[PATCH v3 0/5] arm_mpam: resctrl: Counter Assignment (ABMC)

[Ben Horgan]

I forgot to say, the code can be found at:

https://gitlab.arm.com/linux-arm/linux-bh.git mpam_abmc_v3

On 5/11/26 16:41, Ben Horgan wrote:
> Removing the rfc tag as the resctrl precursors [1] have been queued in tip
> x86/cache. Due to that dependency, it would be good for this to also go through
> x86/cache.
> 
> This series adds support for memory bandwidth monitoring.
> 
> Please review and test.
> 
> Changelogs in patches.
> 
> [1] https://lore.kernel.org/all/20260506082855.3694761-1-ben.horgan@arm.com/
> 
> Description from the initial cover letter:
> 
> The MPAM counter assignment (ABMC emulation) changes that were dropped from
> the resctrl glue series due to some missing precursors in resctrl. Counter
> assignment enables bandwidth monitoring in systems that have fewer
> monitors than resctrl monitor groups.
> 
> rfc v1: https://lore.kernel.org/lkml/20260225205436.3571756-1-ben.horgan@arm.com/
> rfc v2: https://lore.kernel.org/lkml/20260319165540.381410-1-ben.horgan@arm.com/
> 
> Ben Horgan (2):
>   arm_mpam: resctrl: Pre-allocate assignable monitors
>   arm64: mpam: Add memory bandwidth usage (MBWU) documentation
> 
> James Morse (3):
>   arm_mpam: resctrl: Pick classes for use as mbm counters
>   arm_mpam: resctrl: Add resctrl_arch_config_cntr() for ABMC use
>   arm_mpam: resctrl: Add resctrl_arch_cntr_read() &
>     resctrl_arch_reset_cntr()
> 
>  Documentation/arch/arm64/mpam.rst |  17 ++
>  drivers/resctrl/mpam_internal.h   |   6 +-
>  drivers/resctrl/mpam_resctrl.c    | 306 +++++++++++++++++++++++++++---
>  3 files changed, 306 insertions(+), 23 deletions(-)
>