find-sched-commits.sh

#/bin/bash
set -eu

# In a kernel repo, this finds all the tip:sched commits Linus has merged,
# with a header for each of the merge commits that merged them.
# Got it?

# This helper takes a merge commit, then finds the point at which the merged
# branches diverged, and gives you all the commits between that point and the
# second parent of the merge commit. What? OK..
#
#   M
#   |\
#   X A
#   | |
#   Y B
#   |/
#   Z
#
# find_merged_commits M will print A and B.
find_merged_commits() {
    merge=$1  # This is M

    first_parent=$(git rev-parse $merge^1)  # This is X
    second_parent=$(git rev-parse $merge^2) # This is A

    merge_base=$(git merge-base $first_parent $second_parent) # This is Z

    git --no-pager log --format=format:"  %h %s <%aN>" $merge_base..$second_parent # This prints A and B
}

# For each merge commit authored by Torvalds with "sched.*tip" in the message
git log --author "Linus Torvalds" --merges --grep "sched.*tip" --format=format:%H | while read merge; do
    echo
    echo ====================================================
    git log -1 --date=short --format=format:"%h %cd %s" $merge
    echo
    echo
    find_merged_commits $merge
    echo
done