# git rev-parse -q --verify 49afe6614321e78727729680b97e96998695249a^{commit}
49afe6614321e78727729680b97e96998695249a
already have revision, skipping fetch
# git checkout -q -f -B kisskb 49afe6614321e78727729680b97e96998695249a
# git clean -qxdf
# < git log -1
# commit 49afe6614321e78727729680b97e96998695249a
# Merge: 0f1f69237545 5cf99a0f3161
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Fri Nov 30 10:40:11 2018 -0800
# 
#     Merge tag 'trace-v4.20-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
#     
#     Pull more tracing fixes from Steven Rostedt:
#      "Two more fixes:
#     
#        - Change idx variable in DO_TRACE macro to __idx to avoid name
#          conflicts. A kvm event had "idx" as a parameter and it confused the
#          macro.
#     
#        - Fix a race where interrupts would be traced when set_graph_function
#          was set. The previous patch set increased a race window that
#          tricked the function graph tracer to think it should trace
#          interrupts when it really should not have.
#     
#          The bug has been there before, but was seldom hit. Only the last
#          patch series made it more common"
#     
#     * tag 'trace-v4.20-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
#       tracing/fgraph: Fix set_graph_function from showing interrupts
#       tracepoint: Use __idx instead of idx in DO_TRACE macro to make it unique
# < /opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-gcc --version
# < git log --format=%s --max-count=1 49afe6614321e78727729680b97e96998695249a
# < make -s -j 120 ARCH=sparc64 O=/kisskb/build/linus_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  defconfig
# make -s -j 120 ARCH=sparc64 O=/kisskb/build/linus_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  
<stdin>:1335:2: warning: #warning syscall rseq not implemented [-Wcpp]
WARNING: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.
WARNING: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.
  kernel: arch/sparc/boot/image is ready
  kernel: arch/sparc/boot/zImage is ready
Completed OK
# rm -rf /kisskb/build/linus_sparc64-defconfig_sparc64
# Build took: 0:00:41.709672