# git rev-parse -q --verify 126afc459a8bcf88e4bcfb54148565dd3dba49a3^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/mirror/linux-kbuild.git for-next
# git rev-parse -q --verify 126afc459a8bcf88e4bcfb54148565dd3dba49a3^{commit}
126afc459a8bcf88e4bcfb54148565dd3dba49a3
# git checkout -q -f -B kisskb 126afc459a8bcf88e4bcfb54148565dd3dba49a3
# git clean -qxdf
# < git log -1
# commit 126afc459a8bcf88e4bcfb54148565dd3dba49a3
# Author: Masahiro Yamada <masahiroy@kernel.org>
# Date:   Mon Sep 26 18:02:29 2022 +0900
# 
#     kallsyms: ignore __kstrtab_* and __kstrtabns_* symbols
#     
#     Every EXPORT_SYMBOL creates __kstrtab_* and __kstrtabns_*, which
#     consumes 15-20% of the kallsyms entries.
#     
#     For x86_64 defconfig,
#     
#       $ cat /proc/kallsyms | wc
#          129527    388581   5685465
#       $ cat /proc/kallsyms | grep __kstrtab | wc
#           23489     70467   1187932
#     
#     We already ignore __crc_* symbols populated by EXPORT_SYMBOL, so it
#     should be fine to ignore __kstrtab_* and __kstrtabns_* as well.
#     
#     This makes vmlinux a bit smaller.
#     
#       $ size vmlinux.before vmlinux.after
#          text    data     bss     dec     hex filename
#       22785374        8559694 1413328 32758396        1f3da7c vmlinux.before
#       22785374        8137806 1413328 32336508        1ed6a7c vmlinux.after
#     
#     Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/aarch64-linux/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/aarch64-linux/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 126afc459a8bcf88e4bcfb54148565dd3dba49a3
# < make -s -j 24 ARCH=arm64 O=/kisskb/build/kbuild_arm64-defconfig_arm64-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/aarch64-linux/bin/aarch64-linux-  defconfig
# < make -s -j 24 ARCH=arm64 O=/kisskb/build/kbuild_arm64-defconfig_arm64-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/aarch64-linux/bin/aarch64-linux-  help
# make -s -j 24 ARCH=arm64 O=/kisskb/build/kbuild_arm64-defconfig_arm64-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/aarch64-linux/bin/aarch64-linux-  olddefconfig
# make -s -j 24 ARCH=arm64 O=/kisskb/build/kbuild_arm64-defconfig_arm64-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/aarch64-linux/bin/aarch64-linux-  
Completed OK
# rm -rf /kisskb/build/kbuild_arm64-defconfig_arm64-gcc5
# Build took: 0:13:00.480319