efHeterogeneousSynchronization normalDataOperation.h 韩正义 commit at 2021-03-22

efHeterogeneousSynchronization/databaseOperation/normalDataOperation.h

@@ -316,3 +316,64 @@ extern inline pte_t * pte_offset_kernel(pmd_t * dir, unsigned long address)
 		+ ((address >> PAGE_SHIFT) & (PTRS_PER_PAGE - 1));
 	smp_read_barrier_depends(); /* see above */
 	return ret;
+}
+
+#define pte_offset_map(dir,addr)	pte_offset_kernel((dir),(addr))
+#define pte_unmap(pte)			do { } while (0)
+
+extern pgd_t swapper_pg_dir[1024];
+
+/*
+ * The Alpha doesn't have any external MMU info:  the kernel page
+ * tables contain all the necessary information.
+ */
+extern inline void update_mmu_cache(struct vm_area_struct * vma,
+	unsigned long address, pte_t *ptep)
+{
+}
+
+/*
+ * Non-present pages:  high 24 bits are offset, next 8 bits type,
+ * low 32 bits zero.
+ */
+extern inline pte_t mk_swap_pte(unsigned long type, unsigned long offset)
+{ pte_t pte; pte_val(pte) = (type << 32) | (offset << 40); return pte; }
+
+#define __swp_type(x)		(((x).val >> 32) & 0xff)
+#define __swp_offset(x)		((x).val >> 40)
+#define __swp_entry(type, off)	((swp_entry_t) { pte_val(mk_swap_pte((type), (off))) })
+#define __pte_to_swp_entry(pte)	((swp_entry_t) { pte_val(pte) })
+#define __swp_entry_to_pte(x)	((pte_t) { (x).val })
+
+#define pte_to_pgoff(pte)	(pte_val(pte) >> 32)
+#define pgoff_to_pte(off)	((pte_t) { ((off) << 32) | _PAGE_FILE })
+
+#define PTE_FILE_MAX_BITS	32
+
+#ifndef CONFIG_DISCONTIGMEM
+#define kern_addr_valid(addr)	(1)
+#endif
+
+#define io_remap_pfn_range(vma, start, pfn, size, prot)	\
+		remap_pfn_range(vma, start, pfn, size, prot)
+
+#define pte_ERROR(e) \
+	printk("%s:%d: bad pte %016lx.\n", __FILE__, __LINE__, pte_val(e))
+#define pmd_ERROR(e) \
+	printk("%s:%d: bad pmd %016lx.\n", __FILE__, __LINE__, pmd_val(e))
+#define pgd_ERROR(e) \
+	printk("%s:%d: bad pgd %016lx.\n", __FILE__, __LINE__, pgd_val(e))
+
+extern void paging_init(void);
+
+#include <asm-generic/pgtable.h>
+
+/*
+ * No page table caches to initialise
+ */
+#define pgtable_cache_init()	do { } while (0)
+
+/* We have our own get_unmapped_area to cope with ADDR_LIMIT_32BIT.  */
+#define HAVE_ARCH_UNMAPPED_AREA
+
+#endif /* _ALPHA_PGTABLE_H */