# git rev-parse -q --verify 316a1c580c288031b7957e39e160ca285f6e1e3a^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/mirror/linux-kbuild.git for-next
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 316a1c580c288031b7957e39e160ca285f6e1e3a^{commit}
316a1c580c288031b7957e39e160ca285f6e1e3a
# git checkout -q -f -B kisskb 316a1c580c288031b7957e39e160ca285f6e1e3a
# git clean -qxdf
# < git log -1
# commit 316a1c580c288031b7957e39e160ca285f6e1e3a
# Author: Masahiro Yamada <masahiroy@kernel.org>
# Date:   Thu May 6 02:45:15 2021 +0900
# 
#     linux/kconfig.h: replace IF_ENABLED() with PTR_IF() in <linux/kernel.h>
#     
#     <linux/kconfig.h> is included from all the kernel-space source files,
#     including C, assembly, linker scripts. It is intended to contain a
#     minimal set of macros to evaluate CONFIG options.
#     
#     IF_ENABLED() is an intruder here because (x ? y : z) is C code, which
#     should not be included from assembly files or linker scripts.
#     
#     Also, <linux/kconfig.h> is no longer self-contained because NULL is
#     defined in <linux/stddef.h>.
#     
#     Move IF_ENABLED() out to <linux/kernel.h> as PTR_IF(). PTF_IF()
#     takes the general boolean expression instead of a CONFIG option
#     so that it fits better in <linux/kernel.h>.
#     
#     Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
#     Reviewed-by: Kees Cook <keescook@chromium.org>
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 316a1c580c288031b7957e39e160ca285f6e1e3a
# < make -s -j 120 ARCH=x86_64 O=/kisskb/build/kbuild_x86_64-allnoconfig_x86_64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-  allnoconfig
# < make -s -j 120 ARCH=x86_64 O=/kisskb/build/kbuild_x86_64-allnoconfig_x86_64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-  help
# make -s -j 120 ARCH=x86_64 O=/kisskb/build/kbuild_x86_64-allnoconfig_x86_64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-  olddefconfig
# make -s -j 120 ARCH=x86_64 O=/kisskb/build/kbuild_x86_64-allnoconfig_x86_64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-  
Completed OK
# rm -rf /kisskb/build/kbuild_x86_64-allnoconfig_x86_64-gcc4.9
# Build took: 0:00:24.020389