# git rev-parse -q --verify daadb3bd0e8d3e317e36bc2c1542e86c528665e5^{commit}
daadb3bd0e8d3e317e36bc2c1542e86c528665e5
already have revision, skipping fetch
# git checkout -q -f -B kisskb daadb3bd0e8d3e317e36bc2c1542e86c528665e5
# git clean -qxdf
# < git log -1
# commit daadb3bd0e8d3e317e36bc2c1542e86c528665e5
# Merge: 6ae71436cda7 f16cc980d649
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Tue Jan 11 17:24:45 2022 -0800
# 
#     Merge tag 'locking_core_for_v5.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
#     
#     Pull locking updates from Borislav Petkov:
#      "Lots of cleanups and preparation. Highlights:
#     
#        - futex: Cleanup and remove runtime futex_cmpxchg detection
#     
#        - rtmutex: Some fixes for the PREEMPT_RT locking infrastructure
#     
#        - kcsan: Share owner_on_cpu() between mutex,rtmutex and rwsem and
#          annotate the racy owner->on_cpu access *once*.
#     
#        - atomic64: Dead-Code-Elemination"
#     
#     [ Description above by Peter Zijlstra ]
#     
#     * tag 'locking_core_for_v5.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
#       locking/atomic: atomic64: Remove unusable atomic ops
#       futex: Fix additional regressions
#       locking: Allow to include asm/spinlock_types.h from linux/spinlock_types_raw.h
#       x86/mm: Include spinlock_t definition in pgtable.
#       locking: Mark racy reads of owner->on_cpu
#       locking: Make owner_on_cpu() into <linux/sched.h>
#       lockdep/selftests: Adapt ww-tests for PREEMPT_RT
#       lockdep/selftests: Skip the softirq related tests on PREEMPT_RT
#       lockdep/selftests: Unbalanced migrate_disable() & rcu_read_lock().
#       lockdep/selftests: Avoid using local_lock_{acquire|release}().
#       lockdep: Remove softirq accounting on PREEMPT_RT.
#       locking/rtmutex: Add rt_mutex_lock_nest_lock() and rt_mutex_lock_killable().
#       locking/rtmutex: Squash self-deadlock check for ww_rt_mutex.
#       locking: Remove rt_rwlock_is_contended().
#       sched: Trigger warning if ->migration_disabled counter underflows.
#       futex: Fix sparc32/m68k/nds32 build regression
#       futex: Remove futex_cmpxchg detection
#       futex: Ensure futex_atomic_cmpxchg_inatomic() is present
#       kernel/locking: Use a pointer in ww_mutex_trylock().
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 daadb3bd0e8d3e317e36bc2c1542e86c528665e5
# < make -s -j 24 ARCH=powerpc O=/kisskb/build/linus_skiroot_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  skiroot_defconfig
# < make -s -j 24 ARCH=powerpc O=/kisskb/build/linus_skiroot_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 24 ARCH=powerpc O=/kisskb/build/linus_skiroot_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 24 ARCH=powerpc O=/kisskb/build/linus_skiroot_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/arch/powerpc/kernel/stacktrace.c: In function 'handle_backtrace_ipi':
/kisskb/src/arch/powerpc/kernel/stacktrace.c:171:2: error: implicit declaration of function 'nmi_cpu_backtrace' [-Werror=implicit-function-declaration]
  nmi_cpu_backtrace(regs);
  ^
/kisskb/src/arch/powerpc/kernel/stacktrace.c: In function 'arch_trigger_cpumask_backtrace':
/kisskb/src/arch/powerpc/kernel/stacktrace.c:226:2: error: implicit declaration of function 'nmi_trigger_cpumask_backtrace' [-Werror=implicit-function-declaration]
  nmi_trigger_cpumask_backtrace(mask, exclude_self, raise_backtrace_ipi);
  ^
cc1: all warnings being treated as errors
make[3]: *** [/kisskb/src/scripts/Makefile.build:287: arch/powerpc/kernel/stacktrace.o] Error 1
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [/kisskb/src/scripts/Makefile.build:549: arch/powerpc/kernel] Error 2
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [/kisskb/src/Makefile:1851: arch/powerpc] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:219: __sub-make] Error 2
Command 'make -s -j 24 ARCH=powerpc O=/kisskb/build/linus_skiroot_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus_skiroot_defconfig_powerpc-gcc5
# Build took: 0:01:47.576452