Hi Reinette, On 8/16/24 16:42, Reinette Chatre wrote: > Hi Babu, > > On 8/6/24 3:00 PM, Babu Moger wrote: >> In ABMC mode, the hardware counter should be assigned to read the MBM >> events. >> >> Report "Unassigned" in case the user attempts to read the events without >> assigning the counter. >> >> Signed-off-by: Babu Moger <babu.moger@xxxxxxx> >> --- >> v6: Added more explaination in the resctrl.rst >> Added checks to detect "Unassigned" before reading RMID. >> >> v5: New patch. >> --- >> Documentation/arch/x86/resctrl.rst | 11 +++++++++++ >> arch/x86/kernel/cpu/resctrl/ctrlmondata.c | 13 ++++++++++++- >> 2 files changed, 23 insertions(+), 1 deletion(-) >> >> diff --git a/Documentation/arch/x86/resctrl.rst >> b/Documentation/arch/x86/resctrl.rst >> index fe9f10766c4f..aea440ee6107 100644 >> --- a/Documentation/arch/x86/resctrl.rst >> +++ b/Documentation/arch/x86/resctrl.rst >> @@ -294,6 +294,17 @@ with the following files: >> "num_mbm_cntrs": >> The number of monitoring counters available for assignment. >> + Resctrl subsystem provides the interface to count maximum of two >> + MBM events per group, from a combination of total and local events. >> + Keeping the current interface, users can assign a maximum of two >> + monitoring counters per group. User will also have the option to >> + enable only one counter to the group. >> + >> + With limited number of counters, system can run out of assignable >> counters. >> + In mbm_cntr_assign mode, the MBM event counters will return >> "Unassigned" if >> + the counter is not assigned to the event when read. Users need to >> assign a >> + counter manually to read the events. > > This seems more appropriate for the "mon_data" section. Sure. Will do. -- Thanks Babu Moger
