Hi Babu, On 7/8/25 3:17 PM, Babu Moger wrote: > The "mbm_event" counter assignment mode allows users to assign a hardware > counter to an RMID, event pair and monitor bandwidth usage as long as it is > assigned. The hardware continues to track the assigned counter until it is > explicitly unassigned by the user. Counters are assigned/unassigned at > monitoring domain level. > > Manage a monitoring domain's hardware counters using a per monitoring > domain array of struct mbm_cntr_cfg that is indexed by the hardware > counter ID. A hardware counter's configuration contains the MBM event > ID and points to the monitoring group that it is assigned to, with a NULL > pointer meaning that the hardware counter is available for assignment. > > There is no direct way to determine which hardware counters are assigned > to a particular monitoring group. Check every entry of every hardware > counter configuration array in every monitoring domain to query which > MBM events of a monitoring group is tracked by hardware. Such queries are > acceptable because of a very small number of assignable counters (32 > to 64). > > Suggested-by: Peter Newman <peternewman@xxxxxxxxxx> > Signed-off-by: Babu Moger <babu.moger@xxxxxxx> > --- Reviewed-by: Reinette Chatre <reinette.chatre@xxxxxxxxx> Reinette
