common: introduce the PMEM Benchmark workflow

Signed-off-by: Jan Michalski <jan.michalski@intel.com>

.github/actions/pmem_benchmark_run/action.yml

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+name: PMEM benchmark procedure
+description: PMDK benchmarking procedure for self-hosted runners equipped with PMEM
+inputs:
+  runtime_dir:
+    description: The root directory of the repository designated as runtime
+    required: true
+  reference:
+    description: LD_LIBRARY_PATH where the first version of PMDK is built
+    required: true
+  rival:
+    description: LD_LIBRARY_PATH where the second version of PMDK is built
+    required: true
+  config:
+    description: Name of the .cfg file to use
+    required: true
+  scenario:
+    description: Name of the scenario to run
+    required: true
+  pmem_path:
+    description: A PMEM-mounted directory to use
+    default: /mnt/pmem0
+runs:
+  using: composite
+  steps:
+    - name: Identify the NUMA node local to PMEM
+      id: numa
+      shell: bash
+      run: |
+        DEV=$(mount | grep ${{ inputs.pmem_path }} | cut -d' ' -f1 | cut -d'/' -f 3)
+        NUMA=$(ndctl list -v | jq ".[] | select(.blockdev==\"$DEV\" and .mode==\"fsdax\") | .numa_node")
+        echo "node=$NUMA" >> $GITHUB_OUTPUT
+
+    - name: Run the benchmark
+      working-directory: ${{ inputs.runtime_dir }}
+      shell: bash
+      run: >-
+        ./utils/benchmarks/run_and_combine.py
+        --reference ${{ inputs.reference }} --rival ${{ inputs.rival }}
+        --config ${{ inputs.config }} --scenario ${{ inputs.scenario }}
+        --pmem_path ${{ inputs.pmem_path }} --numa_node ${{ steps.numa.outputs.node }}
+
+    - name: Archive logs
+      if: always()
+      uses: actions/upload-artifact@v4
+      with:
+        name: ${{ inputs.config }}__${{ inputs.scenario }}
+        path: '${{ inputs.runtime_dir }}/*.csv'
+
+    - name: Remove logs
+      if: always()
+      working-directory: ${{ inputs.runtime_dir }}
+      shell: bash
+      run: rm -f *.csv

.github/workflows/pmem_benchmark.yml

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+name: PMEM Benchmark
+
+on:
+  workflow_dispatch:
+    inputs:
+      reference_ref:
+        type: string
+        default: master
+      rival_ref:
+        type: string
+        default: stable-2.0
+  push: # XXX
+
+# XXX missing in Ansible files
+# sudo dnf install numactl python3-pip -y
+# pip install --user pandas
+
+jobs:
+  prep:
+    name: Prepare ${{ matrix.ROLE }}
+    runs-on: [self-hosted, benchmark]
+    strategy:
+      matrix:
+        include:
+          - ROLE: reference
+            REF: master # XXX ${{ inputs.reference_ref }}
+          - ROLE: rival
+            REF: stable-2.0 # XXX ${{ inputs.rival_ref }}
+          - ROLE: runtime
+            REF: ''
+    permissions:
+      contents: read
+    steps:
+      - name: Clone the git repo (libraries)
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ matrix.REF }}
+          fetch-depth: 1
+          path: ${{ matrix.ROLE }}
+
+      - name: Build libraries
+        working-directory: ${{ matrix.ROLE }}
+        run: make -j
+
+
+  run:
+    name: Run perf.cfg ${{ matrix.SCENARIO }}
+    runs-on: [self-hosted, benchmark]
+    needs: prep
+    strategy:
+      matrix:
+        SCENARIO:
+          - obj_tx_alloc_small_v_thread
+          - obj_pmalloc_small_v_threads
+          - obj_rbtree_map_insert
+          - obj_hashmap_tx_map_insert
+    steps:
+      - name: Benchmark
+        uses: ./runtime/.github/actions/pmem_benchmark_run
+        with:
+          runtime_dir: ./runtime/
+          reference: ../reference/src/nondebug
+          rival: ../rival/src/nondebug
+          config: perf
+          scenario: ${{ matrix.SCENARIO }}
+
+
+  repack:
+    name: Repack
+    runs-on: ubuntu-latest
+    needs: run
+    steps:
+      - name: Download all artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: csvs
+
+      - name: Upload all as a single artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: perf__all
+          path: csvs/**/*