powerpc-sparse.yml

name: powerpc/sparse

# Controls when the action will run.
on:
  # This allows the build to be triggered manually via the github UI.
  workflow_dispatch:

  push:
    # This triggers the build on a push to any branch named ci/powerpc/<something>
    branches:
    - '**'
    # As long as one of these paths matches
    paths:
      - '!tools/**'		   	# ignore tools
      - '!samples/**'		   	# ignore samples
      - '!Documentation/**'		# ignore Documentation
      - '!arch/**'			# ignore arch changes
      - 'arch/powerpc/**'		# but not arch/powerpc
      - 'arch/Kconfig'			# or common bits in arch
      - '**'				# anything else triggers a build

jobs:
  sparse:
    runs-on: ubuntu-latest

    strategy:
      matrix:
        defconfig: [ppc64, pmac32, mpc885_ads_defconfig]
        image: [fedora-38]
        subarch: [ppc64]
        include:
          - subarch: ppc64le
            defconfig: ppc64le
            image: fedora-38

    env:
      ARCH: powerpc
      TARGET: kernel
      CCACHE: 1
      SPARSE: 2
      SUBARCH: ${{ matrix.subarch }}
      IMAGE: ${{ matrix.image }}
      DEFCONFIG: ${{ matrix.defconfig }}

    steps:
    - name: Checkout
      uses: actions/checkout@v3

    # NB this is before the build on merge, so all errors are detected
    # On other branches we ignore these and only report sparse diff results below
    - name: Register problem matchers
      if: github.ref_name == 'merge'
      run: |
        echo "::add-matcher::.github/problem-matchers/compiler-source.json"
        echo "::add-matcher::.github/problem-matchers/compiler-non-source.json"

    - name: Load ccache
      uses: actions/cache@v3
      with:
        path: ~/.ccache
        key: ${{ matrix.image }}-${{ matrix.subarch }}-${{ matrix.defconfig }}

    - name: Login to GitHub Container Registry
      uses: docker/login-action@v2
      with:
        registry: ghcr.io
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}

    - name: Build
      run: |
        mkdir -p ~/.ccache
        ./arch/powerpc/tools/ci-build.sh

    - name: Get sparse results from base tree
      if: github.ref_name != 'merge'
      continue-on-error: true
      uses: dawidd6/action-download-artifact@v2
      with:
        workflow: powerpc-sparse.yml
        workflow_conclusion: success
        branch: merge # Requires the merge branch to be built once before this will work
        name: sparse-${{ matrix.defconfig }}-${{ matrix.image }}.log

    # NB this is after the build on non-merge, so only errors from the sparse diff are detected
    - name: Register problem matcher
      if: github.ref_name != 'merge'
      run: |
        echo "::add-matcher::.github/problem-matchers/sparse.json"

    - name: Compare sparse results with base
      if: github.ref_name != 'merge'
      run: |
        bash -c 'if [ ! -f sparse.log ]; then cp ~/output/sparse.log .; fi'
        ./arch/powerpc/tools/smart-sparse-diff.py sparse.log ~/output/sparse.log | tee -a ~/output/sparse-diff.log

    - name: Archive artifacts
      uses: actions/upload-artifact@v3
      with:
        name: sparse-${{ matrix.defconfig }}-${{ matrix.image }}.log
        path: |
          ~/output/sparse.log
          ~/output/sparse-diff.log