| --- |
| language: [en] |
| pretty_name: Kernel and MCU-OS C pool (code + design docs) |
| task_categories: [text-generation] |
| tags: [code, c, linux-kernel, rtos, embedded, domain-adaptation] |
| configs: |
| - config_name: default |
| data_files: |
| - {split: train, path: "data/train-*.parquet"} |
| - {split: heldout, path: "data/heldout-*.parquet"} |
| --- |
| # Kernel and MCU-OS C pool |
|
|
| Unmixed pool of C/assembly source and design documentation for domain-adaptive training of a kernel-level coding model. |
| Apply the mix at sampling time using the `bucket` column. |
|
|
| | bucket | content | est. tokens (train) | |
| |---|---|---| |
| | mcu | FreeRTOS, Zephyr, NuttX, RIOT, CMSIS, xv6, Contiki-NG, RT-Thread, U-Boot, OpenSBI, seL4, libopencm3 | ~116.5M | |
| | linux_gpu | drivers/gpu, video, accel | ~25.3M | |
| | linux_cpu | arch/*, cpufreq, cpuidle, irqchip, clocksource, perf, firmware | ~7.7M | |
| | linux_core | kernel, mm, fs, net, block, pci, usb, dma, include/linux ... | ~45.2M | |
| | docs | Linux Documentation/, Zephyr doc/, NuttX Documentation/, U-Boot doc/, RISC-V ISA manual, seL4 docs | ~14.4M | |
| |
| Token counts are byte-based estimates (3.6 bytes/token), not tokenizer counts. |
| |
| ## Columns |
| `text`, `path`, `bucket`, `source`, `spdx` (per-file SPDX tag if present, else the repository licence), `repo_license`, `commit` (upstream commit the file came from), `def_heavy` (file is >60% `#define` lines, typically register headers; consider down-sampling), `n_bytes`. |
| |
| ## Splits |
| `heldout` holds about 2% of directories (hash of the first 5 path components), so no directory appears in both splits. |
| Caution: heldout is skewed toward `mcu` (about 19 percent of files in the pool but most of heldout tokens); evaluate per bucket. |
| |
| ## Filters |
| Exact dedup (whitespace-normalised SHA-1 only; no near-duplicate removal), 300 B to 120 KB per code file (500 B to 150 KB for docs), generated-file and hex-table filters, test/sample/scripts/dts/board paths skipped for code, non-ASCII ratio limits. |
| |
| ## Licences (read before use) |
| Content keeps its upstream licences, mostly GPL-2.0 variants (Linux, U-Boot, seL4), Apache-2.0 (Zephyr, NuttX, RT-Thread, CMSIS), MIT, BSD, LGPL, and CC-BY-4.0 (RISC-V ISA manual). Per-file SPDX tags are preserved in `spdx`; see `LICENSES.json` for the upstream commit and licence files per documentation source. |
| Whether training on GPL code makes a model a derivative work is legally unsettled. This dataset does not resolve that; you are responsible for your use and for the licence terms when redistributing the data or derived weights. |
| |
| ## Not included |
| Commercial textbooks. Open-licensed books (e.g. LDD3, Mastering the FreeRTOS Real Time Kernel) are not yet added; their licences must be verified at source first. |
| |
