powerpc/numa: Use cpu node map of first sibling thread

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All the sibling threads of a core have to be part of the same node.
To ensure that all the sibling threads map to the same node, always
lookup/update the cpu-to-node map of the first thread in the core.

Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Reported-by: Abdul Haleem <abdhalee@linux.vnet.ibm.com>
Reviewed-by: Nathan Lynch <nathanl@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200129135301.24739-4-srikar@linux.vnet.ibm.com

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Srikar Dronamraju 2020-01-29 19:22:59 +05:30 • committed by Michael Ellerman

parent 76b7bfb173

commit 413e40550c

1 changed files with 20 additions and 2 deletions

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arch/powerpc/mm/numa.c

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