Merge "Don't retry kill if cgroups isn't available"

            *max_processes = processes;

        }

        LOG(VERBOSE) << "Killed " << processes << " processes for processgroup " << initialPid;

        if (!CgroupsAvailable()) {

            // makes no sense to retry, because there are no cgroup_procs file

            processes = 0;  // no remaining processes

            break;

        }

        if (retry > 0) {

            std::this_thread::sleep_for(5ms);

            --retry;