# git rev-parse -q --verify 4ecaacc7563a0d17792353e63ddd6c010e900402^{commit}
4ecaacc7563a0d17792353e63ddd6c010e900402
already have revision, skipping fetch
# git checkout -q -f -B kisskb 4ecaacc7563a0d17792353e63ddd6c010e900402
# git clean -qxdf
# < git log -1
# commit 4ecaacc7563a0d17792353e63ddd6c010e900402
# Author: Jason A. Donenfeld <Jason@zx2c4.com>
# Date:   Mon Dec 23 14:31:47 2019 +0100
# 
#     powerpc/spinlocks: Include correct header for static key
#     
#     Recently, the spinlock implementation grew a static key optimization,
#     but the jump_label.h header include was left out, leading to build
#     errors:
#     
#       linux/arch/powerpc/include/asm/spinlock.h:44:7: error: implicit declaration of function ‘static_branch_unlikely’
#        44 |  if (!static_branch_unlikely(&shared_processor))
#     
#     This commit adds the missing header.
#     
#     mpe: The build break is only seen with CONFIG_JUMP_LABEL=n.
#     
#     Fixes: 656c21d6af5d ("powerpc/shared: Use static key to detect shared processor")
#     Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20191223133147.129983-1-Jason@zx2c4.com
# < /opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-gcc --version
# < /opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-ld --version
# < git log --format=%s --max-count=1 4ecaacc7563a0d17792353e63ddd6c010e900402
# < make -s -j 32 ARCH=sparc64 O=/kisskb/build/powerpc-fixes_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  defconfig
# make -s -j 32 ARCH=sparc64 O=/kisskb/build/powerpc-fixes_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  
<stdin>:1511:2: warning: #warning syscall clone3 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/powerpc-fixes_sparc64-defconfig_sparc64
# Build took: 0:01:25.918892