linux-kernel - [PATCH 13 of 31] x86/pgtable.h: demacro ptep_test_and_clear

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Date:	Mon, 17 Mar 2008 16:37:04 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Ian Campbell <ijc@...lion.org.uk>
Subject: [PATCH 13 of 31] x86/pgtable.h: demacro ptep_test_and_clear_young

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>
---
 arch/x86/mm/pgtable.c     |   15 +++++++++++++++
 include/asm-x86/pgtable.h |   11 ++---------
 2 files changed, 17 insertions(+), 9 deletions(-)

diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
--- a/arch/x86/mm/pgtable.c
+++ b/arch/x86/mm/pgtable.c
@@ -262,3 +262,18 @@
 
 	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;
+}
diff --git a/include/asm-x86/pgtable.h b/include/asm-x86/pgtable.h
--- a/include/asm-x86/pgtable.h
+++ b/include/asm-x86/pgtable.h
@@ -304,15 +304,8 @@
 				 pte_t entry, int dirty);
 
 #define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
-#define ptep_test_and_clear_young(vma, addr, 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);			\
-	__ret;								\
-})
+extern int ptep_test_and_clear_young(struct vm_area_struct *vma,
+				     unsigned long addr, pte_t *ptep);
 
 #define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH
 #define ptep_clear_flush_young(vma, address, ptep)			\


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