linux-kernel - [PATCH v6 3/3] Documentation/x86: Documentation for MON group move feature

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 19 Apr 2023 14:50:15 +0200
From:   Peter Newman <peternewman@...gle.com>
To:     fenghua.yu@...el.com, reinette.chatre@...el.com
Cc:     Babu.Moger@....com, bp@...en8.de, dave.hansen@...ux.intel.com,
        eranian@...gle.com, gupasani@...gle.com, hpa@...or.com,
        james.morse@....com, linux-kernel@...r.kernel.org,
        mingo@...hat.com, skodak@...gle.com, tglx@...utronix.de,
        tony.luck@...el.com, x86@...nel.org,
        Peter Newman <peternewman@...gle.com>
Subject: [PATCH v6 3/3] 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@...gle.com>
Reviewed-by: Reinette Chatre <reinette.chatre@...el.com>
---
 Documentation/x86/resctrl.rst | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/x86/resctrl.rst b/Documentation/x86/resctrl.rst
index 387ccbcb558f..cb05d90111b4 100644
--- a/Documentation/x86/resctrl.rst
+++ b/Documentation/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":
-- 
2.40.0.634.g4ca3ef3211-goog