Pull acpi_bus_register_driver into release branch

[pandora-kernel.git] / arch / x86_64 / mm / numa.c

diff --git a/arch/x86_64/mm/numa.c b/arch/x86_64/mm/numa.c
index 63c7264..b2fac14 100644 (file)
--- a/arch/x86_64/mm/numa.c
+++ b/arch/x86_64/mm/numa.c
@@ -100,11 +100,30 @@ int early_pfn_to_nid(unsigned long pfn)
 }
 #endif
 
+static void * __init
+early_node_mem(int nodeid, unsigned long start, unsigned long end,
+             unsigned long size)
+{
+       unsigned long mem = find_e820_area(start, end, size);
+       void *ptr;
+       if (mem != -1L)
+               return __va(mem);
+       ptr = __alloc_bootmem_nopanic(size,
+                               SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS));
+       if (ptr == 0) {
+               printk(KERN_ERR "Cannot find %lu bytes in node %d\n",
+                       size, nodeid);
+               return NULL;
+       }
+       return ptr;
+}
+
 /* Initialize bootmem allocator for a node */
 void __init setup_node_bootmem(int nodeid, unsigned long start, unsigned long end)
 { 
        unsigned long start_pfn, end_pfn, bootmap_pages, bootmap_size, bootmap_start; 
        unsigned long nodedata_phys;
+       void *bootmap;
        const int pgdat_size = round_up(sizeof(pg_data_t), PAGE_SIZE);
 
        start = round_up(start, ZONE_ALIGN); 
@@ -114,13 +133,11 @@ void __init setup_node_bootmem(int nodeid, unsigned long start, unsigned long en
        start_pfn = start >> PAGE_SHIFT;
        end_pfn = end >> PAGE_SHIFT;
 
-       nodedata_phys = find_e820_area(start, end, pgdat_size); 
-       if (nodedata_phys == -1L) 
-               panic("Cannot find memory pgdat in node %d\n", nodeid);
-
-       Dprintk("nodedata_phys %lx\n", nodedata_phys); 
+       node_data[nodeid] = early_node_mem(nodeid, start, end, pgdat_size);
+       if (node_data[nodeid] == NULL)
+               return;
+       nodedata_phys = __pa(node_data[nodeid]);
 
-       node_data[nodeid] = phys_to_virt(nodedata_phys);
        memset(NODE_DATA(nodeid), 0, sizeof(pg_data_t));
        NODE_DATA(nodeid)->bdata = &plat_node_bdata[nodeid];
        NODE_DATA(nodeid)->node_start_pfn = start_pfn;
@@ -129,9 +146,15 @@ void __init setup_node_bootmem(int nodeid, unsigned long start, unsigned long en
        /* Find a place for the bootmem map */
        bootmap_pages = bootmem_bootmap_pages(end_pfn - start_pfn); 
        bootmap_start = round_up(nodedata_phys + pgdat_size, PAGE_SIZE);
-       bootmap_start = find_e820_area(bootmap_start, end, bootmap_pages<<PAGE_SHIFT);
-       if (bootmap_start == -1L) 
-               panic("Not enough continuous space for bootmap on node %d", nodeid); 
+       bootmap = early_node_mem(nodeid, bootmap_start, end,
+                                       bootmap_pages<<PAGE_SHIFT);
+       if (bootmap == NULL)  {
+               if (nodedata_phys < start || nodedata_phys >= end)
+                       free_bootmem((unsigned long)node_data[nodeid],pgdat_size);
+               node_data[nodeid] = NULL;
+               return;
+       }
+       bootmap_start = __pa(bootmap);
        Dprintk("bootmap start %lu pages %lu\n", bootmap_start, bootmap_pages); 
        
        bootmap_size = init_bootmem_node(NODE_DATA(nodeid),
@@ -142,6 +165,9 @@ void __init setup_node_bootmem(int nodeid, unsigned long start, unsigned long en
 
        reserve_bootmem_node(NODE_DATA(nodeid), nodedata_phys, pgdat_size); 
        reserve_bootmem_node(NODE_DATA(nodeid), bootmap_start, bootmap_pages<<PAGE_SHIFT);
+#ifdef CONFIG_ACPI_NUMA
+       srat_reserve_add_area(nodeid);
+#endif
        node_set_online(nodeid);
 } 
 
@@ -162,11 +188,13 @@ void __init setup_node_zones(int nodeid)
           memory. */
        memmapsize = sizeof(struct page) * (end_pfn-start_pfn);
        limit = end_pfn << PAGE_SHIFT;
+#ifdef CONFIG_FLAT_NODE_MEM_MAP
        NODE_DATA(nodeid)->node_mem_map = 
                __alloc_bootmem_core(NODE_DATA(nodeid)->bdata, 
                                memmapsize, SMP_CACHE_BYTES, 
                                round_down(limit - memmapsize, PAGE_SIZE), 
                                limit);
+#endif
 
        size_zones(zones, holes, start_pfn, end_pfn);
        free_area_init_node(nodeid, NODE_DATA(nodeid), zones,
@@ -335,6 +363,8 @@ __init int numa_setup(char *opt)
 #ifdef CONFIG_ACPI_NUMA
        if (!strncmp(opt,"noacpi",6))
                acpi_numa = -1;
+       if (!strncmp(opt,"hotadd=", 7))
+               hotadd_percent = simple_strtoul(opt+7, NULL, 10);
 #endif
        return 1;
 } 
@@ -377,21 +407,6 @@ 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;