New read/write file to show/set the memory bandwidth event used to control bandwidth used by each ctrl_mon group. Signed-off-by: Tony Luck <tony.luck@xxxxxxxxx> --- Documentation/arch/x86/resctrl.rst | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Documentation/arch/x86/resctrl.rst b/Documentation/arch/x86/resctrl.rst index a824affd741d..d86081e76bbf 100644 --- a/Documentation/arch/x86/resctrl.rst +++ b/Documentation/arch/x86/resctrl.rst @@ -384,6 +384,16 @@ When monitoring is enabled all MON groups will also contain: Available only with debug option. The identifier used by hardware for the monitor group. On x86 this is the RMID. +When the "mba_MBps" mount option is used all CTRL_MON groups will also contain: + +"mba_MBps_event": + Reading this file shows which memory bandwidth event is used + as input to a software feedback loop to keep memory bandwidth + below the value specified in the schemata file. Writing the + name of one of the supported memory bandwidth events found in + /sys/fs/resctrl/info/L3_MON/monfeatures will change the input + event. + Resource allocation rules ------------------------- -- 2.47.0
