Hello, On Tue, Jul 19, 2016 at 03:28:02PM +0800, Dou Liyang wrote: > In this series of patches, we are going to construct cpu <-> node mapping > for all possible cpus at boot time, which is a 1-1 mapping. It means the
1-1 mapping means that each cpu is mapped to its own private node which isn't the case. Just call it a persistent mapping? > cpu will be mapped to the node it belongs to, and will never be changed. > If a node has only cpus but no memory, the cpus on it will be mapped to > a memory-less node. And the memory-less node should be onlined. > > This patch allocate pgdats for all memory-less nodes and online them at > boot time. Then build zonelists for these nodes. As a result, when cpus > on these memory-less nodes try to allocate memory from local node, it > will automatically fall back to the proper zones in the zonelists. Yeah, I think this is an a lot better approach for memory-less nodes. > Signed-off-by: Zhu Guihua <zhugh.f...@cn.fujitsu.com> > Signed-off-by: Dou Liyang <douly.f...@cn.fujitsu.com> Acked-by: Tejun Heo <t...@kernel.org> Thanks. -- tejun
