[PATCH v2 36/45] arm_mpam: resctrl: Update the rmid reallocation limit

[Jonathan Cameron]

On Fri, 19 Dec 2025 18:11:38 +0000
Ben Horgan <ben.horgan at arm.com> wrote:

> From: James Morse <james.morse at arm.com>
> 
> 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.
> 
> Querying the cache size can't happen until after cacheinfo_sysfs_init() has
> run, so mpam_resctrl_setup() must wait until then.
> 
> Signed-off-by: James Morse <james.morse at arm.com>
> Signed-off-by: Ben Horgan <ben.horgan at arm.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron at huawei.com>