# git rev-parse -q --verify 7246f4dcaccc8de76a96a41359d89c3c791579bc^{commit}
7246f4dcaccc8de76a96a41359d89c3c791579bc
already have revision, skipping fetch
# git checkout -q -f -B kisskb 7246f4dcaccc8de76a96a41359d89c3c791579bc
# git clean -qxdf
# < git log -1
# commit 7246f4dcaccc8de76a96a41359d89c3c791579bc
# Author: Sasha Levin <sashal@kernel.org>
# Date:   Fri Nov 12 10:16:02 2021 -0500
# 
#     tools/lib/lockdep: drop liblockdep
#     
#     TL;DR: While a tool like liblockdep is useful, it probably doesn't
#     belong within the kernel tree.
#     
#     liblockdep attempts to reuse kernel code both directly (by directly
#     building the kernel's lockdep code) as well as indirectly (by using
#     sanitized headers). This makes liblockdep an integral part of the
#     kernel.
#     
#     It also makes liblockdep quite unique: while other userspace code might
#     use sanitized headers, it generally doesn't attempt to use kernel code
#     directly which means that changes on the kernel side of things don't
#     affect (and break) it directly.
#     
#     All our workflows and tooling around liblockdep don't support this
#     uniqueness. Changes that go into the kernel code aren't validated to not
#     break in-tree userspace code.
#     
#     liblockdep ended up being very fragile, breaking over and over, to the
#     point that living in the same tree as the lockdep code lost most of it's
#     value.
#     
#     liblockdep should continue living in an external tree, syncing with
#     the kernel often, in a controllable way.
#     
#     Signed-off-by: Sasha Levin <sashal@kernel.org>
#     Cc: Ingo Molnar <mingo@kernel.org>
#     Cc: Peter Zijlstra <peterz@infradead.org>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 7246f4dcaccc8de76a96a41359d89c3c791579bc
# < make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  randconfig
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# < make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  help
# make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  olddefconfig
.config:7047:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD
# make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  
Completed OK
# rm -rf /kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11
# Build took: 0:07:33.328107