98 строки
2.7 KiB
C
98 строки
2.7 KiB
C
/*
|
|
* 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/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);
|
|
}
|
|
|
|
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);
|
|
extern void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
|
|
pte_t *ptep, unsigned long sz);
|
|
#define huge_pte_clear huge_pte_clear
|
|
extern void set_huge_swap_pte_at(struct mm_struct *mm, unsigned long addr,
|
|
pte_t *ptep, pte_t pte, unsigned long sz);
|
|
#define set_huge_swap_pte_at set_huge_swap_pte_at
|
|
|
|
#include <asm-generic/hugetlb.h>
|
|
|
|
#ifdef CONFIG_ARCH_HAS_GIGANTIC_PAGE
|
|
static inline bool gigantic_page_supported(void) { return true; }
|
|
#endif
|
|
|
|
#endif /* __ASM_HUGETLB_H */
|