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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-frv/pgalloc.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-frv/pgalloc.h')
-rw-r--r--include/asm-frv/pgalloc.h64
1 files changed, 64 insertions, 0 deletions
diff --git a/include/asm-frv/pgalloc.h b/include/asm-frv/pgalloc.h
new file mode 100644
index 000000000000..1bd28f41bfa8
--- /dev/null
+++ b/include/asm-frv/pgalloc.h
@@ -0,0 +1,64 @@
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 <linux/config.h>
19#include <asm/setup.h>
20#include <asm/virtconvert.h>
21
22#ifdef CONFIG_MMU
23
24#define pmd_populate_kernel(mm, pmd, pte) __set_pmd(pmd, __pa(pte) | _PAGE_TABLE)
25#define pmd_populate(MM, PMD, PAGE) \
26do { \
27 __set_pmd((PMD), page_to_pfn(PAGE) << PAGE_SHIFT | _PAGE_TABLE); \
28} while(0)
29
30/*
31 * Allocate and free page tables.
32 */
33
34extern pgd_t *pgd_alloc(struct mm_struct *);
35extern void pgd_free(pgd_t *);
36
37extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
38
39extern struct page *pte_alloc_one(struct mm_struct *, unsigned long);
40
41static inline void pte_free_kernel(pte_t *pte)
42{
43 free_page((unsigned long)pte);
44}
45
46static inline void pte_free(struct page *pte)
47{
48 __free_page(pte);
49}
50
51#define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
52
53/*
54 * allocating and freeing a pmd is trivial: the 1-entry pmd is
55 * inside the pgd, so has no extra memory associated with it.
56 * (In the PAE case we free the pmds as part of the pgd.)
57 */
58#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *) 2); })
59#define pmd_free(x) do { } while (0)
60#define __pmd_free_tlb(tlb,x) do { } while (0)
61
62#endif /* CONFIG_MMU */
63
64#endif /* _ASM_PGALLOC_H */