diff options
Diffstat (limited to 'include/asm-um')
| -rw-r--r-- | include/asm-um/auxvec.h | 4 | ||||
| -rw-r--r-- | include/asm-um/futex.h | 53 | ||||
| -rw-r--r-- | include/asm-um/hdreg.h | 6 | ||||
| -rw-r--r-- | include/asm-um/mmu_context.h | 10 | ||||
| -rw-r--r-- | include/asm-um/page.h | 16 | ||||
| -rw-r--r-- | include/asm-um/pgalloc.h | 12 | ||||
| -rw-r--r-- | include/asm-um/pgtable-2level.h | 27 | ||||
| -rw-r--r-- | include/asm-um/pgtable-3level.h | 45 | ||||
| -rw-r--r-- | include/asm-um/pgtable.h | 54 |
9 files changed, 129 insertions, 98 deletions
diff --git a/include/asm-um/auxvec.h b/include/asm-um/auxvec.h new file mode 100644 index 00000000000..1e5e1c2fc9b --- /dev/null +++ b/include/asm-um/auxvec.h @@ -0,0 +1,4 @@ +#ifndef __UM_AUXVEC_H +#define __UM_AUXVEC_H + +#endif diff --git a/include/asm-um/futex.h b/include/asm-um/futex.h new file mode 100644 index 00000000000..2cac5ecd9d0 --- /dev/null +++ b/include/asm-um/futex.h @@ -0,0 +1,53 @@ +#ifndef _ASM_FUTEX_H +#define _ASM_FUTEX_H + +#ifdef __KERNEL__ + +#include <linux/futex.h> +#include <asm/errno.h> +#include <asm/uaccess.h> + +static inline int +futex_atomic_op_inuser (int encoded_op, int __user *uaddr) +{ + int op = (encoded_op >> 28) & 7; + int cmp = (encoded_op >> 24) & 15; + int oparg = (encoded_op << 8) >> 20; + int cmparg = (encoded_op << 20) >> 20; + int oldval = 0, ret, tem; + if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28)) + oparg = 1 << oparg; + + if (! access_ok (VERIFY_WRITE, uaddr, sizeof(int))) + return -EFAULT; + + inc_preempt_count(); + + switch (op) { + case FUTEX_OP_SET: + case FUTEX_OP_ADD: + case FUTEX_OP_OR: + case FUTEX_OP_ANDN: + case FUTEX_OP_XOR: + default: + ret = -ENOSYS; + } + + dec_preempt_count(); + + if (!ret) { + switch (cmp) { + case FUTEX_OP_CMP_EQ: ret = (oldval == cmparg); break; + case FUTEX_OP_CMP_NE: ret = (oldval != cmparg); break; + case FUTEX_OP_CMP_LT: ret = (oldval < cmparg); break; + case FUTEX_OP_CMP_GE: ret = (oldval >= cmparg); break; + case FUTEX_OP_CMP_LE: ret = (oldval <= cmparg); break; + case FUTEX_OP_CMP_GT: ret = (oldval > cmparg); break; + default: ret = -ENOSYS; + } + } + return ret; +} + +#endif +#endif diff --git a/include/asm-um/hdreg.h b/include/asm-um/hdreg.h deleted file mode 100644 index cf6363abcab..00000000000 --- a/include/asm-um/hdreg.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef __UM_HDREG_H -#define __UM_HDREG_H - -#include "asm/arch/hdreg.h" - -#endif diff --git a/include/asm-um/mmu_context.h b/include/asm-um/mmu_context.h index 095bb627b96..2edb4f1f789 100644 --- a/include/asm-um/mmu_context.h +++ b/include/asm-um/mmu_context.h @@ -20,7 +20,15 @@ extern void force_flush_all(void); static inline void activate_mm(struct mm_struct *old, struct mm_struct *new) { - if (old != new) + /* + * This is called by fs/exec.c and fs/aio.c. In the first case, for an + * exec, we don't need to do anything as we're called from userspace + * and thus going to use a new host PID. In the second, we're called + * from a kernel thread, and thus need to go doing the mmap's on the + * host. Since they're very expensive, we want to avoid that as far as + * possible. + */ + if (old != new && (current->flags & PF_BORROWED_MM)) force_flush_all(); } diff --git a/include/asm-um/page.h b/include/asm-um/page.h index f58aedadeb4..bd850a24918 100644 --- a/include/asm-um/page.h +++ b/include/asm-um/page.h @@ -116,24 +116,12 @@ extern void *to_virt(unsigned long phys); #define pfn_valid(pfn) ((pfn) < max_mapnr) #define virt_addr_valid(v) pfn_valid(phys_to_pfn(__pa(v))) -/* Pure 2^n version of get_order */ -static __inline__ int get_order(unsigned long size) -{ - int order; - - size = (size-1) >> (PAGE_SHIFT-1); - order = -1; - do { - size >>= 1; - order++; - } while (size); - return order; -} - extern struct page *arch_validate(struct page *page, int mask, int order); #define HAVE_ARCH_VALIDATE extern void arch_free_page(struct page *page, int order); #define HAVE_ARCH_FREE_PAGE +#include <asm-generic/page.h> + #endif diff --git a/include/asm-um/pgalloc.h b/include/asm-um/pgalloc.h index 8fcb2fc0a89..ea49411236d 100644 --- a/include/asm-um/pgalloc.h +++ b/include/asm-um/pgalloc.h @@ -42,11 +42,13 @@ static inline void pte_free(struct page *pte) #define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte)) #ifdef CONFIG_3_LEVEL_PGTABLES -/* - * In the 3-level case we free the pmds as part of the pgd. - */ -#define pmd_free(x) do { } while (0) -#define __pmd_free_tlb(tlb,x) do { } while (0) + +extern __inline__ void pmd_free(pmd_t *pmd) +{ + free_page((unsigned long)pmd); +} + +#define __pmd_free_tlb(tlb,x) tlb_remove_page((tlb),virt_to_page(x)) #endif #define check_pgt_cache() do { } while (0) diff --git a/include/asm-um/pgtable-2level.h b/include/asm-um/pgtable-2level.h index 9b3abc01d60..ffe017f6b64 100644 --- a/include/asm-um/pgtable-2level.h +++ b/include/asm-um/pgtable-2level.h @@ -35,35 +35,8 @@ static inline int pgd_newpage(pgd_t pgd) { return 0; } static inline void pgd_mkuptodate(pgd_t pgd) { } -#define pte_present(x) (pte_val(x) & (_PAGE_PRESENT | _PAGE_PROTNONE)) - -static inline pte_t pte_mknewprot(pte_t pte) -{ - pte_val(pte) |= _PAGE_NEWPROT; - return(pte); -} - -static inline pte_t pte_mknewpage(pte_t pte) -{ - pte_val(pte) |= _PAGE_NEWPAGE; - return(pte); -} - -static inline void set_pte(pte_t *pteptr, pte_t pteval) -{ - /* If it's a swap entry, it needs to be marked _PAGE_NEWPAGE so - * fix_range knows to unmap it. _PAGE_NEWPROT is specific to - * mapped pages. - */ - *pteptr = pte_mknewpage(pteval); - if(pte_present(*pteptr)) *pteptr = pte_mknewprot(*pteptr); -} -#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval) - #define set_pmd(pmdptr, pmdval) (*(pmdptr) = (pmdval)) -#define pte_page(x) pfn_to_page(pte_pfn(x)) -#define pte_none(x) !(pte_val(x) & ~_PAGE_NEWPAGE) #define pte_pfn(x) phys_to_pfn(pte_val(x)) #define pfn_pte(pfn, prot) __pte(pfn_to_phys(pfn) | pgprot_val(prot)) #define pfn_pmd(pfn, prot) __pmd(pfn_to_phys(pfn) | pgprot_val(prot)) diff --git a/include/asm-um/pgtable-3level.h b/include/asm-um/pgtable-3level.h index 65e8bfc55fc..786c2572728 100644 --- a/include/asm-um/pgtable-3level.h +++ b/include/asm-um/pgtable-3level.h @@ -57,35 +57,6 @@ static inline int pgd_newpage(pgd_t pgd) static inline void pgd_mkuptodate(pgd_t pgd) { pgd_val(pgd) &= ~_PAGE_NEWPAGE; } - -#define pte_present(x) pte_get_bits(x, (_PAGE_PRESENT | _PAGE_PROTNONE)) - -static inline pte_t pte_mknewprot(pte_t pte) -{ - pte_set_bits(pte, _PAGE_NEWPROT); - return(pte); -} - -static inline pte_t pte_mknewpage(pte_t pte) -{ - pte_set_bits(pte, _PAGE_NEWPAGE); - return(pte); -} - -static inline void set_pte(pte_t *pteptr, pte_t pteval) -{ - pte_copy(*pteptr, pteval); - - /* If it's a swap entry, it needs to be marked _PAGE_NEWPAGE so - * fix_range knows to unmap it. _PAGE_NEWPROT is specific to - * mapped pages. - */ - - *pteptr = pte_mknewpage(*pteptr); - if(pte_present(*pteptr)) *pteptr = pte_mknewprot(*pteptr); -} -#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval) - #define set_pmd(pmdptr, pmdval) set_64bit((phys_t *) (pmdptr), pmd_val(pmdval)) static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address) @@ -98,14 +69,11 @@ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address) return pmd; } -static inline void pmd_free(pmd_t *pmd){ - free_page((unsigned long) pmd); +extern inline void pud_clear (pud_t *pud) +{ + set_pud(pud, __pud(0)); } -#define __pmd_free_tlb(tlb,x) do { } while (0) - -static inline void pud_clear (pud_t * pud) { } - #define pud_page(pud) \ ((struct page *) __va(pud_val(pud) & PAGE_MASK)) @@ -113,13 +81,6 @@ static inline void pud_clear (pud_t * pud) { } #define pmd_offset(pud, address) ((pmd_t *) pud_page(*(pud)) + \ pmd_index(address)) -#define pte_page(x) pfn_to_page(pte_pfn(x)) - -static inline int pte_none(pte_t pte) -{ - return pte_is_zero(pte); -} - static inline unsigned long pte_pfn(pte_t pte) { return phys_to_pfn(pte_val(pte)); diff --git a/include/asm-um/pgtable.h b/include/asm-um/pgtable.h index a8804092031..b48e0966ecd 100644 --- a/include/asm-um/pgtable.h +++ b/include/asm-um/pgtable.h @@ -16,13 +16,15 @@ #define _PAGE_PRESENT 0x001 #define _PAGE_NEWPAGE 0x002 -#define _PAGE_NEWPROT 0x004 -#define _PAGE_FILE 0x008 /* set:pagecache unset:swap */ -#define _PAGE_PROTNONE 0x010 /* If not present */ +#define _PAGE_NEWPROT 0x004 #define _PAGE_RW 0x020 #define _PAGE_USER 0x040 #define _PAGE_ACCESSED 0x080 #define _PAGE_DIRTY 0x100 +/* If _PAGE_PRESENT is clear, we use these: */ +#define _PAGE_FILE 0x008 /* nonlinear file mapping, saved PTE; unset:swap */ +#define _PAGE_PROTNONE 0x010 /* if the user mapped it with PROT_NONE; + pte_present gives true */ #ifdef CONFIG_3_LEVEL_PGTABLES #include "asm/pgtable-3level.h" @@ -151,10 +153,24 @@ extern unsigned long pg0[1024]; #define pmd_page(pmd) phys_to_page(pmd_val(pmd) & PAGE_MASK) +#define pte_page(x) pfn_to_page(pte_pfn(x)) #define pte_address(x) (__va(pte_val(x) & PAGE_MASK)) #define mk_phys(a, r) ((a) + (((unsigned long) r) << REGION_SHIFT)) #define phys_addr(p) ((p) & ~REGION_MASK) +#define pte_present(x) pte_get_bits(x, (_PAGE_PRESENT | _PAGE_PROTNONE)) + +/* + * ================================= + * Flags checking section. + * ================================= + */ + +static inline int pte_none(pte_t pte) +{ + return pte_is_zero(pte); +} + /* * The following only work if pte_present() is true. * Undefined behaviour if not.. @@ -210,6 +226,18 @@ static inline int pte_newprot(pte_t pte) return(pte_present(pte) && (pte_get_bits(pte, _PAGE_NEWPROT))); } +/* + * ================================= + * Flags setting section. + * ================================= + */ + +static inline pte_t pte_mknewprot(pte_t pte) +{ + pte_set_bits(pte, _PAGE_NEWPROT); + return(pte); +} + static inline pte_t pte_rdprotect(pte_t pte) { pte_clear_bits(pte, _PAGE_USER); @@ -278,6 +306,26 @@ static inline pte_t pte_mkuptodate(pte_t pte) return(pte); } +static inline pte_t pte_mknewpage(pte_t pte) +{ + pte_set_bits(pte, _PAGE_NEWPAGE); + return(pte); +} + +static inline void set_pte(pte_t *pteptr, pte_t pteval) +{ + pte_copy(*pteptr, pteval); + + /* If it's a swap entry, it needs to be marked _PAGE_NEWPAGE so + * fix_range knows to unmap it. _PAGE_NEWPROT is specific to + * mapped pages. + */ + + *pteptr = pte_mknewpage(*pteptr); + if(pte_present(*pteptr)) *pteptr = pte_mknewprot(*pteptr); +} +#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval) + extern phys_t page_to_phys(struct page *page); /* |