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ai-code-review-rc: skip unsampled PRs before starting CodeBuild #543

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Merged
theihor merged 1 commit into from
Oct 8, 2026
Merged

ai-code-review-rc: skip unsampled PRs before starting CodeBuild #543

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26 changes: 11 additions & 15 deletions .github/workflows/ai-code-review-rc.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -17,13 +17,20 @@ on:
env:
# The experiment: the bpf-ai-review ref to review with.
AI_REVIEW_WRAPPER_REF: shadow/subsystem-build
# Review one in N KPD series.
AI_REVIEW_SAMPLE_EVERY: 4

jobs:
get-commits-rc:
# This codition is an indicator that we are running in a context of PR owned by kernel-patches org
if: ${{ github.repository == 'kernel-patches/bpf-rc' && vars.AWS_REGION }}
# Sample about one in four KPD PRs by head SHA (first hex digit 0-3).
# Test PRs against ai-review-base always run. Decide before allocating
# a CodeBuild runner so that unsampled PRs skip the entire workflow.
if: >-
github.repository == 'kernel-patches/bpf-rc' && vars.AWS_REGION &&
(github.base_ref == 'ai-review-base' ||
(startsWith(github.head_ref, 'series/') &&
(startsWith(github.event.pull_request.head.sha, '0') ||
startsWith(github.event.pull_request.head.sha, '1') ||
startsWith(github.event.pull_request.head.sha, '2') ||
startsWith(github.event.pull_request.head.sha, '3'))))
runs-on:
- ${{ format('codebuild-bpf-ci-{0}-{1}', github.run_id, github.run_attempt) }}
- image:custom-linux-ghcr.io/kernel-patches/runner:kbuilder-debian-x86_64
Expand All @@ -49,17 +56,6 @@ jobs:
- name: Get PR commits
id: get-commits
run: |
# Review one in AI_REVIEW_SAMPLE_EVERY KPD series, by patchwork series
# ID. Test PRs against ai-review-base always run.
if [ "$GITHUB_BASE_REF" != ai-review-base ]; then
if ! [[ $GITHUB_HEAD_REF =~ ^series/([0-9]+)= ]] ||
(( BASH_REMATCH[1] % AI_REVIEW_SAMPLE_EVERY )); then
echo "::notice::$GITHUB_HEAD_REF is not sampled (1 in ${AI_REVIEW_SAMPLE_EVERY} series)"
echo "commits=[]" >> "$GITHUB_OUTPUT"
echo "has-commits=false" >> "$GITHUB_OUTPUT"
exit 0
fi
fi
cd .kernel
if [ "$(git log -1 --format=%s ${{ github.event.pull_request.head.sha }})" = "Dummy commit" ]; then
echo "::notice::KPD Dummy commit, the series did not apply: skipping AI review"
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