This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / include / asm-frv / pgalloc.h

diff --git a/include/asm-frv/pgalloc.h b/include/asm-frv/pgalloc.h
new file mode 100644 (file)
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--- /dev/null
+++ b/include/asm-frv/pgalloc.h
@@ -0,0 +1,64 @@
+/* pgalloc.h: Page allocation routines for FRV
+ *
+ * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Derived from:
+ *     include/asm-m68knommu/pgalloc.h
+ *     include/asm-i386/pgalloc.h
+ */
+#ifndef _ASM_PGALLOC_H
+#define _ASM_PGALLOC_H
+
+#include <linux/config.h>
+#include <asm/setup.h>
+#include <asm/virtconvert.h>
+
+#ifdef CONFIG_MMU
+
+#define pmd_populate_kernel(mm, pmd, pte) __set_pmd(pmd, __pa(pte) | _PAGE_TABLE)
+#define pmd_populate(MM, PMD, PAGE)                                            \
+do {                                                                           \
+       __set_pmd((PMD), page_to_pfn(PAGE) << PAGE_SHIFT | _PAGE_TABLE);        \
+} while(0)
+
+/*
+ * Allocate and free page tables.
+ */
+
+extern pgd_t *pgd_alloc(struct mm_struct *);
+extern void pgd_free(pgd_t *);
+
+extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
+
+extern struct page *pte_alloc_one(struct mm_struct *, unsigned long);
+
+static inline void pte_free_kernel(pte_t *pte)
+{
+       free_page((unsigned long)pte);
+}
+
+static inline void pte_free(struct page *pte)
+{
+       __free_page(pte);
+}
+
+#define __pte_free_tlb(tlb,pte)                tlb_remove_page((tlb),(pte))
+
+/*
+ * allocating and freeing a pmd is trivial: the 1-entry pmd is
+ * inside the pgd, so has no extra memory associated with it.
+ * (In the PAE case we free the pmds as part of the pgd.)
+ */
+#define pmd_alloc_one(mm, addr)                ({ BUG(); ((pmd_t *) 2); })
+#define pmd_free(x)                    do { } while (0)
+#define __pmd_free_tlb(tlb,x)          do { } while (0)
+
+#endif /* CONFIG_MMU */
+
+#endif /* _ASM_PGALLOC_H */