D.1.1 SRCU Implementation Strategy
The primary challenge in designing an SRCU
is to prevent any given task sleeping in an RCU read-side
critical section from blocking an unbounded number of RCU callbacks.
SRCU uses two strategies to achieve this goal:
- refusing to provide asynchronous grace-period interfaces,
such as the Classic RCU's call_rcu() API, and
- isolating grace-period detection within each subsystem using SRCU.
The rationale for these strategies are discussed in the following sections.
Subsections
Paul E. McKenney
2011-12-16