# git rev-parse -q --verify 6ebb6814a1ef9573d8488232b50dc53b394c025a^{commit}
6ebb6814a1ef9573d8488232b50dc53b394c025a
already have revision, skipping fetch
# git checkout -q -f -B kisskb 6ebb6814a1ef9573d8488232b50dc53b394c025a
# git clean -qxdf
# < git log -1
# commit 6ebb6814a1ef9573d8488232b50dc53b394c025a
# Merge: 0898678c742e 488e13a489e9
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun May 23 06:32:40 2021 -1000
# 
#     Merge tag 'perf-urgent-2021-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
#     
#     Pull perf fixes from Thomas Gleixner:
#      "Two perf fixes:
#     
#        - Do not check the LBR_TOS MSR when setting up unrelated LBR MSRs as
#          this can cause malfunction when TOS is not supported
#     
#        - Allocate the LBR XSAVE buffers along with the DS buffers upfront
#          because allocating them when adding an event can deadlock"
#     
#     * tag 'perf-urgent-2021-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
#       perf/x86/lbr: Remove cpuc->lbr_xsave allocation from atomic context
#       perf/x86: Avoid touching LBR_TOS MSR for Arch LBR
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-ld --version
# < git log --format=%s --max-count=1 6ebb6814a1ef9573d8488232b50dc53b394c025a
# < make -s -j 48 ARCH=arm O=/kisskb/build/linus_efm32_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  efm32_defconfig
***
*** Can't find default configuration "arch/arm/configs/efm32_defconfig"!
***
make[2]: *** [/kisskb/src/scripts/kconfig/Makefile:94: efm32_defconfig] Error 1
make[1]: *** [/kisskb/src/Makefile:614: efm32_defconfig] Error 2
make: *** [Makefile:215: __sub-make] Error 2
Command 'make -s -j 48 ARCH=arm O=/kisskb/build/linus_efm32_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  efm32_defconfig' returned non-zero exit status 2
# rm -rf /kisskb/build/linus_efm32_defconfig_arm-gcc4.9
# Build took: 0:00:01.781048