powerpc/smp: Use cpu_to_chip_id() to find core siblings

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When building the CPU scheduler topology the kernel uses the ibm,chipid
property from the devicetree to group logical CPUs. Currently the DT
search for this property is open-coded in smp.c and this functionality
is a duplication of what's in cpu_to_chip_id() already. This patch
removes the existing search in favor of that.

It's worth mentioning that the semantics of the search are different
in cpu_to_chip_id(). When there is no ibm,chipid in the CPUs node it
will also search /cpus and / for the property, but this should not
effect the output topology.

Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Oliver O'Halloran 2017-06-29 17:12:53 +10:00 • committed by Michael Ellerman

parent 197267d035

commit e3d8b67e2c

1 changed files with 11 additions and 26 deletions

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arch/powerpc/kernel/smp.c

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