# git rev-parse -q --verify 291009f656e8eaebbdfd3a8d99f6b190a9ce9deb^{commit}
291009f656e8eaebbdfd3a8d99f6b190a9ce9deb
already have revision, skipping fetch
# git checkout -q -f -B kisskb 291009f656e8eaebbdfd3a8d99f6b190a9ce9deb
# git clean -qxdf
# < git log -1
# commit 291009f656e8eaebbdfd3a8d99f6b190a9ce9deb
# Merge: a3961497bd9c d11a1d08a082
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Wed Feb 10 12:03:35 2021 -0800
# 
#     Merge tag 'pm-5.11-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
#     
#     Pull power management fixes from Rafael Wysocki:
#      "Address a performance regression related to scale-invariance on x86
#       that may prevent turbo CPU frequencies from being used in certain
#       workloads on systems using acpi-cpufreq as the CPU performance scaling
#       driver and schedutil as the scaling governor"
#     
#     * tag 'pm-5.11-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
#       cpufreq: ACPI: Update arch scale-invariance max perf ratio if CPPC is not there
#       cpufreq: ACPI: Extend frequency tables to cover boost frequencies
# < /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 291009f656e8eaebbdfd3a8d99f6b190a9ce9deb
# < make -s -j 24 ARCH=um O=/kisskb/build/linus_um-allmodconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 allmodconfig
# 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 24 ARCH=um O=/kisskb/build/linus_um-allmodconfig_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 24 ARCH=um O=/kisskb/build/linus_um-allmodconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 olddefconfig
.config:4499:warning: override: reassigning to symbol GCC_PLUGIN_CYC_COMPLEXITY
.config:4501:warning: override: reassigning to symbol GCC_PLUGIN_LATENT_ENTROPY
.config:4505:warning: override: reassigning to symbol UML_NET_ETHERTAP
.config:4507:warning: override: reassigning to symbol UML_NET_SLIP
.config:4510:warning: override: reassigning to symbol UML_NET_MCAST
.config:4512:warning: override: reassigning to symbol UML_NET_SLIRP
# make -s -j 24 ARCH=um O=/kisskb/build/linus_um-allmodconfig_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:11: kernel/bpf/preload/libbpf.a] Error 2
make[3]: *** [/kisskb/src/scripts/Makefile.build:496: kernel/bpf/preload] Error 2
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [/kisskb/src/scripts/Makefile.build:496: kernel/bpf] Error 2
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [/kisskb/src/Makefile:1800: kernel] Error 2
make[1]: *** Waiting for unfinished jobs....
/kisskb/src/drivers/rtc/rtc-rx6110.c:314:12: warning: 'rx6110_probe' defined but not used [-Wunused-function]
 static int rx6110_probe(struct rx6110_data *rx6110, struct device *dev)
            ^
make: *** [Makefile:185: __sub-make] Error 2
Command 'make -s -j 24 ARCH=um O=/kisskb/build/linus_um-allmodconfig_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-allmodconfig_um-x86_64
# Build took: 0:06:22.731163