Commit faf6ef67 authored by Tony Luck's avatar Tony Luck Committed by Borislav Petkov (AMD)
Browse files

x86/resctrl: Document the new "mba_MBps_event" file 



Add a section to document a new read/write file that shows/sets the memory
bandwidth event used to control bandwidth used by each CTRL_MON group.

Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
Signed-off-by: default avatarBorislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: default avatarReinette Chatre <reinette.chatre@intel.com>
Tested-by: default avatarBabu Moger <babu.moger@amd.com>
Link: https://lore.kernel.org/r/20241206163148.83828-9-tony.luck@intel.com
parent 8e931105

Documentation/arch/x86/resctrl.rst

+10 −0
Original line number Diff line number Diff line
@@ -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 the software feedback loop that keeps 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/mon_features changes the input

	event.



Resource allocation rules

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