From patchwork Tue Apr 14 11:44:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anshuman Khandual X-Patchwork-Id: 11487335 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D7599913 for ; Tue, 14 Apr 2020 11:45:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BE1FF2072D for ; Tue, 14 Apr 2020 11:45:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2439548AbgDNLpR (ORCPT ); Tue, 14 Apr 2020 07:45:17 -0400 Received: from foss.arm.com ([217.140.110.172]:53730 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2439533AbgDNLpH (ORCPT ); Tue, 14 Apr 2020 07:45:07 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 10ADC1FB; Tue, 14 Apr 2020 04:45:06 -0700 (PDT) Received: from p8cg001049571a15.arm.com (unknown [10.163.1.49]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 0806F3F6C4; Tue, 14 Apr 2020 04:44:55 -0700 (PDT) From: Anshuman Khandual To: linux-mm@kvack.org Cc: Anshuman Khandual , Russell King , Catalin Marinas , Will Deacon , Tony Luck , Fenghua Yu , Thomas Bogendoerfer , "James E.J. Bottomley" , Helge Deller , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Paul Walmsley , Palmer Dabbelt , Heiko Carstens , Vasily Gorbik , Christian Borntraeger , Yoshinori Sato , Rich Felker , "David S. Miller" , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Mike Kravetz , x86@kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/3] mm/hugetlb: Introduce HAVE_ARCH_IS_HUGEPAGE_ONLY_RANGE Date: Tue, 14 Apr 2020 17:14:29 +0530 Message-Id: <1586864670-21799-3-git-send-email-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1586864670-21799-1-git-send-email-anshuman.khandual@arm.com> References: <1586864670-21799-1-git-send-email-anshuman.khandual@arm.com> Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org There are multiple similar definitions for is_hugepage_only_range() across platforms. This introduces HAVE_ARCH_IS_HUGEPAGE_ONLY_RANGE for platforms that need to define their own is_hugepage_only_range() but otherwise there is a generic fallback definition for others to use. This help reduce code duplication. Cc: Russell King Cc: Catalin Marinas Cc: Will Deacon Cc: Tony Luck Cc: Fenghua Yu Cc: Thomas Bogendoerfer Cc: "James E.J. Bottomley" Cc: Helge Deller Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Cc: Paul Walmsley Cc: Palmer Dabbelt Cc: Heiko Carstens Cc: Vasily Gorbik Cc: Christian Borntraeger Cc: Yoshinori Sato Cc: Rich Felker Cc: "David S. Miller" Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: "H. Peter Anvin" Cc: Mike Kravetz Cc: x86@kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-ia64@vger.kernel.org Cc: linux-mips@vger.kernel.org Cc: linux-parisc@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-riscv@lists.infradead.org Cc: linux-s390@vger.kernel.org Cc: linux-sh@vger.kernel.org Cc: sparclinux@vger.kernel.org Cc: linux-mm@kvack.org Cc: linux-arch@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Anshuman Khandual --- arch/arm/include/asm/hugetlb.h | 6 ------ arch/arm64/include/asm/hugetlb.h | 6 ------ arch/ia64/include/asm/hugetlb.h | 1 + arch/mips/include/asm/hugetlb.h | 7 ------- arch/parisc/include/asm/hugetlb.h | 6 ------ arch/powerpc/include/asm/hugetlb.h | 1 + arch/riscv/include/asm/hugetlb.h | 6 ------ arch/s390/include/asm/hugetlb.h | 7 ------- arch/sh/include/asm/hugetlb.h | 6 ------ arch/sparc/include/asm/hugetlb.h | 6 ------ arch/x86/include/asm/hugetlb.h | 6 ------ include/linux/hugetlb.h | 8 ++++++++ 12 files changed, 10 insertions(+), 56 deletions(-) diff --git a/arch/arm/include/asm/hugetlb.h b/arch/arm/include/asm/hugetlb.h index 318dcf5921ab..9ecd516d1ff7 100644 --- a/arch/arm/include/asm/hugetlb.h +++ b/arch/arm/include/asm/hugetlb.h @@ -14,12 +14,6 @@ #include #include -static inline int is_hugepage_only_range(struct mm_struct *mm, - unsigned long addr, unsigned long len) -{ - return 0; -} - static inline void arch_clear_hugepage_flags(struct page *page) { clear_bit(PG_dcache_clean, &page->flags); diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h index b88878ddc88b..8f58e052697a 100644 --- a/arch/arm64/include/asm/hugetlb.h +++ b/arch/arm64/include/asm/hugetlb.h @@ -17,12 +17,6 @@ extern bool arch_hugetlb_migration_supported(struct hstate *h); #endif -static inline int is_hugepage_only_range(struct mm_struct *mm, - unsigned long addr, unsigned long len) -{ - return 0; -} - static inline void arch_clear_hugepage_flags(struct page *page) { clear_bit(PG_dcache_clean, &page->flags); diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h index 36cc0396b214..f17c1e228045 100644 --- a/arch/ia64/include/asm/hugetlb.h +++ b/arch/ia64/include/asm/hugetlb.h @@ -13,6 +13,7 @@ void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr, int prepare_hugepage_range(struct file *file, unsigned long addr, unsigned long len); +#define HAVE_ARCH_IS_HUGEPAGE_ONLY_RANGE static inline int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr, unsigned long len) diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h index 425bb6fc3bda..8b201e281f67 100644 --- a/arch/mips/include/asm/hugetlb.h +++ b/arch/mips/include/asm/hugetlb.h @@ -11,13 +11,6 @@ #include -static inline int is_hugepage_only_range(struct mm_struct *mm, - unsigned long addr, - unsigned long len) -{ - return 0; -} - #define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE static inline int prepare_hugepage_range(struct file *file, unsigned long addr, diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h index 7cb595dcb7d7..411d9d867baa 100644 --- a/arch/parisc/include/asm/hugetlb.h +++ b/arch/parisc/include/asm/hugetlb.h @@ -12,12 +12,6 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep); -static inline int is_hugepage_only_range(struct mm_struct *mm, - unsigned long addr, - unsigned long len) { - return 0; -} - /* * If the arch doesn't supply something else, assume that hugepage * size aligned regions are ok without further preparation. diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h index bd6504c28c2f..9dd50e1e4fe5 100644 --- a/arch/powerpc/include/asm/hugetlb.h +++ b/arch/powerpc/include/asm/hugetlb.h @@ -22,6 +22,7 @@ void flush_dcache_icache_hugepage(struct page *page); int slice_is_hugepage_only_range(struct mm_struct *mm, unsigned long addr, unsigned long len); +#define HAVE_ARCH_IS_HUGEPAGE_ONLY_RANGE static inline int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr, unsigned long len) diff --git a/arch/riscv/include/asm/hugetlb.h b/arch/riscv/include/asm/hugetlb.h index 728a5db66597..866f6ae6467c 100644 --- a/arch/riscv/include/asm/hugetlb.h +++ b/arch/riscv/include/asm/hugetlb.h @@ -5,12 +5,6 @@ #include #include -static inline int is_hugepage_only_range(struct mm_struct *mm, - unsigned long addr, - unsigned long len) { - return 0; -} - static inline void arch_clear_hugepage_flags(struct page *page) { } diff --git a/arch/s390/include/asm/hugetlb.h b/arch/s390/include/asm/hugetlb.h index de8f0bf5f238..7d27ea96ec2f 100644 --- a/arch/s390/include/asm/hugetlb.h +++ b/arch/s390/include/asm/hugetlb.h @@ -21,13 +21,6 @@ pte_t huge_ptep_get(pte_t *ptep); pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep); -static inline bool is_hugepage_only_range(struct mm_struct *mm, - unsigned long addr, - unsigned long len) -{ - return false; -} - /* * If the arch doesn't supply something else, assume that hugepage * size aligned regions are ok without further preparation. diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h index 6f025fe18146..536ad2cb8aa4 100644 --- a/arch/sh/include/asm/hugetlb.h +++ b/arch/sh/include/asm/hugetlb.h @@ -5,12 +5,6 @@ #include #include -static inline int is_hugepage_only_range(struct mm_struct *mm, - unsigned long addr, - unsigned long len) { - return 0; -} - /* * If the arch doesn't supply something else, assume that hugepage * size aligned regions are ok without further preparation. diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h index 3963f80d1cb3..a056fe1119f5 100644 --- a/arch/sparc/include/asm/hugetlb.h +++ b/arch/sparc/include/asm/hugetlb.h @@ -20,12 +20,6 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep); -static inline int is_hugepage_only_range(struct mm_struct *mm, - unsigned long addr, - unsigned long len) { - 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 f65cfb48cfdd..cc98f79074d0 100644 --- a/arch/x86/include/asm/hugetlb.h +++ b/arch/x86/include/asm/hugetlb.h @@ -7,12 +7,6 @@ #define hugepages_supported() boot_cpu_has(X86_FEATURE_PSE) -static inline int is_hugepage_only_range(struct mm_struct *mm, - unsigned long addr, - unsigned long len) { - return 0; -} - static inline void arch_clear_hugepage_flags(struct page *page) { } diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 1e897e4168ac..2342e5a8d1dd 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -536,6 +536,14 @@ static inline unsigned int blocks_per_huge_page(struct hstate *h) #include +#ifndef HAVE_ARCH_IS_HUGEPAGE_ONLY_RANGE +static inline int is_hugepage_only_range(struct mm_struct *mm, + unsigned long addr, unsigned long len) +{ + return 0; +} +#endif + #ifndef arch_make_huge_pte static inline pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma, struct page *page, int writable)