From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx133.postini.com [74.125.245.133]) by kanga.kvack.org (Postfix) with SMTP id 111B06B004D for ; Fri, 20 Jul 2012 03:04:28 -0400 (EDT) Message-ID: <5009041D.3060909@cn.fujitsu.com> Date: Fri, 20 Jul 2012 15:09:17 +0800 From: Wen Congyang MIME-Version: 1.0 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> Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=UTF-8 Sender: owner-linux-mm@kvack.org List-ID: 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 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 --- 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) -- 1.7.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org