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(-)
>