Re: [PATCH 05/11] hugetlb: Introduce generic version of huge_ptep_clear_flush

Alexandre Ghiti <alex@xxxxxxxx> · Wed, 4 Jul 2018 08:51:43 +0200

Just discovered my email provider limit of mails per minute, please drop 
this serie, I'll send a v2 using --batch-size option of git send-email. 
Sorry about that.


On 07/04/2018 07:52 AM, Alexandre Ghiti wrote:
arm, x86 architectures use the same version of
huge_ptep_clear_flush, so move this generic implementation into
asm-generic/hugetlb.h.

Signed-off-by: Alexandre Ghiti <alex@xxxxxxxx>
---
  arch/arm/include/asm/hugetlb-3level.h | 6 ------
  arch/arm64/include/asm/hugetlb.h      | 1 +
  arch/ia64/include/asm/hugetlb.h       | 1 +
  arch/mips/include/asm/hugetlb.h       | 1 +
  arch/parisc/include/asm/hugetlb.h     | 1 +
  arch/powerpc/include/asm/hugetlb.h    | 1 +
  arch/sh/include/asm/hugetlb.h         | 1 +
  arch/sparc/include/asm/hugetlb.h      | 1 +
  arch/x86/include/asm/hugetlb.h        | 6 ------
  include/asm-generic/hugetlb.h         | 8 ++++++++
  10 files changed, 15 insertions(+), 12 deletions(-)

diff --git a/arch/arm/include/asm/hugetlb-3level.h b/arch/arm/include/asm/hugetlb-3level.h
index ad36e84b819a..b897541520ef 100644
--- a/arch/arm/include/asm/hugetlb-3level.h
+++ b/arch/arm/include/asm/hugetlb-3level.h
@@ -37,12 +37,6 @@ static inline pte_t huge_ptep_get(pte_t *ptep)
  	return retval;
  }
  
-static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
-					 unsigned long addr, pte_t *ptep)
-{
-	ptep_clear_flush(vma, addr, ptep);
-}
-
  static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
  					   unsigned long addr, pte_t *ptep)
  {
diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
index 6ae0bcafe162..4c8dd488554d 100644
--- a/arch/arm64/include/asm/hugetlb.h
+++ b/arch/arm64/include/asm/hugetlb.h
@@ -71,6 +71,7 @@ extern pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
  				     unsigned long addr, pte_t *ptep);
  extern void huge_ptep_set_wrprotect(struct mm_struct *mm,
  				    unsigned long addr, pte_t *ptep);
+#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
  extern void huge_ptep_clear_flush(struct vm_area_struct *vma,
  				  unsigned long addr, pte_t *ptep);
  #define __HAVE_ARCH_HUGE_PTE_CLEAR
diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
index 6719c74da0de..41b5f6adeee4 100644
--- a/arch/ia64/include/asm/hugetlb.h
+++ b/arch/ia64/include/asm/hugetlb.h
@@ -20,6 +20,7 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
  		REGION_NUMBER((addr)+(len)-1) == RGN_HPAGE);
  }
  
+#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
  static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
  					 unsigned long addr, pte_t *ptep)
  {
diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
index 0959cc5a41fa..7df1f116a3cc 100644
--- a/arch/mips/include/asm/hugetlb.h
+++ b/arch/mips/include/asm/hugetlb.h
@@ -48,6 +48,7 @@ static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
  	return pte;
  }
  
+#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
  static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
  					 unsigned long addr, pte_t *ptep)
  {
diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
index 6e281e1bb336..9afff26747a1 100644
--- a/arch/parisc/include/asm/hugetlb.h
+++ b/arch/parisc/include/asm/hugetlb.h
@@ -32,6 +32,7 @@ static inline int prepare_hugepage_range(struct file *file,
  	return 0;
  }
  
+#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
  static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
  					 unsigned long addr, pte_t *ptep)
  {
diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
index ec3e0c2e78f8..de0769f0b5b2 100644
--- a/arch/powerpc/include/asm/hugetlb.h
+++ b/arch/powerpc/include/asm/hugetlb.h
@@ -143,6 +143,7 @@ static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
  #endif
  }
  
+#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
  static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
  					 unsigned long addr, pte_t *ptep)
  {
diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
index 08ee6c00b5e9..9abf9c86b769 100644
--- a/arch/sh/include/asm/hugetlb.h
+++ b/arch/sh/include/asm/hugetlb.h
@@ -25,6 +25,7 @@ static inline int prepare_hugepage_range(struct file *file,
  	return 0;
  }
  
+#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
  static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
  					 unsigned long addr, pte_t *ptep)
  {
diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
index 944e3a4bfaff..651a9593fcee 100644
--- a/arch/sparc/include/asm/hugetlb.h
+++ b/arch/sparc/include/asm/hugetlb.h
@@ -42,6 +42,7 @@ static inline int prepare_hugepage_range(struct file *file,
  	return 0;
  }
  
+#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
  static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
  					 unsigned long addr, pte_t *ptep)
  {
diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
index 48b8d9b13cc6..8347d5abf882 100644
--- a/arch/x86/include/asm/hugetlb.h
+++ b/arch/x86/include/asm/hugetlb.h
@@ -27,12 +27,6 @@ static inline int prepare_hugepage_range(struct file *file,
  	return 0;
  }
  
-static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
-					 unsigned long addr, pte_t *ptep)
-{
-	ptep_clear_flush(vma, addr, ptep);
-}
-
  static inline int huge_pte_none(pte_t pte)
  {
  	return pte_none(pte);
diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
index 0f6f151780dd..ffa63fd8388d 100644
--- a/include/asm-generic/hugetlb.h
+++ b/include/asm-generic/hugetlb.h
@@ -65,4 +65,12 @@ static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
  }
  #endif
  
+#ifndef __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
+static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
+		unsigned long addr, pte_t *ptep)
+{
+	ptep_clear_flush(vma, addr, ptep);
+}
+#endif
+
  #endif /* _ASM_GENERIC_HUGETLB_H */








