From patchwork Tue Aug 3 13:42:35 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nathan Fontenot X-Patchwork-Id: 60751 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 6950D100E5A for ; Tue, 3 Aug 2010 23:42:48 +1000 (EST) Received: by ozlabs.org (Postfix) id B039DB70E1; Tue, 3 Aug 2010 23:42:41 +1000 (EST) Delivered-To: linuxppc-dev@ozlabs.org Received: from e5.ny.us.ibm.com (e5.ny.us.ibm.com [32.97.182.145]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e5.ny.us.ibm.com", Issuer "Equifax" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id 3B25EB70DA for ; Tue, 3 Aug 2010 23:42:41 +1000 (EST) Received: from d01relay01.pok.ibm.com (d01relay01.pok.ibm.com [9.56.227.233]) by e5.ny.us.ibm.com (8.14.4/8.13.1) with ESMTP id o73DOFi0028681 for ; Tue, 3 Aug 2010 09:24:15 -0400 Received: from d01av03.pok.ibm.com (d01av03.pok.ibm.com [9.56.224.217]) by d01relay01.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id o73Dgcs8275692 for ; Tue, 3 Aug 2010 09:42:38 -0400 Received: from d01av03.pok.ibm.com (loopback [127.0.0.1]) by d01av03.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id o73DgaQr024965 for ; Tue, 3 Aug 2010 10:42:37 -0300 Received: from [9.53.40.150] (mudbug-009053040150.austin.ibm.com [9.53.40.150]) by d01av03.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id o73DgZO7024844; Tue, 3 Aug 2010 10:42:36 -0300 Message-ID: <4C581CCB.7070806@austin.ibm.com> Date: Tue, 03 Aug 2010 08:42:35 -0500 From: Nathan Fontenot User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.11) Gecko/20100713 Thunderbird/3.0.6 MIME-Version: 1.0 To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@ozlabs.org Subject: [PATCH 7/9] v4 Update the node sysfs code References: <4C581A6D.9030908@austin.ibm.com> In-Reply-To: <4C581A6D.9030908@austin.ibm.com> Cc: Greg KH , KAMEZAWA Hiroyuki , Dave Hansen 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 Update the node sysfs code to be aware of the new capability for a memory block to contain multiple memory sections. This requires an additional parameter to unregister_mem_sect_under_nodes so that we know which memory section of the memory block to unregister. Signed-off-by: Nathan Fontenot Acked-by: KAMEZAWA Hiroyuki --- drivers/base/memory.c | 2 +- drivers/base/node.c | 12 ++++++++---- include/linux/node.h | 6 ++++-- 3 files changed, 13 insertions(+), 7 deletions(-) Index: linux-2.6/drivers/base/node.c =================================================================== --- linux-2.6.orig/drivers/base/node.c 2010-08-02 13:57:20.000000000 -0500 +++ linux-2.6/drivers/base/node.c 2010-08-02 14:01:58.000000000 -0500 @@ -346,8 +346,10 @@ int register_mem_sect_under_node(struct return -EFAULT; if (!node_online(nid)) return 0; - sect_start_pfn = section_nr_to_pfn(mem_blk->phys_index); - sect_end_pfn = sect_start_pfn + PAGES_PER_SECTION - 1; + + sect_start_pfn = section_nr_to_pfn(mem_blk->start_phys_index); + sect_end_pfn = section_nr_to_pfn(mem_blk->end_phys_index); + sect_end_pfn += PAGES_PER_SECTION - 1; for (pfn = sect_start_pfn; pfn <= sect_end_pfn; pfn++) { int page_nid; @@ -371,7 +373,8 @@ int register_mem_sect_under_node(struct } /* unregister memory section under all nodes that it spans */ -int unregister_mem_sect_under_nodes(struct memory_block *mem_blk) +int unregister_mem_sect_under_nodes(struct memory_block *mem_blk, + unsigned long phys_index) { NODEMASK_ALLOC(nodemask_t, unlinked_nodes, GFP_KERNEL); unsigned long pfn, sect_start_pfn, sect_end_pfn; @@ -383,7 +386,8 @@ int unregister_mem_sect_under_nodes(stru if (!unlinked_nodes) return -ENOMEM; nodes_clear(*unlinked_nodes); - sect_start_pfn = section_nr_to_pfn(mem_blk->phys_index); + + sect_start_pfn = section_nr_to_pfn(phys_index); sect_end_pfn = sect_start_pfn + PAGES_PER_SECTION - 1; for (pfn = sect_start_pfn; pfn <= sect_end_pfn; pfn++) { int nid; Index: linux-2.6/drivers/base/memory.c =================================================================== --- linux-2.6.orig/drivers/base/memory.c 2010-08-02 14:01:04.000000000 -0500 +++ linux-2.6/drivers/base/memory.c 2010-08-02 14:01:58.000000000 -0500 @@ -555,9 +555,9 @@ int remove_memory_block(unsigned long no mutex_lock(&mem_sysfs_mutex); mem = find_memory_block(section); + unregister_mem_sect_under_nodes(mem, __section_nr(section)); if (atomic_dec_and_test(&mem->section_count)) { - 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); Index: linux-2.6/include/linux/node.h =================================================================== --- linux-2.6.orig/include/linux/node.h 2010-08-02 13:57:20.000000000 -0500 +++ linux-2.6/include/linux/node.h 2010-08-02 14:01:58.000000000 -0500 @@ -44,7 +44,8 @@ extern int register_cpu_under_node(unsig extern int unregister_cpu_under_node(unsigned int cpu, unsigned int nid); extern int register_mem_sect_under_node(struct memory_block *mem_blk, int nid); -extern int unregister_mem_sect_under_nodes(struct memory_block *mem_blk); +extern int unregister_mem_sect_under_nodes(struct memory_block *mem_blk, + unsigned long phys_index); #ifdef CONFIG_HUGETLBFS extern void register_hugetlbfs_with_node(node_registration_func_t doregister, @@ -72,7 +73,8 @@ static inline int register_mem_sect_unde { return 0; } -static inline int unregister_mem_sect_under_nodes(struct memory_block *mem_blk) +static inline int unregister_mem_sect_under_nodes(struct memory_block *mem_blk, + unsigned long phys_index) { return 0; }