waterDataDiscreteRateMining dataOperationOfSprayTerminal.h 吉超博 commit at 2020-12-25

waterDataDiscreteRateMining/databaseOperation/dataOperationOfSprayTerminal.h

@@ -159,3 +159,132 @@ static inline void pgd_set(pgd_t *pgdp, pmd_t *pmdp)
 	printk("%s:%d: bad pmd %08lx.\n", __FILE__, __LINE__, pmd_val(e))
 #define pgd_ERROR(e) \
 	printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
+
+
+/*
+ * The following only work if pte_present() is true.
+ * Undefined behaviour if not..
+ */
+static inline int pte_write(pte_t pte)		{ return !(pte_val(pte) & _PAGE_RONLY); }
+static inline int pte_dirty(pte_t pte)		{ return pte_val(pte) & _PAGE_DIRTY; }
+static inline int pte_young(pte_t pte)		{ return pte_val(pte) & _PAGE_ACCESSED; }
+static inline int pte_file(pte_t pte)		{ return pte_val(pte) & _PAGE_FILE; }
+static inline int pte_special(pte_t pte)	{ return 0; }
+
+static inline pte_t pte_wrprotect(pte_t pte)	{ pte_val(pte) |= _PAGE_RONLY; return pte; }
+static inline pte_t pte_mkclean(pte_t pte)	{ pte_val(pte) &= ~_PAGE_DIRTY; return pte; }
+static inline pte_t pte_mkold(pte_t pte)	{ pte_val(pte) &= ~_PAGE_ACCESSED; return pte; }
+static inline pte_t pte_mkwrite(pte_t pte)	{ pte_val(pte) &= ~_PAGE_RONLY; return pte; }
+static inline pte_t pte_mkdirty(pte_t pte)	{ pte_val(pte) |= _PAGE_DIRTY; return pte; }
+static inline pte_t pte_mkyoung(pte_t pte)	{ pte_val(pte) |= _PAGE_ACCESSED; return pte; }
+static inline pte_t pte_mknocache(pte_t pte)
+{
+	pte_val(pte) = (pte_val(pte) & _CACHEMASK040) | m68k_pgtable_cachemode;
+	return pte;
+}
+static inline pte_t pte_mkcache(pte_t pte)
+{
+	pte_val(pte) = (pte_val(pte) & _CACHEMASK040) | m68k_supervisor_cachemode;
+	return pte;
+}
+static inline pte_t pte_mkspecial(pte_t pte)	{ return pte; }
+
+#define PAGE_DIR_OFFSET(tsk,address) pgd_offset((tsk),(address))
+
+#define pgd_index(address)     ((address) >> PGDIR_SHIFT)
+
+/* to find an entry in a page-table-directory */
+static inline pgd_t *pgd_offset(const struct mm_struct *mm,
+				unsigned long address)
+{
+	return mm->pgd + pgd_index(address);
+}
+
+#define swapper_pg_dir kernel_pg_dir
+extern pgd_t kernel_pg_dir[128];
+
+static inline pgd_t *pgd_offset_k(unsigned long address)
+{
+	return kernel_pg_dir + (address >> PGDIR_SHIFT);
+}
+
+
+/* Find an entry in the second-level page table.. */
+static inline pmd_t *pmd_offset(pgd_t *dir, unsigned long address)
+{
+	return (pmd_t *)__pgd_page(*dir) + ((address >> PMD_SHIFT) & (PTRS_PER_PMD-1));
+}
+
+/* Find an entry in the third-level page table.. */
+static inline pte_t *pte_offset_kernel(pmd_t *pmdp, unsigned long address)
+{
+	return (pte_t *)__pmd_page(*pmdp) + ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1));
+}
+
+#define pte_offset_map(pmdp,address) ((pte_t *)__pmd_page(*pmdp) + (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
+#define pte_unmap(pte)		((void)0)
+
+/*
+ * Allocate and free page tables. The xxx_kernel() versions are
+ * used to allocate a kernel page table - this turns on ASN bits
+ * if any.
+ */
+
+/* Prior to calling these routines, the page should have been flushed
+ * from both the cache and ATC, or the CPU might not notice that the
+ * cache setting for the page has been changed. -jskov
+ */
+static inline void nocache_page(void *vaddr)
+{
+	unsigned long addr = (unsigned long)vaddr;
+
+	if (CPU_IS_040_OR_060) {
+		pgd_t *dir;
+		pmd_t *pmdp;
+		pte_t *ptep;
+
+		dir = pgd_offset_k(addr);
+		pmdp = pmd_offset(dir, addr);
+		ptep = pte_offset_kernel(pmdp, addr);
+		*ptep = pte_mknocache(*ptep);
+	}
+}
+
+static inline void cache_page(void *vaddr)
+{
+	unsigned long addr = (unsigned long)vaddr;
+
+	if (CPU_IS_040_OR_060) {
+		pgd_t *dir;
+		pmd_t *pmdp;
+		pte_t *ptep;
+
+		dir = pgd_offset_k(addr);
+		pmdp = pmd_offset(dir, addr);
+		ptep = pte_offset_kernel(pmdp, addr);
+		*ptep = pte_mkcache(*ptep);
+	}
+}
+
+#define PTE_FILE_MAX_BITS	28
+
+static inline unsigned long pte_to_pgoff(pte_t pte)
+{
+	return pte.pte >> 4;
+}
+
+static inline pte_t pgoff_to_pte(unsigned off)
+{
+	pte_t pte = { (off << 4) + _PAGE_FILE };
+	return pte;
+}
+
+/* Encode and de-code a swap entry (must be !pte_none(e) && !pte_present(e)) */
+#define __swp_type(x)		(((x).val >> 4) & 0xff)
+#define __swp_offset(x)		((x).val >> 12)
+#define __swp_entry(type, offset) ((swp_entry_t) { ((type) << 4) | ((offset) << 12) })
+#define __pte_to_swp_entry(pte)	((swp_entry_t) { pte_val(pte) })
+#define __swp_entry_to_pte(x)	((pte_t) { (x).val })
+
+#endif	/* !__ASSEMBLY__ */
+#endif /* _MOTOROLA_PGTABLE_H */