diff options
Diffstat (limited to 'include/asm-generic/pgtable.h')
| -rw-r--r-- | include/asm-generic/pgtable.h | 208 |
1 files changed, 184 insertions, 24 deletions
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h index ff4947b7a97..701beab27aa 100644 --- a/include/asm-generic/pgtable.h +++ b/include/asm-generic/pgtable.h @@ -87,7 +87,7 @@ static inline pmd_t pmdp_get_and_clear(struct mm_struct *mm, pmd_t *pmdp) { pmd_t pmd = *pmdp; - pmd_clear(mm, address, pmdp); + pmd_clear(pmdp); return pmd; } #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ @@ -162,6 +162,19 @@ extern void pmdp_splitting_flush(struct vm_area_struct *vma, unsigned long address, pmd_t *pmdp); #endif +#ifndef __HAVE_ARCH_PGTABLE_DEPOSIT +extern void pgtable_trans_huge_deposit(struct mm_struct *mm, pgtable_t pgtable); +#endif + +#ifndef __HAVE_ARCH_PGTABLE_WITHDRAW +extern pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm); +#endif + +#ifndef __HAVE_ARCH_PMDP_INVALIDATE +extern void pmdp_invalidate(struct vm_area_struct *vma, unsigned long address, + pmd_t *pmdp); +#endif + #ifndef __HAVE_ARCH_PTE_SAME static inline int pte_same(pte_t pte_a, pte_t pte_b) { @@ -206,6 +219,10 @@ static inline int pmd_same(pmd_t pmd_a, pmd_t pmd_b) #define move_pte(pte, prot, old_addr, new_addr) (pte) #endif +#ifndef pte_accessible +# define pte_accessible(pte) ((void)(pte),1) +#endif + #ifndef flush_tlb_fix_spurious_fault #define flush_tlb_fix_spurious_fault(vma, address) flush_tlb_page(vma, address) #endif @@ -381,48 +398,85 @@ static inline void ptep_modify_prot_commit(struct mm_struct *mm, #ifndef __HAVE_PFNMAP_TRACKING /* - * Interface that can be used by architecture code to keep track of - * memory type of pfn mappings (remap_pfn_range, vm_insert_pfn) - * - * track_pfn_vma_new is called when a _new_ pfn mapping is being established - * for physical range indicated by pfn and size. + * Interfaces that can be used by architecture code to keep track of + * memory type of pfn mappings specified by the remap_pfn_range, + * vm_insert_pfn. + */ + +/* + * track_pfn_remap is called when a _new_ pfn mapping is being established + * by remap_pfn_range() for physical range indicated by pfn and size. */ -static inline int track_pfn_vma_new(struct vm_area_struct *vma, pgprot_t *prot, - unsigned long pfn, unsigned long size) +static inline int track_pfn_remap(struct vm_area_struct *vma, pgprot_t *prot, + unsigned long pfn, unsigned long addr, + unsigned long size) { return 0; } /* - * Interface that can be used by architecture code to keep track of - * memory type of pfn mappings (remap_pfn_range, vm_insert_pfn) - * - * track_pfn_vma_copy is called when vma that is covering the pfnmap gets + * track_pfn_insert is called when a _new_ single pfn is established + * by vm_insert_pfn(). + */ +static inline int track_pfn_insert(struct vm_area_struct *vma, pgprot_t *prot, + unsigned long pfn) +{ + return 0; +} + +/* + * track_pfn_copy is called when vma that is covering the pfnmap gets * copied through copy_page_range(). */ -static inline int track_pfn_vma_copy(struct vm_area_struct *vma) +static inline int track_pfn_copy(struct vm_area_struct *vma) { return 0; } /* - * Interface that can be used by architecture code to keep track of - * memory type of pfn mappings (remap_pfn_range, vm_insert_pfn) - * * untrack_pfn_vma is called while unmapping a pfnmap for a region. * untrack can be called for a specific region indicated by pfn and size or - * can be for the entire vma (in which case size can be zero). + * can be for the entire vma (in which case pfn, size are zero). */ -static inline void untrack_pfn_vma(struct vm_area_struct *vma, - unsigned long pfn, unsigned long size) +static inline void untrack_pfn(struct vm_area_struct *vma, + unsigned long pfn, unsigned long size) { } #else -extern int track_pfn_vma_new(struct vm_area_struct *vma, pgprot_t *prot, - unsigned long pfn, unsigned long size); -extern int track_pfn_vma_copy(struct vm_area_struct *vma); -extern void untrack_pfn_vma(struct vm_area_struct *vma, unsigned long pfn, - unsigned long size); +extern int track_pfn_remap(struct vm_area_struct *vma, pgprot_t *prot, + unsigned long pfn, unsigned long addr, + unsigned long size); +extern int track_pfn_insert(struct vm_area_struct *vma, pgprot_t *prot, + unsigned long pfn); +extern int track_pfn_copy(struct vm_area_struct *vma); +extern void untrack_pfn(struct vm_area_struct *vma, unsigned long pfn, + unsigned long size); +#endif + +#ifdef __HAVE_COLOR_ZERO_PAGE +static inline int is_zero_pfn(unsigned long pfn) +{ + extern unsigned long zero_pfn; + unsigned long offset_from_zero_pfn = pfn - zero_pfn; + return offset_from_zero_pfn <= (zero_page_mask >> PAGE_SHIFT); +} + +static inline unsigned long my_zero_pfn(unsigned long addr) +{ + return page_to_pfn(ZERO_PAGE(addr)); +} +#else +static inline int is_zero_pfn(unsigned long pfn) +{ + extern unsigned long zero_pfn; + return pfn == zero_pfn; +} + +static inline unsigned long my_zero_pfn(unsigned long addr) +{ + extern unsigned long zero_pfn; + return zero_pfn; +} #endif #ifdef CONFIG_MMU @@ -530,6 +584,112 @@ static inline int pmd_trans_unstable(pmd_t *pmd) #endif } +#ifdef CONFIG_NUMA_BALANCING +#ifdef CONFIG_ARCH_USES_NUMA_PROT_NONE +/* + * _PAGE_NUMA works identical to _PAGE_PROTNONE (it's actually the + * same bit too). It's set only when _PAGE_PRESET is not set and it's + * never set if _PAGE_PRESENT is set. + * + * pte/pmd_present() returns true if pte/pmd_numa returns true. Page + * fault triggers on those regions if pte/pmd_numa returns true + * (because _PAGE_PRESENT is not set). + */ +#ifndef pte_numa +static inline int pte_numa(pte_t pte) +{ + return (pte_flags(pte) & + (_PAGE_NUMA|_PAGE_PRESENT)) == _PAGE_NUMA; +} +#endif + +#ifndef pmd_numa +static inline int pmd_numa(pmd_t pmd) +{ + return (pmd_flags(pmd) & + (_PAGE_NUMA|_PAGE_PRESENT)) == _PAGE_NUMA; +} +#endif + +/* + * pte/pmd_mknuma sets the _PAGE_ACCESSED bitflag automatically + * because they're called by the NUMA hinting minor page fault. If we + * wouldn't set the _PAGE_ACCESSED bitflag here, the TLB miss handler + * would be forced to set it later while filling the TLB after we + * return to userland. That would trigger a second write to memory + * that we optimize away by setting _PAGE_ACCESSED here. + */ +#ifndef pte_mknonnuma +static inline pte_t pte_mknonnuma(pte_t pte) +{ + pte = pte_clear_flags(pte, _PAGE_NUMA); + return pte_set_flags(pte, _PAGE_PRESENT|_PAGE_ACCESSED); +} +#endif + +#ifndef pmd_mknonnuma +static inline pmd_t pmd_mknonnuma(pmd_t pmd) +{ + pmd = pmd_clear_flags(pmd, _PAGE_NUMA); + return pmd_set_flags(pmd, _PAGE_PRESENT|_PAGE_ACCESSED); +} +#endif + +#ifndef pte_mknuma +static inline pte_t pte_mknuma(pte_t pte) +{ + pte = pte_set_flags(pte, _PAGE_NUMA); + return pte_clear_flags(pte, _PAGE_PRESENT); +} +#endif + +#ifndef pmd_mknuma +static inline pmd_t pmd_mknuma(pmd_t pmd) +{ + pmd = pmd_set_flags(pmd, _PAGE_NUMA); + return pmd_clear_flags(pmd, _PAGE_PRESENT); +} +#endif +#else +extern int pte_numa(pte_t pte); +extern int pmd_numa(pmd_t pmd); +extern pte_t pte_mknonnuma(pte_t pte); +extern pmd_t pmd_mknonnuma(pmd_t pmd); +extern pte_t pte_mknuma(pte_t pte); +extern pmd_t pmd_mknuma(pmd_t pmd); +#endif /* CONFIG_ARCH_USES_NUMA_PROT_NONE */ +#else +static inline int pmd_numa(pmd_t pmd) +{ + return 0; +} + +static inline int pte_numa(pte_t pte) +{ + return 0; +} + +static inline pte_t pte_mknonnuma(pte_t pte) +{ + return pte; +} + +static inline pmd_t pmd_mknonnuma(pmd_t pmd) +{ + return pmd; +} + +static inline pte_t pte_mknuma(pte_t pte) +{ + return pte; +} + +static inline pmd_t pmd_mknuma(pmd_t pmd) +{ + return pmd; +} +#endif /* CONFIG_NUMA_BALANCING */ + #endif /* CONFIG_MMU */ #endif /* !__ASSEMBLY__ */ |