[PATCH v2 1/2] arm64: topology: move store_cpu_topology() to shared code

[Conor.Dooley at microchip.com]

On 11/07/2022 11:02, Sudeep Holla wrote:
> On Sat, Jul 09, 2022 at 12:58:57PM +0000, Conor.Dooley at microchip.com wrote:
>> Looking at the arm32 implementation - it appears to be mostly the sort of MPIDR
>> stuff that was removed from the arm64 implementation in 3102bc0e6ac7 ("arm64:
>> topology: Stop using MPIDR for topology information"). Could arm32 benefit from
>> the same shared implemenation too, or is usage of MPIDR only invalid for arm64?
> 
> I don't recall all the details but IIRC there are parts if arch_topology
> that are ARM64/RISC-V only. ARM32 doesn't use it as it may break old
> platforms. Some of the functions that still arm32 specific are retained
> in arch/arm
> 
>> The other difference is a call to update_cpu_capacity() in the arm32
>> implementation. Could that be moved to smp_store_cpu_info() which is the only
>> callsite of store_cpu_topology()?
>>
> 
> No please, leave arm32 as is. It was done for a reason like that and it
> help to not break some of the old 32-by platforms.

Thought that might be the case, I won't (and didn't) touch arm32!

Thanks,
Conor.