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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/mips/include/asm/pgalloc.h | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/mips/include/asm/pgalloc.h')
-rw-r--r-- | arch/mips/include/asm/pgalloc.h | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/arch/mips/include/asm/pgalloc.h b/arch/mips/include/asm/pgalloc.h new file mode 100644 index 00000000..881d18b4 --- /dev/null +++ b/arch/mips/include/asm/pgalloc.h @@ -0,0 +1,132 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 1994 - 2001, 2003 by Ralf Baechle + * Copyright (C) 1999, 2000, 2001 Silicon Graphics, Inc. + */ +#ifndef _ASM_PGALLOC_H +#define _ASM_PGALLOC_H + +#include <linux/highmem.h> +#include <linux/mm.h> +#include <linux/sched.h> + +static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, + pte_t *pte) +{ + set_pmd(pmd, __pmd((unsigned long)pte)); +} + +static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, + pgtable_t pte) +{ + set_pmd(pmd, __pmd((unsigned long)page_address(pte))); +} +#define pmd_pgtable(pmd) pmd_page(pmd) + +/* + * Initialize a new pmd table with invalid pointers. + */ +extern void pmd_init(unsigned long page, unsigned long pagetable); + +#ifndef __PAGETABLE_PMD_FOLDED + +static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) +{ + set_pud(pud, __pud((unsigned long)pmd)); +} +#endif + +/* + * Initialize a new pgd / pmd table with invalid pointers. + */ +extern void pgd_init(unsigned long page); + +static inline pgd_t *pgd_alloc(struct mm_struct *mm) +{ + pgd_t *ret, *init; + + ret = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_ORDER); + if (ret) { + init = pgd_offset(&init_mm, 0UL); + pgd_init((unsigned long)ret); + memcpy(ret + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD, + (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t)); + } + + return ret; +} + +static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) +{ + free_pages((unsigned long)pgd, PGD_ORDER); +} + +static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, + unsigned long address) +{ + pte_t *pte; + + pte = (pte_t *) __get_free_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, PTE_ORDER); + + return pte; +} + +static inline struct page *pte_alloc_one(struct mm_struct *mm, + unsigned long address) +{ + struct page *pte; + + pte = alloc_pages(GFP_KERNEL | __GFP_REPEAT, PTE_ORDER); + if (pte) { + clear_highpage(pte); + pgtable_page_ctor(pte); + } + return pte; +} + +static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) +{ + free_pages((unsigned long)pte, PTE_ORDER); +} + +static inline void pte_free(struct mm_struct *mm, pgtable_t pte) +{ + pgtable_page_dtor(pte); + __free_pages(pte, PTE_ORDER); +} + +#define __pte_free_tlb(tlb,pte,address) \ +do { \ + pgtable_page_dtor(pte); \ + tlb_remove_page((tlb), pte); \ +} while (0) + +#ifndef __PAGETABLE_PMD_FOLDED + +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|__GFP_REPEAT, PMD_ORDER); + if (pmd) + pmd_init((unsigned long)pmd, (unsigned long)invalid_pte_table); + return pmd; +} + +static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) +{ + free_pages((unsigned long)pmd, PMD_ORDER); +} + +#define __pmd_free_tlb(tlb, x, addr) pmd_free((tlb)->mm, x) + +#endif + +#define check_pgt_cache() do { } while (0) + +extern void pagetable_init(void); + +#endif /* _ASM_PGALLOC_H */ |