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From: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: Lai Jiangshan <laijs@cn.fujitsu.com>,
	<linux-kernel@vger.kernel.org>, Tejun Heo <tj@kernel.org>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>,
	"Gu, Zheng" <guz.fnst@cn.fujitsu.com>,
	tangchen <tangchen@cn.fujitsu.com>,
	Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: [PATCH 0/4] workqueue: fix bug when numa mapping is changed v2.
Date: Sun, 14 Dec 2014 01:27:06 +0900	[thread overview]
Message-ID: <548C68DA.20507@jp.fujitsu.com> (raw)
In-Reply-To: <1418379595-6281-1-git-send-email-laijs@cn.fujitsu.com>


Yasuaki Ishimatsu hit a allocation failure bug when the numa mapping
between CPU and node is changed. This was the last scene:
 SLUB: Unable to allocate memory on node 2 (gfp=0x80d0)
  cache: kmalloc-192, object size: 192, buffer size: 192, default order: 1, min order: 0
  node 0: slabs: 6172, objs: 259224, free: 245741
  node 1: slabs: 3261, objs: 136962, free: 127656

I and Yasuaki have a host which has a feature of node hotplug, this is a fix by me.
Tested several patterns of hotplug and I found no issue, now.
Of course I read Lai's patch and Tejun's comment. I hope I could reflect them.

1/4 ... add node-hotplug event callback.
2/4 ... add a sanity check (for debug)
3/4 ... remove per-node unbound workqueue if node goes offline.
4/4 ... update per-cpu pool's information and cpumasks, node information
        based on the latest (cpu, node) information.

Thanks,
-Kame


  parent reply	other threads:[~2014-12-13 16:34 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-12-12 10:19 [PATCH 0/5] workqueue: fix bug when numa mapping is changed Lai Jiangshan
2014-12-12 10:19 ` [PATCH 1/5] workqueue: fix memory leak in wq_numa_init() Lai Jiangshan
2014-12-12 17:12   ` Tejun Heo
2014-12-15  5:25     ` Lai Jiangshan
2014-12-12 10:19 ` [PATCH 2/5] workqueue: update wq_numa_possible_cpumask Lai Jiangshan
2014-12-12 17:18   ` Tejun Heo
2014-12-15  2:02     ` Lai Jiangshan
2014-12-25 20:16       ` Tejun Heo
2014-12-18  2:22   ` Lai Jiangshan
2014-12-12 10:19 ` [PATCH 3/5] workqueue: fixup existing pool->node Lai Jiangshan
2014-12-12 17:25   ` Tejun Heo
2014-12-15  1:23     ` Lai Jiangshan
2014-12-25 20:14       ` Tejun Heo
2015-01-13  7:08         ` Lai Jiangshan
2015-01-13 15:24           ` Tejun Heo
2014-12-12 10:19 ` [PATCH 4/5] workqueue: update NUMA affinity for the node lost CPU Lai Jiangshan
2014-12-12 17:27   ` Tejun Heo
2014-12-15  1:28     ` Lai Jiangshan
2014-12-25 20:17       ` Tejun Heo
2014-12-12 10:19 ` [PATCH 5/5] workqueue: retry on NUMA_NO_NODE when create_worker() fails Lai Jiangshan
2014-12-12 16:05   ` KOSAKI Motohiro
2014-12-12 17:29     ` KOSAKI Motohiro
2014-12-12 17:29   ` Tejun Heo
2014-12-12 17:13 ` [PATCH 0/5] workqueue: fix bug when numa mapping is changed Yasuaki Ishimatsu
2014-12-15  1:34   ` Lai Jiangshan
2014-12-18  1:50     ` Yasuaki Ishimatsu
2014-12-13 16:27 ` Kamezawa Hiroyuki [this message]
2014-12-13 16:30   ` [PATCH 1/4] workqueue: add a hook for node hotplug Kamezawa Hiroyuki
2014-12-13 16:33   ` [PATCH 2/4] workqueue: add warning if pool->node is offline Kamezawa Hiroyuki
2014-12-13 16:35   ` [PATCH 3/4] workqueue: remove per-node unbound pool when node goes offline Kamezawa Hiroyuki
2014-12-15  2:06     ` Lai Jiangshan
2014-12-15  2:06       ` Kamezawa Hiroyuki
2014-12-13 16:38   ` [PATCH 4/4] workqueue: handle change in cpu-node relationship Kamezawa Hiroyuki
2014-12-15  2:12     ` Lai Jiangshan
2014-12-15  2:20       ` Kamezawa Hiroyuki
2014-12-15  2:48         ` Lai Jiangshan
2014-12-15  2:55           ` Kamezawa Hiroyuki
2014-12-15  3:30             ` Lai Jiangshan
2014-12-15  3:34             ` Lai Jiangshan
2014-12-15  4:04               ` Kamezawa Hiroyuki
2014-12-15  5:19                 ` Lai Jiangshan
2014-12-15  5:33                   ` Kamezawa Hiroyuki
2014-12-15 11:11   ` [PATCH 0/4] workqueue: fix memory allocation after numa mapping is changed v3 Kamezawa Hiroyuki
2014-12-15 11:14     ` [PATCH 1/4] workqueue:Fix unbound workqueue's node affinity detection Kamezawa Hiroyuki
2014-12-16  5:30       ` Lai Jiangshan
2014-12-16  7:32         ` Kamezawa Hiroyuki
2014-12-16  7:54           ` Lai Jiangshan
2014-12-15 11:16     ` [PATCH 2/4] workqueue: update per-cpu workqueue's node affinity at,online-offline Kamezawa Hiroyuki
2014-12-16  5:32       ` Lai Jiangshan
2014-12-16  7:25         ` Kamezawa Hiroyuki
2014-12-15 11:18     ` [PATCH 3/4] workqueue: Update workqueue's possible cpumask when a new node, coming up Kamezawa Hiroyuki
2014-12-16  7:49       ` Lai Jiangshan
2014-12-16  8:10         ` Kamezawa Hiroyuki
2014-12-16  8:18           ` Kamezawa Hiroyuki
2014-12-15 11:22     ` [PATCH 4/4] workqueue: Handle cpu-node affinity change at CPU_ONLINE Kamezawa Hiroyuki

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