Re: [PATCH] powerpc: export cpu_smallcore_map for modules

[Randy Dunlap]

On 8/21/22 20:40, Michael Ellerman wrote:
> Randy Dunlap <rdunlap@xxxxxxxxxxxxx> writes:
>> Fix build error when CONFIG_DRM_AMDGPU=m:
>>
>> ERROR: modpost: "cpu_smallcore_map" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
>>
>> by exporting 'cpu_smallcore_map' just as other per_cpu
>> symbols are exported.
>>
>> drivers/gpu/drm/amd/amdkfd/kfd_device.c calls cpu_smt_mask().
>> This is an inline function on powerpc which references
>> cpu_smallcore_map.
>>
>> Fixes: 425752c63b6f ("powerpc: Detect the presence of big-cores via "ibm, thread-groups"")
>> Fixes: 7bc913085765 ("drm/amdkfd: Try to schedule bottom half on same core")
> 
> That 2nd commit is not in mainline, only linux-next.
> 
> I don't mind merging this fix preemptively, but is that SHA stable?

Felix, Alex, can you answer that, please?

-- 
~Randy