diff options
Diffstat (limited to 'include/asm-mips/pgtable.h')
| -rw-r--r-- | include/asm-mips/pgtable.h | 46 |
1 files changed, 8 insertions, 38 deletions
diff --git a/include/asm-mips/pgtable.h b/include/asm-mips/pgtable.h index 27d77d981937..d2ee28156743 100644 --- a/include/asm-mips/pgtable.h +++ b/include/asm-mips/pgtable.h @@ -168,19 +168,21 @@ static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *pt #define set_pud(pudptr, pudval) do { *(pudptr) = (pudval); } while(0) #endif -#define PGD_T_LOG2 ffz(~sizeof(pgd_t)) -#define PMD_T_LOG2 ffz(~sizeof(pmd_t)) -#define PTE_T_LOG2 ffz(~sizeof(pte_t)) +#define PGD_T_LOG2 (__builtin_ffs(sizeof(pgd_t)) - 1) +#define PMD_T_LOG2 (__builtin_ffs(sizeof(pmd_t)) - 1) +#define PTE_T_LOG2 (__builtin_ffs(sizeof(pte_t)) - 1) -extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; +/* + * We used to declare this array with size but gcc 3.3 and older are not able + * to find that this expression is a constant, so the size is dropped. + */ +extern pgd_t swapper_pg_dir[]; /* * The following only work if pte_present() is true. * Undefined behaviour if not.. */ -static inline int pte_user(pte_t pte) { BUG(); return 0; } #if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32_R1) -static inline int pte_read(pte_t pte) { return pte.pte_low & _PAGE_READ; } static inline int pte_write(pte_t pte) { return pte.pte_low & _PAGE_WRITE; } static inline int pte_dirty(pte_t pte) { return pte.pte_low & _PAGE_MODIFIED; } static inline int pte_young(pte_t pte) { return pte.pte_low & _PAGE_ACCESSED; } @@ -193,13 +195,6 @@ static inline pte_t pte_wrprotect(pte_t pte) return pte; } -static inline pte_t pte_rdprotect(pte_t pte) -{ - pte.pte_low &= ~(_PAGE_READ | _PAGE_SILENT_READ); - pte.pte_high &= ~_PAGE_SILENT_READ; - return pte; -} - static inline pte_t pte_mkclean(pte_t pte) { pte.pte_low &= ~(_PAGE_MODIFIED | _PAGE_SILENT_WRITE); @@ -224,16 +219,6 @@ static inline pte_t pte_mkwrite(pte_t pte) return pte; } -static inline pte_t pte_mkread(pte_t pte) -{ - pte.pte_low |= _PAGE_READ; - if (pte.pte_low & _PAGE_ACCESSED) { - pte.pte_low |= _PAGE_SILENT_READ; - pte.pte_high |= _PAGE_SILENT_READ; - } - return pte; -} - static inline pte_t pte_mkdirty(pte_t pte) { pte.pte_low |= _PAGE_MODIFIED; @@ -253,7 +238,6 @@ static inline pte_t pte_mkyoung(pte_t pte) return pte; } #else -static inline int pte_read(pte_t pte) { return pte_val(pte) & _PAGE_READ; } static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_WRITE; } static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_MODIFIED; } static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; } @@ -265,12 +249,6 @@ static inline pte_t pte_wrprotect(pte_t pte) return pte; } -static inline pte_t pte_rdprotect(pte_t pte) -{ - pte_val(pte) &= ~(_PAGE_READ | _PAGE_SILENT_READ); - return pte; -} - static inline pte_t pte_mkclean(pte_t pte) { pte_val(pte) &= ~(_PAGE_MODIFIED|_PAGE_SILENT_WRITE); @@ -291,14 +269,6 @@ static inline pte_t pte_mkwrite(pte_t pte) return pte; } -static inline pte_t pte_mkread(pte_t pte) -{ - pte_val(pte) |= _PAGE_READ; - if (pte_val(pte) & _PAGE_ACCESSED) - pte_val(pte) |= _PAGE_SILENT_READ; - return pte; -} - static inline pte_t pte_mkdirty(pte_t pte) { pte_val(pte) |= _PAGE_MODIFIED; |