Recursive Read Deadlocks and Where to Find Them

Explore a conference talk from the Linux Plumbers Conference that delves into improving deadlock detection in the Linux kernel, particularly for read/write locks. Learn about the limitations of the current Lockdep tool and the challenges posed by the adoption of queued rwlock implementations in major architectures. Discover the proposed patchset for enhancing read/write deadlock detection in Lockdep, including its algorithm, correctness reasoning, and implementation details. Gain insights into recursive read deadlocks and how to detect them effectively. Understand the importance of this topic for kernel developers and potential users, as well as its implications for improving overall kernel stability and performance.