bootmem.h
上传用户:lgb322
上传日期:2013-02-24
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文件大小:2k
- /*
- * Discontiguous memory support, Kanoj Sarcar, SGI, Nov 1999
- */
- #ifndef _LINUX_BOOTMEM_H
- #define _LINUX_BOOTMEM_H
- #include <asm/pgtable.h>
- #include <asm/dma.h>
- #include <linux/cache.h>
- #include <linux/init.h>
- #include <linux/mmzone.h>
- /*
- * simple boot-time physical memory area allocator.
- */
- extern unsigned long max_low_pfn;
- extern unsigned long min_low_pfn;
- /*
- * node_bootmem_map is a map pointer - the bits represent all physical
- * memory pages (including holes) on the node.
- */
- typedef struct bootmem_data {
- unsigned long node_boot_start;
- unsigned long node_low_pfn;
- void *node_bootmem_map;
- unsigned long last_offset;
- unsigned long last_pos;
- } bootmem_data_t;
- extern unsigned long __init bootmem_bootmap_pages (unsigned long);
- extern unsigned long __init init_bootmem (unsigned long addr, unsigned long memend);
- extern void __init reserve_bootmem (unsigned long addr, unsigned long size);
- extern void __init free_bootmem (unsigned long addr, unsigned long size);
- extern void * __init __alloc_bootmem (unsigned long size, unsigned long align, unsigned long goal);
- #define alloc_bootmem(x)
- __alloc_bootmem((x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
- #define alloc_bootmem_low(x)
- __alloc_bootmem((x), SMP_CACHE_BYTES, 0)
- #define alloc_bootmem_pages(x)
- __alloc_bootmem((x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
- #define alloc_bootmem_low_pages(x)
- __alloc_bootmem((x), PAGE_SIZE, 0)
- extern unsigned long __init free_all_bootmem (void);
- extern unsigned long __init init_bootmem_node (pg_data_t *pgdat, unsigned long freepfn, unsigned long startpfn, unsigned long endpfn);
- extern void __init reserve_bootmem_node (pg_data_t *pgdat, unsigned long physaddr, unsigned long size);
- extern void __init free_bootmem_node (pg_data_t *pgdat, unsigned long addr, unsigned long size);
- extern unsigned long __init free_all_bootmem_node (pg_data_t *pgdat);
- extern void * __init __alloc_bootmem_node (pg_data_t *pgdat, unsigned long size, unsigned long align, unsigned long goal);
- #define alloc_bootmem_node(pgdat, x)
- __alloc_bootmem_node((pgdat), (x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
- #define alloc_bootmem_pages_node(pgdat, x)
- __alloc_bootmem_node((pgdat), (x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
- #define alloc_bootmem_low_pages_node(pgdat, x)
- __alloc_bootmem_node((pgdat), (x), PAGE_SIZE, 0)
- #endif /* _LINUX_BOOTMEM_H */