From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759065Ab1BPMVY (ORCPT ); Wed, 16 Feb 2011 07:21:24 -0500 Received: from mail-bw0-f46.google.com ([209.85.214.46]:36104 "EHLO mail-bw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759028Ab1BPMVU (ORCPT ); Wed, 16 Feb 2011 07:21:20 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:from:to:cc:subject:date:message-id:x-mailer:in-reply-to :references; b=oFsM0KpQKw7o6yV5ef/MK+flC1oh7843X/vRv6vlWpJBzQGe7Nj3SPYD/4d+NQkKWw B7m4rAsdB1GSAhoDVq3SqukCwIcnR6tePXugmPfWdBB5ovJu36VzwCar/Q7aKS/+fBiu nPPB22wKfSegPxpdt+qnF4yQudjuT1IfSeN9k= From: Tejun Heo To: linux-kernel@vger.kernel.org, x86@kernel.org, yinghai@kernel.org, brgerst@gmail.com, gorcunov@gmail.com, shaohui.zheng@intel.com, rientjes@google.com, mingo@elte.hu, hpa@linux.intel.com, ankita@in.ibm.com Cc: Tejun Heo Subject: [PATCH 03/33] x86, NUMA: Drop @start/last_pfn from initmem_init() Date: Wed, 16 Feb 2011 13:20:37 +0100 Message-Id: <1297858867-25981-4-git-send-email-tj@kernel.org> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1297858867-25981-1-git-send-email-tj@kernel.org> References: <1297858867-25981-1-git-send-email-tj@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org initmem_init() extensively accesses and modifies global data structures and the parameters aren't even followed depending on which path is being used. Drop @start/last_pfn and let it deal with @max_pfn directly. This is in preparation for further NUMA init cleanups. - v2: x86-32 initmem_init() weren't updated breaking 32bit builds. Fixed. Found by Yinghai. Signed-off-by: Tejun Heo Cc: Yinghai Lu Cc: Brian Gerst Cc: Cyrill Gorcunov Cc: Shaohui Zheng Cc: David Rientjes Cc: Ingo Molnar Cc: H. Peter Anvin --- arch/x86/include/asm/page_types.h | 3 +-- arch/x86/kernel/setup.c | 2 +- arch/x86/mm/init_32.c | 3 +-- arch/x86/mm/init_64.c | 5 ++--- arch/x86/mm/numa_32.c | 3 +-- arch/x86/mm/numa_64.c | 21 ++++++++------------- 6 files changed, 14 insertions(+), 23 deletions(-) diff --git a/arch/x86/include/asm/page_types.h b/arch/x86/include/asm/page_types.h index 731d211..eb9ed00 100644 --- a/arch/x86/include/asm/page_types.h +++ b/arch/x86/include/asm/page_types.h @@ -56,8 +56,7 @@ extern unsigned long init_memory_mapping(unsigned long start, void init_memory_mapping_high(void); -extern void initmem_init(unsigned long start_pfn, unsigned long end_pfn, - int acpi, int k8); +extern void initmem_init(int acpi, int k8); extern void free_initmem(void); #endif /* !__ASSEMBLY__ */ diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index ac909ba..756d640 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -1003,7 +1003,7 @@ void __init setup_arch(char **cmdline_p) amd = !amd_numa_init(0, max_pfn); #endif - initmem_init(0, max_pfn, acpi, amd); + initmem_init(acpi, amd); memblock_find_dma_reserve(); dma32_reserve_bootmem(); diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index c821074..16adb66 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -644,8 +644,7 @@ void __init find_low_pfn_range(void) } #ifndef CONFIG_NEED_MULTIPLE_NODES -void __init initmem_init(unsigned long start_pfn, unsigned long end_pfn, - int acpi, int k8) +void __init initmem_init(int acpi, int k8) { #ifdef CONFIG_HIGHMEM highstart_pfn = highend_pfn = max_pfn; diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index 194f273..04cc027 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -603,10 +603,9 @@ kernel_physical_mapping_init(unsigned long start, } #ifndef CONFIG_NUMA -void __init initmem_init(unsigned long start_pfn, unsigned long end_pfn, - int acpi, int k8) +void __init initmem_init(int acpi, int k8) { - memblock_x86_register_active_regions(0, start_pfn, end_pfn); + memblock_x86_register_active_regions(0, 0, max_pfn); init_memory_mapping_high(); } #endif diff --git a/arch/x86/mm/numa_32.c b/arch/x86/mm/numa_32.c index 505bb04..3249b37 100644 --- a/arch/x86/mm/numa_32.c +++ b/arch/x86/mm/numa_32.c @@ -352,8 +352,7 @@ static void init_remap_allocator(int nid) (ulong) node_remap_end_vaddr[nid]); } -void __init initmem_init(unsigned long start_pfn, unsigned long end_pfn, - int acpi, int k8) +void __init initmem_init(int acpi, int k8) { int nid; long kva_target_pfn; diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c index b7d78d7..d7e4aaf 100644 --- a/arch/x86/mm/numa_64.c +++ b/arch/x86/mm/numa_64.c @@ -579,8 +579,7 @@ static int __init numa_emulation(unsigned long start_pfn, } #endif /* CONFIG_NUMA_EMU */ -void __init initmem_init(unsigned long start_pfn, unsigned long last_pfn, - int acpi, int amd) +void __init initmem_init(int acpi, int amd) { int i; @@ -588,19 +587,16 @@ void __init initmem_init(unsigned long start_pfn, unsigned long last_pfn, nodes_clear(node_online_map); #ifdef CONFIG_NUMA_EMU - setup_physnodes(start_pfn << PAGE_SHIFT, last_pfn << PAGE_SHIFT, - acpi, amd); - if (cmdline && !numa_emulation(start_pfn, last_pfn, acpi, amd)) + setup_physnodes(0, max_pfn << PAGE_SHIFT, acpi, amd); + if (cmdline && !numa_emulation(0, max_pfn, acpi, amd)) return; - setup_physnodes(start_pfn << PAGE_SHIFT, last_pfn << PAGE_SHIFT, - acpi, amd); + setup_physnodes(0, max_pfn << PAGE_SHIFT, acpi, amd); nodes_clear(node_possible_map); nodes_clear(node_online_map); #endif #ifdef CONFIG_ACPI_NUMA - if (!numa_off && acpi && !acpi_scan_nodes(start_pfn << PAGE_SHIFT, - last_pfn << PAGE_SHIFT)) + if (!numa_off && acpi && !acpi_scan_nodes(0, max_pfn << PAGE_SHIFT)) return; nodes_clear(node_possible_map); nodes_clear(node_online_map); @@ -616,8 +612,7 @@ void __init initmem_init(unsigned long start_pfn, unsigned long last_pfn, numa_off ? "NUMA turned off" : "No NUMA configuration found"); printk(KERN_INFO "Faking a node at %016lx-%016lx\n", - start_pfn << PAGE_SHIFT, - last_pfn << PAGE_SHIFT); + 0LU, max_pfn << PAGE_SHIFT); /* setup dummy node covering all memory */ memnode_shift = 63; memnodemap = memnode.embedded_map; @@ -626,9 +621,9 @@ void __init initmem_init(unsigned long start_pfn, unsigned long last_pfn, node_set(0, node_possible_map); for (i = 0; i < MAX_LOCAL_APIC; i++) set_apicid_to_node(i, NUMA_NO_NODE); - memblock_x86_register_active_regions(0, start_pfn, last_pfn); + memblock_x86_register_active_regions(0, 0, max_pfn); init_memory_mapping_high(); - setup_node_bootmem(0, start_pfn << PAGE_SHIFT, last_pfn << PAGE_SHIFT); + setup_node_bootmem(0, 0, max_pfn << PAGE_SHIFT); numa_init_array(); } -- 1.7.1