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Documentation/x86: Documentation for MON group move feature

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Describe new support for moving MON groups to a new parent CTRL_MON
group and its restrictions.

Signed-off-by: Peter Newman <peternewman@google.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Tested-by: Babu Moger <babu.moger@amd.com>
Link: https://lore.kernel.org/r/20230419125015.693566-4-peternewman@google.com
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Peter Newman 2023-04-19 14:50:15 +02:00 committed by Borislav Petkov (AMD)
parent 8da2b938eb
commit e0a6ede2dd
1 changed files with 7 additions and 0 deletions
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Documentation/arch/x86/resctrl.rst
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@ -287,6 +287,13 @@ Removing a directory will move all tasks and cpus owned by the group it
represents to the parent. Removing one of the created CTRL_MON groups
will automatically remove all MON groups below it.
Moving MON group directories to a new parent CTRL_MON group is supported
for the purpose of changing the resource allocations of a MON group
without impacting its monitoring data or assigned tasks. This operation
is not allowed for MON groups which monitor CPUs. No other move
operation is currently allowed other than simply renaming a CTRL_MON or
MON group.
All groups contain the following files:
"tasks":