build: Add kernel statistics to PR description

.github/workflows/build.yml

@@ -38,6 +38,16 @@ jobs:
           path: build/boot.img
           if-no-files-found: error
 
+      - name: upload kernel profile
+        uses: actions/upload-artifact@v4
+        with:
+          name: kernel-profile
+          path: |
+            build/kernel-profile.json
+            build/kernel-objects.json
+            build/kernel-profile.md
+          if-no-files-found: error
+
   build-system:
     runs-on: ubuntu-24.04-arm
     steps:

.github/workflows/profile.yml

@@ -29,6 +29,16 @@ jobs:
           wait-interval: 20
           checks-discovery-timeout: 300
 
+      - name: wait for kernel build
+        uses: lewagon/wait-on-check-action@v1.6.0
+        with:
+          ref: ${{ env.SHA }}
+          check-name: build-kernel
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          allowed-conclusions: success
+          wait-interval: 20
+          checks-discovery-timeout: 300
+
       - name: get build run ID
         id: get_run_id
         env:
@@ -47,6 +57,14 @@ jobs:
           name: rootfs-profile
           path: build/
 
+      - name: download kernel profile
+        uses: dawidd6/action-download-artifact@v6
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          run_id: ${{ steps.get_run_id.outputs.run_id }}
+          name: kernel-profile
+          path: build/
+
       - name: download master baseline
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -56,25 +74,41 @@ jobs:
             --status=success --limit=1 --json databaseId --jq '.[0].databaseId')
           if [ -n "$RUN_ID" ]; then
             gh run download "$RUN_ID" --name rootfs-profile --dir baseline/ || true
+            gh run download "$RUN_ID" --name kernel-profile --dir baseline/ || true
           fi
 
       - name: post PR comment
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
-          DIFF_MD=$(./vamos profile diff baseline/rootfs-profile.json build/rootfs-profile.json 2>/dev/null || echo "No baseline available")
-          PROFILE_MD=$(cat build/rootfs-profile.md)
+          ROOTFS_DIFF_MD=$(./vamos profile diff baseline/rootfs-profile.json build/rootfs-profile.json 2>/dev/null || echo "No baseline available")
+          ROOTFS_PROFILE_MD=$(cat build/rootfs-profile.md)
+          KERNEL_DIFF_MD=$(./vamos profile kernel diff baseline/kernel-profile.json build/kernel-profile.json 2>/dev/null || echo "No baseline available")
+          KERNEL_PROFILE_MD=$(cat build/kernel-profile.md)
 
-          printf -v COMMENT_BODY '%s\n%s\n\n%s\n%s\n\n---\n\n%s' \
-            '<!-- rootfs-profile-bot -->' \
-            '## vamOS System Profile' \
-            '### Changes vs master' \
-            "$DIFF_MD" \
-            "$PROFILE_MD"
+          COMMENT_BODY=$(printf '%s\n' \
+            '<!-- vamos-profile-bot -->' \
+            '## vamOS Profiles' \
+            '' \
+            '### System Changes vs master' \
+            "$ROOTFS_DIFF_MD" \
+            '' \
+            '### Kernel Changes vs master' \
+            "$KERNEL_DIFF_MD" \
+            '' \
+            '---' \
+            '' \
+            '## System Profile Details' \
+            "$ROOTFS_PROFILE_MD" \
+            '' \
+            '---' \
+            '' \
+            '## Kernel Profile Details' \
+            "$KERNEL_PROFILE_MD")
 
           COMMENT_ID=$(gh api \
             "repos/${{ github.repository }}/issues/${{ github.event.pull_request.number }}/comments" \
-            --jq '.[] | select(.body | contains("<!-- rootfs-profile-bot -->")) | .id' \
+            --jq '.[] | select(.body | contains("<!-- vamos-profile-bot -->")) | .id' \
             | head -1)
 
           if [ -n "$COMMENT_ID" ]; then

tools/build/Dockerfile.builder

@@ -17,6 +17,7 @@ RUN apk add --no-cache \
     findutils \
     flex \
     git \
+    jq \
     libcap \
     linux-headers \
     lz4-dev \

tools/build/build_kernel.sh

@@ -209,6 +209,10 @@ build_kernel() {
   rm -f $BOOT_IMG.nonsecure $BOOT_IMG.sha256 $BOOT_IMG.sig $BOOT_IMG.sig.padded
 
   mv $BOOT_IMG "$OUT_DIR/"
+
+  echo "-- Collecting kernel profile --"
+  bash "$DIR/tools/profile/kernel.sh"
+
   echo "-- Done! boot.img: $OUT_DIR/boot.img --"
   ls -lh "$OUT_DIR/boot.img"
 }