.  (maybe we ought to limit, instead of bugging?)
+                */
+               if (node >= MAX_NUMNODES)
+                       BUG();
+               node_set_online(node);
 
                /*
                 * Get the start and end pfns for this bank
@@ -210,7 +208,7 @@ find_memend_and_nodes(struct meminfo *mi, struct node_info *np)
         * Calculate the number of pages we require to
         * store the bootmem bitmaps.
         */
-       for (i = 0; i < numnodes; i++) {
+       for_each_online_node(i) {
                if (np[i].end == 0)
                        continue;
 
@@ -225,6 +223,9 @@ find_memend_and_nodes(struct meminfo *mi, struct node_info *np)
         * This doesn't seem to be used by the Linux memory
         * manager any more.  If we can get rid of it, we
         * also get rid of some of the stuff above as well.
+        *
+        * Note: max_low_pfn and max_pfn reflect the number
+        * of _pages_ in the system, not the maximum PFN.
         */
        max_low_pfn = memend_pfn - O_PFN_DOWN(PHYS_OFFSET);
        max_pfn = memend_pfn - O_PFN_DOWN(PHYS_OFFSET);
@@ -281,7 +282,11 @@ static __init void reserve_node_zero(unsigned int bootmap_pfn, unsigned int boot
         * Register the kernel text and data with bootmem.
         * Note that this can only be in node 0.
         */
+#ifdef CONFIG_XIP_KERNEL
+       reserve_bootmem_node(pgdat, __pa(&__data_start), &_end - &__data_start);
+#else
        reserve_bootmem_node(pgdat, __pa(&_stext), &_end - &_stext);
+#endif
 
        /*
         * Reserve the page tables.  These are already in use,
@@ -344,7 +349,7 @@ static inline void free_bootmem_node_bank(int node, struct meminfo *mi)
  * Initialise the bootmem allocator for all nodes.  This is called
  * early during the architecture specific initialisation.
  */
-void __init bootmem_init(struct meminfo *mi)
+static void __init bootmem_init(struct meminfo *mi)
 {
        struct node_info node_info[MAX_NUMNODES], *np = node_info;
        unsigned int bootmap_pages, bootmap_pfn, map_pg;
@@ -375,13 +380,13 @@ void __init bootmem_init(struct meminfo *mi)
         * (we could also do with rolling bootmem_init and paging_init
         * into one generic "memory_init" type function).
         */
-       np += numnodes - 1;
-       for (node = numnodes - 1; node >= 0; node--, np--) {
+       np += num_online_nodes() - 1;
+       for (node = num_online_nodes() - 1; node >= 0; node--, np--) {
                /*
                 * If there are no pages in this node, ignore it.
                 * Note that node 0 must always have some pages.
                 */
-               if (np->end == 0) {
+               if (np->end == 0 || !node_online(node)) {
                        if (node == 0)
                                BUG();
                        continue;
@@ -412,9 +417,7 @@ void __init bootmem_init(struct meminfo *mi)
        }
 #endif
 
-       if (map_pg != bootmap_pfn + bootmap_pages)
-               BUG();
-
+       BUG_ON(map_pg != bootmap_pfn + bootmap_pages);
 }
 
 /*
@@ -426,6 +429,8 @@ void __init paging_init(struct meminfo *mi, struct machine_desc *mdesc)
        void *zero_page;
        int node;
 
+       bootmem_init(mi);
+
        memcpy(&meminfo, mi, sizeof(meminfo));
 
        /*
@@ -444,7 +449,7 @@ void __init paging_init(struct meminfo *mi, struct machine_desc *mdesc)
        /*
         * initialise the zones within each node
         */
-       for (node = 0; node < numnodes; node++) {
+       for_each_online_node(node) {
                unsigned long zone_size[MAX_NR_ZONES];
                unsigned long zhole_size[MAX_NR_ZONES];
                struct bootmem_data *bdata;
@@ -495,14 +500,10 @@ void __init paging_init(struct meminfo *mi, struct machine_desc *mdesc)
                 */
                arch_adjust_zones(node, zone_size, zhole_size);
 
-               free_area_init_node(node, pgdat, NULL, zone_size,
+               free_area_init_node(node, pgdat, zone_size,
                                bdata->node_boot_start >> PAGE_SHIFT, zhole_size);
        }
 
-#ifndef CONFIG_DISCONTIGMEM
-       mem_map = contig_page_data.node_mem_map;
-#endif
-
        /*
         * finish off the bad pages once
         * the mem_map is initialised
@@ -539,7 +540,7 @@ void __init mem_init(void)
        int i, node;
 
        codepages = &_etext - &_text;
-       datapages = &_end - &_etext;
+       datapages = &_end - &__data_start;
        initpages = &__init_end - &__init_begin;
 
 #ifndef CONFIG_DISCONTIGMEM
@@ -553,7 +554,7 @@ void __init mem_init(void)
                create_memmap_holes(&meminfo);
 
        /* this will put all unused low memory onto the freelists */
-       for (node = 0; node < numnodes; node++) {
+       for_each_online_node(node) {
                pg_data_t *pgdat = NODE_DATA(node);
 
                if (pgdat->node_spanned_pages != 0)
@@ -590,7 +591,7 @@ void __init mem_init(void)
                 * anywhere without overcommit, so turn
                 * it on by default.
                 */
-               sysctl_overcommit_memory = 1;
+               sysctl_overcommit_memory = OVERCOMMIT_ALWAYS;
        }
 }