Individual skill

kernel-concurrency

Use when choosing kernel spinlocks versus mutexes, using RCU, seqlocks, completions, or memory barriers, or debugging scheduling-while-atomic. Not for userspace atomics: use concurrency-debugging.

.devin/skills/kernel-concurrency/SKILL.md

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Last checked: Nov 4, 2026

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Repository last updated: Sep 28, 2026
License: Apache-2.0

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# Kernel concurrency

## Contract

| Field | Bound contract |
|---|---|
| Trigger | Synchronizing Linux kernel code: lock selection between IRQ and process context, spinlock and mutex usage, RCU read sides, seqlocks, completions, memory barriers, or a `scheduling while atomic` splat. |
| Authority | Read-only. Writes nothing. Chat output only. No remote mutation. |
| Side effect | Returns locking designs and code patterns. No source files are modified. |
| Done | The lock choice with its context rule, the code pattern, and a fix for any reported splat are delivered. |

## Inputs

1. Shared data (required): what is protected, and which contexts touch it (IRQ, softirq, process).