# git rev-parse -q --verify c12a29ed9094b4b9cde8965c12850460b9a79d7c^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
# git rev-parse -q --verify c12a29ed9094b4b9cde8965c12850460b9a79d7c^{commit}
c12a29ed9094b4b9cde8965c12850460b9a79d7c
# git checkout -q -f -B kisskb c12a29ed9094b4b9cde8965c12850460b9a79d7c
# git clean -qxdf
# < git log -1
# commit c12a29ed9094b4b9cde8965c12850460b9a79d7c
# Merge: e7c425b7441a 3743d55b289c
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sat May 15 10:24:48 2021 -0700
# 
#     Merge tag 'sched-urgent-2021-05-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
#     
#     Pull scheduler fixes from Ingo Molnar:
#      "Fix an idle CPU selection bug, and an AMD Ryzen maximum frequency
#       enumeration bug"
#     
#     * tag 'sched-urgent-2021-05-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
#       x86, sched: Fix the AMD CPPC maximum performance value on certain AMD Ryzen generations
#       sched/fair: Fix clearing of has_idle_cores flag in select_idle_cpu()
# < /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 c12a29ed9094b4b9cde8965c12850460b9a79d7c
# < make -s -j 24 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 24 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 24 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:5878:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD
# make -s -j 24 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: 0:06:49.713475