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sync: add manual cherry-picking mode

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This is sometimes necessary when we did ad-hoc urgent bug fixes, which
are not identical to the ones in kernel.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
This commit is contained in:
Andrii Nakryiko
2019-08-08 16:56:57 -07:00
committed by Andrii Nakryiko
parent 00ad180d07
commit 6227c6f8dd
1 changed files with 15 additions and 7 deletions
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22
scripts/sync-kernel.sh
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@@ -3,7 +3,8 @@
usage () {
echo "USAGE: ./sync-kernel.sh <kernel-repo> <libbpf-repo> [<baseline-commit>]"
echo ""
echo "If <baseline-commit> is not specified, it's read from <libbpf-repo>/CHECKPOINT-COMMIT"
echo "If <baseline-commit> is not specified, it's read from <libbpf-repo>/CHECKPOINT-COMMIT."
echo "Set MANUAL_MODE envvar to 1 to manually control every cherry-picked commita."
exit 1
}
@@ -95,12 +96,14 @@ validate_merges()
# $2 - tip_tag
cherry_pick_commits()
{
local manual_mode=${MANUAL_MODE:-0}
local baseline_tag=$1
local tip_tag=$2
local new_commits
local signature
local should_skip
local synced_cnt
local manual_check
local desc
new_commits=$(git rev-list --no-merges --topo-order --reverse ${baseline_tag}..${tip_tag} ${LIBBPF_PATHS[@]})
@@ -108,18 +111,24 @@ cherry_pick_commits()
desc="$(commit_desc ${new_commit})"
signature="$(commit_signature ${new_commit})"
synced_cnt=$(grep -F "${signature}" ${TMP_DIR}/libbpf_commits.txt | wc -l)
manual_check=0
if ((${synced_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 '${desc}' is synced into libbpf as:"
grep -F "${signature}" ${TMP_DIR}/libbpf_commits.txt | \
cut -d'|' -f1 | sed -e 's/^/- /'
if ((${synced_cnt} == 1)); then
if ((${manual_mode} != 1 && ${synced_cnt} == 1)); then
echo "Skipping '${desc}' due to unique match..."
continue
fi
echo "'${desc} matches multiple commits, please, double-check!"
read -p "Do you want to skip it? [y/N]: " should_skip
if ((${synced_cnt} > 1)); then
echo "'${desc} matches multiple commits, please, double-check!"
manual_check=1
fi
fi
if ((${manual_mode} == 1 || ${manual_check} == 1)); then
read -p "Do you want to skip '${desc}'? [y/N]: " should_skip
case "${should_skip}" in
"y" | "Y")
echo "Skipping '${desc}'..."
@@ -129,9 +138,8 @@ cherry_pick_commits()
fi
# commit hasn't been synced into libbpf yet
echo "Picking '${desc}'..."
if ! git cherry-pick ${new_commit}; then
read -p "Cherry-picking '${desc}' failed, \
please fix manually and press <return> to proceed..."
if ! git cherry-pick ${new_commit} &>/dev/null; then
read -p "Error! Cherry-picking '${desc}' failed, please fix manually and press <return> to proceed..."
fi
done
}