patch-2.4.7 linux/include/asm-mips64/pgalloc.h

• Lines: 156
• Date: Wed Jul 4 11:50:39 2001
• Orig file: v2.4.6/linux/include/asm-mips64/pgalloc.h
• Orig date: Mon Apr 23 15:28:07 2001

diff -u --recursive --new-file v2.4.6/linux/include/asm-mips64/pgalloc.h linux/include/asm-mips64/pgalloc.h
@@ -3,8 +3,8 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (C) 1994 - 2000 by Ralf Baechle at alii
- * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
+ * Copyright (C) 1994 - 2001 by Ralf Baechle at alii
+ * Copyright (C) 1999, 2000, 2001 Silicon Graphics, Inc.
  */
 #ifndef _ASM_PGALLOC_H
 #define _ASM_PGALLOC_H
@@ -49,9 +49,7 @@
 
 
 /*
- * Allocate and free page tables. The xxx_kernel() versions are
- * used to allocate a kernel page table - this turns on ASN bits
- * if any.
+ * Allocate and free page tables.
  */
 
 #define pgd_quicklist (current_cpu_data.pgd_quick)
@@ -59,6 +57,9 @@
 #define pte_quicklist (current_cpu_data.pte_quick)
 #define pgtable_cache_size (current_cpu_data.pgtable_cache_sz)
 
+#define pmd_populate(mm, pmd, pte)	pmd_set(pmd, pte)
+#define pgd_populate(mm, pgd, pmd)	pgd_set(pgd, pmd)
+
 extern pgd_t *get_pgd_slow(void);
 
 extern inline pgd_t *get_pgd_fast(void)
@@ -88,8 +89,29 @@
 	free_pages((unsigned long)pgd, 1);
 }
 
+static inline pte_t *pte_alloc_one(struct mm_struct *mm, unsigned long address)
+{
+	pte_t *pte;
+
+	pte = (pte_t *) __get_free_page(GFP_KERNEL);
+	if (pte)
+		clear_page(pte);
+	return pte;
+}
+
+static inline pte_t *pte_alloc_one_fast(struct mm_struct *mm, unsigned long address)
+{
+	unsigned long *ret;
+
+	if ((ret = (unsigned long *)pte_quicklist) != NULL) {
+		pte_quicklist = (unsigned long *)(*ret);
+		ret[0] = ret[1];
+		pgtable_cache_size--;
+	}
+	return (pte_t *)ret;
+}
+
 extern pte_t *get_pte_slow(pmd_t *pmd, unsigned long address_preadjusted);
-extern pte_t *get_pte_kernel_slow(pmd_t *pmd, unsigned long address_preadjusted);
 
 extern inline pte_t *get_pte_fast(void)
 {
@@ -115,8 +137,29 @@
 	free_pages((unsigned long)pte, 0);
 }
 
+static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
+{
+	pmd_t *pmd;
+
+	pmd = (pmd_t *) __get_free_pages(GFP_KERNEL, 1);
+	if (pmd)
+		pmd_init((unsigned long)pmd, (unsigned long)invalid_pte_table);
+	return pmd;
+}
+
+static inline pmd_t *pmd_alloc_one_fast(struct mm_struct *mm, unsigned long address)
+{
+	unsigned long *ret;
+
+	if ((ret = (unsigned long *)pmd_quicklist) != NULL) {
+		pmd_quicklist = (unsigned long *)(*ret);
+		ret[0] = ret[1];
+		pgtable_cache_size--;
+	}
+	return (pmd_t *)ret;
+}
+
 extern pmd_t *get_pmd_slow(pgd_t *pgd, unsigned long address_preadjusted);
-extern pmd_t *get_pmd_kernel_slow(pgd_t *pgd, unsigned long address_preadjusted);
 
 extern inline pmd_t *get_pmd_fast(void)
 {
@@ -144,61 +187,13 @@
 	free_pages((unsigned long)pmd, 1);
 }
 
-extern void __bad_pte(pmd_t *pmd);
-extern void __bad_pte_kernel(pmd_t *pmd);
-extern void __bad_pmd(pgd_t *pgd);
-
 #define pte_free(pte)           free_pte_fast(pte)
 #define pmd_free(pte)           free_pmd_fast(pte)
 #define pgd_free(pgd)           free_pgd_fast(pgd)
 #define pgd_alloc(mm)           get_pgd_fast()
 
-extern inline pte_t * pte_alloc(pmd_t * pmd, unsigned long address)
-{
-	address = (address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1);
-
-	if (pmd_none(*pmd)) {
-		pte_t *page = get_pte_fast();
-		if (page) {
-			pmd_val(*pmd) = (unsigned long) page;
-			return page + address;
-		}
-		return get_pte_slow(pmd, address);
-	}
-	if (pmd_bad(*pmd)) {
-		__bad_pte(pmd);
-		return NULL;
-	}
-	return (pte_t *) pmd_page(*pmd) + address;
-}
-
-extern inline pmd_t *pmd_alloc(pgd_t * pgd, unsigned long address)
-{
-	address = (address >> PMD_SHIFT) & (PTRS_PER_PMD - 1);
-	if (pgd_none(*pgd)) {
-		pmd_t *page = get_pmd_fast();
-
-		if (!page)
-			return get_pmd_slow(pgd, address);
-		pgd_set(pgd, page);
-		return page + address;
-	}
-	if (pgd_bad(*pgd)) {
-		__bad_pmd(pgd);
-		return NULL;
-	}
-	return (pmd_t *) pgd_page(*pgd) + address;
-}
-
 extern pte_t kptbl[(PAGE_SIZE<<KPTBL_PAGE_ORDER)/sizeof(pte_t)];
 extern pmd_t kpmdtbl[PTRS_PER_PMD];
-
-#define pmd_alloc_kernel(d,a)	(pmd_t *)kpmdtbl
-
-extern inline pte_t * pte_alloc_kernel(pmd_t * pmd, unsigned long address)
-{
-	return (kptbl + (address >> PAGE_SHIFT));
-}
 
 extern int do_check_pgt_cache(int, int);