Hi Babu, On 8/14/25 7:25 PM, Babu Moger wrote: > System software reads resctrl event data for a particular resource by > writing the RMID and Event Identifier (EvtID) to the QM_EVTSEL register and > then reading the event data from the QM_CTR register. > > In ABMC mode, the event data of a specific counter ID is read by setting > the following fields: QM_EVTSEL.ExtendedEvtID = 1, QM_EVTSEL.EvtID = > L3CacheABMC (=1) and setting QM_EVTSEL.RMID to the desired counter ID. > Reading the QM_CTR then returns the contents of the specified counter ID. > RMID_VAL_ERROR bit is set if the counter configuration is invalid, or > if an invalid counter ID is set in the QM_EVTSEL.RMID field. > RMID_VAL_UNAVAIL bit is set if the counter data is unavailable. > > Introduce resctrl_arch_reset_cntr() and resctrl_arch_cntr_read() to reset > and read event data for a specific counter. > > Signed-off-by: Babu Moger <babu.moger@xxxxxxx> > --- Reviewed-by: Reinette Chatre <reinette.chatre@xxxxxxxxx> Reinette
