The following commit has been merged into the x86/cache branch of tip: Commit-ID: e0a6ede2dd884adb73a7dde80444185b655f7c79 Gitweb: https://git.kernel.org/tip/e0a6ede2dd884adb73a7dde80444185b655f7c79 Author: Peter Newman <peternewman@xxxxxxxxxx> AuthorDate: Wed, 19 Apr 2023 14:50:15 +02:00 Committer: Borislav Petkov (AMD) <bp@xxxxxxxxx> CommitterDate: Wed, 07 Jun 2023 12:42:12 +02:00 Documentation/x86: Documentation for MON group move feature Describe new support for moving MON groups to a new parent CTRL_MON group and its restrictions. Signed-off-by: Peter Newman <peternewman@xxxxxxxxxx> Signed-off-by: Borislav Petkov (AMD) <bp@xxxxxxxxx> Reviewed-by: Reinette Chatre <reinette.chatre@xxxxxxxxx> Tested-by: Babu Moger <babu.moger@xxxxxxx> Link: https://lore.kernel.org/r/20230419125015.693566-4-peternewman@xxxxxxxxxx --- Documentation/arch/x86/resctrl.rst | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/arch/x86/resctrl.rst b/Documentation/arch/x86/resctrl.rst index 387ccbc..cb05d90 100644 --- a/Documentation/arch/x86/resctrl.rst +++ b/Documentation/arch/x86/resctrl.rst @@ -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":
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