From patchwork Mon Jul 12 15:43:04 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nathan Fontenot X-Patchwork-Id: 58626 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 1B21E100B65 for ; Tue, 13 Jul 2010 01:43:25 +1000 (EST) Received: by ozlabs.org (Postfix) id 3EDFA1007D2; Tue, 13 Jul 2010 01:43:19 +1000 (EST) Delivered-To: linuxppc-dev@ozlabs.org Received: from e37.co.us.ibm.com (e37.co.us.ibm.com [32.97.110.158]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e37.co.us.ibm.com", Issuer "Equifax" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id B3777B6F0C for ; Tue, 13 Jul 2010 01:43:18 +1000 (EST) Received: from d03relay01.boulder.ibm.com (d03relay01.boulder.ibm.com [9.17.195.226]) by e37.co.us.ibm.com (8.14.4/8.13.1) with ESMTP id o6CFfNwx005614 for ; Mon, 12 Jul 2010 09:41:23 -0600 Received: from d03av05.boulder.ibm.com (d03av05.boulder.ibm.com [9.17.195.85]) by d03relay01.boulder.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id o6CFh4FB067312 for ; Mon, 12 Jul 2010 09:43:06 -0600 Received: from d03av05.boulder.ibm.com (loopback [127.0.0.1]) by d03av05.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id o6CFh4JA004440 for ; Mon, 12 Jul 2010 09:43:04 -0600 Received: from [9.53.40.150] (mudbug-009053040150.austin.ibm.com [9.53.40.150]) by d03av05.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id o6CFh420004433; Mon, 12 Jul 2010 09:43:04 -0600 Message-ID: <4C3B3808.3000803@austin.ibm.com> Date: Mon, 12 Jul 2010 10:43:04 -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 Subject: [PATCH 2/7] Create the new 'end_phys_index' file References: <4C3B3446.5090302@austin.ibm.com> In-Reply-To: <4C3B3446.5090302@austin.ibm.com> Cc: linuxppc-dev@ozlabs.org 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 This patch adds a new 'end_phys_index' file to each memory sysfs directory to report the physical index of the last memory section coverd 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 2010-07-09 14:23:09.000000000 -0500 +++ linux-2.6/drivers/base/memory.c 2010-07-09 14:23:17.000000000 -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); } /* @@ -327,6 +335,7 @@ } 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); @@ -536,6 +545,8 @@ 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); @@ -581,6 +592,7 @@ 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 2010-07-09 14:22:44.000000000 -0500 +++ linux-2.6/include/linux/memory.h 2010-07-09 14:23:17.000000000 -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