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author | David S. Miller <davem@davemloft.net> | 2009-04-16 17:35:26 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2009-04-16 17:35:26 -0700 |
commit | a54bfa40fd16aeb90bc556189221576f746f8567 (patch) | |
tree | 176bb7a99ffab5f42f0dd4e9671f335be3f3efa0 /arch/mn10300/include/asm/pgalloc.h | |
parent | fe957c40ec5e2763b9977c565beab3bde3aaf85b (diff) | |
parent | 134ffb4cad92a6aa534e55a9be145bca780a32c1 (diff) |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Diffstat (limited to 'arch/mn10300/include/asm/pgalloc.h')
-rw-r--r-- | arch/mn10300/include/asm/pgalloc.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/arch/mn10300/include/asm/pgalloc.h b/arch/mn10300/include/asm/pgalloc.h new file mode 100644 index 00000000000..ec057e1bd4c --- /dev/null +++ b/arch/mn10300/include/asm/pgalloc.h @@ -0,0 +1,56 @@ +/* MN10300 Page and page table/directory allocation + * + * Copyright (C) 2007 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 Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ +#ifndef _ASM_PGALLOC_H +#define _ASM_PGALLOC_H + +#include <asm/processor.h> +#include <asm/page.h> +#include <linux/threads.h> +#include <linux/mm.h> /* for struct page */ + +struct mm_struct; +struct page; + +/* attach a page table to a PMD entry */ +#define pmd_populate_kernel(mm, pmd, pte) \ + set_pmd(pmd, __pmd(__pa(pte) | _PAGE_TABLE)) + +static inline +void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *pte) +{ + set_pmd(pmd, __pmd((page_to_pfn(pte) << PAGE_SHIFT) | _PAGE_TABLE)); +} +#define pmd_pgtable(pmd) pmd_page(pmd) + +/* + * Allocate and free page tables. + */ + +extern pgd_t *pgd_alloc(struct mm_struct *); +extern void pgd_free(struct mm_struct *, 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(struct mm_struct *mm, pte_t *pte) +{ + free_page((unsigned long) pte); +} + +static inline void pte_free(struct mm_struct *mm, struct page *pte) +{ + __free_page(pte); +} + + +#define __pte_free_tlb(tlb, pte) tlb_remove_page((tlb), (pte)) + +#endif /* _ASM_PGALLOC_H */ |