Hi TeJun 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 /] [root@bogon /]# cat cgroup2/cgroup.subtree_control [root@bogon /]# What's wrong with this kernel? Or maybe I lost some mount option? Thanks Yuzhoujian Tejun Heo <tj@xxxxxxxxxx> 于2019年2月19日周二 上午10:32写道： > > On Sat, Feb 16, 2019 at 08:56:04AM +0800, Yang Shi wrote: > > Since PSI has implemented some kind of measure of memory pressure, the > > 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 > > --- a/Documentation/admin-guide/cgroup-v2.rst > > +++ b/Documentation/admin-guide/cgroup-v2.rst > > @@ -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 > > -implemented yet. > > +memory. > > Maybe refer to PSI? > > Thanks. > > -- > tejun
