# git rev-parse -q --verify f21f7fa263ac005713f0a7a43179c5aea0fabe85^{commit}
f21f7fa263ac005713f0a7a43179c5aea0fabe85
already have revision, skipping fetch
# git checkout -q -f -B kisskb f21f7fa263ac005713f0a7a43179c5aea0fabe85
# git clean -qxdf
# < git log -1
# commit f21f7fa263ac005713f0a7a43179c5aea0fabe85
# Merge: eba2d6b34a32 83f365554e47
# Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
# Date:   Wed Sep 19 07:41:46 2018 +0200
# 
#     Merge tag 'trace-v4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
#     
#     Steven writes:
#       "Vaibhav Nagarnaik found that modifying the ring buffer size could cause
#        a huge latency in the system because it does a while loop to free pages
#        without releasing the CPU (on non preempt kernels). In a case where there
#        are hundreds of thousands of pages to free it could actually cause a system
#        stall. A properly place cond_resched() solves this issue."
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < git log --format=%s --max-count=1 f21f7fa263ac005713f0a7a43179c5aea0fabe85
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/linus_44x_fsp2_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  44x/fsp2_defconfig
# make -s -j 48 ARCH=powerpc O=/kisskb/build/linus_44x_fsp2_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
INFO: Uncompressed kernel (size 0x8c6c64) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x900000)
Image Name:   Linux-4.19.0-rc4-gf21f7fa263ac
Created:      Wed Sep 19 23:23:56 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    3965669 Bytes = 3872.72 KiB = 3.78 MiB
Load Address: 00000000
Entry Point:  00000000
Completed OK
# rm -rf /kisskb/build/linus_44x_fsp2_defconfig_powerpc-gcc5
# Build took: 0:01:02.708341