Re: [PATCH] s390/topology: Switch to common cpu capacity code

[Heiko Carstens <hca@linux.ibm.com>]

On Tue, Aug 25, 2026 at 02:58:20PM +0200, Mete Durlu wrote:
> s390 implementation of cpu capacity management infrastructure code does
> not do anything different than its common code counterpart. Switch to
> common code functions and remove the smp_cpu_*_capacity() functions.
> Make s390 code better align with other architectures which utilize
> cpu_capacity. No functional changes.
> 
> Allow cpu_capacity attributes inside sysfs to accurately reflect cpu
> capacity.
> ex:
> 
> $ cat /sys/devices/system/cpu/cpu0/polarization
> vertical:high
> $ cat /sys/devices/system/cpu/cpu0/cpu_capacity
> 1024
> 
> $ cat /sys/devices/system/cpu/cpu40/polarization
> vertical:low
> $ cat /sys/devices/system/cpu/cpu40/cpu_capacity
> 128
> 
> Prior to commit 6bceea7a1e07 ("arch_topology: Relocate cpu_scale to
> topology.[h|c]") cpu_capacity attribute was only available to the common
> arch_topology driver's users. Reflect the correct values to the newly
> made available attributes.
> 
> Signed-off-by: Mete Durlu <meted@linux.ibm.com>
> ---
>  arch/s390/include/asm/processor.h |  1 -
>  arch/s390/include/asm/smp.h       |  4 +---
>  arch/s390/kernel/smp.c            | 16 +++-------------
>  arch/s390/kernel/topology.c       |  2 +-
>  4 files changed, 5 insertions(+), 18 deletions(-)

Reviewed-by: Heiko Carstens <hca@linux.ibm.com>