forked from luck/tmp_suning_uos_patched
x86: cleanup numa_64.c
Clean it up before applying more patches. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Thomas Gleixner
Ingo Molnar
parent
e1d9197862
commit
e3cfe529dd
@ -1,7 +1,7 @@
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/*
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/*
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* Generic VM initialization for x86-64 NUMA setups.
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* Copyright 2002,2003 Andi Kleen, SuSE Labs.
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*/
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*/
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/string.h>
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@ -24,6 +24,8 @@
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#endif
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struct pglist_data *node_data[MAX_NUMNODES] __read_mostly;
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EXPORT_SYMBOL(node_data);
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bootmem_data_t plat_node_bdata[MAX_NUMNODES];
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struct memnode memnode;
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@ -31,16 +33,19 @@ struct memnode memnode;
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unsigned char cpu_to_node[NR_CPUS] __read_mostly = {
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[0 ... NR_CPUS-1] = NUMA_NO_NODE
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};
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EXPORT_SYMBOL(cpu_to_node);
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unsigned char apicid_to_node[MAX_LOCAL_APIC] __cpuinitdata = {
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[0 ... MAX_LOCAL_APIC-1] = NUMA_NO_NODE
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[0 ... MAX_LOCAL_APIC-1] = NUMA_NO_NODE
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};
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cpumask_t node_to_cpumask[MAX_NUMNODES] __read_mostly;
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EXPORT_SYMBOL(node_to_cpumask);
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int numa_off __initdata;
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unsigned long __initdata nodemap_addr;
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unsigned long __initdata nodemap_size;
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/*
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* Given a shift value, try to populate memnodemap[]
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* Returns :
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@ -48,12 +53,11 @@ unsigned long __initdata nodemap_size;
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* 0 if memnodmap[] too small (of shift too small)
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* -1 if node overlap or lost ram (shift too big)
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*/
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static int __init
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populate_memnodemap(const struct bootnode *nodes, int numnodes, int shift)
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static int __init populate_memnodemap(const struct bootnode *nodes,
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int numnodes, int shift)
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{
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int i;
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int res = -1;
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unsigned long addr, end;
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int i, res = -1;
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memset(memnodemap, 0xff, memnodemapsize);
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for (i = 0; i < numnodes; i++) {
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@ -70,7 +74,7 @@ populate_memnodemap(const struct bootnode *nodes, int numnodes, int shift)
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addr += (1UL << shift);
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} while (addr < end);
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res = 1;
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}
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}
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return res;
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}
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@ -105,8 +109,8 @@ static int __init allocate_cachealigned_memnodemap(void)
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* The LSB of all start and end addresses in the node map is the value of the
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* maximum possible shift.
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*/
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static int __init
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extract_lsb_from_nodes (const struct bootnode *nodes, int numnodes)
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static int __init extract_lsb_from_nodes(const struct bootnode *nodes,
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int numnodes)
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{
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int i, nodes_used = 0;
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unsigned long start, end;
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@ -141,10 +145,9 @@ int __init compute_hash_shift(struct bootnode *nodes, int numnodes)
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shift);
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if (populate_memnodemap(nodes, numnodes, shift) != 1) {
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printk(KERN_INFO
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"Your memory is not aligned you need to rebuild your kernel "
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"with a bigger NODEMAPSIZE shift=%d\n",
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shift);
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printk(KERN_INFO "Your memory is not aligned you need to "
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"rebuild your kernel with a bigger NODEMAPSIZE "
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"shift=%d\n", shift);
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return -1;
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}
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return shift;
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@ -157,35 +160,37 @@ int early_pfn_to_nid(unsigned long pfn)
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}
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#endif
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static void * __init
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early_node_mem(int nodeid, unsigned long start, unsigned long end,
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unsigned long size)
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static void * __init early_node_mem(int nodeid, unsigned long start,
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unsigned long end, unsigned long size)
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{
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unsigned long mem = find_e820_area(start, end, size);
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void *ptr;
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if (mem != -1L)
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return __va(mem);
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ptr = __alloc_bootmem_nopanic(size,
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SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS));
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if (ptr == NULL) {
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printk(KERN_ERR "Cannot find %lu bytes in node %d\n",
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size, nodeid);
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size, nodeid);
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return NULL;
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}
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return ptr;
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}
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/* Initialize bootmem allocator for a node */
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void __init setup_node_bootmem(int nodeid, unsigned long start, unsigned long end)
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{
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unsigned long start_pfn, end_pfn, bootmap_pages, bootmap_size, bootmap_start;
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unsigned long nodedata_phys;
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void __init setup_node_bootmem(int nodeid, unsigned long start,
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unsigned long end)
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{
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unsigned long start_pfn, end_pfn, bootmap_pages, bootmap_size;
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unsigned long bootmap_start, nodedata_phys;
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void *bootmap;
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const int pgdat_size = round_up(sizeof(pg_data_t), PAGE_SIZE);
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start = round_up(start, ZONE_ALIGN);
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start = round_up(start, ZONE_ALIGN);
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printk(KERN_INFO "Bootmem setup node %d %016lx-%016lx\n", nodeid, start, end);
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printk(KERN_INFO "Bootmem setup node %d %016lx-%016lx\n", nodeid,
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start, end);
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start_pfn = start >> PAGE_SHIFT;
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end_pfn = end >> PAGE_SHIFT;
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@ -201,75 +206,81 @@ void __init setup_node_bootmem(int nodeid, unsigned long start, unsigned long en
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NODE_DATA(nodeid)->node_spanned_pages = end_pfn - start_pfn;
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/* Find a place for the bootmem map */
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bootmap_pages = bootmem_bootmap_pages(end_pfn - start_pfn);
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bootmap_pages = bootmem_bootmap_pages(end_pfn - start_pfn);
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bootmap_start = round_up(nodedata_phys + pgdat_size, PAGE_SIZE);
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bootmap = early_node_mem(nodeid, bootmap_start, end,
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bootmap_pages<<PAGE_SHIFT);
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if (bootmap == NULL) {
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if (nodedata_phys < start || nodedata_phys >= end)
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free_bootmem((unsigned long)node_data[nodeid],pgdat_size);
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free_bootmem((unsigned long)node_data[nodeid],
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pgdat_size);
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node_data[nodeid] = NULL;
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return;
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}
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bootmap_start = __pa(bootmap);
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Dprintk("bootmap start %lu pages %lu\n", bootmap_start, bootmap_pages);
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Dprintk("bootmap start %lu pages %lu\n", bootmap_start, bootmap_pages);
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bootmap_size = init_bootmem_node(NODE_DATA(nodeid),
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bootmap_start >> PAGE_SHIFT,
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start_pfn, end_pfn);
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bootmap_start >> PAGE_SHIFT,
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start_pfn, end_pfn);
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free_bootmem_with_active_regions(nodeid, end);
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reserve_bootmem_node(NODE_DATA(nodeid), nodedata_phys, pgdat_size);
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reserve_bootmem_node(NODE_DATA(nodeid), bootmap_start, bootmap_pages<<PAGE_SHIFT);
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reserve_bootmem_node(NODE_DATA(nodeid), nodedata_phys, pgdat_size);
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reserve_bootmem_node(NODE_DATA(nodeid), bootmap_start,
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bootmap_pages<<PAGE_SHIFT);
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#ifdef CONFIG_ACPI_NUMA
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srat_reserve_add_area(nodeid);
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#endif
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node_set_online(nodeid);
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}
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}
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/* Initialize final allocator for a zone */
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void __init setup_node_zones(int nodeid)
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{
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{
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unsigned long start_pfn, end_pfn, memmapsize, limit;
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start_pfn = node_start_pfn(nodeid);
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end_pfn = node_end_pfn(nodeid);
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start_pfn = node_start_pfn(nodeid);
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end_pfn = node_end_pfn(nodeid);
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Dprintk(KERN_INFO "Setting up memmap for node %d %lx-%lx\n",
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nodeid, start_pfn, end_pfn);
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/* Try to allocate mem_map at end to not fill up precious <4GB
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memory. */
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/*
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* Try to allocate mem_map at end to not fill up precious <4GB
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* memory.
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*/
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memmapsize = sizeof(struct page) * (end_pfn-start_pfn);
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limit = end_pfn << PAGE_SHIFT;
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#ifdef CONFIG_FLAT_NODE_MEM_MAP
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NODE_DATA(nodeid)->node_mem_map =
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__alloc_bootmem_core(NODE_DATA(nodeid)->bdata,
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memmapsize, SMP_CACHE_BYTES,
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round_down(limit - memmapsize, PAGE_SIZE),
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limit);
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NODE_DATA(nodeid)->node_mem_map =
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__alloc_bootmem_core(NODE_DATA(nodeid)->bdata,
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memmapsize, SMP_CACHE_BYTES,
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round_down(limit - memmapsize, PAGE_SIZE),
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limit);
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#endif
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}
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}
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/*
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* There are unfortunately some poorly designed mainboards around that
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* only connect memory to a single CPU. This breaks the 1:1 cpu->node
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* mapping. To avoid this fill in the mapping for all possible CPUs,
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* as the number of CPUs is not known yet. We round robin the existing
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* nodes.
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*/
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void __init numa_init_array(void)
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{
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int rr, i;
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/* There are unfortunately some poorly designed mainboards around
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that only connect memory to a single CPU. This breaks the 1:1 cpu->node
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mapping. To avoid this fill in the mapping for all possible
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CPUs, as the number of CPUs is not known yet.
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We round robin the existing nodes. */
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rr = first_node(node_online_map);
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for (i = 0; i < NR_CPUS; i++) {
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if (cpu_to_node(i) != NUMA_NO_NODE)
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continue;
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numa_set_node(i, rr);
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numa_set_node(i, rr);
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rr = next_node(rr, node_online_map);
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if (rr == MAX_NUMNODES)
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rr = first_node(node_online_map);
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}
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}
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#ifdef CONFIG_NUMA_EMU
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@ -277,15 +288,17 @@ void __init numa_init_array(void)
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char *cmdline __initdata;
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/*
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* Setups up nid to range from addr to addr + size. If the end boundary is
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* greater than max_addr, then max_addr is used instead. The return value is 0
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* if there is additional memory left for allocation past addr and -1 otherwise.
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* addr is adjusted to be at the end of the node.
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* Setups up nid to range from addr to addr + size. If the end
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* boundary is greater than max_addr, then max_addr is used instead.
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* The return value is 0 if there is additional memory left for
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* allocation past addr and -1 otherwise. addr is adjusted to be at
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* the end of the node.
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*/
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static int __init setup_node_range(int nid, struct bootnode *nodes, u64 *addr,
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u64 size, u64 max_addr)
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{
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int ret = 0;
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nodes[nid].start = *addr;
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*addr += size;
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if (*addr >= max_addr) {
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@ -336,6 +349,7 @@ static int __init split_nodes_equally(struct bootnode *nodes, u64 *addr,
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for (i = node_start; i < num_nodes + node_start; i++) {
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u64 end = *addr + size;
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if (i < big)
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end += FAKE_NODE_MIN_SIZE;
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/*
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@ -381,14 +395,9 @@ static int __init split_nodes_by_size(struct bootnode *nodes, u64 *addr,
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static int __init numa_emulation(unsigned long start_pfn, unsigned long end_pfn)
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{
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struct bootnode nodes[MAX_NUMNODES];
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u64 addr = start_pfn << PAGE_SHIFT;
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u64 size, addr = start_pfn << PAGE_SHIFT;
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u64 max_addr = end_pfn << PAGE_SHIFT;
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int num_nodes = 0;
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int coeff_flag;
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int coeff = -1;
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int num = 0;
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u64 size;
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int i;
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int num_nodes = 0, num = 0, coeff_flag, coeff = -1, i;
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memset(&nodes, 0, sizeof(nodes));
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/*
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@ -396,8 +405,9 @@ static int __init numa_emulation(unsigned long start_pfn, unsigned long end_pfn)
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* system RAM into N fake nodes.
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*/
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if (!strchr(cmdline, '*') && !strchr(cmdline, ',')) {
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num_nodes = split_nodes_equally(nodes, &addr, max_addr, 0,
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simple_strtol(cmdline, NULL, 0));
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long n = simple_strtol(cmdline, NULL, 0);
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num_nodes = split_nodes_equally(nodes, &addr, max_addr, 0, n);
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if (num_nodes < 0)
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return num_nodes;
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goto out;
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@ -484,46 +494,47 @@ static int __init numa_emulation(unsigned long start_pfn, unsigned long end_pfn)
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for_each_node_mask(i, node_possible_map) {
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e820_register_active_regions(i, nodes[i].start >> PAGE_SHIFT,
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nodes[i].end >> PAGE_SHIFT);
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setup_node_bootmem(i, nodes[i].start, nodes[i].end);
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setup_node_bootmem(i, nodes[i].start, nodes[i].end);
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}
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acpi_fake_nodes(nodes, num_nodes);
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numa_init_array();
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return 0;
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numa_init_array();
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return 0;
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}
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#endif /* CONFIG_NUMA_EMU */
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void __init numa_initmem_init(unsigned long start_pfn, unsigned long end_pfn)
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{
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{
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int i;
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nodes_clear(node_possible_map);
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#ifdef CONFIG_NUMA_EMU
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if (cmdline && !numa_emulation(start_pfn, end_pfn))
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return;
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return;
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nodes_clear(node_possible_map);
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#endif
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#ifdef CONFIG_ACPI_NUMA
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if (!numa_off && !acpi_scan_nodes(start_pfn << PAGE_SHIFT,
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end_pfn << PAGE_SHIFT))
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return;
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return;
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nodes_clear(node_possible_map);
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#endif
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#ifdef CONFIG_K8_NUMA
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if (!numa_off && !k8_scan_nodes(start_pfn<<PAGE_SHIFT, end_pfn<<PAGE_SHIFT))
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if (!numa_off && !k8_scan_nodes(start_pfn<<PAGE_SHIFT,
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end_pfn<<PAGE_SHIFT))
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return;
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nodes_clear(node_possible_map);
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#endif
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printk(KERN_INFO "%s\n",
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numa_off ? "NUMA turned off" : "No NUMA configuration found");
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printk(KERN_INFO "Faking a node at %016lx-%016lx\n",
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printk(KERN_INFO "Faking a node at %016lx-%016lx\n",
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start_pfn << PAGE_SHIFT,
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end_pfn << PAGE_SHIFT);
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/* setup dummy node covering all memory */
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memnode_shift = 63;
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end_pfn << PAGE_SHIFT);
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/* setup dummy node covering all memory */
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memnode_shift = 63;
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memnodemap = memnode.embedded_map;
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memnodemap[0] = 0;
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nodes_clear(node_online_map);
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@ -539,7 +550,7 @@ void __init numa_initmem_init(unsigned long start_pfn, unsigned long end_pfn)
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__cpuinit void numa_add_cpu(int cpu)
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{
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set_bit(cpu, &node_to_cpumask[cpu_to_node(cpu)]);
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}
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}
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void __cpuinit numa_set_node(int cpu, int node)
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{
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@ -547,20 +558,22 @@ void __cpuinit numa_set_node(int cpu, int node)
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cpu_to_node(cpu) = node;
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}
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unsigned long __init numa_free_all_bootmem(void)
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{
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int i;
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unsigned long __init numa_free_all_bootmem(void)
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{
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unsigned long pages = 0;
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for_each_online_node(i) {
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int i;
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for_each_online_node(i)
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pages += free_all_bootmem_node(NODE_DATA(i));
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}
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return pages;
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}
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}
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void __init paging_init(void)
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{
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int i;
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{
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unsigned long max_zone_pfns[MAX_NR_ZONES];
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int i;
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memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
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max_zone_pfns[ZONE_DMA] = MAX_DMA_PFN;
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max_zone_pfns[ZONE_DMA32] = MAX_DMA32_PFN;
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@ -569,32 +582,30 @@ void __init paging_init(void)
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sparse_memory_present_with_active_regions(MAX_NUMNODES);
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sparse_init();
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for_each_online_node(i) {
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setup_node_zones(i);
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}
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for_each_online_node(i)
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setup_node_zones(i);
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free_area_init_nodes(max_zone_pfns);
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}
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}
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static __init int numa_setup(char *opt)
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{
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{
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if (!opt)
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return -EINVAL;
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if (!strncmp(opt,"off",3))
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if (!strncmp(opt, "off", 3))
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numa_off = 1;
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#ifdef CONFIG_NUMA_EMU
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if (!strncmp(opt, "fake=", 5))
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cmdline = opt + 5;
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#endif
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#ifdef CONFIG_ACPI_NUMA
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if (!strncmp(opt,"noacpi",6))
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acpi_numa = -1;
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if (!strncmp(opt,"hotadd=", 7))
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if (!strncmp(opt, "noacpi", 6))
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acpi_numa = -1;
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if (!strncmp(opt, "hotadd=", 7))
|
||||
hotadd_percent = simple_strtoul(opt+7, NULL, 10);
|
||||
#endif
|
||||
return 0;
|
||||
}
|
||||
|
||||
}
|
||||
early_param("numa", numa_setup);
|
||||
|
||||
/*
|
||||
@ -612,20 +623,18 @@ early_param("numa", numa_setup);
|
||||
void __init init_cpu_to_node(void)
|
||||
{
|
||||
int i;
|
||||
for (i = 0; i < NR_CPUS; i++) {
|
||||
|
||||
for (i = 0; i < NR_CPUS; i++) {
|
||||
u8 apicid = x86_cpu_to_apicid_init[i];
|
||||
|
||||
if (apicid == BAD_APICID)
|
||||
continue;
|
||||
if (apicid_to_node[apicid] == NUMA_NO_NODE)
|
||||
continue;
|
||||
numa_set_node(i,apicid_to_node[apicid]);
|
||||
numa_set_node(i, apicid_to_node[apicid]);
|
||||
}
|
||||
}
|
||||
|
||||
EXPORT_SYMBOL(cpu_to_node);
|
||||
EXPORT_SYMBOL(node_to_cpumask);
|
||||
EXPORT_SYMBOL(node_data);
|
||||
|
||||
#ifdef CONFIG_DISCONTIGMEM
|
||||
/*
|
||||
* Functions to convert PFNs from/to per node page addresses.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user