From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752592AbcHHS2S (ORCPT ); Mon, 8 Aug 2016 14:28:18 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:60698 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752425AbcHHS1d (ORCPT ); Mon, 8 Aug 2016 14:27:33 -0400 X-IBM-Helo: d03dlp03.boulder.ibm.com X-IBM-MailFrom: arbab@linux.vnet.ibm.com From: Reza Arbab To: Rob Herring , Mark Rutland , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Jonathan Corbet , Bharata B Rao , Nathan Fontenot , devicetree@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/4] powerpc/mm: create numa nodes for hotplug memory Date: Mon, 8 Aug 2016 13:27:21 -0500 X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1470680843-28702-1-git-send-email-arbab@linux.vnet.ibm.com> References: <1470680843-28702-1-git-send-email-arbab@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16080818-0020-0000-0000-00000982021D X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00005567; HX=3.00000240; KW=3.00000007; PH=3.00000004; SC=3.00000178; SDB=6.00741845; UDB=6.00349120; IPR=6.00514403; BA=6.00004651; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00012249; XFM=3.00000011; UTC=2016-08-08 18:27:30 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16080818-0021-0000-0000-00005463502D Message-Id: <1470680843-28702-3-git-send-email-arbab@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-08-08_13:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1604210000 definitions=main-1608080184 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When scanning the device tree to initialize the system NUMA topology, process dt elements with compatible id "ibm,hotplug-aperture" to create memoryless numa nodes. These nodes will be filled when hotplug occurs within the associated address range. Signed-off-by: Reza Arbab --- arch/powerpc/mm/numa.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index 75b9cd6..80d067d 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -708,6 +708,12 @@ static void __init parse_drconf_memory(struct device_node *memory) } } +static const struct of_device_id memory_match[] = { + { .type = "memory" }, + { .compatible = "ibm,hotplug-aperture" }, + { /* sentinel */ } +}; + static int __init parse_numa_properties(void) { struct device_node *memory; @@ -752,7 +758,7 @@ static int __init parse_numa_properties(void) get_n_mem_cells(&n_mem_addr_cells, &n_mem_size_cells); - for_each_node_by_type(memory, "memory") { + for_each_matching_node(memory, memory_match) { unsigned long start; unsigned long size; int nid; @@ -1080,7 +1086,7 @@ static int hot_add_node_scn_to_nid(unsigned long scn_addr) struct device_node *memory; int nid = -1; - for_each_node_by_type(memory, "memory") { + for_each_matching_node(memory, memory_match) { unsigned long start, size; int ranges; const __be32 *memcell_buf; -- 1.8.3.1