Re: [PATCH v6 31/40] arm_mpam: resctrl: Update the rmid reallocation limit

[Gavin Shan]

On 3/14/26 12:46 AM, Ben Horgan wrote:
> From: James Morse <james.morse@xxxxxxx>
>
> resctrl's limbo code needs to be told when the data left in a cache is
> small enough for the partid+pmg value to be re-allocated.
>
> x86 uses the cache size divided by the number of rmid users the cache may
> have. Do the same, but for the smallest cache, and with the number of
> partid-and-pmg users.
>
> Tested-by: Gavin Shan <gshan@xxxxxxxxxx>
> Tested-by: Shaopeng Tan <tan.shaopeng@xxxxxxxxxxxxxx>
> Tested-by: Peter Newman <peternewman@xxxxxxxxxx>
> Tested-by: Zeng Heng <zengheng4@xxxxxxxxxx>
> Tested-by: Punit Agrawal <punit.agrawal@xxxxxxxxxxxxxxxx>
> Reviewed-by: Zeng Heng <zengheng4@xxxxxxxxxx>
> Reviewed-by: Shaopeng Tan <tan.shaopeng@xxxxxxxxxxxxxx>
> Reviewed-by: Jonathan Cameron <jonathan.cameron@xxxxxxxxxx>
> Signed-off-by: James Morse <james.morse@xxxxxxx>
> Signed-off-by: Ben Horgan <ben.horgan@xxxxxxx>
> ---
> Changes since v2:
> Move waiting for cache info into it's own patch
>
> Changes since v3:
> Move check class is csu higher (just kept to document intent)
> continue -> break
>
> to squash update rmid limits
> use raw_smp_processor_id()
> ---
>   drivers/resctrl/mpam_resctrl.c | 39 ++++++++++++++++++++++++++++++++++
>   1 file changed, 39 insertions(+)

Reviewed-by: Gavin Shan <gshan@xxxxxxxxxx>