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x86/pgtable.h: demacro ptep_test_and_clear_young

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Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Jeremy Fitzhardinge
2008-03-17 16:37:04 -07:00
committed by Ingo Molnar
parent ee5aa8d3ba
commit f9fbf1a36a
2 changed files with 17 additions and 9 deletions
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15
arch/x86/mm/pgtable.c
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@@ -280,3 +280,18 @@ int ptep_set_access_flags(struct vm_area_struct *vma,
return changed; return changed;
} }
int ptep_test_and_clear_young(struct vm_area_struct *vma,
unsigned long addr, pte_t *ptep)
{
int ret = 0;
if (pte_young(*ptep))
ret = test_and_clear_bit(_PAGE_BIT_ACCESSED,
&ptep->pte);
if (ret)
pte_update(vma->vm_mm, addr, ptep);
return ret;
}

11
include/asm-x86/pgtable.h
View File

@@ -394,15 +394,8 @@ extern int ptep_set_access_flags(struct vm_area_struct *vma,
pte_t entry, int dirty); pte_t entry, int dirty);
#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG #define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
#define ptep_test_and_clear_young(vma, addr, ptep) ({ \ extern int ptep_test_and_clear_young(struct vm_area_struct *vma,
int __ret = 0; \ unsigned long addr, pte_t *ptep);
if (pte_young(*(ptep))) \
__ret = test_and_clear_bit(_PAGE_BIT_ACCESSED, \
&(ptep)->pte); \
if (__ret) \
pte_update((vma)->vm_mm, addr, ptep); \
__ret; \
})
#define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH #define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH
#define ptep_clear_flush_young(vma, address, ptep) \ #define ptep_clear_flush_young(vma, address, ptep) \