fetch_pptt_node
cpu_node = fetch_pptt_node(table_hdr, cpu_node->parent);
cpu_node = fetch_pptt_node(table_hdr, cpu_node->parent);
next = fetch_pptt_node(table_hdr, cpu->parent);
prev_node = fetch_pptt_node(table_hdr, cpu->parent);
cluster_node = fetch_pptt_node(table, cpu_node->parent);
cluster_node = fetch_pptt_node(table, cluster_node->parent);
cpu_node = fetch_pptt_node(table_hdr, cpu_node->parent);