From patchwork Fri Nov 1 08:39:44 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 11222693 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 C3D09913 for ; Fri, 1 Nov 2019 08:41:53 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 82C2621855 for ; Fri, 1 Nov 2019 08:41:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="xDN/oYfq" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 82C2621855 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id A7E6E6B026A; Fri, 1 Nov 2019 04:41:52 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id A2E4B6B026B; Fri, 1 Nov 2019 04:41:52 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 944A06B026C; Fri, 1 Nov 2019 04:41:52 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0218.hostedemail.com [216.40.44.218]) by kanga.kvack.org (Postfix) with ESMTP id 747A06B026A for ; Fri, 1 Nov 2019 04:41:52 -0400 (EDT) Received: from smtpin05.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with SMTP id 1CCDE68BE for ; Fri, 1 Nov 2019 08:41:52 +0000 (UTC) X-FDA: 76107065664.05.rose12_678fa1a9a1109 X-Spam-Summary: 2,0,0,fc630cc2f9a16b80,d41d8cd98f00b204,rppt@kernel.org,::akpm@linux-foundation.org:anton.ivanov@cambridgegreys.com:arnd@arndb.de:davem@davemloft.net:geert@linux-m68k.org:green.hu@gmail.com:gerg@linux-m68k.org:deller@gmx.de:james.bottomley@hansenpartnership.com:jdike@addtoit.com:kirill@shutemov.name:torvalds@linux-foundation.org:msalter@redhat.com:mattst88@gmail.com:monstr@monstr.eu:peda@axentia.se:richard@nod.at:eike-kernel@sf-tec.de:linux@armlinux.org.uk:sammy@sammy.net:deanbo422@gmail.com:vineet.gupta1@synopsys.com:rppt@kernel.org:linux-alpha@vger.kernel.org:linux-arch@vger.kernel.org:linux-arm-kernel@lists.infradead.org:linux-c6x-dev@linux-c6x.org:linux-kernel@vger.kernel.org:linux-m68k@lists.linux-m68k.org:linux-parisc@vger.kernel.org:linux-um@lists.infradead.org:sparclinux@vger.kernel.org:rppt@linux.ibm.com,RULES_HIT:41:69:355:379:541:800:960:966:968:973:988:989:1260:1345:1359:1431:1437:1535:1544:1711:1730:1747:1777:1792:1801:1978:1981:2194:2196:2199:220 0:2393:2 X-HE-Tag: rose12_678fa1a9a1109 X-Filterd-Recvd-Size: 7037 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf17.hostedemail.com (Postfix) with ESMTP for ; Fri, 1 Nov 2019 08:41:51 +0000 (UTC) Received: from aquarius.haifa.ibm.com (nesher1.haifa.il.ibm.com [195.110.40.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8B8C7217F9; Fri, 1 Nov 2019 08:41:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1572597710; bh=0lGj0AI/IfAJbVTLRfdK6fD/lMA7GlT+qoua/5oNwys=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xDN/oYfqISunxv0VTK/om6jqzJocqdXTriMHJm1P+NqMT6Y/ALN8nHxLQXCfaHkdy RtA6uUV+Cw5RB2jOnf2+JpfiCOvEsDzOaFFCeVoBiP0n1wqhVNdYGRlvqk8jsJ7zxI uzkR+lXTbzGXzS8RlIb07uxyo4yxqPnB+LhVMVQw= From: Mike Rapoport To: linux-mm@kvack.org Cc: Andrew Morton , Anton Ivanov , Arnd Bergmann , "David S. Miller" , Geert Uytterhoeven , Greentime Hu , Greg Ungerer , Helge Deller , "James E.J. Bottomley" , Jeff Dike , "Kirill A. Shutemov" , Linus Torvalds , Mark Salter , Matt Turner , Michal Simek , Peter Rosin , Richard Weinberger , Rolf Eike Beer , Russell King , Sam Creasey , Vincent Chen , Vineet Gupta , Mike Rapoport , linux-alpha@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-c6x-dev@linux-c6x.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-parisc@vger.kernel.org, linux-um@lists.infradead.org, sparclinux@vger.kernel.org, Mike Rapoport Subject: [PATCH v2 13/13] mm: remove __ARCH_HAS_4LEVEL_HACK and include/asm-generic/4level-fixup.h Date: Fri, 1 Nov 2019 10:39:44 +0200 Message-Id: <1572597584-6390-14-git-send-email-rppt@kernel.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1572597584-6390-1-git-send-email-rppt@kernel.org> References: <1572597584-6390-1-git-send-email-rppt@kernel.org> X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Mike Rapoport There are no architectures that use include/asm-generic/4level-fixup.h therefore it can be removed along with __ARCH_HAS_4LEVEL_HACK define. Signed-off-by: Mike Rapoport --- include/asm-generic/4level-fixup.h | 40 -------------------------------------- include/asm-generic/tlb.h | 2 -- include/linux/mm.h | 10 +++++----- mm/memory.c | 8 -------- 4 files changed, 5 insertions(+), 55 deletions(-) delete mode 100644 include/asm-generic/4level-fixup.h diff --git a/include/asm-generic/4level-fixup.h b/include/asm-generic/4level-fixup.h deleted file mode 100644 index e3667c9..0000000 --- a/include/asm-generic/4level-fixup.h +++ /dev/null @@ -1,40 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _4LEVEL_FIXUP_H -#define _4LEVEL_FIXUP_H - -#define __ARCH_HAS_4LEVEL_HACK -#define __PAGETABLE_PUD_FOLDED 1 - -#define PUD_SHIFT PGDIR_SHIFT -#define PUD_SIZE PGDIR_SIZE -#define PUD_MASK PGDIR_MASK -#define PTRS_PER_PUD 1 - -#define pud_t pgd_t - -#define pmd_alloc(mm, pud, address) \ - ((unlikely(pgd_none(*(pud))) && __pmd_alloc(mm, pud, address))? \ - NULL: pmd_offset(pud, address)) - -#define pud_offset(pgd, start) (pgd) -#define pud_none(pud) 0 -#define pud_bad(pud) 0 -#define pud_present(pud) 1 -#define pud_ERROR(pud) do { } while (0) -#define pud_clear(pud) pgd_clear(pud) -#define pud_val(pud) pgd_val(pud) -#define pud_populate(mm, pud, pmd) pgd_populate(mm, pud, pmd) -#define pud_page(pud) pgd_page(pud) -#define pud_page_vaddr(pud) pgd_page_vaddr(pud) - -#undef pud_free_tlb -#define pud_free_tlb(tlb, x, addr) do { } while (0) -#define pud_free(mm, x) do { } while (0) -#define __pud_free_tlb(tlb, x, addr) do { } while (0) - -#undef pud_addr_end -#define pud_addr_end(addr, end) (end) - -#include - -#endif diff --git a/include/asm-generic/tlb.h b/include/asm-generic/tlb.h index 04c0644..5e0c2d0 100644 --- a/include/asm-generic/tlb.h +++ b/include/asm-generic/tlb.h @@ -584,7 +584,6 @@ static inline void tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vm } while (0) #endif -#ifndef __ARCH_HAS_4LEVEL_HACK #ifndef pud_free_tlb #define pud_free_tlb(tlb, pudp, address) \ do { \ @@ -594,7 +593,6 @@ static inline void tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vm __pud_free_tlb(tlb, pudp, address); \ } while (0) #endif -#endif #ifndef __ARCH_HAS_5LEVEL_HACK #ifndef p4d_free_tlb diff --git a/include/linux/mm.h b/include/linux/mm.h index cc29227..477b52a 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1850,12 +1850,12 @@ static inline void mm_dec_nr_ptes(struct mm_struct *mm) {} int __pte_alloc(struct mm_struct *mm, pmd_t *pmd); int __pte_alloc_kernel(pmd_t *pmd); +#if defined(CONFIG_MMU) + /* - * The following ifdef needed to get the 4level-fixup.h header to work. - * Remove it when 4level-fixup.h has been removed. + * The following ifdef needed to get the 5level-fixup.h header to work. + * Remove it when 5level-fixup.h has been removed. */ -#if defined(CONFIG_MMU) && !defined(__ARCH_HAS_4LEVEL_HACK) - #ifndef __ARCH_HAS_5LEVEL_HACK static inline p4d_t *p4d_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address) @@ -1877,7 +1877,7 @@ static inline pmd_t *pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long a return (unlikely(pud_none(*pud)) && __pmd_alloc(mm, pud, address))? NULL: pmd_offset(pud, address); } -#endif /* CONFIG_MMU && !__ARCH_HAS_4LEVEL_HACK */ +#endif /* CONFIG_MMU */ #if USE_SPLIT_PTE_PTLOCKS #if ALLOC_SPLIT_PTLOCKS diff --git a/mm/memory.c b/mm/memory.c index b1ca51a..50300f0 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -4095,19 +4095,11 @@ int __pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address) smp_wmb(); /* See comment in __pte_alloc */ ptl = pud_lock(mm, pud); -#ifndef __ARCH_HAS_4LEVEL_HACK if (!pud_present(*pud)) { mm_inc_nr_pmds(mm); pud_populate(mm, pud, new); } else /* Another has populated it */ pmd_free(mm, new); -#else - if (!pgd_present(*pud)) { - mm_inc_nr_pmds(mm); - pgd_populate(mm, pud, new); - } else /* Another has populated it */ - pmd_free(mm, new); -#endif /* __ARCH_HAS_4LEVEL_HACK */ spin_unlock(ptl); return 0; }