From patchwork Thu Jul 15 18:38:52 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nathan Fontenot X-Patchwork-Id: 59006 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from bilbo.ozlabs.org (localhost [127.0.0.1]) by ozlabs.org (Postfix) with ESMTP id DB5E4100E28 for ; Fri, 16 Jul 2010 04:39:04 +1000 (EST) Received: by ozlabs.org (Postfix) id 6EB601007E2; Fri, 16 Jul 2010 04:38:57 +1000 (EST) Delivered-To: linuxppc-dev@ozlabs.org Received: from e4.ny.us.ibm.com (e4.ny.us.ibm.com [32.97.182.144]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e4.ny.us.ibm.com", Issuer "Equifax" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id E2DFB1007D8 for ; Fri, 16 Jul 2010 04:38:56 +1000 (EST) Received: from d01relay05.pok.ibm.com (d01relay05.pok.ibm.com [9.56.227.237]) by e4.ny.us.ibm.com (8.14.4/8.13.1) with ESMTP id o6FIOvL4023468 for ; Thu, 15 Jul 2010 14:24:57 -0400 Received: from d01av04.pok.ibm.com (d01av04.pok.ibm.com [9.56.224.64]) by d01relay05.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id o6FIcsVk068376 for ; Thu, 15 Jul 2010 14:38:54 -0400 Received: from d01av04.pok.ibm.com (loopback [127.0.0.1]) by d01av04.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id o6FIcqcH010719 for ; Thu, 15 Jul 2010 14:38:53 -0400 Received: from [9.53.40.150] (mudbug-009053040150.austin.ibm.com [9.53.40.150]) by d01av04.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id o6FIcqu0010685; Thu, 15 Jul 2010 14:38:52 -0400 Message-ID: <4C3F55BC.4020600@austin.ibm.com> Date: Thu, 15 Jul 2010 13:38:52 -0500 From: Nathan Fontenot User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.10) Gecko/20100527 Thunderbird/3.0.5 MIME-Version: 1.0 To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@ozlabs.org Subject: [PATCH 2/5] v2 Create new 'end_phys_index' file References: <4C3F53D1.3090001@austin.ibm.com> In-Reply-To: <4C3F53D1.3090001@austin.ibm.com> Cc: KAMEZAWA Hiroyuki X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Add a new 'end_phys_index' file to each memory sysfs directory to report the physical index of the last memory section covered by the sysfs directory. Signed-off-by: Nathan Fontenot --- drivers/base/memory.c | 14 +++++++++++++- include/linux/memory.h | 3 +++ 2 files changed, 16 insertions(+), 1 deletion(-) Index: linux-2.6/drivers/base/memory.c =================================================================== --- linux-2.6.orig/drivers/base/memory.c 2010-07-15 09:55:54.000000000 -0500 +++ linux-2.6/drivers/base/memory.c 2010-07-15 09:56:05.000000000 -0500 @@ -121,7 +121,15 @@ { struct memory_block *mem = container_of(dev, struct memory_block, sysdev); - return sprintf(buf, "%08lx\n", mem->phys_index); + return sprintf(buf, "%08lx\n", mem->start_phys_index); +} + +static ssize_t show_mem_end_phys_index(struct sys_device *dev, + struct sysdev_attribute *attr, char *buf) +{ + struct memory_block *mem = + container_of(dev, struct memory_block, sysdev); + return sprintf(buf, "%08lx\n", mem->end_phys_index); } /* @@ -321,6 +329,7 @@ } static SYSDEV_ATTR(phys_index, 0444, show_mem_phys_index, NULL); +static SYSDEV_ATTR(end_phys_index, 0444, show_mem_end_phys_index, NULL); static SYSDEV_ATTR(state, 0644, show_mem_state, store_mem_state); static SYSDEV_ATTR(phys_device, 0444, show_phys_device, NULL); static SYSDEV_ATTR(removable, 0444, show_mem_removable, NULL); @@ -533,6 +542,8 @@ if (!ret) ret = mem_create_simple_file(mem, phys_index); if (!ret) + ret = mem_create_simple_file(mem, end_phys_index); + if (!ret) ret = mem_create_simple_file(mem, state); if (!ret) ret = mem_create_simple_file(mem, phys_device); @@ -577,6 +588,7 @@ if (list_empty(&mem->sections)) { unregister_mem_sect_under_nodes(mem); mem_remove_simple_file(mem, phys_index); + mem_remove_simple_file(mem, end_phys_index); mem_remove_simple_file(mem, state); mem_remove_simple_file(mem, phys_device); mem_remove_simple_file(mem, removable); Index: linux-2.6/include/linux/memory.h =================================================================== --- linux-2.6.orig/include/linux/memory.h 2010-07-15 09:54:06.000000000 -0500 +++ linux-2.6/include/linux/memory.h 2010-07-15 09:56:05.000000000 -0500 @@ -29,6 +29,9 @@ struct memory_block { unsigned long state; + unsigned long start_phys_index; + unsigned long end_phys_index; + /* * This serializes all state change requests. It isn't * held during creation because the control files are