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Commit b0947e00 authored by Bart Van Assche's avatar Bart Van Assche
Browse files

libprocessgroup: Proceed if activation of an optional controller fails 



Not all Android kernels support all the cgroup controllers mentioned in
task_profiles.json and/or cgroups.json. Support such kernels by ignoring
certain cgroup activation failures.

Bug: 213617178
Change-Id: I90c0bd959f8a6484c4f2fbc895845e073527271e
Signed-off-by: default avatarBart Van Assche <bvanassche@google.com>
parent 1ec6ec4f

libprocessgroup/cgroup_map.cpp

+6 −1
Original line number Diff line number Diff line
@@ -234,10 +234,15 @@ int CgroupMap::ActivateControllers(const std::string& path) const { 
                std::string str("+");

                str.append(ACgroupController_getName(controller));

                if (!WriteStringToFile(str, path + "/cgroup.subtree_control")) {

                    if (flags & CGROUPRC_CONTROLLER_FLAG_OPTIONAL) {

                        PLOG(WARNING) << "Activation of cgroup controller " << str

                                      << " failed in path " << path;

                    } else {

                        return -errno;

                    }

                }

            }

        }

        return 0;

    }

    return -ENOSYS;