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sync: improve and automate already synced patches detection

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Make detection more precise and automate skip/sync decision, if
everything looks sane.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
This commit is contained in:
Andrii Nakryiko
2019-08-08 15:39:11 -07:00
committed by Andrii Nakryiko
parent 11052fc1be
commit 715a58d593
1 changed files with 30 additions and 7 deletions
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37
scripts/sync-kernel.sh
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@@ -56,14 +56,30 @@ commit_desc()
git log -n1 --pretty='%h ("%s")' $1
}
# Create commit single-line signature, which consists of:
# - full commit hash
# - author date in ISO8601 format
# - full commit body with newlines replaced with vertical bars (|)
# - shortstat appended at the end
# The idea is that this single-line signature is good enough to make final
# decision about whether two commits are the same, across different repos.
# $1 - commit ref
commit_signature()
{
git log -n1 --pretty='("%s")|%aI|%b' --shortstat $1 | tr '\n' '|'
}
TMP_DIR=$(mktemp -d)
cd_to ${LIBBPF_REPO}
SUFFIX=$(date --utc +%Y-%m-%dT%H-%M-%S.%3NZ)
BASELINE_COMMIT=${3-$(cat CHECKPOINT-COMMIT)}
echo "Dumping existing libbpf commit signatures..."
git log --oneline -n500 > ${TMP_DIR}/libbpf_commits.txt
for h in $(git log --pretty='%h' -n500); do
echo $h "$(commit_signature $h)" >> ${TMP_DIR}/libbpf_commits.txt
done
# Use current kernel repo HEAD as a source of patches
cd_to ${LINUX_REPO}
@@ -118,12 +134,19 @@ LIBBPF_NEW_COMMITS=$(git rev-list --no-merges --topo-order --reverse ${BASELINE_
for LIBBPF_NEW_COMMIT in ${LIBBPF_NEW_COMMITS}; do
COMMIT_DESC="$(commit_desc ${LIBBPF_NEW_COMMIT})"
echo "Checking '${COMMIT_DESC}'..."
SYNCED_COMMITS=$(grep -F "$(git log -n1 --pretty=format:%s ${LIBBPF_NEW_COMMIT})" ${TMP_DIR}/libbpf_commits.txt || echo "")
if [ -n "${SYNCED_COMMITS}" ]; then
# commit with the same subject is already in libbpf, but it's not 100% the same commit, so check with user
echo "Commit '$(git log -n1 --oneline ${LIBBPF_NEW_COMMIT})' appears to be already synced into libbpf..."
echo "Corresponding libbpf commit(s):"
echo "${SYNCED_COMMITS}"
SYNCED_COMMIT_CNT=$(grep -F "$(commit_signature ${LIBBPF_NEW_COMMIT})" ${TMP_DIR}/libbpf_commits.txt | wc -l)
if ((${SYNCED_COMMIT_CNT} > 0)); then
# commit with the same subject is already in libbpf, but it's
# not 100% the same commit, so check with user
echo "Commit '${COMMIT_DESC}' is synced into libbpf as:"
grep -F "$(commit_signature ${LIBBPF_NEW_COMMIT})" \
${TMP_DIR}/libbpf_commits.txt | \
cut -d'|' -f1 | sed -e 's/^/- /'
if ((${SYNCED_COMMIT_CNT} == 1)); then
echo "Skipping '${COMMIT_DESC}' due to unique match..."
continue
fi
echo "'${COMMIT_DESC} matches multiple commits, please, double-check!"
read -p "Do you want to skip it? [y/N]: " SHOULD_SKIP
case "${SHOULD_SKIP}" in
"y" | "Y")