Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755958Ab2F0FkB (ORCPT ); Wed, 27 Jun 2012 01:40:01 -0400 Received: from fgwmail6.fujitsu.co.jp ([192.51.44.36]:40162 "EHLO fgwmail6.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750929Ab2F0Fj6 (ORCPT ); Wed, 27 Jun 2012 01:39:58 -0400 X-SecurityPolicyCheck: OK by SHieldMailChecker v1.7.4 Message-ID: <4FEA9C88.1070800@jp.fujitsu.com> Date: Wed, 27 Jun 2012 14:39:20 +0900 From: Yasuaki Ishimatsu User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:13.0) Gecko/20120614 Thunderbird/13.0.1 MIME-Version: 1.0 To: , , , CC: , , , , , , , Subject: [RFC PATCH 0/12] memory-hotplug : hot-remove physical memory Content-Type: text/plain; charset="ISO-2022-JP" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2877 Lines: 58 This patch series aims to support physical memory hot-remove. [RFC PATCH 1/12] memory-hotplug : rename remove_memory to offline_memory [RFC PATCH 2/12] memory-hogplug : check memory offline in offline_pages [RFC PATCH 3/12] memory-hotplug : add physical memory hotplug code to acpi_memory_device_remove [RFC PATCH 4/12] memory-hotplug : remove /sys/firmware/memmap/X sysfs [RFC PATCH 5/12] memory hotplug : does not release memory region in PAGES_PER_SECTION chunks [RFC PATCH 6/12] memory-hotplug : remove_memory calls __remove_pages [RFC PATCH 7/12] memory-hotplug : check page type in get_page_bootmem [RFC PATCH 8/12] memory-hotplug : move register_page_bootmem_info_node and put_page_bootmem for sparse-vmemmap [RFC PATCH 9/12] memory-hotplug : implement register_page_bootmem_info_section of sparse-vmemmap [RFC PATCH 10/12] memory-hotplug : free memmap of sparse-vmemmap [RFC PATCH 11/12] memory-hotplug : add node_device_release [RFC PATCH 12/12] memory-hotplug : remove sysfs file of node Even if you apply these patches, you cannot remove the physical memory completely since these patches are still under development. I want you to cooperate to improve the physical memory hot-remove. So please review these patches and give your comment/idea. The patches can free/remove following things: - acpi_memory_info : [RFC PATCH 3/12] - /sys/firmware/memmap/X/{end, start, type} : [RFC PATCH 4/12] - iomem_resource : [RFC PATCH 5/12] - mem_section and related sysfs files : [RFC PATCH 6-10/12] - node and related sysfs files : [RFC PATCH 11-12/12] The patches cannot do following things yet: - page table of removed memory If you find lack of function for physical memory hot-remove, please let me know. --- arch/powerpc/platforms/pseries/hotplug-memory.c | 16 +- arch/x86/mm/init_64.c | 142 ++++++++++++++++++++++++ drivers/acpi/acpi_memhotplug.c | 25 +++- drivers/base/memory.c | 24 +++- drivers/base/node.c | 7 + drivers/firmware/memmap.c | 71 ++++++++++++ include/linux/firmware-map.h | 6 + include/linux/memory.h | 1 include/linux/memory_hotplug.h | 17 -- include/linux/mm.h | 5 mm/memory_hotplug.c | 101 +++++++++++++---- mm/sparse.c | 5 12 files changed, 374 insertions(+), 46 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/