This section walks through selected sections of the Linux-kernel
hierarchical RCU code.
As such, this section is intended for hard-core hackers who wish
to understand hierarchical RCU at a very low level, and such hackers
should first read
Section .
Hard-core masochists might also be interested in reading this section.
Of course really hard-core masochists will read this section
before reading
Section
.
Section
describes data structures and kernel parameters,
Section
covers external function interfaces,
Section
presents the initialization process,
Section
explains the CPU-hotplug interface,
Section
covers miscellaneous utility functions,
Section
describes the mechanics of grace-period detection,
Section
presents the dynticks-idle interface,
Section
covers the functions that handle holdout CPUs (including offline and
dynticks-idle CPUs), and
Section
presents functions that report on stalled CPUs, namely those spinning
in kernel mode for many seconds.
Finally,
Section
reports on possible design flaws and fixes.