Individual skill

kernel-internals

Use when diagnosing scheduler latency, kmalloc vs vmalloc, page cache, meminfo under pressure, or OOM victim choice, or when reading kernel/sched, mm, or fs source.

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

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License: Apache-2.0

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# Kernel internals

## Contract

| Field | Bound contract |
|---|---|
| Trigger | A diagnosis or explanation inside the scheduler, the memory allocators, the VFS, the page cache, or the OOM killer; also reading kernel source in `kernel/sched/`, `mm/`, or `fs/`. |
| Authority | Read-only. Analysis and measurements stay in chat; no file writes, no rollback needed. No remote mutation. |
| Side effect | A subsystem diagnosis grounded in the running kernel's version and measurements. Nothing is written. |
| Done | The observed behavior is explained by one subsystem mechanism with the measurement that confirms it, or the mismatch between the claim and the kernel is named. |

## Inputs

1. The question or symptom (required): latency, allocation failure, cache behavior, memory pressure, OOM victim.