# git rev-parse -q --verify c76e02c59e13ae6c22cc091786d16c01bee23a14^{commit}
c76e02c59e13ae6c22cc091786d16c01bee23a14
already have revision, skipping fetch
# git checkout -q -f -B kisskb c76e02c59e13ae6c22cc091786d16c01bee23a14
# git clean -qxdf
# < git log -1
# commit c76e02c59e13ae6c22cc091786d16c01bee23a14
# Merge: 91afe604c154 01341fbd0d8d
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Mon Dec 28 11:23:02 2020 -0800
# 
#     Merge branch 'for-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
#     
#     Pull workqueue update from Tejun Heo:
#      "The same as the cgroup tree - one commit which was scheduled for the
#       5.11 merge window.
#     
#       All the commit does is avoding spurious worker wakeups from workqueue
#       allocation / config change path to help cpuisol use cases"
#     
#     * 'for-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
#       workqueue: Kick a worker based on the actual activation of delayed works
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 c76e02c59e13ae6c22cc091786d16c01bee23a14
# < make -s -j 10 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 allyesconfig
# Added to kconfig CONFIG_STANDALONE=y
# Added to kconfig CONFIG_KCOV=n
# Added to kconfig CONFIG_GCC_PLUGINS=n
# Added to kconfig CONFIG_GCC_PLUGIN_CYC_COMPLEXITY=n
# Added to kconfig CONFIG_GCC_PLUGIN_SANCOV=n
# Added to kconfig CONFIG_GCC_PLUGIN_LATENT_ENTROPY=n
# Added to kconfig CONFIG_GCC_PLUGIN_STRUCTLEAK=n
# Added to kconfig CONFIG_GCC_PLUGIN_RANDSTRUCT=n
# Added to kconfig CONFIG_UML_NET=n
# Added to kconfig CONFIG_UML_NET_ETHERTAP=n
# Added to kconfig CONFIG_UML_NET_TUNTAP=n
# Added to kconfig CONFIG_UML_NET_SLIP=n
# Added to kconfig CONFIG_UML_NET_DAEMON=n
# Added to kconfig CONFIG_UML_NET_VDE=n
# Added to kconfig CONFIG_UML_NET_MCAST=n
# Added to kconfig CONFIG_UML_NET_PCAP=n
# Added to kconfig CONFIG_UML_NET_SLIRP=n
# Added to kconfig CONFIG_GCOV_KERNEL=n
# Added to kconfig CONFIG_DEBUG_INFO_BTF=n
# < make -s -j 10 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 help
# make -s -j 10 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 olddefconfig
.config:4525:warning: override: reassigning to symbol GCC_PLUGIN_CYC_COMPLEXITY
.config:4527:warning: override: reassigning to symbol GCC_PLUGIN_LATENT_ENTROPY
.config:4531:warning: override: reassigning to symbol UML_NET_ETHERTAP
.config:4533:warning: override: reassigning to symbol UML_NET_SLIP
.config:4536:warning: override: reassigning to symbol UML_NET_MCAST
.config:4538:warning: override: reassigning to symbol UML_NET_SLIRP
# make -s -j 10 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 

Auto-detecting system features:
...                        libelf: [ OFF ]
...                          zlib: [ OFF ]
...                           bpf: [ on  ]

No libelf found
make[5]: *** [Makefile:287: elfdep] Error 1
make[4]: *** [/kisskb/src/kernel/bpf/preload/Makefile:8: kernel/bpf/preload/libbpf.a] Error 2
make[3]: *** [/kisskb/src/scripts/Makefile.build:496: kernel/bpf/preload] Error 2
make[2]: *** [/kisskb/src/scripts/Makefile.build:496: kernel/bpf] Error 2
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [/kisskb/src/Makefile:1805: kernel] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:185: __sub-make] Error 2
Command 'make -s -j 10 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus_um-allyesconfig_um-x86_64
# Build took: 0:06:59.858351