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

[Ming Lei]

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.

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