From patchwork Fri Jul 20 07:09:17 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Congyang X-Patchwork-Id: 1219791 Return-Path: X-Original-To: patchwork-linux-acpi@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id F2045E0038 for ; Fri, 20 Jul 2012 07:04:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751438Ab2GTHE3 (ORCPT ); Fri, 20 Jul 2012 03:04:29 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:2140 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751106Ab2GTHE2 (ORCPT ); Fri, 20 Jul 2012 03:04:28 -0400 X-IronPort-AV: E=Sophos;i="4.77,621,1336320000"; d="scan'208";a="5444846" Received: from unknown (HELO tang.cn.fujitsu.com) ([10.167.250.3]) by song.cn.fujitsu.com with ESMTP; 20 Jul 2012 15:03:32 +0800 Received: from fnstmail02.fnst.cn.fujitsu.com (tang.cn.fujitsu.com [127.0.0.1]) by tang.cn.fujitsu.com (8.14.3/8.13.1) with ESMTP id q6K74PSE030913; Fri, 20 Jul 2012 15:04:25 +0800 Received: from [10.167.225.226] ([10.167.225.226]) by fnstmail02.fnst.cn.fujitsu.com (Lotus Domino Release 8.5.3) with ESMTP id 2012072015050657-790436 ; Fri, 20 Jul 2012 15:05:06 +0800 Message-ID: <5009041D.3060909@cn.fujitsu.com> Date: Fri, 20 Jul 2012 15:09:17 +0800 From: Wen Congyang User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100413 Fedora/3.0.4-2.fc13 Thunderbird/3.0.4 MIME-Version: 1.0 To: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-acpi@vger.kernel.org CC: rientjes@google.com, liuj97@gmail.com, len.brown@intel.com, benh@kernel.crashing.org, paulus@samba.org, cl@linux.com, minchan.kim@gmail.com, akpm@linux-foundation.org, kosaki.motohiro@jp.fujitsu.com, Yasuaki ISIMATU Subject: [RFC PATCH 1/8] memory-hotplug: store the node id in acpi_memory_device References: <5009038A.4090001@cn.fujitsu.com> In-Reply-To: <5009038A.4090001@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/07/20 15:05:06, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/07/20 15:05:07, Serialize complete at 2012/07/20 15:05:07 Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org The memory device has only one node id. Store the node id when enabling the memory device, and we can reuse it when removing the memory device. CC: David Rientjes CC: Jiang Liu CC: Len Brown CC: Benjamin Herrenschmidt CC: Paul Mackerras CC: Christoph Lameter Cc: Minchan Kim CC: Andrew Morton CC: KOSAKI Motohiro CC: Yasuaki Ishimatsu Signed-off-by: Wen Congyang Reviewed-by: Yasuaki Ishimatsu --- drivers/acpi/acpi_memhotplug.c | 8 +++++--- 1 files changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c index 5cafd6b..db8de39 100644 --- a/drivers/acpi/acpi_memhotplug.c +++ b/drivers/acpi/acpi_memhotplug.c @@ -84,6 +84,7 @@ struct acpi_memory_info { struct acpi_memory_device { struct acpi_device * device; unsigned int state; /* State of the memory device */ + int nid; struct list_head res_list; }; @@ -257,6 +258,9 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device) info->enabled = 1; num_enabled++; } + + mem_device->nid = node; + if (!num_enabled) { printk(KERN_ERR PREFIX "add_memory failed\n"); mem_device->state = MEMORY_INVALID_STATE; @@ -463,7 +467,7 @@ static int acpi_memory_device_remove(struct acpi_device *device, int type) mem_device = acpi_driver_data(device); - node = acpi_get_node(mem_device->device->handle); + node = mem_device->nid; list_for_each_entry_safe(info, tmp, &mem_device->res_list, list) { if (!info->enabled) continue; @@ -473,8 +477,6 @@ static int acpi_memory_device_remove(struct acpi_device *device, int type) if (result) return result; } - if (node < 0) - node = memory_add_physaddr_to_nid(info->start_addr); result = remove_memory(node, info->start_addr, info->length); if (result)