Tagged articles

Seqlock

2 articles · Page 1 of 1

Apr 28, 2026 · Fundamentals

How Linux Kernel’s Seqlock Eliminates Lock Contention for High‑Performance Concurrency

The article explains the Linux kernel Seqlock mechanism—a lightweight lock‑free synchronization primitive that uses a sequence number and a spinlock to allow concurrent reads and writes, compares it with spinlocks and rwlocks, and shows real kernel and user‑space examples.

Linux kernelLock-FreeSeqlock

0 likes · 24 min read

How Linux Kernel’s Seqlock Eliminates Lock Contention for High‑Performance Concurrency

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.

RCUSeqlockconcurrency

0 likes · 10 min read

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