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powerpc/mm: Move pte related functions together 

Only code movement. No functionality change.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Aneesh Kumar K.V 2016-04-29 23:25:51 +10:00 committed by Michael Ellerman
parent aba480e137
commit 34fbadd8e9
1 changed files with 71 additions and 71 deletions
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142
arch/powerpc/include/asm/book3s/64/pgtable.h
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@ -430,6 +430,77 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
return __pte((pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot));
}
static inline bool pte_user(pte_t pte)
{
return !(pte_val(pte) & _PAGE_PRIVILEGED);
}
/* Encode and de-code a swap entry */
#define MAX_SWAPFILES_CHECK() do { \
BUILD_BUG_ON(MAX_SWAPFILES_SHIFT > SWP_TYPE_BITS); \
/* \
* Don't have overlapping bits with _PAGE_HPTEFLAGS \
* We filter HPTEFLAGS on set_pte. \
*/ \
BUILD_BUG_ON(_PAGE_HPTEFLAGS & (0x1f << _PAGE_BIT_SWAP_TYPE)); \
BUILD_BUG_ON(_PAGE_HPTEFLAGS & _PAGE_SWP_SOFT_DIRTY); \
} while (0)
/*
* on pte we don't need handle RADIX_TREE_EXCEPTIONAL_SHIFT;
*/
#define SWP_TYPE_BITS 5
#define __swp_type(x) (((x).val >> _PAGE_BIT_SWAP_TYPE) \
& ((1UL << SWP_TYPE_BITS) - 1))
#define __swp_offset(x) (((x).val & PTE_RPN_MASK) >> PAGE_SHIFT)
#define __swp_entry(type, offset) ((swp_entry_t) { \
((type) << _PAGE_BIT_SWAP_TYPE) \
| (((offset) << PAGE_SHIFT) & PTE_RPN_MASK)})
/*
* swp_entry_t must be independent of pte bits. We build a swp_entry_t from
* swap type and offset we get from swap and convert that to pte to find a
* matching pte in linux page table.
* Clear bits not found in swap entries here.
*/
#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val((pte)) & ~_PAGE_PTE })
#define __swp_entry_to_pte(x) __pte((x).val | _PAGE_PTE)
#ifdef CONFIG_MEM_SOFT_DIRTY
#define _PAGE_SWP_SOFT_DIRTY (1UL << (SWP_TYPE_BITS + _PAGE_BIT_SWAP_TYPE))
#else
#define _PAGE_SWP_SOFT_DIRTY 0UL
#endif /* CONFIG_MEM_SOFT_DIRTY */
#ifdef CONFIG_HAVE_ARCH_SOFT_DIRTY
static inline pte_t pte_swp_mksoft_dirty(pte_t pte)
{
return __pte(pte_val(pte) | _PAGE_SWP_SOFT_DIRTY);
}
static inline bool pte_swp_soft_dirty(pte_t pte)
{
return !!(pte_val(pte) & _PAGE_SWP_SOFT_DIRTY);
}
static inline pte_t pte_swp_clear_soft_dirty(pte_t pte)
{
return __pte(pte_val(pte) & ~_PAGE_SWP_SOFT_DIRTY);
}
#endif /* CONFIG_HAVE_ARCH_SOFT_DIRTY */
static inline bool check_pte_access(unsigned long access, unsigned long ptev)
{
/*
* This check for _PAGE_RWX and _PAGE_PRESENT bits
*/
if (access & ~ptev)
return false;
/*
* This check for access to privilege space
*/
if ((access & _PAGE_PRIVILEGED) != (ptev & _PAGE_PRIVILEGED))
return false;
return true;
}
#define _PAGE_CACHE_CTL (_PAGE_NON_IDEMPOTENT | _PAGE_TOLERANT)
#define pgprot_noncached pgprot_noncached
@ -576,77 +647,6 @@ extern struct page *pgd_page(pgd_t pgd);
#define pgd_ERROR(e) \
pr_err("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
/* Encode and de-code a swap entry */
#define MAX_SWAPFILES_CHECK() do { \
BUILD_BUG_ON(MAX_SWAPFILES_SHIFT > SWP_TYPE_BITS); \
/* \
* Don't have overlapping bits with _PAGE_HPTEFLAGS \
* We filter HPTEFLAGS on set_pte. \
*/ \
BUILD_BUG_ON(_PAGE_HPTEFLAGS & (0x1f << _PAGE_BIT_SWAP_TYPE)); \
BUILD_BUG_ON(_PAGE_HPTEFLAGS & _PAGE_SWP_SOFT_DIRTY); \
} while (0)
/*
* on pte we don't need handle RADIX_TREE_EXCEPTIONAL_SHIFT;
*/
#define SWP_TYPE_BITS 5
#define __swp_type(x) (((x).val >> _PAGE_BIT_SWAP_TYPE) \
& ((1UL << SWP_TYPE_BITS) - 1))
#define __swp_offset(x) (((x).val & PTE_RPN_MASK) >> PAGE_SHIFT)
#define __swp_entry(type, offset) ((swp_entry_t) { \
((type) << _PAGE_BIT_SWAP_TYPE) \
| (((offset) << PAGE_SHIFT) & PTE_RPN_MASK)})
/*
* swp_entry_t must be independent of pte bits. We build a swp_entry_t from
* swap type and offset we get from swap and convert that to pte to find a
* matching pte in linux page table.
* Clear bits not found in swap entries here.
*/
#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val((pte)) & ~_PAGE_PTE })
#define __swp_entry_to_pte(x) __pte((x).val | _PAGE_PTE)
static inline bool pte_user(pte_t pte)
{
return !(pte_val(pte) & _PAGE_PRIVILEGED);
}
#ifdef CONFIG_MEM_SOFT_DIRTY
#define _PAGE_SWP_SOFT_DIRTY (1UL << (SWP_TYPE_BITS + _PAGE_BIT_SWAP_TYPE))
#else
#define _PAGE_SWP_SOFT_DIRTY 0UL
#endif /* CONFIG_MEM_SOFT_DIRTY */
#ifdef CONFIG_HAVE_ARCH_SOFT_DIRTY
static inline pte_t pte_swp_mksoft_dirty(pte_t pte)
{
return __pte(pte_val(pte) | _PAGE_SWP_SOFT_DIRTY);
}
static inline bool pte_swp_soft_dirty(pte_t pte)
{
return !!(pte_val(pte) & _PAGE_SWP_SOFT_DIRTY);
}
static inline pte_t pte_swp_clear_soft_dirty(pte_t pte)
{
return __pte(pte_val(pte) & ~_PAGE_SWP_SOFT_DIRTY);
}
#endif /* CONFIG_HAVE_ARCH_SOFT_DIRTY */
static inline bool check_pte_access(unsigned long access, unsigned long ptev)
{
/*
* This check for _PAGE_RWX and _PAGE_PRESENT bits
*/
if (access & ~ptev)
return false;
/*
* This check for access to privilege space
*/
if ((access & _PAGE_PRIVILEGED) != (ptev & _PAGE_PRIVILEGED))
return false;
return true;
}
void pgtable_cache_add(unsigned shift, void (*ctor)(void *));
void pgtable_cache_init(void);