On 06/08/20 16:59, Tejun Heo 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. perf and bpf have file descriptors, system calls and data structures of their own, here there is simply none: it's just an array of chars. Can you explain _why_ it doesn't fit in the cgroupfs? Paolo
