Messages in this thread | | | Date | Wed, 25 May 2016 16:37:31 -0400 | From | Tejun Heo <> | Subject | Re: [PATCH v7 0/5] Make cpuid <-> nodeid mapping persistent |
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On Mon, May 23, 2016 at 03:02:14PM +0800, Zhu Guihua wrote: > We tried to do that. You can see our patch at > http://www.gossamer-threads.com/lists/linux/kernel/2116748 > > But maintainer thought, we should establish persistent cpuid<->nodeid > relationship, > there is no need to change the map. > > Cc TJ, > Could we return to workqueue to fix this?
Workqueue is just one of symptoms. We have the same problem for memory allocation paths. It's either keeping cpu <-> node mapping persistent or hunting down every case which may be affected and build likely costly synchronization construct around it. It's not like we have a lot of archs which support CPU hotplug and NUMA.
Thanks.
-- tejun
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