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Re: [Patch V3 9/9] mm, x86: Enable memoryless node support to better support CPU/memory hotplug

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On 08/18/2015 02:59 PM, Jiang Liu wrote:
>
> ...
>>>        }
>>> @@ -739,6 +746,22 @@ void __init init_cpu_to_node(void)
>>>            if (!node_online(node))
>>>                node = find_near_online_node(node);

Hi Liu,

If cpu-less, memory-less and normal node will all be online anyway,
I think we don't need to find_near_online_node() any more for
CPUs on offline nodes.

Or is there any other case ?

Thanks.


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[Patch V3 0/9] Enable memoryless node support for x86 Jiang Liu <jiang.liu@linux.intel.com> - 2015-08-17 05:20 +0200
  [Patch V3 6/9] i40evf: Use numa_mem_id() to better support memoryless node Jiang Liu <jiang.liu@linux.intel.com> - 2015-08-17 05:20 +0200
    RE: [Intel-wired-lan] [Patch V3 6/9] i40evf: Use numa_mem_id() to  better support memoryless node "Patil, Kiran" <kiran.patil@intel.com> - 2015-08-17 21:10 +0200
      Re: [Intel-wired-lan] [Patch V3 6/9] i40evf: Use numa_mem_id() to  better support memoryless node Jeff Kirsher <jeffrey.t.kirsher@intel.com> - 2015-08-18 23:40 +0200
  [Patch V3 9/9] mm, x86: Enable memoryless node support to better support CPU/memory hotplug Jiang Liu <jiang.liu@linux.intel.com> - 2015-08-17 05:20 +0200
    Re: [Patch V3 9/9] mm, x86: Enable memoryless node support to better  support CPU/memory hotplug Tang Chen <tangchen@cn.fujitsu.com> - 2015-08-18 08:20 +0200
      Re: [Patch V3 9/9] mm, x86: Enable memoryless node support to better  support CPU/memory hotplug Tang Chen <tangchen@cn.fujitsu.com> - 2015-08-18 13:40 +0200
    Re: [Patch V3 9/9] mm, x86: Enable memoryless node support to better  support CPU/memory hotplug Ingo Molnar <mingo@kernel.org> - 2015-08-18 09:40 +0200
  [Patch V3 1/9] x86, NUMA, ACPI: Online node earlier when doing CPU hot-addition Jiang Liu <jiang.liu@linux.intel.com> - 2015-08-17 05:20 +0200
  [Patch V3 2/9] kernel/profile.c: Replace cpu_to_mem() with cpu_to_node() Jiang Liu <jiang.liu@linux.intel.com> - 2015-08-17 05:20 +0200
    Re: [Patch V3 2/9] kernel/profile.c: Replace cpu_to_mem() with  cpu_to_node() David Rientjes <rientjes@google.com> - 2015-08-18 02:40 +0200
      Re: [Patch V3 2/9] kernel/profile.c: Replace cpu_to_mem() with  cpu_to_node() Jiang Liu <jiang.liu@linux.intel.com> - 2015-08-19 09:20 +0200
  [Patch V3 4/9] openvswitch: Replace cpu_to_node() with cpu_to_mem() to support memoryless node Jiang Liu <jiang.liu@linux.intel.com> - 2015-08-17 05:20 +0200
    Re: [Patch V3 4/9] openvswitch: Replace cpu_to_node() with  cpu_to_mem() to support memoryless node Pravin Shelar <pshelar@nicira.com> - 2015-08-18 02:20 +0200
  [Patch V3 7/9] x86, numa: Kill useless code to improve code readability Jiang Liu <jiang.liu@linux.intel.com> - 2015-08-17 05:20 +0200
  [Patch V3 3/9] sgi-xp: Replace cpu_to_node() with cpu_to_mem() to support memoryless node Jiang Liu <jiang.liu@linux.intel.com> - 2015-08-17 05:20 +0200
    Re: [Patch V3 3/9] sgi-xp: Replace cpu_to_node() with cpu_to_mem()  to support memoryless node David Rientjes <rientjes@google.com> - 2015-08-18 02:30 +0200
      Re: [Patch V3 3/9] sgi-xp: Replace cpu_to_node() with cpu_to_mem() to  support memoryless node Jiang Liu <jiang.liu@linux.intel.com> - 2015-08-19 10:30 +0200
    Re: [Patch V3 3/9] sgi-xp: Replace cpu_to_node() with cpu_to_mem() to  support memoryless node Robin Holt <robinmholt@gmail.com> - 2015-08-19 14:00 +0200
      Re: [Patch V3 3/9] sgi-xp: Replace cpu_to_node() with cpu_to_mem() to  support memoryless node Jiang Liu <jiang.liu@linux.intel.com> - 2015-08-19 14:50 +0200
  [Patch V3 5/9] i40e: Use numa_mem_id() to better support memoryless node Jiang Liu <jiang.liu@linux.intel.com> - 2015-08-17 05:20 +0200
    Re: [Patch V3 5/9] i40e: Use numa_mem_id() to better support memoryless  node David Rientjes <rientjes@google.com> - 2015-08-18 02:40 +0200
  [Patch V3 8/9] mm: Update _mem_id_[] for every possible CPU when memory configuration changes Jiang Liu <jiang.liu@linux.intel.com> - 2015-08-17 05:20 +0200
  Re: [Patch V3 0/9] Enable memoryless node support for x86 Andrew Morton <akpm@linux-foundation.org> - 2015-08-17 23:40 +0200
  Re: [Patch V3 0/9] Enable memoryless node support for x86 Tang Chen <tangchen@cn.fujitsu.com> - 2015-08-18 12:10 +0200
    Re: [Patch V3 0/9] Enable memoryless node support for x86 Jiang Liu <jiang.liu@linux.intel.com> - 2015-08-19 10:10 +0200

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