# git rev-parse -q --verify 903b77c631673eeec9e9114e9524171cdf9a2646^{commit}
903b77c631673eeec9e9114e9524171cdf9a2646
already have revision, skipping fetch
# git checkout -q -f -B kisskb 903b77c631673eeec9e9114e9524171cdf9a2646
# git clean -qxdf
# < git log -1
# commit 903b77c631673eeec9e9114e9524171cdf9a2646
# Merge: 457fa3469a65 283ac6d5fb2a
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Fri Dec 28 21:27:13 2018 -0800
# 
#     Merge tag 'linux-kselftest-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
#     
#     Pull Kselftest updates from Shuah Khan:
#     
#      - fixes and improvements to the framework, and individual tests
#     
#      - a new media test for IR encoders from Sean Young
#     
#      - a new watchdog test option to find time left on a timer
#     
#     * tag 'linux-kselftest-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
#       selftests: Fix test errors related to lib.mk khdr target
#       fix dma-buf/udmabuf selftest
#       selftests: watchdog: fix spelling mistake "experies" -> "expires"
#       selftests: watchdog: Add gettimeleft command line arg
#       selftests: do not macro-expand failed assertion expressions
#       selftests/ftrace: Fix invalid SPDX identifiers
#       selftests: gpio: Find libmount with pkg-config if available
#       selftests: firmware: add CONFIG_FW_LOADER_USER_HELPER_FALLBACK to config
#       selftests: firmware: remove use of non-standard diff -Z option
#       media: rc: self test for IR encoders and decoders
# < /opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-gcc --version
# < /opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-ld --version
# < git log --format=%s --max-count=1 903b77c631673eeec9e9114e9524171cdf9a2646
# < make -s -j 80 ARCH=xtensa O=/kisskb/build/linus_xtensa-allnoconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-  allnoconfig
drivers/staging/mt7621-dts/Kconfig:4:warning: 'BUILTIN_DTB' has wrong type. 'select' only accept arguments of bool and tristate type
# make -s -j 80 ARCH=xtensa O=/kisskb/build/linus_xtensa-allnoconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-  
<stdin>:1333:2: warning: #warning syscall io_pgetevents not implemented [-Wcpp]
<stdin>:1336:2: warning: #warning syscall rseq not implemented [-Wcpp]
Completed OK
# rm -rf /kisskb/build/linus_xtensa-allnoconfig_xtensa
# Build took: 0:00:17.199113