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Date: Fri, 25 Aug 2006 01:53:59 -0700 From: Paul Jackson <pj@....com> To: Dave Hansen <haveblue@...ibm.com> Cc: linux-kernel@...r.kernel.org, anton@...ba.org, simon.derr@...l.net, nathanl@...tin.ibm.com, akpm@...l.org Subject: memory hotplug - looking for good place for cpuset hook Dave, I'm looking for a good place to add yet another cpuset hook, this one to keep a nodemask in my top (root) cpuset always equal to the current value of node_online_map. The motivation for this, if you're interested, comes from the following threads, which added similar cpuset tracking of the cpu_online_map: cpusets not cpu hotplug aware http://lkml.org/lkml/2006/8/21/128 [PATCH] cpuset: top_cpuset tracks hotplug changes to cpu_online_map http://lkml.org/lkml/2006/8/24/107 (I cc'd the victims of these threads here, in case they're interested.) >From what I see so far, the right place to call my cpuset routine to update its copy of node_online_map would be right after the call: node_set_online(nid); in the routine mm/memory_hotplug.c:add_memory(). Does that seem like a plausible sounding place to you? -- I won't rest till it's the best ... Programmer, Linux Scalability Paul Jackson <pj@....com> 1.925.600.0401 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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