Hi Babu, On 22/01/2025 20:20, Babu Moger wrote: > The ABMC feature provides an option to the user to assign a hardware > counter to an RMID, event pair and monitor the bandwidth as long as it > is assigned. The assigned RMID will be tracked by the hardware until the > user unassigns it manually. > > Implement an architecture-specific handler to assign and unassign the > counter. Configure counters by writing to the L3_QOS_ABMC_CFG MSR, > specifying the counter ID, bandwidth source (RMID), and event > configuration. > > The feature details are documented in the APM listed below [1]. > [1] AMD64 Architecture Programmer's Manual Volume 2: System Programming > Publication # 24593 Revision 3.41 section 19.3.3.3 Assignable Bandwidth > Monitoring (ABMC). > diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/resctrl/internal.h > index acac7972cea4..161d3feb567c 100644 > --- a/arch/x86/kernel/cpu/resctrl/internal.h > +++ b/arch/x86/kernel/cpu/resctrl/internal.h > @@ -724,4 +724,7 @@ unsigned int mon_event_config_index_get(u32 evtid); > void resctrl_arch_mon_event_config_set(void *info); > u32 resctrl_arch_mon_event_config_get(struct rdt_mon_domain *d, > enum resctrl_event_id eventid); > +int resctrl_arch_config_cntr(struct rdt_resource *r, struct rdt_mon_domain *d, > + enum resctrl_event_id evtid, u32 rmid, u32 closid, > + u32 cntr_id, bool assign); > #endif /* _ASM_X86_RESCTRL_INTERNAL_H */ Could this be added to include/linux/resctrl.h instead? Its where it needs to end up eventually. Thanks, James
