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authorDavid Howells <dhowells@redhat.com>2009-04-09 20:48:06 -0400
committerDavid Howells <dhowells@redhat.com>2009-04-09 20:48:06 -0400
commite69cc9278831139660cb99bde52908f145338d77 (patch)
treefdc1f002b6036a2220d73c86a253886fa76015dc /arch/frv/include/asm/pgalloc.h
parent187934655fa0637d4ef3967d4543c6dcccf33058 (diff)
FRV: Move to arch/frv/include/asm/
Move arch headers from include/asm-frv/ to arch/frv/include/asm/. Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'arch/frv/include/asm/pgalloc.h')
-rw-r--r--arch/frv/include/asm/pgalloc.h69
1 files changed, 69 insertions, 0 deletions
diff --git a/arch/frv/include/asm/pgalloc.h b/arch/frv/include/asm/pgalloc.h
new file mode 100644
index 000000000000..971e6addb009
--- /dev/null
+++ b/arch/frv/include/asm/pgalloc.h
@@ -0,0 +1,69 @@
1/* pgalloc.h: Page allocation routines for FRV
2 *
3 * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 * Derived from:
12 * include/asm-m68knommu/pgalloc.h
13 * include/asm-i386/pgalloc.h
14 */
15#ifndef _ASM_PGALLOC_H
16#define _ASM_PGALLOC_H
17
18#include <asm/setup.h>
19#include <asm/virtconvert.h>
20
21#ifdef CONFIG_MMU
22
23#define pmd_populate_kernel(mm, pmd, pte) __set_pmd(pmd, __pa(pte) | _PAGE_TABLE)
24#define pmd_populate(MM, PMD, PAGE) \
25do { \
26 __set_pmd((PMD), page_to_pfn(PAGE) << PAGE_SHIFT | _PAGE_TABLE); \
27} while(0)
28#define pmd_pgtable(pmd) pmd_page(pmd)
29
30/*
31 * Allocate and free page tables.
32 */
33
34extern pgd_t *pgd_alloc(struct mm_struct *);
35extern void pgd_free(struct mm_struct *mm, pgd_t *);
36
37extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
38
39extern pgtable_t pte_alloc_one(struct mm_struct *, unsigned long);
40
41static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
42{
43 free_page((unsigned long)pte);
44}
45
46static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
47{
48 pgtable_page_dtor(pte);
49 __free_page(pte);
50}
51
52#define __pte_free_tlb(tlb,pte) \
53do { \
54 pgtable_page_dtor(pte); \
55 tlb_remove_page((tlb),(pte)); \
56} while (0)
57
58/*
59 * allocating and freeing a pmd is trivial: the 1-entry pmd is
60 * inside the pgd, so has no extra memory associated with it.
61 * (In the PAE case we free the pmds as part of the pgd.)
62 */
63#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *) 2); })
64#define pmd_free(mm, x) do { } while (0)
65#define __pmd_free_tlb(tlb,x) do { } while (0)
66
67#endif /* CONFIG_MMU */
68
69#endif /* _ASM_PGALLOC_H */