BFE EngineeringandClaude Opus 4.8
5a9432b8bc
Make the self-hosted kernel-build runnable with zero manual toolchain/python setup on the runner host (docs/ci-cd.md steps 3-4 move into the workflow): - build/build-kernel.sh: honor a caller-provided CROSS_COMPILE (default stays the Luckfox uclibc prefix). The kernel is freestanding, so a generic arm cross compiler links it. - kernel-build job: set CROSS_COMPILE=arm-linux-gnueabihf- (Debian gcc-arm-linux-gnueabihf, already on 0640) instead of depending on the ephemeral SDK checkout path; symlink python->python3 into $RUNNER_TEMP/bin on $GITHUB_PATH for the bare-`python` SDK quirk. - docs/ci-cd.md: only steps 1-2 (systemd service + cgroup cap) still need 0640 sudo. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_017wB8KB3MMQztRDXCMCkPrf
48 lines
2.9 KiB
Markdown
48 lines
2.9 KiB
Markdown
# CI/CD
|
||
|
||
`.github/workflows/ci.yml` — everything portable runs on GitHub-hosted
|
||
`ubuntu-latest`; only the heavy kernel build uses the self-hosted runner.
|
||
|
||
## Jobs
|
||
|
||
| Job | Runner | What it does |
|
||
|---|---|---|
|
||
| `test` | ubuntu-latest | `cargo test` (sim + config-lint) + `cargo-llvm-cov` line coverage on `sim`; outputs `passed`/`coverage`. |
|
||
| `mcdc` | ubuntu-latest | 100% MC/DC enforced on every `drivers/*/test` (gcc-14 `-fcondition-coverage`). |
|
||
| `bench` | ubuntu-latest | Smoke-runs the sim micro-benchmarks; emits ns/op trend JSON. |
|
||
| `patches-apply` | ubuntu-latest | Fetches pristine linux-6.18.46 (cached, sha256-verified) and applies `patches/*` in order. |
|
||
| `kernel-build` | **[self-hosted, warden-sdk]** | `build/build-kernel.sh` → `zImage` + `rv1106-warden.dtb`, uploaded as an artifact. Dispatch-gated until the runner is fully provisioned (below). |
|
||
| `badges` | ubuntu-latest | Renders loc/tests/coverage shields on push to `main` (`[skip ci]` + `paths-ignore` loop guard). |
|
||
|
||
## The self-hosted runner (`bfe-mpc-0640`)
|
||
|
||
A **third** repo-scoped runner instance on `bfe-mpc-0640` (alongside `flare` and
|
||
`flare-edge`), registered with the label **`warden-sdk`** as
|
||
`bfe-mpc-0640-warden-sdk`, in `~/actions-runner-warden-sdk`. The registration is
|
||
done. **Steps 1–2 below need `user`'s sudo on 0640** (systemd service + cgroup —
|
||
not automatable from the dev box); **steps 3–4 are handled inside the workflow**, so
|
||
the runner host needs no manual toolchain/python setup.
|
||
|
||
1. **Install as a service** (persistence): `cd ~/actions-runner-warden-sdk &&
|
||
sudo ./svc.sh install user && sudo ./svc.sh start`. Until then the runner is
|
||
*offline* and `kernel-build` only runs when dispatched against an online runner.
|
||
2. **Resource cap** (protect the shared host): a drop-in at
|
||
`/etc/systemd/system/actions.runner.bfe-noah-warden-sdk.*.service.d/*.conf` with
|
||
`CPUQuota=400%` + `MemoryMax=6G`, then `sudo systemctl daemon-reload`. The build
|
||
inherits that cgroup. (The workflow also passes `JOBS=4` as a belt-and-braces bound.)
|
||
3. **Kernel cross toolchain** — done in the workflow: the `kernel-build` job sets
|
||
`CROSS_COMPILE=arm-linux-gnueabihf-` (Debian `gcc-arm-linux-gnueabihf`, already on
|
||
the runner) and `build-kernel.sh` honors it. The kernel is freestanding, so the
|
||
generic arm cross compiler links it — no Luckfox SDK toolchain path needed. (To use
|
||
the SDK uclibc toolchain instead, set `SDK_TC` to its `bin/` and drop the override.)
|
||
4. **`python`** (not python3) — done in the workflow: the `kernel-build` job symlinks
|
||
`python`→`python3` into `$RUNNER_TEMP/bin` and prepends it to `$GITHUB_PATH`. No
|
||
host-side venv/shim needed.
|
||
|
||
Host build deps: `dtc bc flex bison libssl-dev` — already present on 0640.
|
||
|
||
## Badges
|
||
|
||
Static shields SVGs are committed by the `badges` job (private repo can't use
|
||
dynamic shields). The GitHub-native `ci.yml` status badge works live regardless.
|