From e0a6ede2dd884adb73a7dde80444185b655f7c79 Mon Sep 17 00:00:00 2001 From: Peter Newman Date: Wed, 19 Apr 2023 14:50:15 +0200 Subject: 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 Signed-off-by: Borislav Petkov (AMD) Reviewed-by: Reinette Chatre Tested-by: Babu Moger Link: https://lore.kernel.org/r/20230419125015.693566-4-peternewman@google.com --- Documentation/arch/x86/resctrl.rst | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'Documentation/arch') diff --git a/Documentation/arch/x86/resctrl.rst b/Documentation/arch/x86/resctrl.rst index 387ccbcb558f..cb05d90111b4 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": -- cgit v1.2.3-73-gaa49b