Enable the mbm_l3_assignments resctrl file to be used to modify counter
assignments of CTRL_MON and MON groups when the "mbm_event" counter
assignment mode is enabled.
Process the assignment modifications in the following format:
<Event>:<Domain id>=<Assignment state>;<Domain id>=<Assignment state>
Event: A valid MBM event in the
/sys/fs/resctrl/info/L3_MON/event_configs directory.
Domain ID: A valid domain ID. When writing, '*' applies the changes
to all domains.
Assignment states:
_ : Unassign a counter.
e : Assign a counter exclusively.
Examples:
$ cd /sys/fs/resctrl
$ cat /sys/fs/resctrl/mbm_L3_assignments
mbm_total_bytes:0=e;1=e
mbm_local_bytes:0=e;1=e
To unassign the counter associated with the mbm_total_bytes event on
domain 0:
$ echo "mbm_total_bytes:0=_" > mbm_L3_assignments
$ cat /sys/fs/resctrl/mbm_L3_assignments
mbm_total_bytes:0=_;1=e
mbm_local_bytes:0=e;1=e
To unassign the counter associated with the mbm_total_bytes event on
all the domains:
$ echo "mbm_total_bytes:*=_" > mbm_L3_assignments
$ cat /sys/fs/resctrl/mbm_L3_assignments
mbm_total_bytes:0=_;1=_
mbm_local_bytes:0=e;1=e
Signed-off-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lore.kernel.org/cover.1757108044.git.babu.moger@amd.com
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