# git rev-parse -q --verify 04483fc005f81d678e4fe63e36eab4fb39c5277b^{commit}
04483fc005f81d678e4fe63e36eab4fb39c5277b
already have revision, skipping fetch
# git checkout -q -f -B kisskb 04483fc005f81d678e4fe63e36eab4fb39c5277b
# git clean -qxdf
# < git log -1
# commit 04483fc005f81d678e4fe63e36eab4fb39c5277b
# Author: Nicholas Piggin <npiggin@gmail.com>
# Date:   Mon Jan 18 22:34:51 2021 +1000
# 
#     powerpc: Always enable queued spinlocks for 64s, disable for others
#     
#     Queued spinlocks have shown to have good performance and fairness
#     properties even on smaller (2 socket) POWER systems. This selects them
#     automatically for 64s. For other platforms they are de-selected, the
#     standard spinlock is far simpler and smaller code, and single chips
#     with a handful of cores is unlikely to show any improvement.
#     
#     CONFIG_EXPERT still allows this to be changed, e.g., to help debug
#     performance or correctness issues.
#     
#     Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20210118123451.1452206-1-npiggin@gmail.com
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/alpha-linux/bin/alpha-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/alpha-linux/bin/alpha-linux-ld --version
# < git log --format=%s --max-count=1 04483fc005f81d678e4fe63e36eab4fb39c5277b
# < make -s -j 48 ARCH=alpha O=/kisskb/build/powerpc-next_alpha-defconfig_alpha-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/alpha-linux/bin/alpha-linux-  defconfig
# < make -s -j 48 ARCH=alpha O=/kisskb/build/powerpc-next_alpha-defconfig_alpha-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/alpha-linux/bin/alpha-linux-  help
# make -s -j 48 ARCH=alpha O=/kisskb/build/powerpc-next_alpha-defconfig_alpha-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/alpha-linux/bin/alpha-linux-  olddefconfig
# make -s -j 48 ARCH=alpha O=/kisskb/build/powerpc-next_alpha-defconfig_alpha-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/alpha-linux/bin/alpha-linux-  
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
WARNING: modpost: "saved_config" [vmlinux] is COMMON symbol
  Kernel arch/alpha/boot/vmlinux.gz is ready
Completed OK
# rm -rf /kisskb/build/powerpc-next_alpha-defconfig_alpha-gcc4.9
# Build took: 0:00:46.816006