Merge "Check and write some error in atrace." am: 7b50c020 am: 89c634b6 am: 651068c9

            hidl_string fqInterfaceName = fqInstanceName.substr(0, n);

            hidl_string instanceName = fqInstanceName.substr(n+1, std::string::npos);

            auto getRet = sm->get(fqInterfaceName, instanceName, [&](const auto &interface) {

                interface->notifySyspropsChanged();

                auto notifyRet = interface->notifySyspropsChanged();

                if (!notifyRet.isOk()) {

                    fprintf(stderr, "failed to notifySyspropsChanged on service %s: %s\n",

                            fqInstanceName.c_str(),

                            notifyRet.getStatus().toString8().string());

                }

            });

            if (!getRet.isOk()) {

                fprintf(stderr, "failed to get service %s: %s\n",