From patchwork Thu May 2 15:28:41 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 10927175 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 01B8614DB for ; Thu, 2 May 2019 15:30:26 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E5742212DA for ; Thu, 2 May 2019 15:30:25 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E2B8C2239C; Thu, 2 May 2019 15:30:25 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6596821327 for ; Thu, 2 May 2019 15:30:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728727AbfEBPaY (ORCPT ); Thu, 2 May 2019 11:30:24 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:56628 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728726AbfEBPaX (ORCPT ); Thu, 2 May 2019 11:30:23 -0400 Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x42FTp9E076228 for ; Thu, 2 May 2019 11:30:22 -0400 Received: from e06smtp04.uk.ibm.com (e06smtp04.uk.ibm.com [195.75.94.100]) by mx0a-001b2d01.pphosted.com with ESMTP id 2s81chnvuk-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 02 May 2019 11:30:22 -0400 Received: from localhost by e06smtp04.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Thu, 2 May 2019 16:30:09 +0100 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x42FU8jp55836830 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 2 May 2019 15:30:08 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id CA539A405C; Thu, 2 May 2019 15:30:08 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 56A14A405B; Thu, 2 May 2019 15:30:04 +0000 (GMT) Received: from rapoport-lnx (unknown [9.148.205.209]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Thu, 2 May 2019 15:30:04 +0000 (GMT) Received: by rapoport-lnx (sSMTP sendmail emulation); Thu, 02 May 2019 18:30:03 +0300 From: Mike Rapoport To: Andrew Morton Cc: Arnd Bergmann , Catalin Marinas , Geert Uytterhoeven , Greentime Hu , Guan Xuetao , Guo Ren , Helge Deller , Ley Foon Tan , Matthew Wilcox , Matt Turner , Michael Ellerman , Michal Hocko , Palmer Dabbelt , Paul Burton , Richard Kuo , Richard Weinberger , Russell King , Sam Creasey , x86@kernel.org, linux-alpha@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-hexagon@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-um@lists.infradead.org, nios2-dev@lists.rocketboards.org, Mike Rapoport Subject: [PATCH 14/15] um: switch to generic version of pte allocation Date: Thu, 2 May 2019 18:28:41 +0300 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1556810922-20248-1-git-send-email-rppt@linux.ibm.com> References: <1556810922-20248-1-git-send-email-rppt@linux.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 19050215-0016-0000-0000-00000277A131 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19050215-0017-0000-0000-000032D43641 Message-Id: <1556810922-20248-15-git-send-email-rppt@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-05-02_08:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=2 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=792 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1905020103 Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP um allocates PTE pages with __get_free_page() and uses GFP_KERNEL | __GFP_ZERO for the allocations. Switch it to the generic version that does exactly the same thing for the kernel page tables and adds __GFP_ACCOUNT for the user PTEs. The pte_free() and pte_free_kernel() versions are identical to the generic ones and can be simply dropped. Signed-off-by: Mike Rapoport Reviewed-by: Anton Ivanov Acked-by: Anton Ivanov --- arch/um/include/asm/pgalloc.h | 16 ++-------------- arch/um/kernel/mem.c | 22 ---------------------- 2 files changed, 2 insertions(+), 36 deletions(-) diff --git a/arch/um/include/asm/pgalloc.h b/arch/um/include/asm/pgalloc.h index 99eb568..d7b282e 100644 --- a/arch/um/include/asm/pgalloc.h +++ b/arch/um/include/asm/pgalloc.h @@ -10,6 +10,8 @@ #include +#include /* for pte_{alloc,free}_one */ + #define pmd_populate_kernel(mm, pmd, pte) \ set_pmd(pmd, __pmd(_PAGE_TABLE + (unsigned long) __pa(pte))) @@ -25,20 +27,6 @@ extern pgd_t *pgd_alloc(struct mm_struct *); extern void pgd_free(struct mm_struct *mm, pgd_t *pgd); -extern pte_t *pte_alloc_one_kernel(struct mm_struct *); -extern pgtable_t pte_alloc_one(struct mm_struct *); - -static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) -{ - free_page((unsigned long) pte); -} - -static inline void pte_free(struct mm_struct *mm, pgtable_t pte) -{ - pgtable_page_dtor(pte); - __free_page(pte); -} - #define __pte_free_tlb(tlb,pte, address) \ do { \ pgtable_page_dtor(pte); \ diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c index 99aa11b..2280374 100644 --- a/arch/um/kernel/mem.c +++ b/arch/um/kernel/mem.c @@ -215,28 +215,6 @@ void pgd_free(struct mm_struct *mm, pgd_t *pgd) free_page((unsigned long) pgd); } -pte_t *pte_alloc_one_kernel(struct mm_struct *mm) -{ - pte_t *pte; - - pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO); - return pte; -} - -pgtable_t pte_alloc_one(struct mm_struct *mm) -{ - struct page *pte; - - pte = alloc_page(GFP_KERNEL|__GFP_ZERO); - if (!pte) - return NULL; - if (!pgtable_page_ctor(pte)) { - __free_page(pte); - return NULL; - } - return pte; -} - #ifdef CONFIG_3_LEVEL_PGTABLES pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address) {