Merge branch into tip/master: 'locking/core'

 # New commits in locking/core:
    337369f8ce9e ("locking/mutex: Add MUTEX_WARN_ON() into fast path")
    2d352ec9fcb5 ("x86/locking: Use asm_inline for {,try_}cmpxchg{64,128} emulations")
    4087e16b0331 ("x86/locking: Use ALT_OUTPUT_SP() for percpu_{,try_}cmpxchg{64,128}_op()")

Signed-off-by: Ingo Molnar <mingo@kernel.org>