# git rev-parse -q --verify be2d3ecedd9911fbfd7e55cc9ceac5f8b79ae4cf^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
warning: The last gc run reported the following. Please correct the root cause
and remove .git/gc.log.
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to remove them.

# git rev-parse -q --verify be2d3ecedd9911fbfd7e55cc9ceac5f8b79ae4cf^{commit}
be2d3ecedd9911fbfd7e55cc9ceac5f8b79ae4cf
# git checkout -q -f -B kisskb be2d3ecedd9911fbfd7e55cc9ceac5f8b79ae4cf
# git clean -qxdf
# < git log -1
# commit be2d3ecedd9911fbfd7e55cc9ceac5f8b79ae4cf
# Merge: d897b680418d 7e2022af7921
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sat Apr 2 12:57:17 2022 -0700
# 
#     Merge tag 'perf-tools-for-v5.18-2022-04-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
#     
#     Pull more perf tools updates from Arnaldo Carvalho de Melo:
#     
#      - Avoid SEGV if core.cpus isn't set in 'perf stat'.
#     
#      - Stop depending on .git files for building PERF-VERSION-FILE, used in
#        'perf --version', fixing some perf tools build scenarios.
#     
#      - Convert tracepoint.py example to python3.
#     
#      - Update UAPI header copies from the kernel sources: socket,
#        mman-common, msr-index, KVM, i915 and cpufeatures.
#     
#      - Update copy of libbpf's hashmap.c.
#     
#      - Directly return instead of using local ret variable in
#        evlist__create_syswide_maps(), found by coccinelle.
#     
#     * tag 'perf-tools-for-v5.18-2022-04-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
#       perf python: Convert tracepoint.py example to python3
#       perf evlist: Directly return instead of using local ret variable
#       perf cpumap: More cpu map reuse by merge.
#       perf cpumap: Add is_subset function
#       perf evlist: Rename cpus to user_requested_cpus
#       perf tools: Stop depending on .git files for building PERF-VERSION-FILE
#       tools headers cpufeatures: Sync with the kernel sources
#       tools headers UAPI: Sync drm/i915_drm.h with the kernel sources
#       tools headers UAPI: Sync linux/kvm.h with the kernel sources
#       tools kvm headers arm64: Update KVM headers from the kernel sources
#       tools arch x86: Sync the msr-index.h copy with the kernel sources
#       tools headers UAPI: Sync asm-generic/mman-common.h with the kernel
#       perf beauty: Update copy of linux/socket.h with the kernel sources
#       perf tools: Update copy of libbpf's hashmap.c
#       perf stat: Avoid SEGV if core.cpus isn't set
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 be2d3ecedd9911fbfd7e55cc9ceac5f8b79ae4cf
# < make -s -j 32 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  randconfig
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# < make -s -j 32 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  help
# make -s -j 32 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  olddefconfig
.config:8134:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD
# make -s -j 32 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  
Completed OK
# rm -rf /kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8
# Build took: 0:07:41.210446