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Fri, 21 Jan 2022 08:42:40 +0000 From: Christophe Leroy To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , "alex@ghiti.fr" Subject: [PATCH v7 11/14] powerpc/mm: Move get_unmapped_area functions to slice.c Thread-Topic: [PATCH v7 11/14] powerpc/mm: Move get_unmapped_area functions to slice.c Thread-Index: AQHYDqLZ1ugDhI6z+E+ZOoMcYyydgQ== Date: Fri, 21 Jan 2022 08:42:40 +0000 Message-ID: <1c083902be8813752bff297f2fb760bdc089339a.1642752946.git.christophe.leroy@csgroup.eu> References: In-Reply-To: Accept-Language: fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=csgroup.eu; x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 45710015-d061-4663-39fd-08d9dcb9fbc7 x-ms-traffictypediagnostic: PR0P264MB0201:EE_ x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:6108; x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; 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Do the same with arch_get_unmapped_area() and arch_get_unmapped_area_topdown(). Signed-off-by: Christophe Leroy --- arch/powerpc/include/asm/book3s/64/mmu.h | 6 ---- arch/powerpc/include/asm/book3s/64/slice.h | 6 ++++ arch/powerpc/mm/book3s64/slice.c | 42 ++++++++++++++++++++++ arch/powerpc/mm/hugetlbpage.c | 21 ----------- arch/powerpc/mm/mmap.c | 36 ------------------- 5 files changed, 48 insertions(+), 63 deletions(-) diff --git a/arch/powerpc/include/asm/book3s/64/mmu.h b/arch/powerpc/include/asm/book3s/64/mmu.h index ba5b1becf518..db47524fa8ea 100644 --- a/arch/powerpc/include/asm/book3s/64/mmu.h +++ b/arch/powerpc/include/asm/book3s/64/mmu.h @@ -4,12 +4,6 @@ #include -#ifdef CONFIG_HUGETLB_PAGE -#define HAVE_ARCH_HUGETLB_UNMAPPED_AREA -#endif -#define HAVE_ARCH_UNMAPPED_AREA -#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN - #ifndef __ASSEMBLY__ /* * Page size definition diff --git a/arch/powerpc/include/asm/book3s/64/slice.h b/arch/powerpc/include/asm/book3s/64/slice.h index 5b0f7105bc8b..b8eb4ad271b9 100644 --- a/arch/powerpc/include/asm/book3s/64/slice.h +++ b/arch/powerpc/include/asm/book3s/64/slice.h @@ -4,6 +4,12 @@ #ifndef __ASSEMBLY__ +#ifdef CONFIG_HUGETLB_PAGE +#define HAVE_ARCH_HUGETLB_UNMAPPED_AREA +#endif +#define HAVE_ARCH_UNMAPPED_AREA +#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN + #define SLICE_LOW_SHIFT 28 #define SLICE_LOW_TOP (0x100000000ul) #define SLICE_NUM_LOW (SLICE_LOW_TOP >> SLICE_LOW_SHIFT) diff --git a/arch/powerpc/mm/book3s64/slice.c b/arch/powerpc/mm/book3s64/slice.c index e4382713746d..03681042b807 100644 --- a/arch/powerpc/mm/book3s64/slice.c +++ b/arch/powerpc/mm/book3s64/slice.c @@ -639,6 +639,32 @@ unsigned long slice_get_unmapped_area(unsigned long addr, unsigned long len, } EXPORT_SYMBOL_GPL(slice_get_unmapped_area); +unsigned long arch_get_unmapped_area(struct file *filp, + unsigned long addr, + unsigned long len, + unsigned long pgoff, + unsigned long flags) +{ + if (radix_enabled()) + return generic_get_unmapped_area(filp, addr, len, pgoff, flags); + + return slice_get_unmapped_area(addr, len, flags, + mm_ctx_user_psize(¤t->mm->context), 0); +} + +unsigned long arch_get_unmapped_area_topdown(struct file *filp, + const unsigned long addr0, + const unsigned long len, + const unsigned long pgoff, + const unsigned long flags) +{ + if (radix_enabled()) + return generic_get_unmapped_area_topdown(filp, addr0, len, pgoff, flags); + + return slice_get_unmapped_area(addr0, len, flags, + mm_ctx_user_psize(¤t->mm->context), 1); +} + unsigned int notrace get_slice_psize(struct mm_struct *mm, unsigned long addr) { unsigned char *psizes; @@ -766,4 +792,20 @@ unsigned long vma_mmu_pagesize(struct vm_area_struct *vma) return 1UL << mmu_psize_to_shift(get_slice_psize(vma->vm_mm, vma->vm_start)); } + +static int file_to_psize(struct file *file) +{ + struct hstate *hstate = hstate_file(file); + return shift_to_mmu_psize(huge_page_shift(hstate)); +} + +unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, + unsigned long len, unsigned long pgoff, + unsigned long flags) +{ + if (radix_enabled()) + return generic_hugetlb_get_unmapped_area(file, addr, len, pgoff, flags); + + return slice_get_unmapped_area(addr, len, flags, file_to_psize(file), 1); +} #endif diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c index bfd7f4af1e58..eb9de09e49a3 100644 --- a/arch/powerpc/mm/hugetlbpage.c +++ b/arch/powerpc/mm/hugetlbpage.c @@ -542,27 +542,6 @@ struct page *follow_huge_pd(struct vm_area_struct *vma, return page; } -#ifdef HAVE_ARCH_HUGETLB_UNMAPPED_AREA -static inline int file_to_psize(struct file *file) -{ - struct hstate *hstate = hstate_file(file); - return shift_to_mmu_psize(huge_page_shift(hstate)); -} - -unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, - unsigned long len, unsigned long pgoff, - unsigned long flags) -{ - if (radix_enabled()) - return generic_hugetlb_get_unmapped_area(file, addr, len, - pgoff, flags); -#ifdef CONFIG_PPC_64S_HASH_MMU - return slice_get_unmapped_area(addr, len, flags, file_to_psize(file), 1); -#endif - BUG(); -} -#endif - bool __init arch_hugetlb_valid_size(unsigned long size) { int shift = __ffs(size); diff --git a/arch/powerpc/mm/mmap.c b/arch/powerpc/mm/mmap.c index 46781d0103d1..5972d619d274 100644 --- a/arch/powerpc/mm/mmap.c +++ b/arch/powerpc/mm/mmap.c @@ -80,42 +80,6 @@ static inline unsigned long mmap_base(unsigned long rnd, return PAGE_ALIGN(DEFAULT_MAP_WINDOW - gap - rnd); } -#ifdef HAVE_ARCH_UNMAPPED_AREA -unsigned long arch_get_unmapped_area(struct file *filp, - unsigned long addr, - unsigned long len, - unsigned long pgoff, - unsigned long flags) -{ - if (radix_enabled()) - return generic_get_unmapped_area(filp, addr, len, pgoff, flags); - -#ifdef CONFIG_PPC_64S_HASH_MMU - return slice_get_unmapped_area(addr, len, flags, - mm_ctx_user_psize(¤t->mm->context), 0); -#else - BUG(); -#endif -} - -unsigned long arch_get_unmapped_area_topdown(struct file *filp, - const unsigned long addr0, - const unsigned long len, - const unsigned long pgoff, - const unsigned long flags) -{ - if (radix_enabled()) - return generic_get_unmapped_area_topdown(filp, addr0, len, pgoff, flags); - -#ifdef CONFIG_PPC_64S_HASH_MMU - return slice_get_unmapped_area(addr0, len, flags, - mm_ctx_user_psize(¤t->mm->context), 1); -#else - BUG(); -#endif -} -#endif /* HAVE_ARCH_UNMAPPED_AREA */ - /* * This function, called very early during the creation of a new * process VM image, sets up which VM layout function to use: