diff options
Diffstat (limited to 'arch/x86/mm/numa_32.c')
| -rw-r--r-- | arch/x86/mm/numa_32.c | 231 |
1 files changed, 2 insertions, 229 deletions
diff --git a/arch/x86/mm/numa_32.c b/arch/x86/mm/numa_32.c index fbd558fe10b..849a975d3fa 100644 --- a/arch/x86/mm/numa_32.c +++ b/arch/x86/mm/numa_32.c @@ -22,36 +22,11 @@ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ -#include <linux/mm.h> #include <linux/bootmem.h> #include <linux/memblock.h> -#include <linux/mmzone.h> -#include <linux/highmem.h> -#include <linux/initrd.h> -#include <linux/nodemask.h> #include <linux/module.h> -#include <linux/kexec.h> -#include <linux/pfn.h> -#include <linux/swap.h> -#include <linux/acpi.h> - -#include <asm/e820.h> -#include <asm/setup.h> -#include <asm/mmzone.h> -#include <asm/bios_ebda.h> -#include <asm/proto.h> - -/* - * numa interface - we expect the numa architecture specific code to have - * populated the following initialisation. - * - * 1) node_online_map - the map of all nodes configured (online) in the system - * 2) node_start_pfn - the starting page frame number for a node - * 3) node_end_pfn - the ending page fram number for a node - */ -unsigned long node_start_pfn[MAX_NUMNODES] __read_mostly; -unsigned long node_end_pfn[MAX_NUMNODES] __read_mostly; +#include "numa_internal.h" #ifdef CONFIG_DISCONTIGMEM /* @@ -96,7 +71,6 @@ unsigned long node_memmap_size_bytes(int nid, unsigned long start_pfn, } #endif -extern unsigned long find_max_low_pfn(void); extern unsigned long highend_pfn, highstart_pfn; #define LARGE_PAGE_BYTES (PTRS_PER_PTE * PAGE_SIZE) @@ -105,68 +79,6 @@ static void *node_remap_start_vaddr[MAX_NUMNODES]; void set_pmd_pfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags); /* - * FLAT - support for basic PC memory model with discontig enabled, essentially - * a single node with all available processors in it with a flat - * memory map. - */ -static int __init get_memcfg_numa_flat(void) -{ - printk(KERN_DEBUG "NUMA - single node, flat memory mode\n"); - - node_start_pfn[0] = 0; - node_end_pfn[0] = max_pfn; - memblock_x86_register_active_regions(0, 0, max_pfn); - - /* Indicate there is one node available. */ - nodes_clear(node_online_map); - node_set_online(0); - return 1; -} - -/* - * Find the highest page frame number we have available for the node - */ -static void __init propagate_e820_map_node(int nid) -{ - if (node_end_pfn[nid] > max_pfn) - node_end_pfn[nid] = max_pfn; - /* - * if a user has given mem=XXXX, then we need to make sure - * that the node _starts_ before that, too, not just ends - */ - if (node_start_pfn[nid] > max_pfn) - node_start_pfn[nid] = max_pfn; - BUG_ON(node_start_pfn[nid] > node_end_pfn[nid]); -} - -/* - * Allocate memory for the pg_data_t for this node via a crude pre-bootmem - * method. For node zero take this from the bottom of memory, for - * subsequent nodes place them at node_remap_start_vaddr which contains - * node local data in physically node local memory. See setup_memory() - * for details. - */ -static void __init allocate_pgdat(int nid) -{ - char buf[16]; - - NODE_DATA(nid) = alloc_remap(nid, ALIGN(sizeof(pg_data_t), PAGE_SIZE)); - if (!NODE_DATA(nid)) { - unsigned long pgdat_phys; - pgdat_phys = memblock_find_in_range(min_low_pfn<<PAGE_SHIFT, - max_pfn_mapped<<PAGE_SHIFT, - sizeof(pg_data_t), - PAGE_SIZE); - NODE_DATA(nid) = (pg_data_t *)(pfn_to_kaddr(pgdat_phys>>PAGE_SHIFT)); - memset(buf, 0, sizeof(buf)); - sprintf(buf, "NODE_DATA %d", nid); - memblock_x86_reserve_range(pgdat_phys, pgdat_phys + sizeof(pg_data_t), buf); - } - printk(KERN_DEBUG "allocate_pgdat: node %d NODE_DATA %08lx\n", - nid, (unsigned long)NODE_DATA(nid)); -} - -/* * Remap memory allocator */ static unsigned long node_remap_start_pfn[MAX_NUMNODES]; @@ -322,76 +234,9 @@ void __init init_alloc_remap(int nid, u64 start, u64 end) nid, node_pa, node_pa + size, remap_va, remap_va + size); } -static int get_memcfg_numaq(void) -{ -#ifdef CONFIG_X86_NUMAQ - int nid; - - if (numa_off) - return 0; - - if (numaq_numa_init() < 0) { - nodes_clear(numa_nodes_parsed); - remove_all_active_ranges(); - return 0; - } - - for_each_node_mask(nid, numa_nodes_parsed) - node_set_online(nid); - sort_node_map(); - return 1; -#else - return 0; -#endif -} - -static int get_memcfg_from_srat(void) -{ -#ifdef CONFIG_ACPI_NUMA - int nid; - - if (numa_off) - return 0; - - if (x86_acpi_numa_init() < 0) { - nodes_clear(numa_nodes_parsed); - remove_all_active_ranges(); - return 0; - } - - for_each_node_mask(nid, numa_nodes_parsed) - node_set_online(nid); - sort_node_map(); - return 1; -#else - return 0; -#endif -} - -static void get_memcfg_numa(void) -{ - if (get_memcfg_numaq()) - return; - if (get_memcfg_from_srat()) - return; - get_memcfg_numa_flat(); -} - void __init initmem_init(void) { - int nid; - - get_memcfg_numa(); - numa_init_array(); - - for_each_online_node(nid) { - u64 start = (u64)node_start_pfn[nid] << PAGE_SHIFT; - u64 end = min((u64)node_end_pfn[nid] << PAGE_SHIFT, - (u64)max_pfn << PAGE_SHIFT); - - if (start < end) - init_alloc_remap(nid, start, end); - } + x86_numa_init(); #ifdef CONFIG_HIGHMEM highstart_pfn = highend_pfn = max_pfn; @@ -412,81 +257,9 @@ void __init initmem_init(void) printk(KERN_DEBUG "Low memory ends at vaddr %08lx\n", (ulong) pfn_to_kaddr(max_low_pfn)); - for_each_online_node(nid) - allocate_pgdat(nid); printk(KERN_DEBUG "High memory starts at vaddr %08lx\n", (ulong) pfn_to_kaddr(highstart_pfn)); - for_each_online_node(nid) - propagate_e820_map_node(nid); - - for_each_online_node(nid) { - memset(NODE_DATA(nid), 0, sizeof(struct pglist_data)); - NODE_DATA(nid)->node_id = nid; - } setup_bootmem_allocator(); } - -#ifdef CONFIG_MEMORY_HOTPLUG -static int paddr_to_nid(u64 addr) -{ - int nid; - unsigned long pfn = PFN_DOWN(addr); - - for_each_node(nid) - if (node_start_pfn[nid] <= pfn && - pfn < node_end_pfn[nid]) - return nid; - - return -1; -} - -/* - * This function is used to ask node id BEFORE memmap and mem_section's - * initialization (pfn_to_nid() can't be used yet). - * If _PXM is not defined on ACPI's DSDT, node id must be found by this. - */ -int memory_add_physaddr_to_nid(u64 addr) -{ - int nid = paddr_to_nid(addr); - return (nid >= 0) ? nid : 0; -} - -EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid); -#endif - -/* temporary shim, will go away soon */ -int __init numa_add_memblk(int nid, u64 start, u64 end) -{ - unsigned long start_pfn = start >> PAGE_SHIFT; - unsigned long end_pfn = end >> PAGE_SHIFT; - - printk(KERN_DEBUG "nid %d start_pfn %08lx end_pfn %08lx\n", - nid, start_pfn, end_pfn); - - if (start >= (u64)max_pfn << PAGE_SHIFT) { - printk(KERN_INFO "Ignoring SRAT pfns: %08lx - %08lx\n", - start_pfn, end_pfn); - return 0; - } - - node_set_online(nid); - memblock_x86_register_active_regions(nid, start_pfn, - min(end_pfn, max_pfn)); - - if (!node_has_online_mem(nid)) { - node_start_pfn[nid] = start_pfn; - node_end_pfn[nid] = end_pfn; - } else { - node_start_pfn[nid] = min(node_start_pfn[nid], start_pfn); - node_end_pfn[nid] = max(node_end_pfn[nid], end_pfn); - } - return 0; -} - -/* temporary shim, will go away soon */ -void __init numa_set_distance(int from, int to, int distance) -{ - /* nada */ -} |