# git rev-parse -q --verify 884a7fa1b090ccab785f9fa2a9168238d473d801^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/mirror/linux-kbuild.git for-next
warning: The last gc run reported the following. Please correct the root cause
and remove .git/gc.log.
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to remove them.

# git rev-parse -q --verify 884a7fa1b090ccab785f9fa2a9168238d473d801^{commit}
884a7fa1b090ccab785f9fa2a9168238d473d801
# git checkout -q -f -B kisskb 884a7fa1b090ccab785f9fa2a9168238d473d801
# git clean -qxdf
# < git log -1
# commit 884a7fa1b090ccab785f9fa2a9168238d473d801
# Author: Masahiro Yamada <masahiroy@kernel.org>
# Date:   Sun Mar 14 15:15:50 2021 +0900
# 
#     kbuild: replace sed with $(subst ) or $(patsubst )
#     
#     For simple text replacement, it is better to use a built-in function
#     instead of sed if possible. You can save one process forking.
#     
#     I do not mean to replace all sed invocations because GNU Make itself
#     does not support regular expression (unless you use guile).
#     
#     I just replaced simple ones.
#     
#     Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/s390-linux/bin/s390-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/s390-linux/bin/s390-linux-ld --version
# < git log --format=%s --max-count=1 884a7fa1b090ccab785f9fa2a9168238d473d801
# < make -s -j 120 ARCH=s390 O=/kisskb/build/kbuild_s390-defconfig_s390x-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/s390-linux/bin/s390-linux-  defconfig
# < make -s -j 120 ARCH=s390 O=/kisskb/build/kbuild_s390-defconfig_s390x-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/s390-linux/bin/s390-linux-  help
# make -s -j 120 ARCH=s390 O=/kisskb/build/kbuild_s390-defconfig_s390x-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/s390-linux/bin/s390-linux-  olddefconfig
# make -s -j 120 ARCH=s390 O=/kisskb/build/kbuild_s390-defconfig_s390x-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/s390-linux/bin/s390-linux-  
/kisskb/src/fs/btrfs/tree-checker.c: In function 'check_root_item':
/kisskb/src/fs/btrfs/tree-checker.c:1071:9: warning: missing braces around initializer [-Wmissing-braces]
  struct btrfs_root_item ri = { 0 };
         ^
/kisskb/src/fs/btrfs/tree-checker.c:1071:9: warning: (near initialization for 'ri.inode') [-Wmissing-braces]
Completed OK
# rm -rf /kisskb/build/kbuild_s390-defconfig_s390x-gcc4.9
# Build took: 0:02:24.157980