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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 17 Mar 2020 13:20:35 -0000 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06avi18626390.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 02HDJX1D43516166 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 17 Mar 2020 13:19:33 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8E92AA4060; Tue, 17 Mar 2020 13:20:34 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2F8AEA405B; Tue, 17 Mar 2020 13:20:30 +0000 (GMT) Received: from srikart450.in.ibm.com (unknown [9.85.71.34]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 17 Mar 2020 13:20:29 +0000 (GMT) From: Srikar Dronamraju To: Andrew Morton Cc: Srikar Dronamraju , linux-mm@kvack.org, Mel Gorman , Michael Ellerman , Sachin Sant , Michal Hocko , Christopher Lameter , linuxppc-dev@lists.ozlabs.org, Joonsoo Kim , Kirill Tkhai , Vlastimil Babka , Bharata B Rao Subject: [PATCH 0/4] Fix kmalloc_node on offline nodes Date: Tue, 17 Mar 2020 18:47:49 +0530 X-Mailer: git-send-email 2.17.1 In-Reply-To: <3381CD91-AB3D-4773-BA04-E7A072A63968@linux.vnet.ibm.com> References: <3381CD91-AB3D-4773-BA04-E7A072A63968@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 20031713-0028-0000-0000-000003E645EE X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20031713-0029-0000-0000-000024AB9A95 Message-Id: <20200317131753.4074-1-srikar@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.645 definitions=2020-03-17_04:2020-03-17,2020-03-17 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 suspectscore=0 adultscore=0 spamscore=0 lowpriorityscore=0 priorityscore=1501 malwarescore=0 clxscore=1015 impostorscore=0 phishscore=0 mlxscore=0 mlxlogscore=768 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2003170056 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Sachin recently reported that linux-next was no more bootable on few systems. https://lore.kernel.org/linux-next/3381CD91-AB3D-4773-BA04-E7A072A63968@linux.vnet.ibm.com/ # numactl -H available: 2 nodes (0-1) node 0 cpus: node 0 size: 0 MB node 0 free: 0 MB node 1 cpus: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 node 1 size: 35247 MB node 1 free: 30907 MB node distances: node 0 1 0: 10 40 1: 40 10 # Sachin bisected the problem to Commit a75056fc1e7c ("mm/memcontrol.c: allocate shrinker_map on appropriate NUMA node") The root cause analysis showed that mm/slub and powerpc/numa had some shortcomings with respect to offline nodes. This patch series is on top of patches posted at https://lore.kernel.org/linuxppc-dev/20200311110237.5731-1-srikar@linux.vnet.ibm.com/t/#u Cc: Andrew Morton Cc: linux-mm@kvack.org Cc: Mel Gorman Cc: Michael Ellerman Cc: Sachin Sant Cc: Michal Hocko Cc: Christopher Lameter Cc: linuxppc-dev@lists.ozlabs.org Cc: Joonsoo Kim Cc: Kirill Tkhai Cc: Vlastimil Babka Cc: Srikar Dronamraju Cc: Bharata B Rao Srikar Dronamraju (4): mm: Check for node_online in node_present_pages mm/slub: Use mem_node to allocate a new slab mm: Implement reset_numa_mem powerpc/numa: Set fallback nodes for offline nodes arch/powerpc/mm/numa.c | 11 ++++++++++- include/asm-generic/topology.h | 3 +++ include/linux/mmzone.h | 6 ++++-- include/linux/topology.h | 7 +++++++ mm/slub.c | 19 ++++++++----------- 5 files changed, 32 insertions(+), 14 deletions(-) -- 2.18.1