Hello, Michael. On Mon, Dec 04, 2017 at 10:35:13PM +0100, Michael Kerrisk (man-pages) wrote: > I was trying to do some simple testing ot the CPU controller > that is merged into 4.15, and ran immediately into some confusion. > In the root cgroup on a freshly booted 4.150-rc1, I try the following: > > # pwd > /sys/fs/cgroup/unified > # echo '+cpu' > cgroup.subtree_control > sh: echo: write error: Invalid argument > > What am I missing> I presume I'm missing something obvious, although > nothing jumped out at me as I read the cgroups-v2.txt file.
Checking whether I messed up something really basic... hmmm doesn't seem that way. What do /sys/fs/cgroup/unified/cgroup.controllers and /proc/cgroups say? Thanks. -- tejun
