diff options
Diffstat (limited to 'arch/mips/include/asm/hugetlb.h')
| -rw-r--r-- | arch/mips/include/asm/hugetlb.h | 98 |
1 files changed, 20 insertions, 78 deletions
diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h index fe0d15d32660..8c460ce01ffe 100644 --- a/arch/mips/include/asm/hugetlb.h +++ b/arch/mips/include/asm/hugetlb.h @@ -10,55 +10,11 @@ #define __ASM_HUGETLB_H #include <asm/page.h> -#include <asm-generic/hugetlb.h> - - -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) -{ - unsigned long task_size = STACK_TOP; - struct hstate *h = hstate_file(file); - - if (len & ~huge_page_mask(h)) - return -EINVAL; - if (addr & ~huge_page_mask(h)) - return -EINVAL; - if (len > task_size) - return -ENOMEM; - if (task_size - len < addr) - return -EINVAL; - return 0; -} - -static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) -{ -} - -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 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, - pte_t *ptep, pte_t pte) -{ - set_pte_at(mm, addr, ptep, pte); -} +#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, - unsigned long addr, pte_t *ptep) + unsigned long addr, pte_t *ptep, + unsigned long sz) { pte_t clear; pte_t pte = *ptep; @@ -68,29 +24,31 @@ static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, return pte; } -static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, - unsigned long addr, pte_t *ptep) +#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH +static inline pte_t huge_ptep_clear_flush(struct vm_area_struct *vma, + unsigned long addr, pte_t *ptep) { - flush_tlb_page(vma, addr & huge_page_mask(hstate_vma(vma))); + pte_t pte; + unsigned long sz = huge_page_size(hstate_vma(vma)); + + /* + * clear the huge pte entry firstly, so that the other smp threads will + * not get old pte entry after finishing flush_tlb_page and before + * setting new huge pte entry + */ + pte = huge_ptep_get_and_clear(vma->vm_mm, addr, ptep, sz); + flush_tlb_page(vma, addr); + return pte; } +#define __HAVE_ARCH_HUGE_PTE_NONE static inline int huge_pte_none(pte_t pte) { unsigned long val = pte_val(pte) & ~_PAGE_GLOBAL; return !val || (val == (unsigned long)invalid_pte_table); } -static inline pte_t huge_pte_wrprotect(pte_t pte) -{ - return pte_wrprotect(pte); -} - -static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, - unsigned long addr, pte_t *ptep) -{ - ptep_set_wrprotect(mm, addr, ptep); -} - +#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep, pte_t pte, @@ -109,22 +67,6 @@ static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, return changed; } -static inline pte_t huge_ptep_get(pte_t *ptep) -{ - return *ptep; -} - -static inline int arch_prepare_hugepage(struct page *page) -{ - return 0; -} - -static inline void arch_release_hugepage(struct page *page) -{ -} - -static inline void arch_clear_hugepage_flags(struct page *page) -{ -} +#include <asm-generic/hugetlb.h> #endif /* __ASM_HUGETLB_H */ |