linux-kernel - [PATCH v7 01/11] hugetlb: Harmonize hugetlb.h arch specific defines with pgtable.h

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Date:   Thu, 20 Sep 2018 06:03:48 +0000
From:   Alexandre Ghiti <alex@...ti.fr>
To:     akpm@...ux-foundation.org
Cc:     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, Alexandre Ghiti <alex@...ti.fr>
Subject: [PATCH v7 01/11] hugetlb: Harmonize hugetlb.h arch specific defines with pgtable.h

asm-generic/hugetlb.h proposes generic implementations of hugetlb
related functions: use __HAVE_ARCH_HUGE* defines in order to make arch
specific implementations of hugetlb functions consistent with pgtable.h
scheme.

Signed-off-by: Alexandre Ghiti <alex@...ti.fr>
Acked-by: Catalin Marinas <catalin.marinas@....com> # arm64
Reviewed-by: Luiz Capitulino <lcapitulino@...hat.com>
Reviewed-by: Mike Kravetz <mike.kravetz@...cle.com>
---
 arch/arm64/include/asm/hugetlb.h | 2 +-
 include/asm-generic/hugetlb.h    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
index e73f68569624..3fcf14663dfa 100644
--- a/arch/arm64/include/asm/hugetlb.h
+++ b/arch/arm64/include/asm/hugetlb.h
@@ -81,9 +81,9 @@ extern void huge_ptep_set_wrprotect(struct mm_struct *mm,
 				    unsigned long addr, pte_t *ptep);
 extern void huge_ptep_clear_flush(struct vm_area_struct *vma,
 				  unsigned long addr, pte_t *ptep);
+#define __HAVE_ARCH_HUGE_PTE_CLEAR
 extern void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
 			   pte_t *ptep, unsigned long sz);
-#define huge_pte_clear huge_pte_clear
 extern void set_huge_swap_pte_at(struct mm_struct *mm, unsigned long addr,
 				 pte_t *ptep, pte_t pte, unsigned long sz);
 #define set_huge_swap_pte_at set_huge_swap_pte_at
diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
index 9d0cde8ab716..3da7cff52360 100644
--- a/include/asm-generic/hugetlb.h
+++ b/include/asm-generic/hugetlb.h
@@ -32,7 +32,7 @@ static inline pte_t huge_pte_modify(pte_t pte, pgprot_t newprot)
 	return pte_modify(pte, newprot);
 }
 
-#ifndef huge_pte_clear
+#ifndef __HAVE_ARCH_HUGE_PTE_CLEAR
 static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
 		    pte_t *ptep, unsigned long sz)
 {
-- 
2.16.2