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Message-Id: <20180806175711.24438-12-alex@ghiti.fr>
Date: Mon, 6 Aug 2018 17:57:11 +0000
From: Alexandre Ghiti <alex@...ti.fr>
To: linux-mm@...ck.org, mike.kravetz@...cle.com, linux@...linux.org.uk,
catalin.marinas@....com, will.deacon@....com, tony.luck@...el.com,
fenghua.yu@...el.com, ralf@...ux-mips.org, paul.burton@...s.com,
jhogan@...nel.org, jejb@...isc-linux.org, deller@....de,
benh@...nel.crashing.org, paulus@...ba.org, mpe@...erman.id.au,
ysato@...rs.sourceforge.jp, dalias@...c.org, davem@...emloft.net,
tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
x86@...nel.org, arnd@...db.de,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-ia64@...r.kernel.org, linux-mips@...ux-mips.org,
linux-parisc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
linux-sh@...r.kernel.org, sparclinux@...r.kernel.org,
linux-arch@...r.kernel.org
Cc: Alexandre Ghiti <alex@...ti.fr>
Subject: [PATCH v6 11/11] hugetlb: Introduce generic version of huge_ptep_get
ia64, mips, parisc, powerpc, sh, sparc, x86 architectures use the
same version of huge_ptep_get, so move this generic implementation into
asm-generic/hugetlb.h.
Signed-off-by: Alexandre Ghiti <alex@...ti.fr>
Tested-by: Helge Deller <deller@....de> # parisc
Acked-by: Catalin Marinas <catalin.marinas@....com> # arm64
Acked-by: Paul Burton <paul.burton@...s.com> # MIPS parts
Reviewed-by: Luiz Capitulino <lcapitulino@...hat.com>
Reviewed-by: Mike Kravetz <mike.kravetz@...cle.com>
---
arch/arm/include/asm/hugetlb-3level.h | 1 +
arch/arm64/include/asm/hugetlb.h | 1 +
arch/ia64/include/asm/hugetlb.h | 5 -----
arch/mips/include/asm/hugetlb.h | 5 -----
arch/parisc/include/asm/hugetlb.h | 5 -----
arch/powerpc/include/asm/hugetlb.h | 5 -----
arch/sh/include/asm/hugetlb.h | 5 -----
arch/sparc/include/asm/hugetlb.h | 5 -----
arch/x86/include/asm/hugetlb.h | 5 -----
include/asm-generic/hugetlb.h | 7 +++++++
10 files changed, 9 insertions(+), 35 deletions(-)
diff --git a/arch/arm/include/asm/hugetlb-3level.h b/arch/arm/include/asm/hugetlb-3level.h
index 54e4b097b1f5..0d9f3918fa7e 100644
--- a/arch/arm/include/asm/hugetlb-3level.h
+++ b/arch/arm/include/asm/hugetlb-3level.h
@@ -29,6 +29,7 @@
* ptes.
* (The valid bit is automatically cleared by set_pte_at for PROT_NONE ptes).
*/
+#define __HAVE_ARCH_HUGE_PTEP_GET
static inline pte_t huge_ptep_get(pte_t *ptep)
{
pte_t retval = *ptep;
diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
index 80887abcef7f..fb6609875455 100644
--- a/arch/arm64/include/asm/hugetlb.h
+++ b/arch/arm64/include/asm/hugetlb.h
@@ -20,6 +20,7 @@
#include <asm/page.h>
+#define __HAVE_ARCH_HUGE_PTEP_GET
static inline pte_t huge_ptep_get(pte_t *ptep)
{
return READ_ONCE(*ptep);
diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
index e9b42750fdf5..36cc0396b214 100644
--- a/arch/ia64/include/asm/hugetlb.h
+++ b/arch/ia64/include/asm/hugetlb.h
@@ -27,11 +27,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
{
}
-static inline pte_t huge_ptep_get(pte_t *ptep)
-{
- return *ptep;
-}
-
static inline void arch_clear_hugepage_flags(struct page *page)
{
}
diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
index 120adc3b2ffd..425bb6fc3bda 100644
--- a/arch/mips/include/asm/hugetlb.h
+++ b/arch/mips/include/asm/hugetlb.h
@@ -82,11 +82,6 @@ static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
return changed;
}
-static inline pte_t huge_ptep_get(pte_t *ptep)
-{
- return *ptep;
-}
-
static inline void arch_clear_hugepage_flags(struct page *page)
{
}
diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
index 165b4e5a6f32..7cb595dcb7d7 100644
--- a/arch/parisc/include/asm/hugetlb.h
+++ b/arch/parisc/include/asm/hugetlb.h
@@ -48,11 +48,6 @@ int huge_ptep_set_access_flags(struct vm_area_struct *vma,
unsigned long addr, pte_t *ptep,
pte_t pte, int dirty);
-static inline pte_t huge_ptep_get(pte_t *ptep)
-{
- return *ptep;
-}
-
static inline void arch_clear_hugepage_flags(struct page *page)
{
}
diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
index 658bf7136a3c..33a2d9e3ea9e 100644
--- a/arch/powerpc/include/asm/hugetlb.h
+++ b/arch/powerpc/include/asm/hugetlb.h
@@ -142,11 +142,6 @@ extern int huge_ptep_set_access_flags(struct vm_area_struct *vma,
unsigned long addr, pte_t *ptep,
pte_t pte, int dirty);
-static inline pte_t huge_ptep_get(pte_t *ptep)
-{
- return *ptep;
-}
-
static inline void arch_clear_hugepage_flags(struct page *page)
{
}
diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
index c87195ae0cfa..6f025fe18146 100644
--- a/arch/sh/include/asm/hugetlb.h
+++ b/arch/sh/include/asm/hugetlb.h
@@ -32,11 +32,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
{
}
-static inline pte_t huge_ptep_get(pte_t *ptep)
-{
- return *ptep;
-}
-
static inline void arch_clear_hugepage_flags(struct page *page)
{
clear_bit(PG_dcache_clean, &page->flags);
diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
index 028a1465fbe7..3963f80d1cb3 100644
--- a/arch/sparc/include/asm/hugetlb.h
+++ b/arch/sparc/include/asm/hugetlb.h
@@ -53,11 +53,6 @@ static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
return changed;
}
-static inline pte_t huge_ptep_get(pte_t *ptep)
-{
- return *ptep;
-}
-
static inline void arch_clear_hugepage_flags(struct page *page)
{
}
diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
index 574d42eb081e..7469d321f072 100644
--- a/arch/x86/include/asm/hugetlb.h
+++ b/arch/x86/include/asm/hugetlb.h
@@ -13,11 +13,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
return 0;
}
-static inline pte_t huge_ptep_get(pte_t *ptep)
-{
- return *ptep;
-}
-
static inline void arch_clear_hugepage_flags(struct page *page)
{
}
diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
index f3c99a03ee83..71d7b77eea50 100644
--- a/include/asm-generic/hugetlb.h
+++ b/include/asm-generic/hugetlb.h
@@ -119,4 +119,11 @@ static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
}
#endif
+#ifndef __HAVE_ARCH_HUGE_PTEP_GET
+static inline pte_t huge_ptep_get(pte_t *ptep)
+{
+ return *ptep;
+}
+#endif
+
#endif /* _ASM_GENERIC_HUGETLB_H */
--
2.16.2
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