| Level 1 | Level 2 | Level 3 | Level 4 |
| ipc/shm.cpp | ipc/msg.cpp | Level 3 | - |
| ipc/sem.cpp | - | Level 3 | ipc/msgutil.cpp |
| include/linux/mm.h | Level 2 | Level 3 | Newipc/msgutil.h |
| include/linux/fs.h | Level 2 | Level 3 | Level 5 |
| include/linux/prefetch.h | Level 2 | Level 3 | Level 5 |
| include/linux/seq_file.h | Level 2 | Level 3 | Level 5 |
| include/linux/irq.h | Level 2 | Level 3 | Level 5 |
| include/linux/aio.h | Level 2 | Level 3 | Level 5 |
| include/linux/list.h | Level 2 | Level 3 | Level 5 |
| include/linux/sched.h | Level 2 | Level 3 | Level 5 |
| include/linux/sysfs.h | Level 2 | Level 3 | Level 5 |
| include/linux/rbtree.h | Level 2 | Level 3 | Level 5 |
| include/linux/spinlock_types.h | Level 2 | Level 3 | Level 5 |
| include/linux/binfmts.h | Level 2 | Level 3 | Level 5 |
| include/linux/signal.h | Level 2 | Level 3 | Level 5 |
| include/linux/syscalls.h | Level 2 | Level 3 | Level 5 |
| include/linux/wait.h | Level 2 | Level 3 | Level 5 |
| include/linux/namespace.h | Level 2 | Level 3 | Level 5 |
| include/asm/elf.h | Level 2 | Level 3 | Level 5 |
| include/asm/system.h | Level 2 | Level 3 | Level 5 |
| linux/security.h | Level 2 | Level 3 | Level 4 |
| linux/spinlock.h | Level 2 | Level 3 | Level 4 |