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Message-ID: <5f2bebab-4ee9-bdbe-fcaa-445d6fd2dc69@oracle.com>
Date: Thu, 26 Jul 2018 12:05:58 -0700
From: Mike Kravetz <mike.kravetz@...cle.com>
To: Alexandre Ghiti <alex@...ti.fr>, 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
Subject: Re: [PATCH v4 08/11] hugetlb: Introduce generic version of
prepare_hugepage_range
On 07/05/2018 04:07 AM, Alexandre Ghiti wrote:
> arm, arm64, powerpc, sparc, x86 architectures use the same version of
> prepare_hugepage_range, so move this generic implementation into
> asm-generic/hugetlb.h.
>
Reviewed-by: Mike Kravetz <mike.kravetz@...cle.com>
--
Mike Kravetz
> Signed-off-by: Alexandre Ghiti <alex@...ti.fr>
> ---
> arch/arm/include/asm/hugetlb.h | 11 -----------
> arch/arm64/include/asm/hugetlb.h | 11 -----------
> arch/ia64/include/asm/hugetlb.h | 1 +
> arch/mips/include/asm/hugetlb.h | 1 +
> arch/parisc/include/asm/hugetlb.h | 1 +
> arch/powerpc/include/asm/hugetlb.h | 15 ---------------
> arch/sh/include/asm/hugetlb.h | 1 +
> arch/sparc/include/asm/hugetlb.h | 16 ----------------
> arch/x86/include/asm/hugetlb.h | 15 ---------------
> include/asm-generic/hugetlb.h | 15 +++++++++++++++
> 10 files changed, 19 insertions(+), 68 deletions(-)
>
> diff --git a/arch/arm/include/asm/hugetlb.h b/arch/arm/include/asm/hugetlb.h
> index 1e718a626ef9..34fb401efe81 100644
> --- a/arch/arm/include/asm/hugetlb.h
> +++ b/arch/arm/include/asm/hugetlb.h
> @@ -32,17 +32,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
> return 0;
> }
>
> -static inline int prepare_hugepage_range(struct file *file,
> - unsigned long addr, unsigned long len)
> -{
> - struct hstate *h = hstate_file(file);
> - if (len & ~huge_page_mask(h))
> - return -EINVAL;
> - if (addr & ~huge_page_mask(h))
> - return -EINVAL;
> - 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 1fd64ebf0cd7..3e7f6e69b28d 100644
> --- a/arch/arm64/include/asm/hugetlb.h
> +++ b/arch/arm64/include/asm/hugetlb.h
> @@ -31,17 +31,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
> return 0;
> }
>
> -static inline int prepare_hugepage_range(struct file *file,
> - unsigned long addr, unsigned long len)
> -{
> - struct hstate *h = hstate_file(file);
> - if (len & ~huge_page_mask(h))
> - return -EINVAL;
> - if (addr & ~huge_page_mask(h))
> - return -EINVAL;
> - 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 82fe3d7a38d9..cbe296271030 100644
> --- a/arch/ia64/include/asm/hugetlb.h
> +++ b/arch/ia64/include/asm/hugetlb.h
> @@ -9,6 +9,7 @@ void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
> unsigned long end, unsigned long floor,
> unsigned long ceiling);
>
> +#define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
> int prepare_hugepage_range(struct file *file,
> unsigned long addr, unsigned long len);
>
> diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
> index b3d6bb53ee6e..6ff2531cfb1d 100644
> --- a/arch/mips/include/asm/hugetlb.h
> +++ b/arch/mips/include/asm/hugetlb.h
> @@ -18,6 +18,7 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
> return 0;
> }
>
> +#define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
> static inline int prepare_hugepage_range(struct file *file,
> unsigned long addr,
> unsigned long len)
> diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
> index 5a102d7251e4..fb7e0fd858a3 100644
> --- a/arch/parisc/include/asm/hugetlb.h
> +++ b/arch/parisc/include/asm/hugetlb.h
> @@ -22,6 +22,7 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
> * If the arch doesn't supply something else, assume that hugepage
> * size aligned regions are ok without further preparation.
> */
> +#define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
> static inline int prepare_hugepage_range(struct file *file,
> unsigned long addr, unsigned long len)
> {
> diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
> index 7123599089c6..69c14ecac133 100644
> --- a/arch/powerpc/include/asm/hugetlb.h
> +++ b/arch/powerpc/include/asm/hugetlb.h
> @@ -117,21 +117,6 @@ void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
> unsigned long end, unsigned long floor,
> unsigned long ceiling);
>
> -/*
> - * If the arch doesn't supply something else, assume that hugepage
> - * size aligned regions are ok without further preparation.
> - */
> -static inline int prepare_hugepage_range(struct file *file,
> - unsigned long addr, unsigned long len)
> -{
> - struct hstate *h = hstate_file(file);
> - if (len & ~huge_page_mask(h))
> - return -EINVAL;
> - if (addr & ~huge_page_mask(h))
> - return -EINVAL;
> - return 0;
> -}
> -
> #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
> static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
> unsigned long addr, pte_t *ptep)
> diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
> index 54f65094efe6..f1bbd255ee43 100644
> --- a/arch/sh/include/asm/hugetlb.h
> +++ b/arch/sh/include/asm/hugetlb.h
> @@ -15,6 +15,7 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
> * If the arch doesn't supply something else, assume that hugepage
> * size aligned regions are ok without further preparation.
> */
> +#define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
> static inline int prepare_hugepage_range(struct file *file,
> unsigned long addr, unsigned long len)
> {
> diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
> index f661362376e0..2101ea217f33 100644
> --- a/arch/sparc/include/asm/hugetlb.h
> +++ b/arch/sparc/include/asm/hugetlb.h
> @@ -26,22 +26,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
> return 0;
> }
>
> -/*
> - * If the arch doesn't supply something else, assume that hugepage
> - * size aligned regions are ok without further preparation.
> - */
> -static inline int prepare_hugepage_range(struct file *file,
> - unsigned long addr, unsigned long len)
> -{
> - struct hstate *h = hstate_file(file);
> -
> - if (len & ~huge_page_mask(h))
> - return -EINVAL;
> - if (addr & ~huge_page_mask(h))
> - return -EINVAL;
> - 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 19668672ab37..2e5117d37c7d 100644
> --- a/arch/x86/include/asm/hugetlb.h
> +++ b/arch/x86/include/asm/hugetlb.h
> @@ -12,21 +12,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
> return 0;
> }
>
> -/*
> - * If the arch doesn't supply something else, assume that hugepage
> - * size aligned regions are ok without further preparation.
> - */
> -static inline int prepare_hugepage_range(struct file *file,
> - unsigned long addr, unsigned long len)
> -{
> - struct hstate *h = hstate_file(file);
> - if (len & ~huge_page_mask(h))
> - return -EINVAL;
> - if (addr & ~huge_page_mask(h))
> - return -EINVAL;
> - return 0;
> -}
> -
> static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
> unsigned long addr, pte_t *ptep)
> {
> diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
> index cd9697672b79..6c0c8b0c71e0 100644
> --- a/include/asm-generic/hugetlb.h
> +++ b/include/asm-generic/hugetlb.h
> @@ -87,4 +87,19 @@ static inline pte_t huge_pte_wrprotect(pte_t pte)
> }
> #endif
>
> +#ifndef __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
> +static inline int prepare_hugepage_range(struct file *file,
> + unsigned long addr, unsigned long len)
> +{
> + struct hstate *h = hstate_file(file);
> +
> + if (len & ~huge_page_mask(h))
> + return -EINVAL;
> + if (addr & ~huge_page_mask(h))
> + return -EINVAL;
> +
> + return 0;
> +}
> +#endif
> +
> #endif /* _ASM_GENERIC_HUGETLB_H */
>
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