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Thu, 26 Jul 2018 19:00:22 +0000 Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by aserv0021.oracle.com (8.14.4/8.14.4) with ESMTP id w6QJ0Je6031658 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 26 Jul 2018 19:00:20 GMT Received: from abhmp0005.oracle.com (abhmp0005.oracle.com [141.146.116.11]) by userv0121.oracle.com (8.14.4/8.13.8) with ESMTP id w6QJ0BFu012454; Thu, 26 Jul 2018 19:00:12 GMT Received: from [192.168.1.164] (/50.38.38.67) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 26 Jul 2018 12:00:09 -0700 Subject: Re: [PATCH v4 03/11] hugetlb: Introduce generic version of set_huge_pte_at To: Alexandre Ghiti , linux@armlinux.org.uk, catalin.marinas@arm.com, will.deacon@arm.com, tony.luck@intel.com, fenghua.yu@intel.com, ralf@linux-mips.org, paul.burton@mips.com, jhogan@kernel.org, jejb@parisc-linux.org, deller@gmx.de, benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au, ysato@users.sourceforge.jp, dalias@libc.org, davem@davemloft.net, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, x86@kernel.org, arnd@arndb.de, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org, linux-mips@linux-mips.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-arch@vger.kernel.org References: <20180705110716.3919-1-alex@ghiti.fr> <20180705110716.3919-4-alex@ghiti.fr> From: Mike Kravetz Message-ID: Date: Thu, 26 Jul 2018 12:00:06 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20180705110716.3919-4-alex@ghiti.fr> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8965 signatures=668706 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=2 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=960 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1806210000 definitions=main-1807260194 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/05/2018 04:07 AM, Alexandre Ghiti wrote: > arm, ia64, mips, powerpc, sh, x86 architectures use the > same version of set_huge_pte_at, so move this generic > implementation into asm-generic/hugetlb.h. > Just one comment below, otherwise: Reviewed-by: Mike Kravetz > Signed-off-by: Alexandre Ghiti > --- > arch/arm/include/asm/hugetlb-3level.h | 6 ------ > arch/arm64/include/asm/hugetlb.h | 1 + > arch/ia64/include/asm/hugetlb.h | 6 ------ > arch/mips/include/asm/hugetlb.h | 6 ------ > arch/parisc/include/asm/hugetlb.h | 1 + > arch/powerpc/include/asm/hugetlb.h | 6 ------ > arch/sh/include/asm/hugetlb.h | 6 ------ > arch/sparc/include/asm/hugetlb.h | 1 + > arch/x86/include/asm/hugetlb.h | 6 ------ > include/asm-generic/hugetlb.h | 8 +++++++- > 10 files changed, 10 insertions(+), 37 deletions(-) > > diff --git a/arch/arm/include/asm/hugetlb-3level.h b/arch/arm/include/asm/hugetlb-3level.h > index d4014fbe5ea3..398fb06e8207 100644 > --- a/arch/arm/include/asm/hugetlb-3level.h > +++ b/arch/arm/include/asm/hugetlb-3level.h > @@ -37,12 +37,6 @@ static inline pte_t huge_ptep_get(pte_t *ptep) > return retval; > } > > -static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, > - pte_t *ptep, pte_t pte) > -{ > - set_pte_at(mm, addr, ptep, pte); > -} > - Since is not directly included in this file, I had to search around in the #include dependency chain to look for it. It makes me just a tiny bit nervous, but since it compiled, I'm sure there is not an issue. -- Mike Kravetz > static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, > unsigned long addr, pte_t *ptep) > { > diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h > index 4af1a800a900..874661a1dff1 100644 > --- a/arch/arm64/include/asm/hugetlb.h > +++ b/arch/arm64/include/asm/hugetlb.h > @@ -60,6 +60,7 @@ static inline void arch_clear_hugepage_flags(struct page *page) > extern pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma, > struct page *page, int writable); > #define arch_make_huge_pte arch_make_huge_pte > +#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT > extern void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, > pte_t *ptep, pte_t pte); > extern int huge_ptep_set_access_flags(struct vm_area_struct *vma, > diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h > index afe9fa4d969b..a235d6f60fb3 100644 > --- a/arch/ia64/include/asm/hugetlb.h > +++ b/arch/ia64/include/asm/hugetlb.h > @@ -20,12 +20,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm, > REGION_NUMBER((addr)+(len)-1) == RGN_HPAGE); > } > > -static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, > - pte_t *ptep, pte_t pte) > -{ > - set_pte_at(mm, addr, ptep, pte); > -} > - > static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, > unsigned long addr, pte_t *ptep) > { > diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h > index 53764050243e..8ea439041d5d 100644 > --- a/arch/mips/include/asm/hugetlb.h > +++ b/arch/mips/include/asm/hugetlb.h > @@ -36,12 +36,6 @@ static inline int prepare_hugepage_range(struct file *file, > return 0; > } > > -static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, > - pte_t *ptep, pte_t pte) > -{ > - set_pte_at(mm, addr, ptep, pte); > -} > - > static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, > unsigned long addr, pte_t *ptep) > { > diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h > index 28c23b68d38d..77c8adbac7c3 100644 > --- a/arch/parisc/include/asm/hugetlb.h > +++ b/arch/parisc/include/asm/hugetlb.h > @@ -4,6 +4,7 @@ > > #include > > +#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT > void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, > pte_t *ptep, pte_t pte); > > diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h > index a7d5c739df9b..0794b53439d4 100644 > --- a/arch/powerpc/include/asm/hugetlb.h > +++ b/arch/powerpc/include/asm/hugetlb.h > @@ -132,12 +132,6 @@ static inline int prepare_hugepage_range(struct file *file, > return 0; > } > > -static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, > - pte_t *ptep, pte_t pte) > -{ > - set_pte_at(mm, addr, ptep, pte); > -} > - > 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 f6a51b609409..bc552e37c1c9 100644 > --- a/arch/sh/include/asm/hugetlb.h > +++ b/arch/sh/include/asm/hugetlb.h > @@ -25,12 +25,6 @@ static inline int prepare_hugepage_range(struct file *file, > return 0; > } > > -static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, > - pte_t *ptep, pte_t pte) > -{ > - set_pte_at(mm, addr, ptep, pte); > -} > - > static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, > unsigned long addr, pte_t *ptep) > { > diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h > index 59d89b52ccb7..16b0c53ea6c9 100644 > --- a/arch/sparc/include/asm/hugetlb.h > +++ b/arch/sparc/include/asm/hugetlb.h > @@ -12,6 +12,7 @@ struct pud_huge_patch_entry { > extern struct pud_huge_patch_entry __pud_huge_patch, __pud_huge_patch_end; > #endif > > +#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT > void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, > pte_t *ptep, pte_t pte); > > diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h > index 996ce8e15365..554d5614b375 100644 > --- a/arch/x86/include/asm/hugetlb.h > +++ b/arch/x86/include/asm/hugetlb.h > @@ -27,12 +27,6 @@ static inline int prepare_hugepage_range(struct file *file, > return 0; > } > > -static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, > - pte_t *ptep, pte_t pte) > -{ > - set_pte_at(mm, addr, ptep, pte); > -} > - > static inline pte_t huge_ptep_get_and_clear(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 c697ca9dda18..ee010b756246 100644 > --- a/include/asm-generic/hugetlb.h > +++ b/include/asm-generic/hugetlb.h > @@ -47,8 +47,14 @@ static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb, > { > free_pgd_range(tlb, addr, end, floor, ceiling); > } > +#endif > > - > +#ifndef __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT > +static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, > + pte_t *ptep, pte_t pte) > +{ > + set_pte_at(mm, addr, ptep, pte); > +} > #endif > > #endif /* _ASM_GENERIC_HUGETLB_H */ >