# git rev-parse -q --verify 5814bc2d4cc241c1a603fac2b5bf1bd4daa108fc^{commit}
5814bc2d4cc241c1a603fac2b5bf1bd4daa108fc
already have revision, skipping fetch
# git checkout -q -f -B kisskb 5814bc2d4cc241c1a603fac2b5bf1bd4daa108fc
# git clean -qxdf
# < git log -1
# commit 5814bc2d4cc241c1a603fac2b5bf1bd4daa108fc
# Merge: 42dc45e84452 5149303fdfe5
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Fri Dec 25 11:07:34 2020 -0800
# 
#     Merge tag 'perf-tools-2020-12-24' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
#     
#     Pull more perf tools updates from Arnaldo Carvalho de Melo:
#     
#      - Refactor 'perf stat' per CPU/socket/die/thread aggregation fixing use
#        cases in ARM machines.
#     
#      - Fix memory leak when synthesizing SDT probes in 'perf probe'.
#     
#      - Update kernel header copies related to KVM, epol_pwait. msr-index and
#        powerpc and s390 syscall tables.
#     
#     * tag 'perf-tools-2020-12-24' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (24 commits)
#       perf probe: Fix memory leak when synthesizing SDT probes
#       perf stat aggregation: Add separate thread member
#       perf stat aggregation: Add separate core member
#       perf stat aggregation: Add separate die member
#       perf stat aggregation: Add separate socket member
#       perf stat aggregation: Add separate node member
#       perf stat aggregation: Start using cpu_aggr_id in map
#       perf cpumap: Drop in cpu_aggr_map struct
#       perf cpumap: Add new map type for aggregation
#       perf stat: Replace aggregation ID with a struct
#       perf cpumap: Add new struct for cpu aggregation
#       perf cpumap: Use existing allocator to avoid using malloc
#       perf tests: Improve topology test to check all aggregation types
#       perf tools: Update s390's syscall.tbl copy from the kernel sources
#       perf tools: Update powerpc's syscall.tbl copy from the kernel sources
#       perf s390: Move syscall.tbl check into check-headers.sh
#       perf powerpc: Move syscall.tbl check to check-headers.sh
#       tools headers UAPI: Synch KVM's svm.h header with the kernel
#       tools kvm headers: Update KVM headers from the kernel sources
#       tools headers UAPI: Sync KVM's vmx.h header with the kernel sources
#       ...
# < /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 5814bc2d4cc241c1a603fac2b5bf1bd4daa108fc
# < make -s -j 120 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
# yes \n | make -s -j 120 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 oldconfig
yes: standard output: Broken pipe
# make -s -j 120 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: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....
/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 120 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: 0:02:53.500095