Add PR creation step

Signed-off-by: Shreeya Patel <[email protected]>

Author: shreeya-patel98

.github/workflows/kernel-build-and-test-x86_64.yml

@@ -262,3 +262,133 @@ jobs:
         else
           echo "::warning::No previous successful test results found for branch ${{ github.ref_name }}, skipping comparison"
         fi
+
+  create-pr:
+    name: Create Pull Request
+    runs-on: kernel-build
+    needs: [build, boot, test-kselftest, compare-results]
+    if: success()
+
+    steps:
+    - name: Checkout kernel source
+      uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+        token: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Download kernel compilation logs
+      uses: actions/download-artifact@v4
+      with:
+        name: kernel-compilation-logs-x86_64
+        path: artifacts/build
+
+    - name: Download boot logs
+      uses: actions/download-artifact@v4
+      with:
+        name: boot-logs-x86_64
+        path: artifacts/boot
+
+    - name: Download kselftest logs
+      uses: actions/download-artifact@v4
+      with:
+        name: kselftest-logs-x86_64
+        path: artifacts/test
+
+    - name: Extract test statistics
+      id: stats
+      run: |
+        PASSED=$(grep -a '^ok' artifacts/test/kselftests-*.log | wc -l || echo "0")
+        FAILED=$(grep -a '^not ok' artifacts/test/kselftests-*.log | wc -l || echo "0")
+        echo "passed=$PASSED" >> $GITHUB_OUTPUT
+        echo "failed=$FAILED" >> $GITHUB_OUTPUT
+
+    - name: Extract build timers
+      id: build_info
+      run: |
+        BUILD_TIME=$(grep -oP '\[TIMER\]\{BUILD\}:\s*\K[0-9]+' artifacts/build/kernel-build.log | head -1 || echo "N/A")
+        TOTAL_TIME=$(grep -oP '\[TIMER\]\{TOTAL\}\s*\K[0-9]+' artifacts/build/kernel-build.log | head -1 || echo "N/A")
+        echo "build_time=${BUILD_TIME}s" >> $GITHUB_OUTPUT
+        echo "total_time=${TOTAL_TIME}s" >> $GITHUB_OUTPUT
+
+    - name: Get commit information
+      id: commit_msg
+      run: |
+        # Count commits since origin/main (or appropriate base branch)
+        BASE_BRANCH="main"
+        if ! git rev-parse origin/$BASE_BRANCH >/dev/null 2>&1; then
+          # Try other common base branch names
+          for branch in master lts-9.2 lts-9; do
+            if git rev-parse origin/$branch >/dev/null 2>&1; then
+              BASE_BRANCH=$branch
+              break
+            fi
+          done
+        fi
+
+        COMMIT_COUNT=$(git rev-list --count origin/$BASE_BRANCH..HEAD 2>/dev/null || echo "1")
+
+        if [ "$COMMIT_COUNT" -eq "1" ]; then
+          # Single commit: use commit subject
+          COMMIT_SUBJECT=$(git log -1 --pretty=%s)
+          echo "commit_subject=$COMMIT_SUBJECT" >> $GITHUB_OUTPUT
+
+          COMMIT_MSG=$(git log -1 --pretty=%B)
+          echo "commit_message<<EOF" >> $GITHUB_OUTPUT
+          echo "$COMMIT_MSG" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+        else
+          # Multiple commits: create summary
+          echo "commit_subject=Multiple patches tested ($COMMIT_COUNT commits)" >> $GITHUB_OUTPUT
+
+          # Get all commit messages
+          ALL_COMMITS=$(git log origin/$BASE_BRANCH..HEAD --pretty=format:"### %s%n%n%b%n---")
+          echo "commit_message<<EOF" >> $GITHUB_OUTPUT
+          echo "$ALL_COMMITS" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+        fi
+
+    - name: Create Pull Request
+      uses: peter-evans/create-pull-request@v6
+      with:
+        token: ${{ secrets.GITHUB_TOKEN }}
+        commit-message: "Automated PR: All tests passed"
+        title: "[${{ github.ref_name }}] ${{ steps.commit_msg.outputs.commit_subject }}"
+        body: |
+          ## Summary
+          This PR has been automatically created after successful completion of all CI stages.
+
+          ## Commit Message
+          ```
+          ${{ steps.commit_msg.outputs.commit_message }}
+          ```
+
+          ## Test Results
+
+          ### ✅ Build Stage
+          - Status: Passed
+          - Build Time: ${{ steps.build_info.outputs.build_time }}
+          - Total Time: ${{ steps.build_info.outputs.total_time }}
+          - [View build logs](https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }})
+
+          ### ✅ Boot Verification
+          - Status: Passed
+          - [View boot logs](https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }})
+
+          ### ✅ Kernel Selftests
+          - **Passed:** ${{ steps.stats.outputs.passed }}
+          - **Failed:** ${{ steps.stats.outputs.failed }}
+          - [View kselftest logs](https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }})
+
+          ### ✅ Test Comparison
+          - Comparison against previous run: Within acceptable threshold (±3 tests)
+          - Branch: ${{ github.ref_name }}
+
+          ---
+          🤖 This PR was automatically generated by GitHub Actions
+          Run ID: ${{ github.run_id }}
+        branch: pr/${{ github.ref_name }}-tested
+        delete-branch: true
+        labels: |
+          automated
+          tested
+          ready-for-review