Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758296Ab2JZKsK (ORCPT ); Fri, 26 Oct 2012 06:48:10 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:21852 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1758250Ab2JZKsI (ORCPT ); Fri, 26 Oct 2012 06:48:08 -0400 X-IronPort-AV: E=Sophos;i="4.80,654,1344182400"; d="scan'208";a="6078653" From: wency@cn.fujitsu.com To: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org Cc: liuj97@gmail.com, len.brown@intel.com, akpm@linux-foundation.org, kosaki.motohiro@jp.fujitsu.com, isimatu.yasuaki@jp.fujitsu.com, rjw@sisk.pl, laijs@cn.fujitsu.com, Wen Congyang Subject: [PATCH v3 0/3] acpi,memory-hotplug : implement framework for hot removing memory Date: Fri, 26 Oct 2012 18:31:00 +0800 Message-Id: <1351247463-5653-1-git-send-email-wency@cn.fujitsu.com> X-Mailer: git-send-email 1.8.0 X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/10/26 18:24:49, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/10/26 18:24:52, Serialize complete at 2012/10/26 18:24:52 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1934 Lines: 54 From: Wen Congyang The patch-set implements a framework for hot removing memory. The memory device can be removed by 2 ways: 1. send eject request by SCI 2. echo 1 >/sys/bus/pci/devices/PNP0C80:XX/eject In the 1st case, acpi_memory_disable_device() will be called. In the 2nd case, acpi_memory_device_remove() will be called. acpi_memory_device_remove() will also be called when we unbind the memory device from the driver acpi_memhotplug or a driver initialization fails. acpi_memory_disable_device() has already implemented a code which offlines memory and releases acpi_memory_info struct . But acpi_memory_device_remove() has not implemented it yet. So the patch prepares the framework for hot removing memory and adds the framework into acpi_memory_device_remove(). The last version of this patchset is here: https://lkml.org/lkml/2012/10/19/156 Changelogs from v2 to v3: Patch2: rename lock to list_lock Changelogs from v1 to v2: Patch1: use acpi_bus_trim() instead of acpi_bus_remove() Patch2: new patch, introduce a lock to protect the list Patch3: remove memory too when type is ACPI_BUS_REMOVAL_NORMAL Note: I don't send [Patch2-4 v1] in this series because they are no logical changes in these 3 patches. Wen Congyang (2): acpi,memory-hotplug: call acpi_bus_trim() to remove memory device acpi,memory-hotplug: introduce a mutex lock to protect the list in acpi_memory_device Yasuaki Ishimatsu (1): acpi,memory-hotplug : add memory offline code to acpi_memory_device_remove() drivers/acpi/acpi_memhotplug.c | 51 +++++++++++++++++++++++++++++++++--------- 1 file changed, 41 insertions(+), 10 deletions(-) -- 1.8.0 -- 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/