[PATCH v6 3/4] arm64/arm, numa, dt: adding numa dt binding implementation for arm64 platforms

[Ming Lei]

On Mon, Oct 26, 2015 at 4:24 PM, Ganapatrao Kulkarni
<gpkulkarni at gmail.com> wrote:
> On Mon, Oct 26, 2015 at 12:50 PM, Ming Lei <ming.lei at canonical.com> wrote:
>> On Mon, Oct 26, 2015 at 12:53 PM, Ming Lei <ming.lei at canonical.com> wrote:
>>> On Mon, Oct 26, 2015 at 11:50 AM, Ganapatrao Kulkarni
>>> <gpkulkarni at gmail.com> wrote:
>>>> On Mon, Oct 26, 2015 at 7:14 AM, Ming Lei <ming.lei at canonical.com> wrote:
>>>>> On Tue, Oct 20, 2015 at 6:45 PM, Ganapatrao Kulkarni
>>>>> <gkulkarni at caviumnetworks.com> wrote:
>>>>>> Adding numa dt binding support for arm64 based platforms.
>>>>>> dt node parsing for numa topology is done using device property
>>>>>> proximity and device node distance-map.
>>>>>>
>>>>>> Reviewed-by: Robert Richter <rrichter at cavium.com>
>>>>>> Signed-off-by: Ganapatrao Kulkarni <gkulkarni at caviumnetworks.com>
>>>>>> ---
>>>>>>  arch/arm64/Kconfig            |  10 ++
>>>>>>  arch/arm64/include/asm/numa.h |  10 ++
>>>>>>  arch/arm64/kernel/Makefile    |   1 +
>>>>>>  arch/arm64/kernel/of_numa.c   | 221 ++++++++++++++++++++++++++++++++++++++++++
>>>>>>  arch/arm64/kernel/smp.c       |   1 +
>>>>>>  arch/arm64/mm/numa.c          |  10 +-
>>>>>>  6 files changed, 252 insertions(+), 1 deletion(-)
>>>>>>  create mode 100644 arch/arm64/kernel/of_numa.c
>>>>>>
>>>>>> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
>>>>>> index 0f9cdc7..6cf8d20 100644
>>>>>> --- a/arch/arm64/Kconfig
>>>>>> +++ b/arch/arm64/Kconfig
>>>>>> @@ -426,6 +426,16 @@ config NUMA
>>>>>>           local memory controller of the CPU and add some more
>>>>>>           NUMA awareness to the kernel.
>>>>>>
>>>>>> +config OF_NUMA
>>>>>> +       bool "Device Tree NUMA support"
>>>>>> +       depends on NUMA
>>>>>> +       depends on OF
>>>>>> +       default y
>>>>>> +       help
>>>>>> +         Enable Device Tree NUMA support.
>>>>>> +         This enables the numa mapping of cpu, memory, io and
>>>>>> +         inter node distances using dt bindings.
>>>>>
>>>>> Enabling the above config option can cause numa_init() warning in
>>>>> numa-less arm64 system, please see the following report:
>>>> this is taken care. which version are you using?
>>>
>>> V5.
>>
>> The issue persists on V6 too, so looks V7 is needed.
> can you please share the boot log with v6.
> you can send to me only.

http://kernel.ubuntu.com/~ming/bugs/1509221/4.3-rc7-numa.dmesg

>>
>>>
>>>>
>>>>>
>>>>>           https://bugs.launchpad.net/bugs/1509221
>>>>>
>>>>> Thanks,
>>>>
>>>> Thanks
>>>> Ganapat
>>>>
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