I've built the 5.0.0-rc6 kernel with psi option, but I cannot find any
cgroup.controllers when I mounted cgroup2.
[root@bogon /]# uname -r
[root@bogon /]# 5.0.0-rc6+
[root@bogon /]# mount -t cgroup2 none cgroup2/
[root@bogon /]# cat cgroup2/cgroup.controllers
[root@bogon /]# cat cgroup2/cgroup.subtree_control
What's wrong with this kernel? Or maybe I lost some mount option?
Tejun Heo <tj@xxxxxxxxxx> ä2019å2æ19æåä äå10:32åéï
On Sat, Feb 16, 2019 at 08:56:04AM +0800, Yang Shi wrote:
Since PSI has implemented some kind of measure of memory pressure, theMaybe refer to PSI?
statement about lack of such measure is not true anymore.
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Jonathan Corbet <corbet@xxxxxxx>
Signed-off-by: Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx>
Documentation/admin-guide/cgroup-v2.rst | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst
index 7bf3f12..9a92013 100644
@@ -1310,8 +1310,7 @@ network to a file can use all available memory but can also operate as
performant with a small amount of memory. A measure of memory
pressure - how much the workload is being impacted due to lack of
memory - is necessary to determine whether a workload needs more
-memory; unfortunately, memory pressure monitoring mechanism isn't