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

[Ming Lei]

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.

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