Linux Code Review Hub

Jan 28, 2024 · Fundamentals

When to Use RCU Locks for High‑Read Multi‑Core Embedded Kernels

The article compares spin_lock, rwlock, seqlock and RCU for protecting a shared kernel resource in a multi‑core embedded system, explains how RCU enables lock‑free reads, discusses the challenges of safe deletion, and outlines the RCU read‑copy‑update workflow.