Thread (50 messages) 50 messages, 4 authors, 2016-02-23

[PATCH V2 18/29] powerpc/mm: Use generic version of pmdp_clear_flush_young

From: Aneesh Kumar K.V <hidden>
Date: 2016-02-08 09:21:40
Also in: linuxppc-dev
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. We can't then
have this as static inline because of the usage of HPAGE_PMD_SIZE. So
we are forced to make it a function in which case we can use the generic version.

Signed-off-by: Aneesh Kumar K.V <redacted>
---
 arch/powerpc/include/asm/book3s/64/pgtable.h |  3 ---
 arch/powerpc/mm/pgtable-hash64.c             | 10 ++--------
 2 files changed, 2 insertions(+), 11 deletions(-)
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h
index 4699a5929408..27829e3889fc 100644
--- a/arch/powerpc/include/asm/book3s/64/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/64/pgtable.h
@@ -333,9 +333,6 @@ 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,
diff --git a/arch/powerpc/mm/pgtable-hash64.c b/arch/powerpc/mm/pgtable-hash64.c
index 8cfa297f2c64..6a5f41c1dd33 100644
--- a/arch/powerpc/mm/pgtable-hash64.c
+++ b/arch/powerpc/mm/pgtable-hash64.c
@@ -350,12 +350,6 @@ 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
@@ -364,8 +358,8 @@ int pmdp_test_and_clear_young(struct vm_area_struct *vma,
  * 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);
 }
-- 
2.5.0

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