[tip:,x86/cache] Documentation/x86: Documentation for MON group move feature
Commit Message
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@google.com>
AuthorDate: Wed, 19 Apr 2023 14:50:15 +02:00
Committer: Borislav Petkov (AMD) <bp@alien8.de>
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@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
---
Documentation/arch/x86/resctrl.rst | 7 +++++++
1 file changed, 7 insertions(+)
@@ -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":