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powerpc/mm: Use generic version of pmdp_clear_flush_young()

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The radix variant is going to require a flush_pmd_tlb_range(). With
flush_pmd_tlb_range() added, pmdp_clear_flush_young() is the same as the
generic version. So drop the powerpc specific variant.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Aneesh Kumar K.V 2016-04-29 23:25:39 +10:00 committed by Michael Ellerman
parent 30bda41aba
commit ff844b741e
2 changed files with 3 additions and 13 deletions
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3
arch/powerpc/include/asm/book3s/64/pgtable.h
View File

@ -298,9 +298,6 @@ extern int pmdp_set_access_flags(struct vm_area_struct *vma,
#define __HAVE_ARCH_PMDP_TEST_AND_CLEAR_YOUNG
extern int pmdp_test_and_clear_young(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp);
#define __HAVE_ARCH_PMDP_CLEAR_YOUNG_FLUSH
extern int pmdp_clear_flush_young(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp);
#define __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR
extern pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,

13
arch/powerpc/mm/pgtable_64.c
View File

@ -588,22 +588,15 @@ pmd_t pmdp_collapse_flush(struct vm_area_struct *vma, unsigned long address,
return pmd;
}
int pmdp_test_and_clear_young(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp)
{
return __pmdp_test_and_clear_young(vma->vm_mm, address, pmdp);
}
/*
* We currently remove entries from the hashtable regardless of whether
* the entry was young or dirty. The generic routines only flush if the
* entry was young or dirty which is not good enough.
* the entry was young or dirty.
*
* We should be more intelligent about this but for the moment we override
* these functions and force a tlb flush unconditionally
*/
int pmdp_clear_flush_young(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp)
int pmdp_test_and_clear_young(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp)
{
return __pmdp_test_and_clear_young(vma->vm_mm, address, pmdp);
}