Re: [PATCH v3 2/3] powerpc/numa: Allow cpu_to_coregroup_id without PPC_SPLPAR

* Shrikanth Hegde [off-list ref] [2026-09-04 15:29:03]:

On 9/2/26 6:05 PM, Srikar Dronamraju wrote:

quoted

Make cpu_to_coregroup_id() available outside PPC_SPLPAR so it can be
used by platforms that do not rely on the SPLPAR-specific VPHN path.

diff --git a/arch/powerpc/include/asm/topology.h b/arch/powerpc/include/asm/topology.h
index 44ec416fa489..02c3c9ab3ea9 100644
--- a/arch/powerpc/include/asm/topology.h
+++ b/arch/powerpc/include/asm/topology.h

@@ -71,6 +71,7 @@ extern void map_cpu_to_node(int cpu, int node);
  extern void unmap_cpu_from_node(unsigned long cpu);
  #endif /* CONFIG_HOTPLUG_CPU */
+int cpu_to_coregroup_id(int cpu);

nit:

I prefer extern before declaration so that i can see it is defined
elsewhere.

Hey Shrikanth,

Thanks for taking a look.

It was done on intention based on comment from Christophe Leroy here
https://lkml.kernel.org/r/6387fb12-76f1-4503-8ac2-3ca777c0186e@kernel.org

Other than that, rest looks good to me.

Reviewed-by: Shrikanth Hegde <redacted>

-- 
Thanks and Regards
Srikar Dronamraju