From patchwork Sun Apr 12 19:48:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 11484705 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 40973112C for ; Sun, 12 Apr 2020 19:50:33 +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 106DB2072D for ; Sun, 12 Apr 2020 19:50:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="g85VPMAN"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="e/KmJfNT" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 106DB2072D 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+patchwork-linux-riscv=patchwork.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=TN2eWKfImpY77g99qHyIjpIFmZ/xa/cN9tsnADlQFKw=; b=g85VPMANhbnsg4 uqCjFEa8AC1GCJnboGtgKkpek2H5OFhj92JF/517HDA8TMPy/fMyjYvNJTADWI3t1m0yEk/tZPXz9 qXfzBgevLsWfkT8QOsV0h723+XzZzIZo2gZzrZFIZk4Sk62gw6+JcX5XepRDDhoJIXzq8Zq493GHs jlU3k7DLSNJSoy6AC8VDf3gvGs+0I1nsYRwHuwM+9+g30ZiFwTbSiCB+fv3bCqxIZCd4+a8P66W0v M5NnAky0M+3C7M4F2J2wVngkPAGIFcYT3r27VaKrynA0n9TbdZV5H4emYg+Fpd+EGJy6LFLyQ0QsQ snVohDLqf9q7llbMAt1w==; 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 1jNice-0003Es-Ct; Sun, 12 Apr 2020 19:50:28 +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 1jNicY-000380-6I; Sun, 12 Apr 2020 19:50:24 +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 0CA262076B; Sun, 12 Apr 2020 19:50:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586721021; bh=+Yimhk+Z3s/ewzpZFVFmXWEqowGVQrDoEckJQ2TFVPU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=e/KmJfNT7d05PBeVZLu6sixTt+Dw3CeLA56v4OyfYGfB5rMpMz4zugaJGpBq69CvD z4Y36ssqPv6xn+8xvISkgxL6hPX7p0WLVdR9AEGSA1ZS65IVuWCedFtkSMr87DsfNw ISGsVMrNjElBJO9vORMrbHDCJ6FF++1BTyMcWdcs= From: Mike Rapoport To: linux-kernel@vger.kernel.org Subject: [PATCH 04/21] mm: free_area_init: use maximal zone PFNs rather than zone sizes Date: Sun, 12 Apr 2020 22:48:42 +0300 Message-Id: <20200412194859.12663-5-rppt@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200412194859.12663-1-rppt@kernel.org> References: <20200412194859.12663-1-rppt@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200412_125022_361150_FB1C8495 X-CRM114-Status: GOOD ( 16.22 ) X-Spam-Score: -5.2 (-----) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-5.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [198.145.29.99 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender 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 , 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" , Mike Rapoport Sender: "linux-riscv" Errors-To: linux-riscv-bounces+patchwork-linux-riscv=patchwork.kernel.org@lists.infradead.org From: Mike Rapoport Currently, architectures that use free_area_init() to initialize memory map and node and zone structures need to calculate zone and hole sizes. We can use free_area_init_nodes() instead and let it detect the zone boundaries while the architectures will only have to supply the possible limits for the zones. Signed-off-by: Mike Rapoport Reviewed-by: Baoquan He Signed-off-by: Angelo Dureghello Signed-off-by: Mike Rapoport --- arch/alpha/mm/init.c | 16 ++++++---------- arch/c6x/mm/init.c | 8 +++----- arch/h8300/mm/init.c | 6 +++--- arch/hexagon/mm/init.c | 6 +++--- arch/m68k/mm/init.c | 6 +++--- arch/m68k/mm/mcfmmu.c | 9 +++------ arch/nds32/mm/init.c | 11 ++++------- arch/nios2/mm/init.c | 8 +++----- arch/openrisc/mm/init.c | 9 +++------ arch/um/kernel/mem.c | 12 ++++-------- include/linux/mm.h | 2 +- mm/page_alloc.c | 5 ++--- 12 files changed, 38 insertions(+), 60 deletions(-) diff --git a/arch/alpha/mm/init.c b/arch/alpha/mm/init.c index 12e218d3792a..667cd21393b5 100644 --- a/arch/alpha/mm/init.c +++ b/arch/alpha/mm/init.c @@ -243,21 +243,17 @@ callback_init(void * kernel_end) */ void __init paging_init(void) { - unsigned long zones_size[MAX_NR_ZONES] = {0, }; - unsigned long dma_pfn, high_pfn; + unsigned long max_zone_pfn[MAX_NR_ZONES] = {0, }; + unsigned long dma_pfn; dma_pfn = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT; - high_pfn = max_pfn = max_low_pfn; + max_pfn = max_low_pfn; - if (dma_pfn >= high_pfn) - zones_size[ZONE_DMA] = high_pfn; - else { - zones_size[ZONE_DMA] = dma_pfn; - zones_size[ZONE_NORMAL] = high_pfn - dma_pfn; - } + max_zone_pfn[ZONE_DMA] = dma_pfn; + max_zone_pfn[ZONE_NORMAL] = max_pfn; /* Initialize mem_map[]. */ - free_area_init(zones_size); + free_area_init(max_zone_pfn); /* Initialize the kernel's ZERO_PGE. */ memset((void *)ZERO_PGE, 0, PAGE_SIZE); diff --git a/arch/c6x/mm/init.c b/arch/c6x/mm/init.c index 9b374393a8f4..a97e51a3e26d 100644 --- a/arch/c6x/mm/init.c +++ b/arch/c6x/mm/init.c @@ -33,7 +33,7 @@ EXPORT_SYMBOL(empty_zero_page); void __init paging_init(void) { struct pglist_data *pgdat = NODE_DATA(0); - unsigned long zones_size[MAX_NR_ZONES] = {0, }; + unsigned long max_zone_pfn[MAX_NR_ZONES] = {0, }; empty_zero_page = (unsigned long) memblock_alloc(PAGE_SIZE, PAGE_SIZE); @@ -49,11 +49,9 @@ void __init paging_init(void) /* * Define zones */ - zones_size[ZONE_NORMAL] = (memory_end - PAGE_OFFSET) >> PAGE_SHIFT; - pgdat->node_zones[ZONE_NORMAL].zone_start_pfn = - __pa(PAGE_OFFSET) >> PAGE_SHIFT; + max_zone_pfn[ZONE_NORMAL] = memory_end >> PAGE_SHIFT; - free_area_init(zones_size); + free_area_init(max_zone_pfn); } void __init mem_init(void) diff --git a/arch/h8300/mm/init.c b/arch/h8300/mm/init.c index 1eab16b1a0bc..27a0020e3771 100644 --- a/arch/h8300/mm/init.c +++ b/arch/h8300/mm/init.c @@ -83,10 +83,10 @@ void __init paging_init(void) start_mem, end_mem); { - unsigned long zones_size[MAX_NR_ZONES] = {0, }; + unsigned long max_zone_pfn[MAX_NR_ZONES] = {0, }; - zones_size[ZONE_NORMAL] = (end_mem - PAGE_OFFSET) >> PAGE_SHIFT; - free_area_init(zones_size); + max_zone_pfn[ZONE_NORMAL] = end_mem >> PAGE_SHIFT; + free_area_init(max_zone_pfn); } } diff --git a/arch/hexagon/mm/init.c b/arch/hexagon/mm/init.c index c961773a6fff..f2e6c868e477 100644 --- a/arch/hexagon/mm/init.c +++ b/arch/hexagon/mm/init.c @@ -91,7 +91,7 @@ void sync_icache_dcache(pte_t pte) */ void __init paging_init(void) { - unsigned long zones_sizes[MAX_NR_ZONES] = {0, }; + unsigned long max_zone_pfn[MAX_NR_ZONES] = {0, }; /* * This is not particularly well documented anywhere, but @@ -101,9 +101,9 @@ void __init paging_init(void) * adjust accordingly. */ - zones_sizes[ZONE_NORMAL] = max_low_pfn; + max_zone_pfn[ZONE_NORMAL] = max_low_pfn; - free_area_init(zones_sizes); /* sets up the zonelists and mem_map */ + free_area_init(max_zone_pfn); /* sets up the zonelists and mem_map */ /* * Start of high memory area. Will probably need something more diff --git a/arch/m68k/mm/init.c b/arch/m68k/mm/init.c index b88d510d4fe3..6d3147662ff2 100644 --- a/arch/m68k/mm/init.c +++ b/arch/m68k/mm/init.c @@ -84,7 +84,7 @@ void __init paging_init(void) * page_alloc get different views of the world. */ unsigned long end_mem = memory_end & PAGE_MASK; - unsigned long zones_size[MAX_NR_ZONES] = { 0, }; + unsigned long max_zone_pfn[MAX_NR_ZONES] = { 0, }; high_memory = (void *) end_mem; @@ -98,8 +98,8 @@ void __init paging_init(void) */ set_fs (USER_DS); - zones_size[ZONE_DMA] = (end_mem - PAGE_OFFSET) >> PAGE_SHIFT; - free_area_init(zones_size); + max_zone_pfn[ZONE_DMA] = end_mem >> PAGE_SHIFT; + free_area_init(max_zone_pfn); } #endif /* CONFIG_MMU */ diff --git a/arch/m68k/mm/mcfmmu.c b/arch/m68k/mm/mcfmmu.c index 0ea375607767..80064e6d064f 100644 --- a/arch/m68k/mm/mcfmmu.c +++ b/arch/m68k/mm/mcfmmu.c @@ -39,7 +39,7 @@ void __init paging_init(void) pte_t *pg_table; unsigned long address, size; unsigned long next_pgtable, bootmem_end; - unsigned long zones_size[MAX_NR_ZONES]; + unsigned long max_zone_pfn[MAX_NR_ZONES] = { 0 }; enum zone_type zone; int i; @@ -80,11 +80,8 @@ void __init paging_init(void) } current->mm = NULL; - - for (zone = 0; zone < MAX_NR_ZONES; zone++) - zones_size[zone] = 0x0; - zones_size[ZONE_DMA] = num_pages; - free_area_init(zones_size); + max_zone_pfn[ZONE_DMA] = PFN_DOWN(_ramend); + free_area_init(max_zone_pfn); } int cf_tlb_miss(struct pt_regs *regs, int write, int dtlb, int extension_word) diff --git a/arch/nds32/mm/init.c b/arch/nds32/mm/init.c index 0be3833f6814..91147cca4b64 100644 --- a/arch/nds32/mm/init.c +++ b/arch/nds32/mm/init.c @@ -31,16 +31,13 @@ EXPORT_SYMBOL(empty_zero_page); static void __init zone_sizes_init(void) { - unsigned long zones_size[MAX_NR_ZONES]; + unsigned long max_zone_pfn[MAX_NR_ZONES] = { 0 }; - /* Clear the zone sizes */ - memset(zones_size, 0, sizeof(zones_size)); - - zones_size[ZONE_NORMAL] = max_low_pfn; + max_zone_pfn[ZONE_NORMAL] = max_low_pfn; #ifdef CONFIG_HIGHMEM - zones_size[ZONE_HIGHMEM] = max_pfn; + max_zone_pfn[ZONE_HIGHMEM] = max_pfn; #endif - free_area_init(zones_size); + free_area_init(max_zone_pfn); } diff --git a/arch/nios2/mm/init.c b/arch/nios2/mm/init.c index 2c609c2516b2..9afca77d10b1 100644 --- a/arch/nios2/mm/init.c +++ b/arch/nios2/mm/init.c @@ -46,17 +46,15 @@ pgd_t *pgd_current; */ void __init paging_init(void) { - unsigned long zones_size[MAX_NR_ZONES]; - - memset(zones_size, 0, sizeof(zones_size)); + unsigned long max_zone_pfn[MAX_NR_ZONES] = { 0 }; pagetable_init(); pgd_current = swapper_pg_dir; - zones_size[ZONE_NORMAL] = max_mapnr; + max_zone_pfn[ZONE_NORMAL] = max_mapnr; /* pass the memory from the bootmem allocator to the main allocator */ - free_area_init(zones_size); + free_area_init(max_zone_pfn); flush_dcache_range((unsigned long)empty_zero_page, (unsigned long)empty_zero_page + PAGE_SIZE); diff --git a/arch/openrisc/mm/init.c b/arch/openrisc/mm/init.c index 1f87b524db78..f94fe6d3f499 100644 --- a/arch/openrisc/mm/init.c +++ b/arch/openrisc/mm/init.c @@ -45,17 +45,14 @@ DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); static void __init zone_sizes_init(void) { - unsigned long zones_size[MAX_NR_ZONES]; - - /* Clear the zone sizes */ - memset(zones_size, 0, sizeof(zones_size)); + unsigned long max_zone_pfn[MAX_NR_ZONES] = { 0 }; /* * We use only ZONE_NORMAL */ - zones_size[ZONE_NORMAL] = max_low_pfn; + max_zone_pfn[ZONE_NORMAL] = max_low_pfn; - free_area_init(zones_size); + free_area_init(max_zone_pfn); } extern const char _s_kernel_ro[], _e_kernel_ro[]; diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c index 30885d0b94ac..401b22f14743 100644 --- a/arch/um/kernel/mem.c +++ b/arch/um/kernel/mem.c @@ -158,8 +158,8 @@ static void __init fixaddr_user_init( void) void __init paging_init(void) { - unsigned long zones_size[MAX_NR_ZONES], vaddr; - int i; + unsigned long max_zone_pfn[MAX_NR_ZONES] = { 0 }; + unsigned long vaddr; empty_zero_page = (unsigned long *) memblock_alloc_low(PAGE_SIZE, PAGE_SIZE); @@ -167,12 +167,8 @@ void __init paging_init(void) panic("%s: Failed to allocate %lu bytes align=%lx\n", __func__, PAGE_SIZE, PAGE_SIZE); - for (i = 0; i < ARRAY_SIZE(zones_size); i++) - zones_size[i] = 0; - - zones_size[ZONE_NORMAL] = (end_iomem >> PAGE_SHIFT) - - (uml_physmem >> PAGE_SHIFT); - free_area_init(zones_size); + max_zone_pfn[ZONE_NORMAL] = end_iomem >> PAGE_SHIFT; + free_area_init(max_zone_pfn); /* * Fixed mappings, only the page table structure has to be diff --git a/include/linux/mm.h b/include/linux/mm.h index 5903bbbdb336..d9a256a97ac5 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2272,7 +2272,7 @@ static inline spinlock_t *pud_lock(struct mm_struct *mm, pud_t *pud) } extern void __init pagecache_init(void); -extern void free_area_init(unsigned long * zones_size); +extern void free_area_init(unsigned long * max_zone_pfn); extern void __init free_area_init_node(int nid, unsigned long * zones_size, unsigned long zone_start_pfn, unsigned long *zholes_size); extern void free_initmem(void); diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 4530e9cfd9f7..530701b38bc7 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -7700,11 +7700,10 @@ void __init set_dma_reserve(unsigned long new_dma_reserve) dma_reserve = new_dma_reserve; } -void __init free_area_init(unsigned long *zones_size) +void __init free_area_init(unsigned long *max_zone_pfn) { init_unavailable_mem(); - free_area_init_node(0, zones_size, - __pa(PAGE_OFFSET) >> PAGE_SHIFT, NULL); + free_area_init_nodes(max_zone_pfn); } static int page_alloc_cpu_dead(unsigned int cpu)