hugetlb.h 2.29 KB
Newer Older
Steve Capper's avatar
Steve Capper committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70
/*
 * arch/arm64/include/asm/hugetlb.h
 *
 * Copyright (C) 2013 Linaro Ltd.
 *
 * Based on arch/x86/include/asm/hugetlb.h
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#ifndef __ASM_HUGETLB_H
#define __ASM_HUGETLB_H

#include <asm-generic/hugetlb.h>
#include <asm/page.h>

static inline pte_t huge_ptep_get(pte_t *ptep)
{
	return *ptep;
}



static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
					  unsigned long addr, unsigned long end,
					  unsigned long floor,
					  unsigned long ceiling)
{
	free_pgd_range(tlb, addr, end, floor, ceiling);
}

static inline int is_hugepage_only_range(struct mm_struct *mm,
					 unsigned long addr, unsigned long len)
{
	return 0;
}

static inline int prepare_hugepage_range(struct file *file,
					 unsigned long addr, unsigned long len)
{
	struct hstate *h = hstate_file(file);
	if (len & ~huge_page_mask(h))
		return -EINVAL;
	if (addr & ~huge_page_mask(h))
		return -EINVAL;
	return 0;
}

static inline int huge_pte_none(pte_t pte)
{
	return pte_none(pte);
}

static inline pte_t huge_pte_wrprotect(pte_t pte)
{
	return pte_wrprotect(pte);
}

static inline void arch_clear_hugepage_flags(struct page *page)
{
	clear_bit(PG_dcache_clean, &page->flags);
}

71 72 73 74 75 76 77 78 79 80 81 82 83 84 85
extern pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma,
				struct page *page, int writable);
#define arch_make_huge_pte arch_make_huge_pte
extern void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
			    pte_t *ptep, pte_t pte);
extern int huge_ptep_set_access_flags(struct vm_area_struct *vma,
				      unsigned long addr, pte_t *ptep,
				      pte_t pte, int dirty);
extern pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
				     unsigned long addr, pte_t *ptep);
extern void huge_ptep_set_wrprotect(struct mm_struct *mm,
				    unsigned long addr, pte_t *ptep);
extern void huge_ptep_clear_flush(struct vm_area_struct *vma,
				  unsigned long addr, pte_t *ptep);

Steve Capper's avatar
Steve Capper committed
86
#endif /* __ASM_HUGETLB_H */