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authorJohannes Weiner2016-02-16 13:21:14 -0500
committerTejun Heo2016-02-16 13:26:02 -0500
commit1619b6d4fdd776b1b91bd288ad6f7e37fe183485 (patch)
treec69e1ffab2741d942bedd3e86a42d13a5bf6f168 /Documentation/cgroup-v2.txt
parent223ffb29f9723a4b485cacf6dc7e6d639fffc322 (diff)
cgroup: document cgroup_no_v1=
Add cgroup_no_v1= to kernel-parameters.txt, and a small blurb to cgroup-v2.txt section about transitioning from cgroup to cgroup2. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'Documentation/cgroup-v2.txt')
-rw-r--r--Documentation/cgroup-v2.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/cgroup-v2.txt b/Documentation/cgroup-v2.txt
index 9ae148ab1255..3922ae1654fd 100644
--- a/Documentation/cgroup-v2.txt
+++ b/Documentation/cgroup-v2.txt
@@ -132,6 +132,12 @@ strongly discouraged for production use. It is recommended to decide
the hierarchies and controller associations before starting using the
controllers after system boot.
+During transition to v2, system management software might still
+automount the v1 cgroup filesystem and so hijack all controllers
+during boot, before manual intervention is possible. To make testing
+and experimenting easier, the kernel parameter cgroup_no_v1= allows
+disabling controllers in v1 and make them always available in v2.
+
2-2. Organizing Processes