chan->attr.subbuf_size = default_get_ust_channel_subbuf_size();
chan->attr.num_subbuf = DEFAULT_UST_CHANNEL_SUBBUF_NUM;
chan->attr.output = DEFAULT_UST_CHANNEL_OUTPUT;
chan->attr.subbuf_size = default_get_ust_channel_subbuf_size();
chan->attr.num_subbuf = DEFAULT_UST_CHANNEL_SUBBUF_NUM;
chan->attr.output = DEFAULT_UST_CHANNEL_OUTPUT;