54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
/* $Id: page_io.h,v 1.6 2007/09/05 12:05:52 kostin Exp $
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*
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*/
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#ifndef _E2K_PAGE_IO_H
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#define _E2K_PAGE_IO_H
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#include <linux/init.h>
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#include <linux/mm.h>
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#include <linux/spinlock.h>
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#include <linux/swap.h>
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#include <linux/vmalloc.h>
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#include <asm/types.h>
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#include <asm/e2k_api.h>
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#include <asm/head.h>
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#undef DEBUG_TAG_MODE
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#undef DebugTM
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#define DEBUG_TAG_MODE 0 /* Tag memory */
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#define DebugTM(...) DebugPrint(DEBUG_TAG_MODE ,##__VA_ARGS__)
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#define TAGS_BITS_PER_LONG 4
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#define TAGS_BYTES_PER_PAGE (PAGE_SIZE / sizeof(long) * \
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TAGS_BITS_PER_LONG / 8)
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#define TAGS_PAGES 0xfff
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#define TAGS_READ_PAGES 0xff
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#define TAGS_PAGES_FOR_COMPRESS 0xff
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#define TAGS_READ_PAGES_FOR_COMPRESS 0xff
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struct tags_swap_page_table {
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struct page **pages;
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struct page **read_pages;
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int index; /* last used page */
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int index_read; /* last used page for readpage */
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int size[2];
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spinlock_t lock_pages;
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spinlock_t lock_read_pages;
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};
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extern void tags_swap_init(unsigned type, unsigned long *map);
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extern void e2k_remove_swap(struct swap_info_struct *sis);
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extern void restore_tags_for_data(u64 *, u8 *);
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extern u32 save_tags_from_data(u64 *, u8 *);
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extern void get_page_with_tags(u8 **, u8 *, int *);
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extern u8 *alloc_page_with_tags(void);
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extern void free_page_with_tags(u8 *);
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extern int check_tags(unsigned type, unsigned long beg, unsigned long end);
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#endif //_E2K_PAGE_IO_H
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