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=-10.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 D6B44C83003 for ; Wed, 29 Apr 2020 12:14:17 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 A825C2074A for ; Wed, 29 Apr 2020 12:14:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="M0w1piwU"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="Gete5mVf" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A825C2074A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-snps-arc-bounces+linux-snps-arc=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=7ljqkTSzHhmblfqu1zjRUnDf1qFlvSXg1hHLEHu8stQ=; b=M0w1piwURia5JJ YdrILmEiPT1GWDXHZalXvXAivFHHUOD/ntQun1s7EVX/wEwbO8Tf7+btXqKUt63mtduqH3hVhUpL5 dsx/cI5JDuZ1gIxdLVVpIpX7aL1Wzwvm3JziTGp5Co5EBqs8QeQ3UjypRPFkJmy7DC2U9CeyruzrS oyuMwb1mvmAQt6KO3uKSqPB8dOMIv3W67BXeYlFmr0AwbpmBgXP2SPM1mFnz10lXHkvmjNCiZq8ca 9TskxJ0UoK97nBJu8nnwRzh3dSCiW9BwLDGANzQUl7kZ+BT97/rO6Qi281IwIONjhwJmKbYHIibgy xtbJeR3GV/uEbaGiuZiQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jTlbU-0000NC-MJ; Wed, 29 Apr 2020 12:14:16 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jTlbP-0000Kp-TG; Wed, 29 Apr 2020 12:14:13 +0000 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 3CBD82173E; Wed, 29 Apr 2020 12:13:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588162451; bh=b/YG7nYMld8qqhXfwVvj4aAyq9ECF9kG36OPoge17nk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Gete5mVfqPQzNVgaU0yDv63MEoXH9QTEuXfoT8T9XALYibDtnhNlr5vwRWl5WZhhE SHyUJw3hjEQKTV/pov/LM+Ar3n0IQB+On1WP1Nb+C190mk5i4q7MGiObjTCQ7YZNwi Jl/L/YwtBwGOKQakUeBhGOPCwTzZ4vnShoJFvTVM= From: Mike Rapoport To: linux-kernel@vger.kernel.org Subject: [PATCH v2 09/20] csky: simplify detection of memory zone boundaries Date: Wed, 29 Apr 2020 15:11:15 +0300 Message-Id: <20200429121126.17989-10-rppt@kernel.org> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200429121126.17989-1-rppt@kernel.org> References: <20200429121126.17989-1-rppt@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200429_051411_998955_AA7138EB X-CRM114-Status: GOOD ( 13.57 ) X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on Synopsys ARC Processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Rich Felker , linux-ia64@vger.kernel.org, linux-doc@vger.kernel.org, Catalin Marinas , Heiko Carstens , Michal Hocko , "James E.J. Bottomley" , Max Filippov , Guo Ren , linux-csky@vger.kernel.org, linux-parisc@vger.kernel.org, sparclinux@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-riscv@lists.infradead.org, Mike Rapoport , Greg Ungerer , linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, linux-c6x-dev@linux-c6x.org, Baoquan He , Jonathan Corbet , linux-sh@vger.kernel.org, Michael Ellerman , Helge Deller , x86@kernel.org, Russell King , Ley Foon Tan , Yoshinori Sato , Geert Uytterhoeven , linux-arm-kernel@lists.infradead.org, Mark Salter , Matt Turner , linux-snps-arc@lists.infradead.org, uclinux-h8-devel@lists.sourceforge.jp, linux-xtensa@linux-xtensa.org, linux-alpha@vger.kernel.org, linux-um@lists.infradead.org, linux-m68k@lists.linux-m68k.org, Tony Luck , Qian Cai , Greentime Hu , Paul Walmsley , Stafford Horne , Guan Xuetao , Hoan Tran , Michal Simek , Thomas Bogendoerfer , Brian Cain , Nick Hu , linux-mm@kvack.org, Vineet Gupta , linux-mips@vger.kernel.org, openrisc@lists.librecores.org, Richard Weinberger , Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S. Miller" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+linux-snps-arc=archiver.kernel.org@lists.infradead.org From: Mike Rapoport The free_area_init() function only requires the definition of maximal PFN for each of the supported zone rater than calculation of actual zone sizes and the sizes of the holes between the zones. After removal of CONFIG_HAVE_MEMBLOCK_NODE_MAP the free_area_init() is available to all architectures. Using this function instead of free_area_init_node() simplifies the zone detection. Signed-off-by: Mike Rapoport --- arch/csky/kernel/setup.c | 26 +++++++++++--------------- 1 file changed, 11 insertions(+), 15 deletions(-) diff --git a/arch/csky/kernel/setup.c b/arch/csky/kernel/setup.c index 819a9a7bf786..0481f4e34538 100644 --- a/arch/csky/kernel/setup.c +++ b/arch/csky/kernel/setup.c @@ -26,7 +26,9 @@ struct screen_info screen_info = { static void __init csky_memblock_init(void) { - unsigned long zone_size[MAX_NR_ZONES]; + unsigned long lowmem_size = PFN_DOWN(LOWMEM_LIMIT - PHYS_OFFSET_OFFSET); + unsigned long sseg_size = PFN_DOWN(SSEG_SIZE - PHYS_OFFSET_OFFSET); + unsigned long max_zone_pfn[MAX_NR_ZONES] = { 0 }; signed long size; memblock_reserve(__pa(_stext), _end - _stext); @@ -36,28 +38,22 @@ static void __init csky_memblock_init(void) memblock_dump_all(); - memset(zone_size, 0, sizeof(zone_size)); - min_low_pfn = PFN_UP(memblock_start_of_DRAM()); max_low_pfn = max_pfn = PFN_DOWN(memblock_end_of_DRAM()); size = max_pfn - min_low_pfn; - if (size <= PFN_DOWN(SSEG_SIZE - PHYS_OFFSET_OFFSET)) - zone_size[ZONE_NORMAL] = size; - else if (size < PFN_DOWN(LOWMEM_LIMIT - PHYS_OFFSET_OFFSET)) { - zone_size[ZONE_NORMAL] = - PFN_DOWN(SSEG_SIZE - PHYS_OFFSET_OFFSET); - max_low_pfn = min_low_pfn + zone_size[ZONE_NORMAL]; - } else { - zone_size[ZONE_NORMAL] = - PFN_DOWN(LOWMEM_LIMIT - PHYS_OFFSET_OFFSET); - max_low_pfn = min_low_pfn + zone_size[ZONE_NORMAL]; + if (size >= lowmem_size) { + max_low_pfn = min_low_pfn + lowmem_size; write_mmu_msa1(read_mmu_msa0() + SSEG_SIZE); + } else if (size > sseg_size) { + max_low_pfn = min_low_pfn + sseg_size; } + max_zone_pfn[ZONE_NORMAL] = max_low_pfn; + #ifdef CONFIG_HIGHMEM - zone_size[ZONE_HIGHMEM] = max_pfn - max_low_pfn; + max_zone_pfn[ZONE_HIGHMEM] = max_pfn; highstart_pfn = max_low_pfn; highend_pfn = max_pfn; @@ -66,7 +62,7 @@ static void __init csky_memblock_init(void) dma_contiguous_reserve(0); - free_area_init_node(0, zone_size, min_low_pfn, NULL); + free_area_init(max_zone_pfn); } void __init setup_arch(char **cmdline_p) -- 2.26.1 _______________________________________________ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc