From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EC86AC43441 for ; Sun, 25 Nov 2018 21:47:25 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4948C2082E for ; Sun, 25 Nov 2018 21:47:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4948C2082E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4333YR0t2bzDqK6 for ; Mon, 26 Nov 2018 08:47:23 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.ibm.com Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=linux.ibm.com (client-ip=148.163.158.5; helo=mx0a-001b2d01.pphosted.com; envelope-from=rppt@linux.ibm.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.ibm.com Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4333Vf6jZ4zDqmd for ; Mon, 26 Nov 2018 08:44:55 +1100 (AEDT) Received: from pps.filterd (m0098419.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id wAPLi66d035815 for ; Sun, 25 Nov 2018 16:44:53 -0500 Received: from e06smtp05.uk.ibm.com (e06smtp05.uk.ibm.com [195.75.94.101]) by mx0b-001b2d01.pphosted.com with ESMTP id 2nyn6k6qwn-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Sun, 25 Nov 2018 16:44:52 -0500 Received: from localhost by e06smtp05.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) Sun, 25 Nov 2018 21:44:43 -0000 Received: from d06av25.portsmouth.uk.ibm.com (d06av25.portsmouth.uk.ibm.com [9.149.105.61]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id wAPLihL245219980 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Sun, 25 Nov 2018 21:44:43 GMT Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DC2B811C054; Sun, 25 Nov 2018 21:44:42 +0000 (GMT) Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9EEAD11C04C; Sun, 25 Nov 2018 21:44:39 +0000 (GMT) Received: from rapoport-lnx (unknown [9.148.207.68]) by d06av25.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Sun, 25 Nov 2018 21:44:39 +0000 (GMT) Received: by rapoport-lnx (sSMTP sendmail emulation); Sun, 25 Nov 2018 23:44:38 +0200 From: Mike Rapoport To: linux-kernel@vger.kernel.org Subject: [PATCH 0/5] memblock: simplify several early memory allocations Date: Sun, 25 Nov 2018 23:44:32 +0200 X-Mailer: git-send-email 2.7.4 X-TM-AS-GCONF: 00 x-cbid: 18112521-0020-0000-0000-000002ED8573 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18112521-0021-0000-0000-0000213CCEAF Message-Id: <1543182277-8819-1-git-send-email-rppt@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2018-11-25_15:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=3 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=619 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1811250133 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Michal Hocko , linux-sh@vger.kernel.org, linux-mm@kvack.org, Rich Felker , Paul Mackerras , sparclinux@vger.kernel.org, Vincent Chen , Jonas Bonn , linux-c6x-dev@linux-c6x.org, Yoshinori Sato , Russell King , Mike Rapoport , Mark Salter , Arnd Bergmann , Stefan Kristiansson , openrisc@lists.librecores.org, Greentime Hu , Stafford Horne , Guan Xuetao , linux-arm-kernel@lists.infradead.org, Michal Simek , Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S. Miller" Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Hi, These patches simplify some of the early memory allocations by replacing usage of older memblock APIs with newer and shinier ones. Quite a few places in the arch/ code allocated memory using a memblock API that returns a physical address of the allocated area, then converted this physical address to a virtual one and then used memset(0) to clear the allocated range. More recent memblock APIs do all the three steps in one call and their usage simplifies the code. It's important to note that regardless of API used, the core allocation is nearly identical for any set of memblock allocators: first it tries to find a free memory with all the constraints specified by the caller and then falls back to the allocation with some or all constraints disabled. The first three patches perform the conversion of call sites that have exact requirements for the node and the possible memory range. The fourth patch is a bit one-off as it simplifies openrisc's implementation of pte_alloc_one_kernel(), and not only the memblock usage. The fifth patch takes care of simpler cases when the allocation can be satisfied with a simple call to memblock_alloc(). Mike Rapoport (5): powerpc: prefer memblock APIs returning virtual address microblaze: prefer memblock API returning virtual address sh: prefer memblock APIs returning virtual address openrisc: simplify pte_alloc_one_kernel() arch: simplify several early memory allocations arch/arm/mm/mmu.c | 4 +--- arch/c6x/mm/dma-coherent.c | 9 ++------- arch/microblaze/mm/init.c | 5 +++-- arch/nds32/mm/init.c | 12 ++++-------- arch/openrisc/mm/ioremap.c | 11 ++++------- arch/powerpc/kernel/paca.c | 14 ++++++-------- arch/powerpc/kernel/setup-common.c | 4 ++-- arch/powerpc/kernel/setup_64.c | 21 ++++++++++----------- arch/powerpc/mm/hash_utils_64.c | 6 +++--- arch/powerpc/mm/pgtable-book3e.c | 8 ++------ arch/powerpc/mm/pgtable-book3s64.c | 5 +---- arch/powerpc/mm/pgtable-radix.c | 24 +++++++++--------------- arch/powerpc/mm/pgtable_32.c | 4 +--- arch/powerpc/mm/ppc_mmu_32.c | 3 +-- arch/powerpc/platforms/pasemi/iommu.c | 5 +++-- arch/powerpc/platforms/powernv/opal.c | 3 +-- arch/powerpc/platforms/pseries/setup.c | 11 +++++++---- arch/powerpc/sysdev/dart_iommu.c | 5 +++-- arch/sh/mm/init.c | 18 +++++------------- arch/sh/mm/numa.c | 5 ++--- arch/sparc/kernel/prom_64.c | 7 ++----- arch/sparc/mm/init_64.c | 9 +++------ arch/unicore32/mm/mmu.c | 4 +--- 23 files changed, 76 insertions(+), 121 deletions(-) -- 2.7.4