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,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 EA2BCC83003 for ; Wed, 29 Apr 2020 12:13:49 +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 C04A72087E for ; Wed, 29 Apr 2020 12:13:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="kP/ztcIf"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="ALp5PpxP" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C04A72087E 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-riscv-bounces+infradead-linux-riscv=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:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-Id:Date :Subject:To:From:Reply-To:Content-Type:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=4VOC9c22GwF7JvIEh6BsOvRINwCgcbJHoAf5VCAD3Ro=; b=kP/ztcIfdRoifu gYpiRXpdzUat+1eFwep9MNDpNTCmDQiL/0qF7zDLgI3XeK3zlFgtfgbmlyOFljYS5RktdsoxdM+Hn frXCOlhmdbLX9bsLCXME/SvjB64s2EANYlm7KDwBO00mBybdmysBkeIy1MygRxHfvOR5bu12wnmvf +/4LrZZmVBIw032KdHuZi6Xj3+eS6BsZ5P4IefbafQ4JsmlzZcMHb3iDCYbjRGAZZBBHN5gGns66T d8nA5ayE0uNNMCT2A8HAPBZcGUfM6AZslWj7beZ7/14smldH4WxoOTz1d6Stgv/QOFa1ItdEKh5Gf vyJ8vZKVdkjxDl7C5Paw==; 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 1jTlb1-00006i-2k; Wed, 29 Apr 2020 12:13:47 +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 1jTlay-00005d-7d; Wed, 29 Apr 2020 12:13:45 +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 7F1FA214D8; Wed, 29 Apr 2020 12:13:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588162423; bh=+eh0ZniRrmTj98z2ldVRyODRepbhef9bdySLHYLC36Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ALp5PpxP+Le/5/FwwKgmfwsK9ZC7iZx2hdotHL5WhqX6Tvm6+pzUNvWtSL8Jcbt0I dwBb1DtkLEYsYALzsT1zNk6SYrG1+g+pcpeOFGZYDaBQQ3YhKG35DKpS8xFIVCGbaa 2GgYvL1DtePa04AomsfseLElRE26lX4Qg/XV4QKg= From: Mike Rapoport To: linux-kernel@vger.kernel.org Subject: [PATCH v2 07/20] arm: simplify detection of memory zone boundaries Date: Wed, 29 Apr 2020 15:11:13 +0300 Message-Id: <20200429121126.17989-8-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 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200429_051344_313002_3A21FC04 X-CRM114-Status: GOOD ( 13.80 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: 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" Sender: "linux-riscv" Errors-To: linux-riscv-bounces+infradead-linux-riscv=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/arm/mm/init.c | 66 +++++----------------------------------------- 1 file changed, 7 insertions(+), 59 deletions(-) diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 054be44d1cdb..4e43455fab84 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -92,18 +92,6 @@ EXPORT_SYMBOL(arm_dma_zone_size); */ phys_addr_t arm_dma_limit; unsigned long arm_dma_pfn_limit; - -static void __init arm_adjust_dma_zone(unsigned long *size, unsigned long *hole, - unsigned long dma_size) -{ - if (size[0] <= dma_size) - return; - - size[ZONE_NORMAL] = size[0] - dma_size; - size[ZONE_DMA] = dma_size; - hole[ZONE_NORMAL] = hole[0]; - hole[ZONE_DMA] = 0; -} #endif void __init setup_dma_zone(const struct machine_desc *mdesc) @@ -121,56 +109,16 @@ void __init setup_dma_zone(const struct machine_desc *mdesc) static void __init zone_sizes_init(unsigned long min, unsigned long max_low, unsigned long max_high) { - unsigned long zone_size[MAX_NR_ZONES], zhole_size[MAX_NR_ZONES]; - struct memblock_region *reg; - - /* - * initialise the zones. - */ - memset(zone_size, 0, sizeof(zone_size)); + unsigned long max_zone_pfn[MAX_NR_ZONES] = { 0 }; - /* - * The memory size has already been determined. If we need - * to do anything fancy with the allocation of this memory - * to the zones, now is the time to do it. - */ - zone_size[0] = max_low - min; -#ifdef CONFIG_HIGHMEM - zone_size[ZONE_HIGHMEM] = max_high - max_low; +#ifdef CONFIG_ZONE_DMA + max_zone_pfn[ZONE_DMA] = min(arm_dma_pfn_limit, max_low); #endif - - /* - * Calculate the size of the holes. - * holes = node_size - sum(bank_sizes) - */ - memcpy(zhole_size, zone_size, sizeof(zhole_size)); - for_each_memblock(memory, reg) { - unsigned long start = memblock_region_memory_base_pfn(reg); - unsigned long end = memblock_region_memory_end_pfn(reg); - - if (start < max_low) { - unsigned long low_end = min(end, max_low); - zhole_size[0] -= low_end - start; - } + max_zone_pfn[ZONE_NORMAL] = max_low; #ifdef CONFIG_HIGHMEM - if (end > max_low) { - unsigned long high_start = max(start, max_low); - zhole_size[ZONE_HIGHMEM] -= end - high_start; - } + max_zone_pfn[ZONE_HIGHMEM] = max_high; #endif - } - -#ifdef CONFIG_ZONE_DMA - /* - * Adjust the sizes according to any special requirements for - * this machine type. - */ - if (arm_dma_zone_size) - arm_adjust_dma_zone(zone_size, zhole_size, - arm_dma_zone_size >> PAGE_SHIFT); -#endif - - free_area_init_node(0, zone_size, min, zhole_size); + free_area_init(max_zone_pfn); } #ifdef CONFIG_HAVE_ARCH_PFN_VALID @@ -306,7 +254,7 @@ void __init bootmem_init(void) sparse_init(); /* - * Now free the memory - free_area_init_node needs + * Now free the memory - free_area_init needs * the sparse mem_map arrays initialized by sparse_init() * for memmap_init_zone(), otherwise all PFNs are invalid. */ -- 2.26.1