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    SubjectRe: [PATCH RFC 0/5] powerpc:numa Add serial nid support
    On 09/28/2015 11:04 PM, Nishanth Aravamudan wrote:
    > On 27.09.2015 [23:59:08 +0530], Raghavendra K T wrote:
    [...]
    >>
    >> 2) Map the sparse chipid got from device tree to a serial nid at kernel
    >> level (The idea proposed in this series).
    >> Pro: It is more natural to handle at kernel level than at lower (OPAL) layer.
    >> con: The chipid is in device tree no longer the same as nid in kernel
    >
    > Is there any debugging/logging? Looks like not -- so how does a sysadmin
    > map from firmware-provided values to the Linux values? That's going to
    > make debugging of large systems (PowerVM or otherwise) less than
    > pleasant, it seems? Possibly you could put something in sysfs?

    I see 2 things could be done here:

    1) while doing dump_numa_cpu_topology() we can dump nid_to_chipid()
    as additional information.

    2) sysfs->
    Does /sys/devices/system/node/nodeX/*chipid* looks good. May be we
    should add only for powerpc or otherwise we need to have chipid = nid
    populated for other archs. [ I think this change may be done slowly ]







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