===== Kbuild system =====
===== General setup =====
==== cgroups ====
==== namespaces ====
===== System calls =====
===== UAPI =====
===== IRQ =====
===== Concurrency =====
==== mutex ====
==== semaphore ====
==== spinlock ====
==== completion ====
==== RCU ====
===== Timers =====
==== Standard timers ====
==== HR timers ====
==== Tickless kernel ====
===== Driver model =====
===== Device model =====
===== Debugging =====
==== Macros ====
==== Dynamic debugging ====
==== ftrace ====
===== Virtual filesystems =====
==== sysfs ====
==== debugfs ====