[PATCH v6 1/3] x86,fs/resctrl: Add resctrl_arch_preconvert_bw()

[Gavin Shan]

On 9/12/26 2:36 AM, Ben Horgan wrote:
> From: Dave Martin <dave.martin at arm.com>
> 
> On MPAM systems the rounding behaviour of the MBA control would be improved
> if the rounding in the fs/resctrl code is removed but this is not the
> case for x86. To allow any rounding or conversion of the bandwidth value
> provided by the user to be specified by the arch code a new arch hook is
> required.
> 
> Introduce resctrl_arch_preconvert_bw(), and add its x86 implementation.
> This is currently unused in resctrl but when plumbed in it will replace the
> call to roundup() in bw_validate().
> 
> Signed-off-by: Dave Martin <dave.martin at arm.com>
> Signed-off-by: Ben Horgan <ben.horgan at arm.com>
> Reviewed-by: Reinette Chatre <reinette.chatre at intel.com>
> ---
> Changes since Dave's v2:
> Split from larger patch and add commit message
> Update kernel-doc (Reinette)
> 
> Changes since v3:
> Swap parameter order (Reinette)
> Change summary prefix include fs/resctrl (Reinette)
> val -> @val
> Add Reinette's R-b
> 
> Changes since v4:
> Set author to Dave as he wrote the patch
> ---
>   arch/x86/kernel/cpu/resctrl/ctrlmondata.c |  6 ++++++
>   include/linux/resctrl.h                   | 19 +++++++++++++++++++
>   2 files changed, 25 insertions(+)
> 
Reviewed-by: Gavin Shan <gshan at redhat.com>