diff options
Diffstat (limited to 'arch/x86_64/mm/numa.c')
| -rw-r--r-- | arch/x86_64/mm/numa.c | 39 |
1 files changed, 16 insertions, 23 deletions
diff --git a/arch/x86_64/mm/numa.c b/arch/x86_64/mm/numa.c index 22e51beee8d3..4be82d6e2b48 100644 --- a/arch/x86_64/mm/numa.c +++ b/arch/x86_64/mm/numa.c @@ -25,8 +25,7 @@ struct pglist_data *node_data[MAX_NUMNODES] __read_mostly; bootmem_data_t plat_node_bdata[MAX_NUMNODES]; -int memnode_shift; -u8 memnodemap[NODEMAPSIZE]; +struct memnode memnode; unsigned char cpu_to_node[NR_CPUS] __read_mostly = { [0 ... NR_CPUS-1] = NUMA_NO_NODE @@ -47,7 +46,7 @@ int numa_off __initdata; * -1 if node overlap or lost ram (shift too big) */ static int __init -populate_memnodemap(const struct node *nodes, int numnodes, int shift) +populate_memnodemap(const struct bootnode *nodes, int numnodes, int shift) { int i; int res = -1; @@ -74,7 +73,7 @@ populate_memnodemap(const struct node *nodes, int numnodes, int shift) return res; } -int __init compute_hash_shift(struct node *nodes, int numnodes) +int __init compute_hash_shift(struct bootnode *nodes, int numnodes) { int shift = 20; @@ -149,7 +148,7 @@ void __init setup_node_bootmem(int nodeid, unsigned long start, unsigned long en /* Initialize final allocator for a zone */ void __init setup_node_zones(int nodeid) { - unsigned long start_pfn, end_pfn; + unsigned long start_pfn, end_pfn, memmapsize, limit; unsigned long zones[MAX_NR_ZONES]; unsigned long holes[MAX_NR_ZONES]; @@ -159,6 +158,16 @@ void __init setup_node_zones(int nodeid) Dprintk(KERN_INFO "Setting up node %d %lx-%lx\n", nodeid, start_pfn, end_pfn); + /* Try to allocate mem_map at end to not fill up precious <4GB + memory. */ + memmapsize = sizeof(struct page) * (end_pfn-start_pfn); + limit = end_pfn << PAGE_SHIFT; + NODE_DATA(nodeid)->node_mem_map = + __alloc_bootmem_core(NODE_DATA(nodeid)->bdata, + memmapsize, SMP_CACHE_BYTES, + round_down(limit - memmapsize, PAGE_SIZE), + limit); + size_zones(zones, holes, start_pfn, end_pfn); free_area_init_node(nodeid, NODE_DATA(nodeid), zones, start_pfn, holes); @@ -191,7 +200,7 @@ int numa_fake __initdata = 0; static int numa_emulation(unsigned long start_pfn, unsigned long end_pfn) { int i; - struct node nodes[MAX_NUMNODES]; + struct bootnode nodes[MAX_NUMNODES]; unsigned long sz = ((end_pfn - start_pfn)<<PAGE_SHIFT) / numa_fake; /* Kludge needed for the hash function */ @@ -357,8 +366,7 @@ void __init init_cpu_to_node(void) EXPORT_SYMBOL(cpu_to_node); EXPORT_SYMBOL(node_to_cpumask); -EXPORT_SYMBOL(memnode_shift); -EXPORT_SYMBOL(memnodemap); +EXPORT_SYMBOL(memnode); EXPORT_SYMBOL(node_data); #ifdef CONFIG_DISCONTIGMEM @@ -369,21 +377,6 @@ 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; |