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author | Ingo Molnar <mingo@kernel.org> | 2014-12-12 08:09:03 (GMT) |
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committer | Ingo Molnar <mingo@kernel.org> | 2014-12-12 08:09:03 (GMT) |
commit | 3459f0d78ffe27a1b341c22eb158b622eaaea3fc (patch) | |
tree | 715b0575eec541d0181876ad367ca5480cdcecf3 /arch/nios2/include/asm/pgalloc.h | |
parent | 9fc81d87420d0d3fd62d5e5529972c0ad9eab9cc (diff) | |
parent | bee2782f30f66898be3f74ad02e4d1f87a969694 (diff) | |
download | linux-3459f0d78ffe27a1b341c22eb158b622eaaea3fc.tar.xz |
Merge branch 'linus' into perf/urgent, to pick up the upstream merged bits
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/nios2/include/asm/pgalloc.h')
-rw-r--r-- | arch/nios2/include/asm/pgalloc.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/arch/nios2/include/asm/pgalloc.h b/arch/nios2/include/asm/pgalloc.h new file mode 100644 index 0000000..6e2985e --- /dev/null +++ b/arch/nios2/include/asm/pgalloc.h @@ -0,0 +1,86 @@ +/* + * 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_NIOS2_PGALLOC_H +#define _ASM_NIOS2_PGALLOC_H + +#include <linux/mm.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); + +extern pgd_t *pgd_alloc(struct mm_struct *mm); + +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 pgtable_t pte_alloc_one(struct mm_struct *mm, + unsigned long address) +{ + struct page *pte; + + pte = alloc_pages(GFP_KERNEL | __GFP_REPEAT, PTE_ORDER); + if (pte) { + if (!pgtable_page_ctor(pte)) { + __free_page(pte); + return NULL; + } + clear_highpage(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, struct page *pte) +{ + pgtable_page_dtor(pte); + __free_pages(pte, PTE_ORDER); +} + +#define __pte_free_tlb(tlb, pte, addr) \ + do { \ + pgtable_page_dtor(pte); \ + tlb_remove_page((tlb), (pte)); \ + } while (0) + +#define check_pgt_cache() do { } while (0) + +#endif /* _ASM_NIOS2_PGALLOC_H */ |