# git rev-parse -q --verify 9c5d00cb7b6bbc5a7965d9ab7d223b5402d1f02c^{commit}
9c5d00cb7b6bbc5a7965d9ab7d223b5402d1f02c
already have revision, skipping fetch
# git checkout -q -f -B kisskb 9c5d00cb7b6bbc5a7965d9ab7d223b5402d1f02c
# git clean -qxdf
# < git log -1
# commit 9c5d00cb7b6bbc5a7965d9ab7d223b5402d1f02c
# Merge: 444ccf1b11a0 4fa008a2db48
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Fri Oct 20 14:49:24 2023 -0700
# 
#     Merge tag 'perf-tools-fixes-for-v6.6-2-2023-10-20' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools
#     
#     Pull perf tools fixes from Arnaldo Carvalho de Melo:
#     
#      - Fix regression in reading scale and unit files from sysfs for PMU
#        events, so that we can use that info to pretty print instead of
#        printing raw numbers:
#     
#          # perf stat -e power/energy-ram/,power/energy-gpu/ sleep 2
#     
#           Performance counter stats for 'system wide':
#     
#                      1.64 Joules power/energy-ram/
#                      0.20 Joules power/energy-gpu/
#     
#               2.001228914 seconds time elapsed
#          #
#          # grep -m1 "model name" /proc/cpuinfo
#          model name : Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz
#          #
#     
#      - The small llvm.cpp file used to check if the llvm devel files are
#        present was incorrectly deleted when removing the BPF event in 'perf
#        trace', put it back as it is also used by tools/bpf/bpftool, that
#        uses llvm routines to do disassembly of BPF object files.
#     
#      - Fix use of addr_location__exit() in dlfilter__object_code(), making
#        sure that it is only used to pair a previous addr_location__init()
#        call.
#     
#     * tag 'perf-tools-fixes-for-v6.6-2-2023-10-20' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools:
#       tools build: Fix llvm feature detection, still used by bpftool
#       perf dlfilter: Add a test for object_code()
#       perf dlfilter: Fix use of addr_location__exit() in dlfilter__object_code()
#       perf pmu: Fix perf stat output with correct scale and unit
# < /opt/cross/kisskb/korg/gcc-12.2.0-nolibc/s390-linux/bin/s390-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-12.2.0-nolibc/s390-linux/bin/s390-linux-ld --version
# < git log --format=%s --max-count=1 9c5d00cb7b6bbc5a7965d9ab7d223b5402d1f02c
# make -s -j 40 ARCH=s390 O=/kisskb/build/linus_defconfig_s390x-gcc12 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-12.2.0-nolibc/s390-linux/bin/s390-linux-  defconfig
# Added to kconfig CONFIG_DEBUG_INFO_BTF=n
# Added to kconfig 
# < make -s -j 40 ARCH=s390 O=/kisskb/build/linus_defconfig_s390x-gcc12 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-12.2.0-nolibc/s390-linux/bin/s390-linux-  help
# make -s -j 40 ARCH=s390 O=/kisskb/build/linus_defconfig_s390x-gcc12 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-12.2.0-nolibc/s390-linux/bin/s390-linux-  olddefconfig
.config:3704:warning: override: reassigning to symbol DEBUG_INFO_BTF
# make -s -j 40 ARCH=s390 O=/kisskb/build/linus_defconfig_s390x-gcc12 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-12.2.0-nolibc/s390-linux/bin/s390-linux-  
Completed OK
# rm -rf /kisskb/build/linus_defconfig_s390x-gcc12
# Build took: 0:02:55.188580