a = lttv_attribute_find_subdir(tcs->stats, LTTV_STATS_PROCESSES);
a = lttv_attribute_find_subdir(a, pid_time);
a = lttv_attribute_find_subdir(a, LTTV_STATS_CPU);
a = lttv_attribute_find_subdir(tcs->stats, LTTV_STATS_PROCESSES);
a = lttv_attribute_find_subdir(a, pid_time);
a = lttv_attribute_find_subdir(a, LTTV_STATS_CPU);