# git rev-parse -q --verify 60b04df6bfbf7e65954c44f7945b381e0fee5b6a^{commit}
60b04df6bfbf7e65954c44f7945b381e0fee5b6a
already have revision, skipping fetch
# git checkout -q -f -B kisskb 60b04df6bfbf7e65954c44f7945b381e0fee5b6a
# git clean -qxdf
# < git log -1
# commit 60b04df6bfbf7e65954c44f7945b381e0fee5b6a
# Merge: fd7a6d2b8f1d b4adfe55915d
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sat Dec 21 12:17:14 2019 -0800
# 
#     Merge tag 's390-5.5-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
#     
#     Pull s390 fixes from Vasily Gorbik:
#     
#      - Fix unwinding from irq context of interrupted user process.
#     
#      - Add purgatory build missing symbols check. That helped to uncover and
#        fix missing symbols when built with kasan support enabled.
#     
#      - Couple of ftrace fixes. Avoid broken stack trace and fix recursion
#        loop in function_graph tracer.
#     
#     * tag 's390-5.5-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
#       s390/ftrace: save traced function caller
#       s390/unwind: stop gracefully at user mode pt_regs in irq stack
#       s390/purgatory: do not build purgatory with kcov, kasan and friends
#       s390/purgatory: Make sure we fail the build if purgatory has missing symbols
#       s390/ftrace: fix endless recursion in function_graph tracer
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-ld --version
# < git log --format=%s --max-count=1 60b04df6bfbf7e65954c44f7945b381e0fee5b6a
# < make -s -j 24 ARCH=s390 O=/kisskb/build/linus_s390-allnoconfig_s390x-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-  allnoconfig
# make -s -j 24 ARCH=s390 O=/kisskb/build/linus_s390-allnoconfig_s390x-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-  
Completed OK
# rm -rf /kisskb/build/linus_s390-allnoconfig_s390x-gcc8
# Build took: 0:00:22.127703