[RFC 2/4] arch-topology: add a default implementation of store_cpu_topology()

[Sudeep Holla]

On Thu, Jul 07, 2022 at 11:04:35PM +0100, Conor Dooley wrote:
> From: Conor Dooley <conor.dooley at microchip.com>
> 
> RISC-V & arm64 both use an almost identical method of filling in
> default vales for arch topology. Create a weakly defined default
> implementation with the intent of migrating both archs to use it.
> 
> Signed-off-by: Conor Dooley <conor.dooley at microchip.com>
> ---
>  drivers/base/arch_topology.c  | 19 +++++++++++++++++++
>  include/linux/arch_topology.h |  1 +
>  2 files changed, 20 insertions(+)
> 
> diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c
> index 441e14ac33a4..07e84c6ac5c2 100644
> --- a/drivers/base/arch_topology.c
> +++ b/drivers/base/arch_topology.c
> @@ -765,6 +765,25 @@ void update_siblings_masks(unsigned int cpuid)
>  	}
>  }
>  
> +void __weak store_cpu_topology(unsigned int cpuid)

I prefer to have this as default implementation. So just get the risc-v
one pushed to upstream first(for v5.20) and get all the backports if required.
Next cycle(i.e. v5.21), you can move both RISC-V and arm64.

-- 
Regards,
Sudeep