[PATCH V2 14/68] powerpc/mm: Use generic version of ptep_clear_flush_young
From: Aneesh Kumar K.V <hidden>
Date: 2016-04-09 06:15:01
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
The radix variant is going to require a flush_tlb_range. With flush_tlb_range added, ptep_clear_flush_young is same as the generic version. So drop the powerpc specific variant Signed-off-by: Aneesh Kumar K.V <redacted> --- arch/powerpc/include/asm/book3s/64/hash.h | 23 +++++++---------------- 1 file changed, 7 insertions(+), 16 deletions(-)
diff --git a/arch/powerpc/include/asm/book3s/64/hash.h b/arch/powerpc/include/asm/book3s/64/hash.h
index 8de6e2929290..2b2328873c38 100644
--- a/arch/powerpc/include/asm/book3s/64/hash.h
+++ b/arch/powerpc/include/asm/book3s/64/hash.h@@ -279,6 +279,13 @@ static inline unsigned long pte_update(struct mm_struct *mm, return old; } +/* + * We currently remove entries from the hashtable regardless of whether + * 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 + */ static inline int __ptep_test_and_clear_young(struct mm_struct *mm, unsigned long addr, pte_t *ptep) {
@@ -317,22 +324,6 @@ static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, pte_update(mm, addr, ptep, _PAGE_WRITE, 0, 1); } -/* - * 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. - * - * We should be more intelligent about this but for the moment we override - * these functions and force a tlb flush unconditionally - */ -#define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH -#define ptep_clear_flush_young(__vma, __address, __ptep) \ -({ \ - int __young = __ptep_test_and_clear_young((__vma)->vm_mm, __address, \ - __ptep); \ - __young; \ -}) - #define __HAVE_ARCH_PTEP_GET_AND_CLEAR static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
--
2.5.0