http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/asm-i386/mmzone.h

/* * Written by Pat Gaughen (gone@us.ibm.com) Mar 2002 * */ #ifndef _ASM_MMZONE_H_ #define _ASM_MMZONE_H_ #include <asm/smp.h> #ifdef CONFIG_NUMA extern struct pglist_data *node_data[]; #define NODE_DATA(nid) (node_data[nid]) #ifdef CONFIG_X86_NUMAQ #include <asm/numaq.h> #else /* summit or generic arch */ #include <asm/srat.h> #endif extern int get_memcfg_numa_flat(void ); /* * This allows any one NUMA architecture to be compiled * for, and still fall back to the flat function if it * fails. */ static inline void get_memcfg_numa(void) { #ifdef CONFIG_X86_NUMAQ if (get_memcfg_numaq()) return; #elif defined(CONFIG_ACPI_SRAT) if (get_memcfg_from_srat()) return; #endif get_memcfg_numa_flat(); } extern int early_pfn_to_nid(unsigned long pfn); #else /* !CONFIG_NUMA */ #define get_memcfg_numa get_memcfg_numa_flat #define get_zholes_size(n) (0) #endif /* CONFIG_NUMA */ #ifdef CONFIG_DISCONTIGMEM /* * generic node memory support, the following assumptions apply: * * 1) memory comes in 256Mb contigious chunks which are either present or not * 2) we will not have more than 64Gb in total * * for now assume that 64Gb is max amount of RAM for whole system * 64Gb / 4096bytes/page = 16777216 pages */ #define MAX_NR_PAGES 16777216 #define MAX_ELEMENTS 256 #define PAGES_PER_ELEMENT (MAX_NR_PAGES/MAX_ELEMENTS) extern s8 physnode_map[]; static inline int pfn_to_nid(unsigned long pfn) { #ifdef CONFIG_NUMA return((int) physnode_map[(pfn) / PAGES_PER_ELEMENT]); #else return 0; #endif } #define node_localnr(pfn, nid) ((pfn) - node_data[nid]->node_start_pfn) /* * Following are macros that each numa implmentation must define. */ #define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn) #define node_end_pfn(nid) \ ({ \ pg_data_t *__pgdat = NODE_DATA(nid); \ __pgdat->node_start_pfn + __pgdat->node_spanned_pages; \ }) /* XXX: FIXME -- wli */ #define kern_addr_valid(kaddr) (0) #define pfn_to_page(pfn) \ ({ \ unsigned long __pfn = pfn; \ int __node = pfn_to_nid(__pfn); \ &NODE_DATA(__node)->node_mem_map[node_localnr(__pfn,__node)]; \ }) #define page_to_pfn(pg) \ ({ \ struct page *__page = pg; \ struct zone *__zone = page_zone(__page); \ (unsigned long)(__page - __zone->zone_mem_map) \ + __zone->zone_start_pfn; \ }) #ifdef CONFIG_X86_NUMAQ /* we have contiguous memory on NUMA-Q */ #define pfn_valid(pfn) ((pfn) < num_physpages) #else static inline int pfn_valid(int pfn) { int nid = pfn_to_nid(pfn); if (nid >= 0) return (pfn < node_end_pfn(nid)); return 0; } #endif /* CONFIG_X86_NUMAQ */ #endif /* CONFIG_DISCONTIGMEM */ #ifdef CONFIG_NEED_MULTIPLE_NODES /* * Following are macros that are specific to this numa platform. */ #define reserve_bootmem(addr, size) \ reserve_bootmem_node(NODE_DATA(0), (addr), (size)) #define alloc_bootmem(x) \ __alloc_bootmem_node(NODE_DATA(0), (x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS)) #define alloc_bootmem_low(x) \ __alloc_bootmem_node(NODE_DATA(0), (x), SMP_CACHE_BYTES, 0) #define alloc_bootmem_pages(x) \ __alloc_bootmem_node(NODE_DATA(0), (x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS)) #define alloc_bootmem_low_pages(x) \ __alloc_bootmem_node(NODE_DATA(0), (x), PAGE_SIZE, 0) #define alloc_bootmem_node(ignore, x) \ __alloc_bootmem_node(NODE_DATA(0), (x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS)) #define alloc_bootmem_pages_node(ignore, x) \ __alloc_bootmem_node(NODE_DATA(0), (x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS)) #define alloc_bootmem_low_pages_node(ignore, x) \ __alloc_bootmem_node(NODE_DATA(0), (x), PAGE_SIZE, 0) #endif /* CONFIG_NEED_MULTIPLE_NODES */ #endif /* _ASM_MMZONE_H_ */