kernel-test.yml

name: Reusable test workflow

on:
  workflow_call:
    inputs:
      arch:
        required: true
        type: string
        description: The architecture to build against, e.g x86_64, aarch64, s390x...
      toolchain_full:
        required: true
        type: string
        description: The toolchain and for llvm, its version, e.g gcc, llvm-15
      runs_on:
        required: true
        type: string
        description: The runners to run the test on. This is a json string representing an array of labels.
      kernel:
        required: true
        type: string
        description: The kernel to run the test against. For KPD this is always LATEST, which runs against a newly built kernel.
      test:
        required: true
        type: string
        description: The test to run in the vm, e.g test_progs, test_maps, test_progs_no_alu32...
      continue_on_error:
        required: true
        type: string
        description: Whether to continue on error. This is typically set to true for parallel tests which are currently known to fail, but we don't want to fail the whole CI because of that.
      timeout_minutes:
        required: true
        type: number
        description: In case a test runs for too long, after how many seconds shall we timeout and error.

jobs:
  test:
    name: ${{ inputs.test }} on ${{ inputs.arch }} with ${{ inputs.toolchain_full }}
    runs-on: ${{ fromJSON(inputs.runs_on) }}
    timeout-minutes: 100
    env:
      ARCH: ${{ inputs.arch }}
      KERNEL: ${{ inputs.kernel }}
      REPO_ROOT: ${{ github.workspace }}
      REPO_PATH: ""
      # https://github.com/actions/runner/issues/1483#issuecomment-1031671517
      # booleans are weird in GH.
      CONTINUE_ON_ERROR: ${{ inputs.continue_on_error }}
      DEPLOYMENT: ${{ github.repository == 'kernel-patches/bpf' && 'prod' || 'rc' }}
      ALLOWLIST_FILE: /tmp/allowlist
      DENYLIST_FILE: /tmp/denylist
    steps:
      - uses: actions/checkout@v4
        with:
          sparse-checkout: |
            .github
            ci

      - uses: actions/download-artifact@v4
        with:
          name: vmlinux-${{ inputs.arch }}-${{ inputs.toolchain_full }}
          path: .

      - name: Untar artifacts
        # zstd is installed by default in the runner images.
        run: zstd -d -T0  vmlinux-${{ inputs.arch }}-${{ inputs.toolchain_full }}.tar.zst --stdout | tar -xf -

      - name: Prepare ALLOW/DENYLIST
        env:
          SELFTESTS_BPF: ${{ github.workspace }}/selftests/bpf
          VMTEST_CONFIGS: ${{ github.workspace }}/ci/vmtest/configs
        run: |
          cat "${SELFTESTS_BPF}/ALLOWLIST"          \
              "${SELFTESTS_BPF}/ALLOWLIST.${ARCH}"  \
              "${VMTEST_CONFIGS}/ALLOWLIST"         \
              "${VMTEST_CONFIGS}/ALLOWLIST.${ARCH}" \
            2> /dev/null > "${ALLOWLIST_FILE}" || true

          cat "${SELFTESTS_BPF}/DENYLIST" \
              "${SELFTESTS_BPF}/DENYLIST.${ARCH}" \
              "${VMTEST_CONFIGS}/DENYLIST" \
              "${VMTEST_CONFIGS}/DENYLIST.${ARCH}" \
              "${VMTEST_CONFIGS}/DENYLIST.${DEPLOYMENT}" \
            2> /dev/null > "${DENYLIST_FILE}" || true

      - name: Run selftests
        uses: libbpf/ci/run-vmtest@v2
        # https://github.com/actions/runner/issues/1483#issuecomment-1031671517
        # booleans are weird in GH.
        continue-on-error: ${{ fromJSON(env.CONTINUE_ON_ERROR) }}
        timeout-minutes: ${{ inputs.timeout_minutes }}
        env:
          TEST_PROGS_WATCHDOG_TIMEOUT: 300
        with:
          arch: ${{ inputs.arch }}
          vmlinuz: '${{ github.workspace }}/vmlinuz'
          kernel-root: ${{ env.REPO_ROOT }}
          max-cpu: 8
          kernel-test: ${{ inputs.test }}
          # Here we must use kbuild-output local to the repo, because
          # it was extracted from the artifacts.
          kbuild-output: ${{ env.REPO_ROOT }}/kbuild-output