docs: Update RCU's hotplug requirements with a bit about design
RCU's hotplug design will help understand the requirements an RCU
implementation needs to fullfill, such as dead-lock avoidance.
The rcu_barrier() section of the "Hotplug CPU" section already talks
about deadlocks, however the description of what else can deadlock other
than rcu_barrier is rather incomplete.
This commit therefore continues the section by describing how RCU's
design handles CPU hotplug in a deadlock-free way.
Signed-off-by: Joel Fernandes (Google) <email@example.com>
1 file changed