Hi all, Sharing a userspace reader-writer lock that has been running in production in a DPDK-based network function for several years and wanted to check if there would be interest in contributing it to DPDK as rte_eprwlock.
The Enhanced Passive Reader-Writer (EPRW) lock eliminates atomic operations on the reader fast path, giving near-flat per-reader performance as core count grows. It is compatible with poll-mode lcore discipline — no heartbeat or periodic refresh required from registered threads. Details, correctness proof, memory ordering analysis (x86-TSO and ARM), and performance evaluation against rte_rwlock and pthread_rwlock_t are in a preprint at: https://zenodo.org/records/22636501 Would this be a useful addition to DPDK? Regards, Mukul Katiyar Versa Networks
