Hello, Paolo. On Thu, Aug 06, 2020 at 04:54:21PM +0200, Paolo Bonzini wrote: > If I understand correctly, your only objection is that you'd rather not > have it specified with a file under /sys/kernel/cgroup, and instead you > would prefer to have it implemented as a ioctl for a magic file > somewhere else in sysfs? I don't think there is any precedent for this, > and I'm not even sure where that sysfs file would be. It just doesn't fit in the cgroupfs. I don't know where it should go for this specific case. That's for you guys to figure out. There are multiple precedences - e.g. how perf or bpf hooks into cgroup and others that I can't remember off the top of my head. Thanks. -- tejun