Merge commit 'paulus-perf/master' into next

arch/powerpc/Kconfig

arch/powerpc/include/asm/asm-compat.h

arch/powerpc/include/asm/cputable.h

arch/powerpc/include/asm/hw_breakpoint.h

arch/powerpc/include/asm/ppc-opcode.h

arch/powerpc/include/asm/processor.h

arch/powerpc/kernel/Makefile

arch/powerpc/kernel/exceptions-64s.S

arch/powerpc/kernel/hw_breakpoint.c

arch/powerpc/kernel/machine_kexec_64.c

arch/powerpc/kernel/process.c

arch/powerpc/kernel/ptrace.c

arch/powerpc/kernel/signal.c

arch/powerpc/kernel/traps.c

arch/powerpc/lib/Makefile

arch/powerpc/lib/ldstfp.S

arch/powerpc/lib/sstep.c

kernel/hw_breakpoint.c