Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * Generic VM initialization for x86-64 NUMA setups. |
| 3 | * Copyright 2002,2003 Andi Kleen, SuSE Labs. |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 4 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | #include <linux/kernel.h> |
| 6 | #include <linux/mm.h> |
| 7 | #include <linux/string.h> |
| 8 | #include <linux/init.h> |
| 9 | #include <linux/bootmem.h> |
| 10 | #include <linux/mmzone.h> |
| 11 | #include <linux/ctype.h> |
| 12 | #include <linux/module.h> |
| 13 | #include <linux/nodemask.h> |
travis@sgi.com | 3cc87e3 | 2008-01-30 13:33:11 +0100 | [diff] [blame] | 14 | #include <linux/sched.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | |
| 16 | #include <asm/e820.h> |
| 17 | #include <asm/proto.h> |
| 18 | #include <asm/dma.h> |
| 19 | #include <asm/numa.h> |
| 20 | #include <asm/acpi.h> |
Thomas Gleixner | c9ff034 | 2008-01-30 13:30:16 +0100 | [diff] [blame] | 21 | #include <asm/k8.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | |
| 23 | #ifndef Dprintk |
| 24 | #define Dprintk(x...) |
| 25 | #endif |
| 26 | |
Ravikiran G Thirumalai | 6c231b7 | 2005-09-06 15:17:45 -0700 | [diff] [blame] | 27 | struct pglist_data *node_data[MAX_NUMNODES] __read_mostly; |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 28 | EXPORT_SYMBOL(node_data); |
| 29 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | bootmem_data_t plat_node_bdata[MAX_NUMNODES]; |
| 31 | |
Eric Dumazet | dcf36bf | 2006-03-25 16:31:46 +0100 | [diff] [blame] | 32 | struct memnode memnode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | |
Mike Travis | b447a46 | 2008-03-25 15:06:51 -0700 | [diff] [blame] | 34 | #ifdef CONFIG_SMP |
travis@sgi.com | 4323838 | 2008-01-30 13:33:25 +0100 | [diff] [blame] | 35 | int x86_cpu_to_node_map_init[NR_CPUS] = { |
Andi Kleen | 3f098c2 | 2005-09-12 18:49:24 +0200 | [diff] [blame] | 36 | [0 ... NR_CPUS-1] = NUMA_NO_NODE |
Andi Kleen | 0b07e98 | 2005-09-12 18:49:24 +0200 | [diff] [blame] | 37 | }; |
travis@sgi.com | df3825c | 2008-01-30 13:33:11 +0100 | [diff] [blame] | 38 | void *x86_cpu_to_node_map_early_ptr; |
Mike Travis | b447a46 | 2008-03-25 15:06:51 -0700 | [diff] [blame] | 39 | EXPORT_SYMBOL(x86_cpu_to_node_map_early_ptr); |
| 40 | #endif |
travis@sgi.com | 4323838 | 2008-01-30 13:33:25 +0100 | [diff] [blame] | 41 | DEFINE_PER_CPU(int, x86_cpu_to_node_map) = NUMA_NO_NODE; |
travis@sgi.com | df3825c | 2008-01-30 13:33:11 +0100 | [diff] [blame] | 42 | EXPORT_PER_CPU_SYMBOL(x86_cpu_to_node_map); |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 43 | |
travis@sgi.com | 4323838 | 2008-01-30 13:33:25 +0100 | [diff] [blame] | 44 | s16 apicid_to_node[MAX_LOCAL_APIC] __cpuinitdata = { |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 45 | [0 ... MAX_LOCAL_APIC-1] = NUMA_NO_NODE |
Andi Kleen | 3f098c2 | 2005-09-12 18:49:24 +0200 | [diff] [blame] | 46 | }; |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 47 | |
Thomas Gleixner | 7462894 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 48 | cpumask_t node_to_cpumask_map[MAX_NUMNODES] __read_mostly; |
| 49 | EXPORT_SYMBOL(node_to_cpumask_map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
| 51 | int numa_off __initdata; |
Amul Shah | 076422d2 | 2007-02-13 13:26:19 +0100 | [diff] [blame] | 52 | unsigned long __initdata nodemap_addr; |
| 53 | unsigned long __initdata nodemap_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | |
Eric Dumazet | 529a340 | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 55 | /* |
| 56 | * Given a shift value, try to populate memnodemap[] |
| 57 | * Returns : |
| 58 | * 1 if OK |
| 59 | * 0 if memnodmap[] too small (of shift too small) |
| 60 | * -1 if node overlap or lost ram (shift too big) |
| 61 | */ |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 62 | static int __init populate_memnodemap(const struct bootnode *nodes, |
Suresh Siddha | 6ec6e0d | 2008-03-25 10:14:35 -0700 | [diff] [blame] | 63 | int numnodes, int shift, int *nodeids) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | { |
Eric Dumazet | 529a340 | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 65 | unsigned long addr, end; |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 66 | int i, res = -1; |
Keith Mannthey | b684664 | 2005-07-28 21:15:38 -0700 | [diff] [blame] | 67 | |
travis@sgi.com | 4323838 | 2008-01-30 13:33:25 +0100 | [diff] [blame] | 68 | memset(memnodemap, 0xff, sizeof(s16)*memnodemapsize); |
Eric Dumazet | 529a340 | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 69 | for (i = 0; i < numnodes; i++) { |
| 70 | addr = nodes[i].start; |
| 71 | end = nodes[i].end; |
| 72 | if (addr >= end) |
| 73 | continue; |
Amul Shah | 076422d2 | 2007-02-13 13:26:19 +0100 | [diff] [blame] | 74 | if ((end >> shift) >= memnodemapsize) |
Eric Dumazet | 529a340 | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 75 | return 0; |
| 76 | do { |
travis@sgi.com | 4323838 | 2008-01-30 13:33:25 +0100 | [diff] [blame] | 77 | if (memnodemap[addr >> shift] != NUMA_NO_NODE) |
Eric Dumazet | 529a340 | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 78 | return -1; |
Suresh Siddha | 6ec6e0d | 2008-03-25 10:14:35 -0700 | [diff] [blame] | 79 | |
| 80 | if (!nodeids) |
| 81 | memnodemap[addr >> shift] = i; |
| 82 | else |
| 83 | memnodemap[addr >> shift] = nodeids[i]; |
| 84 | |
Amul Shah | 076422d2 | 2007-02-13 13:26:19 +0100 | [diff] [blame] | 85 | addr += (1UL << shift); |
Eric Dumazet | 529a340 | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 86 | } while (addr < end); |
| 87 | res = 1; |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 88 | } |
Eric Dumazet | 529a340 | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 89 | return res; |
| 90 | } |
| 91 | |
Amul Shah | 076422d2 | 2007-02-13 13:26:19 +0100 | [diff] [blame] | 92 | static int __init allocate_cachealigned_memnodemap(void) |
| 93 | { |
Yinghai Lu | 24a5da7 | 2008-02-01 17:49:41 +0100 | [diff] [blame] | 94 | unsigned long addr; |
Amul Shah | 076422d2 | 2007-02-13 13:26:19 +0100 | [diff] [blame] | 95 | |
| 96 | memnodemap = memnode.embedded_map; |
travis@sgi.com | 316390b | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 97 | if (memnodemapsize <= ARRAY_SIZE(memnode.embedded_map)) |
Amul Shah | 076422d2 | 2007-02-13 13:26:19 +0100 | [diff] [blame] | 98 | return 0; |
Amul Shah | 076422d2 | 2007-02-13 13:26:19 +0100 | [diff] [blame] | 99 | |
Yinghai Lu | 24a5da7 | 2008-02-01 17:49:41 +0100 | [diff] [blame] | 100 | addr = 0x8000; |
| 101 | nodemap_size = round_up(sizeof(s16) * memnodemapsize, L1_CACHE_BYTES); |
| 102 | nodemap_addr = find_e820_area(addr, end_pfn<<PAGE_SHIFT, |
| 103 | nodemap_size, L1_CACHE_BYTES); |
Amul Shah | 076422d2 | 2007-02-13 13:26:19 +0100 | [diff] [blame] | 104 | if (nodemap_addr == -1UL) { |
| 105 | printk(KERN_ERR |
| 106 | "NUMA: Unable to allocate Memory to Node hash map\n"); |
| 107 | nodemap_addr = nodemap_size = 0; |
| 108 | return -1; |
| 109 | } |
Yinghai Lu | 24a5da7 | 2008-02-01 17:49:41 +0100 | [diff] [blame] | 110 | memnodemap = phys_to_virt(nodemap_addr); |
Yinghai Lu | 25eff8d | 2008-02-01 17:49:41 +0100 | [diff] [blame] | 111 | reserve_early(nodemap_addr, nodemap_addr + nodemap_size, "MEMNODEMAP"); |
Amul Shah | 076422d2 | 2007-02-13 13:26:19 +0100 | [diff] [blame] | 112 | |
| 113 | printk(KERN_DEBUG "NUMA: Allocated memnodemap from %lx - %lx\n", |
| 114 | nodemap_addr, nodemap_addr + nodemap_size); |
| 115 | return 0; |
| 116 | } |
| 117 | |
| 118 | /* |
| 119 | * The LSB of all start and end addresses in the node map is the value of the |
| 120 | * maximum possible shift. |
| 121 | */ |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 122 | static int __init extract_lsb_from_nodes(const struct bootnode *nodes, |
| 123 | int numnodes) |
Amul Shah | 076422d2 | 2007-02-13 13:26:19 +0100 | [diff] [blame] | 124 | { |
Amul Shah | 5441392 | 2007-02-13 13:26:20 +0100 | [diff] [blame] | 125 | int i, nodes_used = 0; |
Amul Shah | 076422d2 | 2007-02-13 13:26:19 +0100 | [diff] [blame] | 126 | unsigned long start, end; |
| 127 | unsigned long bitfield = 0, memtop = 0; |
| 128 | |
| 129 | for (i = 0; i < numnodes; i++) { |
| 130 | start = nodes[i].start; |
| 131 | end = nodes[i].end; |
| 132 | if (start >= end) |
| 133 | continue; |
Amul Shah | 5441392 | 2007-02-13 13:26:20 +0100 | [diff] [blame] | 134 | bitfield |= start; |
| 135 | nodes_used++; |
Amul Shah | 076422d2 | 2007-02-13 13:26:19 +0100 | [diff] [blame] | 136 | if (end > memtop) |
| 137 | memtop = end; |
| 138 | } |
Amul Shah | 5441392 | 2007-02-13 13:26:20 +0100 | [diff] [blame] | 139 | if (nodes_used <= 1) |
| 140 | i = 63; |
| 141 | else |
| 142 | i = find_first_bit(&bitfield, sizeof(unsigned long)*8); |
Amul Shah | 076422d2 | 2007-02-13 13:26:19 +0100 | [diff] [blame] | 143 | memnodemapsize = (memtop >> i)+1; |
| 144 | return i; |
| 145 | } |
| 146 | |
Suresh Siddha | 6ec6e0d | 2008-03-25 10:14:35 -0700 | [diff] [blame] | 147 | int __init compute_hash_shift(struct bootnode *nodes, int numnodes, |
| 148 | int *nodeids) |
Eric Dumazet | 529a340 | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 149 | { |
Amul Shah | 076422d2 | 2007-02-13 13:26:19 +0100 | [diff] [blame] | 150 | int shift; |
Eric Dumazet | 529a340 | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 151 | |
Amul Shah | 076422d2 | 2007-02-13 13:26:19 +0100 | [diff] [blame] | 152 | shift = extract_lsb_from_nodes(nodes, numnodes); |
| 153 | if (allocate_cachealigned_memnodemap()) |
| 154 | return -1; |
Andi Kleen | 6b050f8 | 2006-01-11 22:44:33 +0100 | [diff] [blame] | 155 | printk(KERN_DEBUG "NUMA: Using %d for the hash shift.\n", |
Eric Dumazet | 529a340 | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 156 | shift); |
| 157 | |
Suresh Siddha | 6ec6e0d | 2008-03-25 10:14:35 -0700 | [diff] [blame] | 158 | if (populate_memnodemap(nodes, numnodes, shift, nodeids) != 1) { |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 159 | printk(KERN_INFO "Your memory is not aligned you need to " |
| 160 | "rebuild your kernel with a bigger NODEMAPSIZE " |
| 161 | "shift=%d\n", shift); |
Eric Dumazet | 529a340 | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 162 | return -1; |
| 163 | } |
Keith Mannthey | b684664 | 2005-07-28 21:15:38 -0700 | [diff] [blame] | 164 | return shift; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | } |
| 166 | |
Matt Tolentino | bbfceef | 2005-06-23 00:08:07 -0700 | [diff] [blame] | 167 | int early_pfn_to_nid(unsigned long pfn) |
| 168 | { |
| 169 | return phys_to_nid(pfn << PAGE_SHIFT); |
| 170 | } |
Matt Tolentino | bbfceef | 2005-06-23 00:08:07 -0700 | [diff] [blame] | 171 | |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 172 | static void * __init early_node_mem(int nodeid, unsigned long start, |
Yinghai Lu | 24a5da7 | 2008-02-01 17:49:41 +0100 | [diff] [blame] | 173 | unsigned long end, unsigned long size, |
| 174 | unsigned long align) |
Andi Kleen | a806223 | 2006-04-07 19:49:21 +0200 | [diff] [blame] | 175 | { |
Yinghai Lu | 24a5da7 | 2008-02-01 17:49:41 +0100 | [diff] [blame] | 176 | unsigned long mem = find_e820_area(start, end, size, align); |
Andi Kleen | a806223 | 2006-04-07 19:49:21 +0200 | [diff] [blame] | 177 | void *ptr; |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 178 | |
Yinghai Lu | 9347e0b | 2008-02-01 17:49:42 +0100 | [diff] [blame] | 179 | if (mem != -1L) |
Andi Kleen | a806223 | 2006-04-07 19:49:21 +0200 | [diff] [blame] | 180 | return __va(mem); |
Yinghai Lu | 9347e0b | 2008-02-01 17:49:42 +0100 | [diff] [blame] | 181 | |
Yinghai Lu | 24a5da7 | 2008-02-01 17:49:41 +0100 | [diff] [blame] | 182 | ptr = __alloc_bootmem_nopanic(size, align, __pa(MAX_DMA_ADDRESS)); |
Yoann Padioleau | 83e83d5 | 2007-10-17 18:04:35 +0200 | [diff] [blame] | 183 | if (ptr == NULL) { |
Andi Kleen | a806223 | 2006-04-07 19:49:21 +0200 | [diff] [blame] | 184 | printk(KERN_ERR "Cannot find %lu bytes in node %d\n", |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 185 | size, nodeid); |
Andi Kleen | a806223 | 2006-04-07 19:49:21 +0200 | [diff] [blame] | 186 | return NULL; |
| 187 | } |
| 188 | return ptr; |
| 189 | } |
| 190 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | /* Initialize bootmem allocator for a node */ |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 192 | void __init setup_node_bootmem(int nodeid, unsigned long start, |
| 193 | unsigned long end) |
| 194 | { |
| 195 | unsigned long start_pfn, end_pfn, bootmap_pages, bootmap_size; |
| 196 | unsigned long bootmap_start, nodedata_phys; |
Andi Kleen | a806223 | 2006-04-07 19:49:21 +0200 | [diff] [blame] | 197 | void *bootmap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | const int pgdat_size = round_up(sizeof(pg_data_t), PAGE_SIZE); |
Yinghai Lu | 1a27fc0 | 2008-03-18 12:52:37 -0700 | [diff] [blame^] | 199 | int nid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 201 | start = round_up(start, ZONE_ALIGN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 203 | printk(KERN_INFO "Bootmem setup node %d %016lx-%016lx\n", nodeid, |
| 204 | start, end); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | |
| 206 | start_pfn = start >> PAGE_SHIFT; |
| 207 | end_pfn = end >> PAGE_SHIFT; |
| 208 | |
Yinghai Lu | 24a5da7 | 2008-02-01 17:49:41 +0100 | [diff] [blame] | 209 | node_data[nodeid] = early_node_mem(nodeid, start, end, pgdat_size, |
| 210 | SMP_CACHE_BYTES); |
Andi Kleen | a806223 | 2006-04-07 19:49:21 +0200 | [diff] [blame] | 211 | if (node_data[nodeid] == NULL) |
| 212 | return; |
| 213 | nodedata_phys = __pa(node_data[nodeid]); |
Yinghai Lu | 6118f76 | 2008-02-04 16:47:56 +0100 | [diff] [blame] | 214 | printk(KERN_INFO " NODE_DATA [%016lx - %016lx]\n", nodedata_phys, |
| 215 | nodedata_phys + pgdat_size - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | memset(NODE_DATA(nodeid), 0, sizeof(pg_data_t)); |
| 218 | NODE_DATA(nodeid)->bdata = &plat_node_bdata[nodeid]; |
| 219 | NODE_DATA(nodeid)->node_start_pfn = start_pfn; |
| 220 | NODE_DATA(nodeid)->node_spanned_pages = end_pfn - start_pfn; |
| 221 | |
Yinghai Lu | 1a27fc0 | 2008-03-18 12:52:37 -0700 | [diff] [blame^] | 222 | /* |
| 223 | * Find a place for the bootmem map |
| 224 | * nodedata_phys could be on other nodes by alloc_bootmem, |
| 225 | * so need to sure bootmap_start not to be small, otherwise |
| 226 | * early_node_mem will get that with find_e820_area instead |
| 227 | * of alloc_bootmem, that could clash with reserved range |
| 228 | */ |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 229 | bootmap_pages = bootmem_bootmap_pages(end_pfn - start_pfn); |
Yinghai Lu | 1a27fc0 | 2008-03-18 12:52:37 -0700 | [diff] [blame^] | 230 | nid = phys_to_nid(nodedata_phys); |
| 231 | if (nid == nodeid) |
| 232 | bootmap_start = round_up(nodedata_phys + pgdat_size, PAGE_SIZE); |
| 233 | else |
| 234 | bootmap_start = round_up(start, PAGE_SIZE); |
Yinghai Lu | 24a5da7 | 2008-02-01 17:49:41 +0100 | [diff] [blame] | 235 | /* |
| 236 | * SMP_CAHCE_BYTES could be enough, but init_bootmem_node like |
| 237 | * to use that to align to PAGE_SIZE |
| 238 | */ |
Andi Kleen | a806223 | 2006-04-07 19:49:21 +0200 | [diff] [blame] | 239 | bootmap = early_node_mem(nodeid, bootmap_start, end, |
Yinghai Lu | 24a5da7 | 2008-02-01 17:49:41 +0100 | [diff] [blame] | 240 | bootmap_pages<<PAGE_SHIFT, PAGE_SIZE); |
Andi Kleen | a806223 | 2006-04-07 19:49:21 +0200 | [diff] [blame] | 241 | if (bootmap == NULL) { |
| 242 | if (nodedata_phys < start || nodedata_phys >= end) |
Yinghai Lu | 37bff62 | 2008-03-18 12:40:04 -0700 | [diff] [blame] | 243 | free_bootmem(nodedata_phys, pgdat_size); |
Andi Kleen | a806223 | 2006-04-07 19:49:21 +0200 | [diff] [blame] | 244 | node_data[nodeid] = NULL; |
| 245 | return; |
| 246 | } |
| 247 | bootmap_start = __pa(bootmap); |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 248 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | bootmap_size = init_bootmem_node(NODE_DATA(nodeid), |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 250 | bootmap_start >> PAGE_SHIFT, |
| 251 | start_pfn, end_pfn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | |
Yinghai Lu | 6118f76 | 2008-02-04 16:47:56 +0100 | [diff] [blame] | 253 | printk(KERN_INFO " bootmap [%016lx - %016lx] pages %lx\n", |
| 254 | bootmap_start, bootmap_start + bootmap_size - 1, |
| 255 | bootmap_pages); |
| 256 | |
Mel Gorman | 5cb248a | 2006-09-27 01:49:52 -0700 | [diff] [blame] | 257 | free_bootmem_with_active_regions(nodeid, end); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | |
Yinghai Lu | 1a27fc0 | 2008-03-18 12:52:37 -0700 | [diff] [blame^] | 259 | /* |
| 260 | * convert early reserve to bootmem reserve earlier |
| 261 | * otherwise early_node_mem could use early reserved mem |
| 262 | * on previous node |
| 263 | */ |
| 264 | early_res_to_bootmem(start, end); |
| 265 | |
| 266 | /* |
| 267 | * in some case early_node_mem could use alloc_bootmem |
| 268 | * to get range on other node, don't reserve that again |
| 269 | */ |
| 270 | if (nid != nodeid) |
| 271 | printk(KERN_INFO " NODE_DATA(%d) on node %d\n", nodeid, nid); |
| 272 | else |
| 273 | reserve_bootmem_node(NODE_DATA(nodeid), nodedata_phys, |
| 274 | pgdat_size, BOOTMEM_DEFAULT); |
| 275 | nid = phys_to_nid(bootmap_start); |
| 276 | if (nid != nodeid) |
| 277 | printk(KERN_INFO " bootmap(%d) on node %d\n", nodeid, nid); |
| 278 | else |
| 279 | reserve_bootmem_node(NODE_DATA(nodeid), bootmap_start, |
| 280 | bootmap_pages<<PAGE_SHIFT, BOOTMEM_DEFAULT); |
| 281 | |
Andi Kleen | 68a3a7f | 2006-04-07 19:49:18 +0200 | [diff] [blame] | 282 | #ifdef CONFIG_ACPI_NUMA |
| 283 | srat_reserve_add_area(nodeid); |
| 284 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | node_set_online(nodeid); |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 286 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 288 | /* |
| 289 | * There are unfortunately some poorly designed mainboards around that |
| 290 | * only connect memory to a single CPU. This breaks the 1:1 cpu->node |
| 291 | * mapping. To avoid this fill in the mapping for all possible CPUs, |
| 292 | * as the number of CPUs is not known yet. We round robin the existing |
| 293 | * nodes. |
| 294 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | void __init numa_init_array(void) |
| 296 | { |
| 297 | int rr, i; |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 298 | |
Ravikiran G Thirumalai | 85cc513 | 2005-09-30 11:59:22 -0700 | [diff] [blame] | 299 | rr = first_node(node_online_map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | for (i = 0; i < NR_CPUS; i++) { |
travis@sgi.com | 1ce3571 | 2008-01-30 13:33:33 +0100 | [diff] [blame] | 301 | if (early_cpu_to_node(i) != NUMA_NO_NODE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | continue; |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 303 | numa_set_node(i, rr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | rr = next_node(rr, node_online_map); |
| 305 | if (rr == MAX_NUMNODES) |
| 306 | rr = first_node(node_online_map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | } |
| 309 | |
| 310 | #ifdef CONFIG_NUMA_EMU |
Rohit Seth | 53fee04 | 2007-02-13 13:26:22 +0100 | [diff] [blame] | 311 | /* Numa emulation */ |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 312 | char *cmdline __initdata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | |
Rohit Seth | 53fee04 | 2007-02-13 13:26:22 +0100 | [diff] [blame] | 314 | /* |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 315 | * Setups up nid to range from addr to addr + size. If the end |
| 316 | * boundary is greater than max_addr, then max_addr is used instead. |
| 317 | * The return value is 0 if there is additional memory left for |
| 318 | * allocation past addr and -1 otherwise. addr is adjusted to be at |
| 319 | * the end of the node. |
Rohit Seth | 53fee04 | 2007-02-13 13:26:22 +0100 | [diff] [blame] | 320 | */ |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 321 | static int __init setup_node_range(int nid, struct bootnode *nodes, u64 *addr, |
| 322 | u64 size, u64 max_addr) |
Rohit Seth | 53fee04 | 2007-02-13 13:26:22 +0100 | [diff] [blame] | 323 | { |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 324 | int ret = 0; |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 325 | |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 326 | nodes[nid].start = *addr; |
| 327 | *addr += size; |
| 328 | if (*addr >= max_addr) { |
| 329 | *addr = max_addr; |
| 330 | ret = -1; |
| 331 | } |
| 332 | nodes[nid].end = *addr; |
Suresh Siddha | e3f1cae | 2007-05-02 19:27:20 +0200 | [diff] [blame] | 333 | node_set(nid, node_possible_map); |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 334 | printk(KERN_INFO "Faking node %d at %016Lx-%016Lx (%LuMB)\n", nid, |
| 335 | nodes[nid].start, nodes[nid].end, |
| 336 | (nodes[nid].end - nodes[nid].start) >> 20); |
| 337 | return ret; |
Rohit Seth | 53fee04 | 2007-02-13 13:26:22 +0100 | [diff] [blame] | 338 | } |
| 339 | |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 340 | /* |
| 341 | * Splits num_nodes nodes up equally starting at node_start. The return value |
| 342 | * is the number of nodes split up and addr is adjusted to be at the end of the |
| 343 | * last node allocated. |
| 344 | */ |
| 345 | static int __init split_nodes_equally(struct bootnode *nodes, u64 *addr, |
| 346 | u64 max_addr, int node_start, |
| 347 | int num_nodes) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | { |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 349 | unsigned int big; |
| 350 | u64 size; |
| 351 | int i; |
Rohit Seth | 53fee04 | 2007-02-13 13:26:22 +0100 | [diff] [blame] | 352 | |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 353 | if (num_nodes <= 0) |
| 354 | return -1; |
| 355 | if (num_nodes > MAX_NUMNODES) |
| 356 | num_nodes = MAX_NUMNODES; |
David Rientjes | a7e9662 | 2007-07-21 17:11:29 +0200 | [diff] [blame] | 357 | size = (max_addr - *addr - e820_hole_size(*addr, max_addr)) / |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 358 | num_nodes; |
Rohit Seth | 53fee04 | 2007-02-13 13:26:22 +0100 | [diff] [blame] | 359 | /* |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 360 | * Calculate the number of big nodes that can be allocated as a result |
| 361 | * of consolidating the leftovers. |
Rohit Seth | 53fee04 | 2007-02-13 13:26:22 +0100 | [diff] [blame] | 362 | */ |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 363 | big = ((size & ~FAKE_NODE_MIN_HASH_MASK) * num_nodes) / |
| 364 | FAKE_NODE_MIN_SIZE; |
Rohit Seth | 53fee04 | 2007-02-13 13:26:22 +0100 | [diff] [blame] | 365 | |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 366 | /* Round down to nearest FAKE_NODE_MIN_SIZE. */ |
| 367 | size &= FAKE_NODE_MIN_HASH_MASK; |
| 368 | if (!size) { |
| 369 | printk(KERN_ERR "Not enough memory for each node. " |
| 370 | "NUMA emulation disabled.\n"); |
| 371 | return -1; |
Rohit Seth | 53fee04 | 2007-02-13 13:26:22 +0100 | [diff] [blame] | 372 | } |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 373 | |
| 374 | for (i = node_start; i < num_nodes + node_start; i++) { |
| 375 | u64 end = *addr + size; |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 376 | |
Rohit Seth | 53fee04 | 2007-02-13 13:26:22 +0100 | [diff] [blame] | 377 | if (i < big) |
| 378 | end += FAKE_NODE_MIN_SIZE; |
| 379 | /* |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 380 | * The final node can have the remaining system RAM. Other |
| 381 | * nodes receive roughly the same amount of available pages. |
Rohit Seth | 53fee04 | 2007-02-13 13:26:22 +0100 | [diff] [blame] | 382 | */ |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 383 | if (i == num_nodes + node_start - 1) |
Rohit Seth | 53fee04 | 2007-02-13 13:26:22 +0100 | [diff] [blame] | 384 | end = max_addr; |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 385 | else |
David Rientjes | a7e9662 | 2007-07-21 17:11:29 +0200 | [diff] [blame] | 386 | while (end - *addr - e820_hole_size(*addr, end) < |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 387 | size) { |
| 388 | end += FAKE_NODE_MIN_SIZE; |
| 389 | if (end > max_addr) { |
| 390 | end = max_addr; |
| 391 | break; |
| 392 | } |
| 393 | } |
| 394 | if (setup_node_range(i, nodes, addr, end - *addr, max_addr) < 0) |
| 395 | break; |
| 396 | } |
| 397 | return i - node_start + 1; |
| 398 | } |
| 399 | |
| 400 | /* |
David Rientjes | 382591d | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 401 | * Splits the remaining system RAM into chunks of size. The remaining memory is |
| 402 | * always assigned to a final node and can be asymmetric. Returns the number of |
| 403 | * nodes split. |
| 404 | */ |
| 405 | static int __init split_nodes_by_size(struct bootnode *nodes, u64 *addr, |
| 406 | u64 max_addr, int node_start, u64 size) |
| 407 | { |
| 408 | int i = node_start; |
| 409 | size = (size << 20) & FAKE_NODE_MIN_HASH_MASK; |
| 410 | while (!setup_node_range(i++, nodes, addr, size, max_addr)) |
| 411 | ; |
| 412 | return i - node_start; |
| 413 | } |
| 414 | |
| 415 | /* |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 416 | * Sets up the system RAM area from start_pfn to end_pfn according to the |
| 417 | * numa=fake command-line option. |
| 418 | */ |
Mike Travis | f46bdf2 | 2008-04-04 18:11:09 -0700 | [diff] [blame] | 419 | static struct bootnode nodes[MAX_NUMNODES] __initdata; |
| 420 | |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 421 | static int __init numa_emulation(unsigned long start_pfn, unsigned long end_pfn) |
| 422 | { |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 423 | u64 size, addr = start_pfn << PAGE_SHIFT; |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 424 | u64 max_addr = end_pfn << PAGE_SHIFT; |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 425 | int num_nodes = 0, num = 0, coeff_flag, coeff = -1, i; |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 426 | |
| 427 | memset(&nodes, 0, sizeof(nodes)); |
| 428 | /* |
| 429 | * If the numa=fake command-line is just a single number N, split the |
| 430 | * system RAM into N fake nodes. |
| 431 | */ |
| 432 | if (!strchr(cmdline, '*') && !strchr(cmdline, ',')) { |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 433 | long n = simple_strtol(cmdline, NULL, 0); |
| 434 | |
| 435 | num_nodes = split_nodes_equally(nodes, &addr, max_addr, 0, n); |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 436 | if (num_nodes < 0) |
| 437 | return num_nodes; |
| 438 | goto out; |
| 439 | } |
| 440 | |
| 441 | /* Parse the command line. */ |
David Rientjes | 382591d | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 442 | for (coeff_flag = 0; ; cmdline++) { |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 443 | if (*cmdline && isdigit(*cmdline)) { |
| 444 | num = num * 10 + *cmdline - '0'; |
| 445 | continue; |
| 446 | } |
David Rientjes | 382591d | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 447 | if (*cmdline == '*') { |
| 448 | if (num > 0) |
| 449 | coeff = num; |
| 450 | coeff_flag = 1; |
| 451 | } |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 452 | if (!*cmdline || *cmdline == ',') { |
David Rientjes | 382591d | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 453 | if (!coeff_flag) |
| 454 | coeff = 1; |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 455 | /* |
| 456 | * Round down to the nearest FAKE_NODE_MIN_SIZE. |
| 457 | * Command-line coefficients are in megabytes. |
| 458 | */ |
| 459 | size = ((u64)num << 20) & FAKE_NODE_MIN_HASH_MASK; |
David Rientjes | 382591d | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 460 | if (size) |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 461 | for (i = 0; i < coeff; i++, num_nodes++) |
| 462 | if (setup_node_range(num_nodes, nodes, |
| 463 | &addr, size, max_addr) < 0) |
| 464 | goto done; |
David Rientjes | 382591d | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 465 | if (!*cmdline) |
| 466 | break; |
| 467 | coeff_flag = 0; |
| 468 | coeff = -1; |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 469 | } |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 470 | num = 0; |
| 471 | } |
| 472 | done: |
| 473 | if (!num_nodes) |
| 474 | return -1; |
David Rientjes | 14694d7 | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 475 | /* Fill remainder of system RAM, if appropriate. */ |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 476 | if (addr < max_addr) { |
David Rientjes | 382591d | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 477 | if (coeff_flag && coeff < 0) { |
| 478 | /* Split remaining nodes into num-sized chunks */ |
| 479 | num_nodes += split_nodes_by_size(nodes, &addr, max_addr, |
| 480 | num_nodes, num); |
| 481 | goto out; |
| 482 | } |
David Rientjes | 14694d7 | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 483 | switch (*(cmdline - 1)) { |
| 484 | case '*': |
| 485 | /* Split remaining nodes into coeff chunks */ |
| 486 | if (coeff <= 0) |
| 487 | break; |
| 488 | num_nodes += split_nodes_equally(nodes, &addr, max_addr, |
| 489 | num_nodes, coeff); |
| 490 | break; |
| 491 | case ',': |
| 492 | /* Do not allocate remaining system RAM */ |
| 493 | break; |
| 494 | default: |
| 495 | /* Give one final node */ |
| 496 | setup_node_range(num_nodes, nodes, &addr, |
| 497 | max_addr - addr, max_addr); |
| 498 | num_nodes++; |
| 499 | } |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 500 | } |
| 501 | out: |
Suresh Siddha | 6ec6e0d | 2008-03-25 10:14:35 -0700 | [diff] [blame] | 502 | memnode_shift = compute_hash_shift(nodes, num_nodes, NULL); |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 503 | if (memnode_shift < 0) { |
| 504 | memnode_shift = 0; |
| 505 | printk(KERN_ERR "No NUMA hash function found. NUMA emulation " |
| 506 | "disabled.\n"); |
| 507 | return -1; |
| 508 | } |
| 509 | |
| 510 | /* |
| 511 | * We need to vacate all active ranges that may have been registered by |
David Rientjes | 1c05f09 | 2007-07-21 17:11:30 +0200 | [diff] [blame] | 512 | * SRAT and set acpi_numa to -1 so that srat_disabled() always returns |
| 513 | * true. NUMA emulation has succeeded so we will not scan ACPI nodes. |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 514 | */ |
| 515 | remove_all_active_ranges(); |
David Rientjes | 1c05f09 | 2007-07-21 17:11:30 +0200 | [diff] [blame] | 516 | #ifdef CONFIG_ACPI_NUMA |
| 517 | acpi_numa = -1; |
| 518 | #endif |
Suresh Siddha | e3f1cae | 2007-05-02 19:27:20 +0200 | [diff] [blame] | 519 | for_each_node_mask(i, node_possible_map) { |
Mel Gorman | 5cb248a | 2006-09-27 01:49:52 -0700 | [diff] [blame] | 520 | e820_register_active_regions(i, nodes[i].start >> PAGE_SHIFT, |
| 521 | nodes[i].end >> PAGE_SHIFT); |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 522 | setup_node_bootmem(i, nodes[i].start, nodes[i].end); |
Mel Gorman | 5cb248a | 2006-09-27 01:49:52 -0700 | [diff] [blame] | 523 | } |
David Rientjes | 3484d79 | 2007-07-21 17:10:32 +0200 | [diff] [blame] | 524 | acpi_fake_nodes(nodes, num_nodes); |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 525 | numa_init_array(); |
| 526 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | } |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 528 | #endif /* CONFIG_NUMA_EMU */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | |
| 530 | void __init numa_initmem_init(unsigned long start_pfn, unsigned long end_pfn) |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 531 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | int i; |
| 533 | |
Suresh Siddha | e3f1cae | 2007-05-02 19:27:20 +0200 | [diff] [blame] | 534 | nodes_clear(node_possible_map); |
Yinghai Lu | b7ad149 | 2008-02-17 02:02:21 -0800 | [diff] [blame] | 535 | nodes_clear(node_online_map); |
Suresh Siddha | e3f1cae | 2007-05-02 19:27:20 +0200 | [diff] [blame] | 536 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | #ifdef CONFIG_NUMA_EMU |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 538 | if (cmdline && !numa_emulation(start_pfn, end_pfn)) |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 539 | return; |
Suresh Siddha | e3f1cae | 2007-05-02 19:27:20 +0200 | [diff] [blame] | 540 | nodes_clear(node_possible_map); |
Yinghai Lu | b7ad149 | 2008-02-17 02:02:21 -0800 | [diff] [blame] | 541 | nodes_clear(node_online_map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | #endif |
| 543 | |
| 544 | #ifdef CONFIG_ACPI_NUMA |
| 545 | if (!numa_off && !acpi_scan_nodes(start_pfn << PAGE_SHIFT, |
| 546 | end_pfn << PAGE_SHIFT)) |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 547 | return; |
Suresh Siddha | e3f1cae | 2007-05-02 19:27:20 +0200 | [diff] [blame] | 548 | nodes_clear(node_possible_map); |
Yinghai Lu | b7ad149 | 2008-02-17 02:02:21 -0800 | [diff] [blame] | 549 | nodes_clear(node_online_map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | #endif |
| 551 | |
| 552 | #ifdef CONFIG_K8_NUMA |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 553 | if (!numa_off && !k8_scan_nodes(start_pfn<<PAGE_SHIFT, |
| 554 | end_pfn<<PAGE_SHIFT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | return; |
Suresh Siddha | e3f1cae | 2007-05-02 19:27:20 +0200 | [diff] [blame] | 556 | nodes_clear(node_possible_map); |
Yinghai Lu | b7ad149 | 2008-02-17 02:02:21 -0800 | [diff] [blame] | 557 | nodes_clear(node_online_map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | #endif |
| 559 | printk(KERN_INFO "%s\n", |
| 560 | numa_off ? "NUMA turned off" : "No NUMA configuration found"); |
| 561 | |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 562 | printk(KERN_INFO "Faking a node at %016lx-%016lx\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | start_pfn << PAGE_SHIFT, |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 564 | end_pfn << PAGE_SHIFT); |
| 565 | /* setup dummy node covering all memory */ |
| 566 | memnode_shift = 63; |
Amul Shah | 076422d2 | 2007-02-13 13:26:19 +0100 | [diff] [blame] | 567 | memnodemap = memnode.embedded_map; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | memnodemap[0] = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | node_set_online(0); |
Suresh Siddha | e3f1cae | 2007-05-02 19:27:20 +0200 | [diff] [blame] | 570 | node_set(0, node_possible_map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | for (i = 0; i < NR_CPUS; i++) |
Andi Kleen | 69d81fc | 2005-11-05 17:25:53 +0100 | [diff] [blame] | 572 | numa_set_node(i, 0); |
travis@sgi.com | df3825c | 2008-01-30 13:33:11 +0100 | [diff] [blame] | 573 | /* cpumask_of_cpu() may not be available during early startup */ |
travis@sgi.com | 3cc87e3 | 2008-01-30 13:33:11 +0100 | [diff] [blame] | 574 | memset(&node_to_cpumask_map[0], 0, sizeof(node_to_cpumask_map[0])); |
| 575 | cpu_set(0, node_to_cpumask_map[0]); |
Mel Gorman | 5cb248a | 2006-09-27 01:49:52 -0700 | [diff] [blame] | 576 | e820_register_active_regions(0, start_pfn, end_pfn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | setup_node_bootmem(0, start_pfn << PAGE_SHIFT, end_pfn << PAGE_SHIFT); |
| 578 | } |
| 579 | |
Ashok Raj | e6982c6 | 2005-06-25 14:54:58 -0700 | [diff] [blame] | 580 | __cpuinit void numa_add_cpu(int cpu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | { |
travis@sgi.com | 1ce3571 | 2008-01-30 13:33:33 +0100 | [diff] [blame] | 582 | set_bit(cpu, |
| 583 | (unsigned long *)&node_to_cpumask_map[early_cpu_to_node(cpu)]); |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 584 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | |
Andi Kleen | 69d81fc | 2005-11-05 17:25:53 +0100 | [diff] [blame] | 586 | void __cpuinit numa_set_node(int cpu, int node) |
| 587 | { |
travis@sgi.com | 4323838 | 2008-01-30 13:33:25 +0100 | [diff] [blame] | 588 | int *cpu_to_node_map = x86_cpu_to_node_map_early_ptr; |
travis@sgi.com | df3825c | 2008-01-30 13:33:11 +0100 | [diff] [blame] | 589 | |
travis@sgi.com | df3825c | 2008-01-30 13:33:11 +0100 | [diff] [blame] | 590 | if(cpu_to_node_map) |
| 591 | cpu_to_node_map[cpu] = node; |
| 592 | else if(per_cpu_offset(cpu)) |
| 593 | per_cpu(x86_cpu_to_node_map, cpu) = node; |
| 594 | else |
| 595 | Dprintk(KERN_INFO "Setting node for non-present cpu %d\n", cpu); |
Andi Kleen | 69d81fc | 2005-11-05 17:25:53 +0100 | [diff] [blame] | 596 | } |
| 597 | |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 598 | unsigned long __init numa_free_all_bootmem(void) |
| 599 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | unsigned long pages = 0; |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 601 | int i; |
| 602 | |
| 603 | for_each_online_node(i) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | pages += free_all_bootmem_node(NODE_DATA(i)); |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 605 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | return pages; |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 607 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | |
| 609 | void __init paging_init(void) |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 610 | { |
Mel Gorman | 6391af1 | 2006-10-11 01:20:39 -0700 | [diff] [blame] | 611 | unsigned long max_zone_pfns[MAX_NR_ZONES]; |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 612 | |
Mel Gorman | 6391af1 | 2006-10-11 01:20:39 -0700 | [diff] [blame] | 613 | memset(max_zone_pfns, 0, sizeof(max_zone_pfns)); |
| 614 | max_zone_pfns[ZONE_DMA] = MAX_DMA_PFN; |
| 615 | max_zone_pfns[ZONE_DMA32] = MAX_DMA32_PFN; |
| 616 | max_zone_pfns[ZONE_NORMAL] = end_pfn; |
Bob Picco | d3ee871 | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 617 | |
Bob Picco | f0a5a58 | 2007-02-13 13:26:25 +0100 | [diff] [blame] | 618 | sparse_memory_present_with_active_regions(MAX_NUMNODES); |
| 619 | sparse_init(); |
Bob Picco | d3ee871 | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 620 | |
Mel Gorman | 5cb248a | 2006-09-27 01:49:52 -0700 | [diff] [blame] | 621 | free_area_init_nodes(max_zone_pfns); |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 622 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | |
Andi Kleen | 2c8c0e6 | 2006-09-26 10:52:32 +0200 | [diff] [blame] | 624 | static __init int numa_setup(char *opt) |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 625 | { |
Andi Kleen | 2c8c0e6 | 2006-09-26 10:52:32 +0200 | [diff] [blame] | 626 | if (!opt) |
| 627 | return -EINVAL; |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 628 | if (!strncmp(opt, "off", 3)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | numa_off = 1; |
| 630 | #ifdef CONFIG_NUMA_EMU |
David Rientjes | 8b8ca80e | 2007-05-02 19:27:09 +0200 | [diff] [blame] | 631 | if (!strncmp(opt, "fake=", 5)) |
| 632 | cmdline = opt + 5; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | #endif |
| 634 | #ifdef CONFIG_ACPI_NUMA |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 635 | if (!strncmp(opt, "noacpi", 6)) |
| 636 | acpi_numa = -1; |
| 637 | if (!strncmp(opt, "hotadd=", 7)) |
Andi Kleen | 68a3a7f | 2006-04-07 19:49:18 +0200 | [diff] [blame] | 638 | hotadd_percent = simple_strtoul(opt+7, NULL, 10); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | #endif |
Andi Kleen | 2c8c0e6 | 2006-09-26 10:52:32 +0200 | [diff] [blame] | 640 | return 0; |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 641 | } |
Andi Kleen | 2c8c0e6 | 2006-09-26 10:52:32 +0200 | [diff] [blame] | 642 | early_param("numa", numa_setup); |
| 643 | |
Ravikiran Thirumalai | 05b3cbd | 2006-01-11 22:45:36 +0100 | [diff] [blame] | 644 | /* |
| 645 | * Setup early cpu_to_node. |
| 646 | * |
| 647 | * Populate cpu_to_node[] only if x86_cpu_to_apicid[], |
| 648 | * and apicid_to_node[] tables have valid entries for a CPU. |
| 649 | * This means we skip cpu_to_node[] initialisation for NUMA |
| 650 | * emulation and faking node case (when running a kernel compiled |
| 651 | * for NUMA on a non NUMA box), which is OK as cpu_to_node[] |
| 652 | * is already initialized in a round robin manner at numa_init_array, |
| 653 | * prior to this call, and this initialization is good enough |
| 654 | * for the fake NUMA cases. |
| 655 | */ |
| 656 | void __init init_cpu_to_node(void) |
| 657 | { |
| 658 | int i; |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 659 | |
| 660 | for (i = 0; i < NR_CPUS; i++) { |
Yinghai Lu | 7c9e92b | 2008-02-19 15:35:54 -0800 | [diff] [blame] | 661 | int node; |
travis@sgi.com | ef97001 | 2008-01-30 13:33:10 +0100 | [diff] [blame] | 662 | u16 apicid = x86_cpu_to_apicid_init[i]; |
Thomas Gleixner | e3cfe52 | 2008-01-30 13:30:37 +0100 | [diff] [blame] | 663 | |
Ravikiran Thirumalai | 05b3cbd | 2006-01-11 22:45:36 +0100 | [diff] [blame] | 664 | if (apicid == BAD_APICID) |
| 665 | continue; |
Yinghai Lu | 7c9e92b | 2008-02-19 15:35:54 -0800 | [diff] [blame] | 666 | node = apicid_to_node[apicid]; |
| 667 | if (node == NUMA_NO_NODE) |
Ravikiran Thirumalai | 05b3cbd | 2006-01-11 22:45:36 +0100 | [diff] [blame] | 668 | continue; |
Yinghai Lu | 7c9e92b | 2008-02-19 15:35:54 -0800 | [diff] [blame] | 669 | if (!node_online(node)) |
| 670 | continue; |
| 671 | numa_set_node(i, node); |
Ravikiran Thirumalai | 05b3cbd | 2006-01-11 22:45:36 +0100 | [diff] [blame] | 672 | } |
| 673 | } |
| 674 | |
Andi Kleen | cf05013 | 2006-01-11 22:46:27 +0100 | [diff] [blame] | 675 | |