ltt_chan->commit_count_mask = (~0UL >> ltt_chan->n_subbufs_order);
ltt_chan->n_cpus = get_n_cpus();
//ust// ltt_chan->buf = percpu_alloc_mask(sizeof(struct ltt_channel_buf_struct), GFP_KERNEL, cpu_possible_map);
ltt_chan->commit_count_mask = (~0UL >> ltt_chan->n_subbufs_order);
ltt_chan->n_cpus = get_n_cpus();
//ust// ltt_chan->buf = percpu_alloc_mask(sizeof(struct ltt_channel_buf_struct), GFP_KERNEL, cpu_possible_map);