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GET /api/patches/811829/?format=api
{ "id": 811829, "url": "http://patchwork.ozlabs.org/api/patches/811829/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/b6e0b987-8e45-77f1-c627-0df38979369a@linux.vnet.ibm.com/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/", "list_archive_url_format": "https://lore.kernel.org/linuxppc-dev/{}/", "commit_url_format": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}" }, "msgid": "<b6e0b987-8e45-77f1-c627-0df38979369a@linux.vnet.ibm.com>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/b6e0b987-8e45-77f1-c627-0df38979369a@linux.vnet.ibm.com/", "date": "2017-09-08T20:47:56", "name": "[V14,4/4] powerpc/vphn: Fix numa update end-loop bug", "commit_ref": "8bc931495d4bfcde6bb242a478ddd1186ae29301", "pull_url": null, "state": "accepted", "archived": false, "hash": "c8b26ac8e9f5bae9812950317f39679f10005a4c", "submitter": { "id": 65104, "url": "http://patchwork.ozlabs.org/api/people/65104/?format=api", "name": "Michael Bringmann", "email": "mwb@linux.vnet.ibm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/b6e0b987-8e45-77f1-c627-0df38979369a@linux.vnet.ibm.com/mbox/", "series": [ { "id": 2289, "url": "http://patchwork.ozlabs.org/api/series/2289/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=2289", "date": "2017-09-08T20:47:01", "name": "powerpc/vphn: Update CPU topology when VPHN enabled", "version": 14, "mbox": "http://patchwork.ozlabs.org/series/2289/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/811829/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/811829/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "patchwork-incoming@ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": [ "patchwork-incoming@ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Received": [ "from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3])\n\t(using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xpqPN2CYkz9s7f\n\tfor <patchwork-incoming@ozlabs.org>;\n\tSat, 9 Sep 2017 06:56:40 +1000 (AEST)", "from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 3xpqPN1NfZzDrmw\n\tfor <patchwork-incoming@ozlabs.org>;\n\tSat, 9 Sep 2017 06:56:40 +1000 (AEST)", "from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com\n\t[148.163.156.1])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby lists.ozlabs.org (Postfix) with ESMTPS id 3xpqCS1tDxzDrcT\n\tfor <linuxppc-dev@lists.ozlabs.org>;\n\tSat, 9 Sep 2017 06:48:04 +1000 (AEST)", "from pps.filterd (m0098404.ppops.net [127.0.0.1])\n\tby mx0a-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id\n\tv88KiTUu145077\n\tfor <linuxppc-dev@lists.ozlabs.org>; Fri, 8 Sep 2017 16:48:02 -0400", "from e35.co.us.ibm.com (e35.co.us.ibm.com [32.97.110.153])\n\tby mx0a-001b2d01.pphosted.com with ESMTP id 2cv0tgmaym-1\n\t(version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT)\n\tfor <linuxppc-dev@lists.ozlabs.org>; Fri, 08 Sep 2017 16:48:01 -0400", "from localhost\n\tby e35.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use\n\tOnly! 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Violators will be prosecuted; \n\tFri, 8 Sep 2017 14:47:58 -0600", "from b03ledav002.gho.boulder.ibm.com\n\t(b03ledav002.gho.boulder.ibm.com [9.17.130.233])\n\tby b03cxnp08028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with\n\tESMTP id v88Klwcn32047288; Fri, 8 Sep 2017 13:47:58 -0700", "from b03ledav002.gho.boulder.ibm.com (unknown [127.0.0.1])\n\tby IMSVA (Postfix) with ESMTP id 3CCDD136044;\n\tFri, 8 Sep 2017 14:47:58 -0600 (MDT)", "from oc1554177480.ibm.com (unknown [9.80.201.155])\n\tby b03ledav002.gho.boulder.ibm.com (Postfix) with ESMTP id\n\t0CF9C136046; Fri, 8 Sep 2017 14:47:56 -0600 (MDT)" ], "Authentication-Results": "ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=linux.vnet.ibm.com\n\t(client-ip=148.163.156.1; helo=mx0a-001b2d01.pphosted.com;\n\tenvelope-from=mwb@linux.vnet.ibm.com; receiver=<UNKNOWN>)", "To": "linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org", "In-Reply-To": "<74fb879c-19bf-3abf-4491-1f0db162e7d8@linux.vnet.ibm.com>", "From": "Michael Bringmann <mwb@linux.vnet.ibm.com>", "Subject": "[PATCH V14 4/4] powerpc/vphn: Fix numa update end-loop bug", "Organization": "IBM Linux Technology Center", "Date": "Fri, 8 Sep 2017 15:47:56 -0500", "User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101\n\tThunderbird/52.2.0", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=utf-8", "Content-Language": "en-US", "Content-Transfer-Encoding": "7bit", "X-TM-AS-GCONF": "00", "x-cbid": "17090820-0012-0000-0000-000014FAD412", "X-IBM-SpamModules-Scores": "", "X-IBM-SpamModules-Versions": "BY=3.00007691; HX=3.00000241; KW=3.00000007;\n\tPH=3.00000004; SC=3.00000227; SDB=6.00914193; UDB=6.00458905;\n\tIPR=6.00694451; \n\tBA=6.00005576; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009;\n\tZB=6.00000000; \n\tZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00017073;\n\tXFM=3.00000015; UTC=2017-09-08 20:48:00", "X-IBM-AV-DETECTION": "SAVI=unused REMOTE=unused XFE=unused", "x-cbparentid": "17090820-0013-0000-0000-00004F6952B3", "Message-Id": "<b6e0b987-8e45-77f1-c627-0df38979369a@linux.vnet.ibm.com>", "X-Proofpoint-Virus-Version": "vendor=fsecure engine=2.50.10432:, ,\n\tdefinitions=2017-09-08_13:, , signatures=0", "X-Proofpoint-Spam-Details": "rule=outbound_notspam policy=outbound score=0\n\tspamscore=0 suspectscore=0\n\tmalwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam\n\tadjust=0 reason=mlx scancount=1 engine=8.0.1-1707230000\n\tdefinitions=main-1709080310", "X-BeenThere": "linuxppc-dev@lists.ozlabs.org", "X-Mailman-Version": "2.1.23", "Precedence": "list", "List-Id": "Linux on PowerPC Developers Mail List\n\t<linuxppc-dev.lists.ozlabs.org>", "List-Unsubscribe": "<https://lists.ozlabs.org/options/linuxppc-dev>,\n\t<mailto:linuxppc-dev-request@lists.ozlabs.org?subject=unsubscribe>", "List-Archive": "<http://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev-request@lists.ozlabs.org?subject=help>", "List-Subscribe": "<https://lists.ozlabs.org/listinfo/linuxppc-dev>,\n\t<mailto:linuxppc-dev-request@lists.ozlabs.org?subject=subscribe>", "Cc": "Nathan Fontenot <nfont@linux.vnet.ibm.com>,\n\tMichael Bringmann <mwb@linux.vnet.ibm.com>,\n\tJohn Allen <jallen@linux.vnet.ibm.com>", "Errors-To": "linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org", "Sender": "\"Linuxppc-dev\"\n\t<linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org>" }, "content": "powerpc/vphn: On Power systems with shared configurations of CPUs\nand memory, there are some issues with the association of additional\nCPUs and memory to nodes when hot-adding resources. This patch\nfixes an end-of-updates processing problem observed occasionally\nin numa_update_cpu_topology().\n\nSigned-off-by: Michael Bringmann <mwb@linux.vnet.ibm.com>\n---\nChanges in V14:\n -- More code cleanup\n---\n arch/powerpc/mm/numa.c | 10 ++++++++--\n 1 file changed, 8 insertions(+), 2 deletions(-)", "diff": "diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c\nindex 32f5f8d..ec098b3 100644\n--- a/arch/powerpc/mm/numa.c\n+++ b/arch/powerpc/mm/numa.c\n@@ -1401,16 +1401,22 @@ int numa_update_cpu_topology(bool cpus_locked)\n \n \t\tfor_each_cpu(sibling, cpu_sibling_mask(cpu)) {\n \t\t\tud = &updates[i++];\n+\t\t\tud->next = &updates[i];\n \t\t\tud->cpu = sibling;\n \t\t\tud->new_nid = new_nid;\n \t\t\tud->old_nid = numa_cpu_lookup_table[sibling];\n \t\t\tcpumask_set_cpu(sibling, &updated_cpus);\n-\t\t\tif (i < weight)\n-\t\t\t\tud->next = &updates[i];\n \t\t}\n \t\tcpu = cpu_last_thread_sibling(cpu);\n \t}\n \n+\t/*\n+\t * Prevent processing of 'updates' from overflowing array\n+\t * where last entry filled in a 'next' pointer.\n+\t */\n+\tif (i)\n+\t\tupdates[i-1].next = NULL;\n+\n \tpr_debug(\"Topology update for the following CPUs:\\n\");\n \tif (cpumask_weight(&updated_cpus)) {\n \t\tfor (ud = &updates[0]; ud; ud = ud->next) {\n", "prefixes": [ "V14", "4/4" ] }