Test workflow with LLVM trunk and Linux mainline #76
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| name: Test workflow with LLVM trunk and Linux mainline | |
| on: | |
| push: | |
| branches: | |
| - llvm-trunk | |
| - llvm-trunk-next | |
| paths: | |
| - '.github/workflows/llvm-trunk-linux-mainline.yml' | |
| - 'ci/linux-mainline/**' | |
| - 'patches/v2.0/**' | |
| - 'scripts/**' | |
| workflow_dispatch: | |
| schedule: | |
| # Meaningless hh:mm field to avoid peak control traffic on GitHub | |
| - cron: '44 22 * * *' | |
| # Allow at most one run from any workflow in this repo at the same time, as most | |
| # of them will operate on some shared directories of self-hosted runners and | |
| # interfere with each other. Without this setting, the below could happen: | |
| # | |
| # T1 T2 T3 T4 | |
| # runner1 -(R1J1--------------------R1J2)- | |
| # ---------(R2J1----R2J2)--------- | |
| # | |
| # Now: | |
| # | |
| # T1 T2 T3 T4 T5 T6 | |
| # runner1 -(R1J1----R1J2)--xxxxxxxxxxxxxx--xxxxxxxxxxxxxx- | |
| # -xxxxxxxxxxxxxx--(R2J1----R2J2)--xxxxxxxxxxxxxx- | |
| # runner2 -xxxxxxxxxxxxxx--xxxxxxxxxxxxxx--(R3J1----R3J2)- | |
| # | |
| # Ideally we want a single runner to finish all jobs from a workflow before | |
| # accepting any other job. But I don't know how. | |
| # | |
| # T1 T2 T3 T4 T5 T6 | |
| # runner1 -(R1J1----R1J2)--xxxxxxxxxxxxxx----------------- | |
| # -xxxxxxxxxxxxxx--(R3J1----R3J2)----------------- | |
| # runner2 ---------(R2J1----R2J2)--xxxxxxxxxxxxxx--------- | |
| # ---------xxxxxxxxxxxxxx--(R4J1----R4J2)--------- | |
| # | |
| # Or maybe we should redesign the abstraction: what ought to be workflows? what | |
| # ought to be jobs? and what ought to be steps? | |
| concurrency: | |
| group: ${{ github.repository }} | |
| env: | |
| MCDC_HOME: /home/github-runner/mcdc-workdir | |
| jobs: | |
| find_runner: | |
| name: Find an available self-hosted runner | |
| runs-on: self-hosted | |
| # Enforce this same runner for all later jobs that depend on this one | |
| # FIXME this requires each runner has a label the same as its name | |
| outputs: | |
| runner_name: ${{ runner.name }} | |
| # Dummy, do nothing | |
| steps: | |
| - uses: actions/checkout@v4 | |
| install_deps: | |
| name: 1. Install dependencies | |
| needs: find_runner | |
| # Enforce the same runner | |
| runs-on: ${{ needs.find_runner.outputs.runner_name }} | |
| outputs: | |
| runner_name: ${{ runner.name }} | |
| steps: | |
| - uses: actions/checkout@v4 | |
| - name: Install dependencies | |
| run: ./ci/linux-mainline/1_install_deps.sh | |
| pull_source: | |
| name: 2. Pull the source code and apply patches | |
| needs: install_deps | |
| # Enforce the same runner | |
| runs-on: ${{ needs.install_deps.outputs.runner_name }} | |
| outputs: | |
| runner_name: ${{ runner.name }} | |
| steps: | |
| - uses: actions/checkout@v4 | |
| - name: Create a workspace from clean slate | |
| run: | | |
| rm -rf $MCDC_HOME | |
| mkdir -p $MCDC_HOME | |
| - name: Pull the source code and apply patches | |
| run: ./ci/linux-mainline/2_pull_source.sh ${{ github.repository }} ${{ github.ref_name }} | |
| get_llvm: | |
| name: 3. Get LLVM | |
| needs: pull_source | |
| # Enforce the same runner | |
| runs-on: ${{ needs.pull_source.outputs.runner_name }} | |
| outputs: | |
| runner_name: ${{ runner.name }} | |
| steps: | |
| - uses: actions/checkout@v4 | |
| - name: Build from source | |
| run: ./ci/linux-mainline/3_get_llvm.sh | |
| - name: Print LLVM build resource usage | |
| run: | | |
| cat /tmp/time.log | |
| du -sh $MCDC_HOME/llvm-project | |
| build_kernel: | |
| name: 4. Build the kernel | |
| needs: get_llvm | |
| # Enforce the same runner | |
| runs-on: ${{ needs.get_llvm.outputs.runner_name }} | |
| outputs: | |
| runner_name: ${{ runner.name }} | |
| steps: | |
| - uses: actions/checkout@v4 | |
| - name: Set up LLVM path | |
| run: echo "$MCDC_HOME/llvm-project/build/bin" >> $GITHUB_PATH | |
| - name: Print toolchain version | |
| run: | | |
| clang -v | |
| llc --version | |
| - name: Build the kernel | |
| run: ./ci/linux-mainline/4_build_kernel.sh | |
| - name: Print full kernel build log | |
| run: cat /tmp/make.log | |
| - name: Print kernel build resource usage | |
| run: | | |
| cat /tmp/time.log | |
| du -sh $MCDC_HOME/linux | |
| - name: Print kernel binary layout | |
| run: | | |
| llvm-readelf --sections -W $MCDC_HOME/linux/vmlinux | |
| boot_kernel_and_collect_coverage: | |
| name: 5. Boot the kernel and collect coverage | |
| needs: build_kernel | |
| # Enforce the same runner | |
| runs-on: ${{ needs.build_kernel.outputs.runner_name }} | |
| outputs: | |
| runner_name: ${{ runner.name }} | |
| steps: | |
| - uses: actions/checkout@v4 | |
| - name: Set up LLVM path | |
| run: echo "$MCDC_HOME/llvm-project/build/bin" >> $GITHUB_PATH | |
| - name: Print toolchain version | |
| run: | | |
| clang -v | |
| llc --version | |
| - name: Boot the kernel and collect coverage | |
| run: ./ci/linux-mainline/5_boot_kernel_and_collect_coverage.sh | |
| - name: Print the index of coverage report (immediately after reset) | |
| run: cat $MCDC_HOME/analysis_reset/text-coverage-reports/index.txt | |
| - name: Print the index of coverage report | |
| run: cat $MCDC_HOME/analysis/text-coverage-reports/index.txt |