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commit 34973baea0f0b8ae6e013abdfbd9b97f1bfdde99
Author: Nicholas Piggin <npiggin@gmail.com>
Date:   Mon Mar 20 16:01:52 2017 +1000

    powerpc/64s: idle POWER8 avoid full state loss recovery where possible
    
    If not all threads were in winkle, full state loss recovery is not
    necessary and can be avoided. A previous patch removed this optimisation
    due to some complexity with the implementation. Re-implement it by
    counting the number of threads in winkle with the per-core idle state.
    Only restore full state loss if all threads were in winkle.
    
    This has a small window of false positives right before threads execute
    winkle and just after they wake up, when the winkle count does not
    reflect the true number of threads in winkle. This is not a significant
    problem in comparison with even the minimum winkle duration. For
    correctness, a false positive is not a problem (only false negatives
    would be).
    
    Reviewed-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
    Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
    Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < git log --format=%s --max-count=1 34973baea0f0b8ae6e013abdfbd9b97f1bfdde99
# < make -j 10 ARCH=powerpc O=/home/kisskb/slave/build/powerpc-next_ppc64_defconfig+NO_TM_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  ppc64_defconfig
# Added to kconfig CONFIG_PPC_TRANSACTIONAL_MEM=n
# yes \n | make -j 10 ARCH=powerpc O=/home/kisskb/slave/build/powerpc-next_ppc64_defconfig+NO_TM_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  oldconfig
yes: standard output: Broken pipe
yes: write error
# make -j 10 ARCH=powerpc O=/home/kisskb/slave/build/powerpc-next_ppc64_defconfig+NO_TM_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
make[1]: Entering directory '/home/kisskb/slave/build/powerpc-next_ppc64_defconfig+NO_TM_powerpc'
  GEN     ./Makefile
scripts/kconfig/conf  --silentoldconfig Kconfig
  CHK     include/config/kernel.release
  GEN     ./Makefile
  WRAP    arch/powerpc/include/generated/asm/clkdev.h
  WRAP    arch/powerpc/include/generated/asm/div64.h
  WRAP    arch/powerpc/include/generated/asm/export.h
  WRAP    arch/powerpc/include/generated/asm/irq_regs.h
  WRAP    arch/powerpc/include/generated/asm/irq_work.h
  WRAP    arch/powerpc/include/generated/asm/local64.h
  WRAP    arch/powerpc/include/generated/asm/mcs_spinlock.h
  WRAP    arch/powerpc/include/generated/asm/preempt.h
  WRAP    arch/powerpc/include/generated/asm/rwsem.h
  WRAP    arch/powerpc/include/generated/asm/vtime.h
  CHK     include/generated/uapi/linux/version.h
  UPD     include/generated/uapi/linux/version.h
  HOSTCC  scripts/basic/bin2c
  UPD     include/config/kernel.release
  Using /home/kisskb/slave/src as source for kernel
  CHK     include/generated/utsrelease.h
  UPD     include/generated/utsrelease.h
  HOSTCC  scripts/dtc/dtc.o
  HOSTCC  scripts/genksyms/genksyms.o
  SHIPPED scripts/genksyms/parse.tab.c
  SHIPPED scripts/genksyms/lex.lex.c
  SHIPPED scripts/genksyms/keywords.hash.c
  HOSTCC  scripts/kallsyms
  CC      scripts/mod/empty.o
  HOSTCC  scripts/mod/mk_elfconfig
  SHIPPED scripts/genksyms/parse.tab.h
  HOSTCC  scripts/genksyms/parse.tab.o
  CC      scripts/mod/devicetable-offsets.s
  HOSTCC  scripts/genksyms/lex.lex.o
  HOSTCC  scripts/pnmtologo
  GEN     scripts/mod/devicetable-offsets.h
  MKELF   scripts/mod/elfconfig.h
  HOSTCC  scripts/mod/modpost.o
  HOSTCC  scripts/dtc/flattree.o
  HOSTCC  scripts/conmakehash
  HOSTCC  scripts/mod/file2alias.o
  HOSTCC  scripts/mod/sumversion.o
  HOSTCC  scripts/sortextable
  HOSTCC  scripts/dtc/fstree.o
  HOSTCC  scripts/dtc/data.o
  HOSTCC  scripts/dtc/livetree.o
  HOSTCC  scripts/dtc/treesource.o
  HOSTCC  scripts/dtc/srcpos.o
  HOSTCC  scripts/dtc/checks.o
  HOSTLD  scripts/genksyms/genksyms
  HOSTCC  scripts/dtc/util.o
  SHIPPED scripts/dtc/dtc-lexer.lex.c
  SHIPPED scripts/dtc/dtc-parser.tab.h
  SHIPPED scripts/dtc/dtc-parser.tab.c
  HOSTCC  scripts/dtc/dtc-lexer.lex.o
  HOSTCC  scripts/dtc/dtc-parser.tab.o
  CHK     include/generated/timeconst.h
  CC      kernel/bounds.s
  UPD     include/generated/timeconst.h
  CHK     include/generated/bounds.h
  UPD     include/generated/bounds.h
  CC      arch/powerpc/kernel/asm-offsets.s
  HOSTLD  scripts/mod/modpost
  CHK     include/generated/asm-offsets.h
  UPD     include/generated/asm-offsets.h
  CALL    /home/kisskb/slave/src/scripts/checksyscalls.sh
  HOSTLD  scripts/dtc/dtc
  HOSTCC  usr/gen_init_cpio
  CC      init/main.o
  CHK     include/generated/compile.h
  CC      init/do_mounts.o
  CC      init/do_mounts_rd.o
  CC      init/do_mounts_initrd.o
  CC      init/do_mounts_md.o
  UPD     include/generated/compile.h
  CC      arch/powerpc/mm/fault.o
  AS      arch/powerpc/lib/string.o
  CC      arch/powerpc/sysdev/mpic.o
  CC      arch/powerpc/kernel/cputable.o
  CC      arch/powerpc/lib/alloc.o
  GEN     usr/initramfs_data.cpio.gz
  AS      usr/initramfs_data.o
  LD      usr/built-in.o
  CC      arch/powerpc/kernel/ptrace.o
  CC      arch/powerpc/kernel/syscalls.o
  AS      arch/powerpc/lib/crtsavres.o
  CC      arch/powerpc/lib/code-patching.o
  CC      arch/powerpc/mm/mem.o
  CC      arch/powerpc/mm/pgtable.o
  CC      arch/powerpc/kernel/irq.o
  CC      arch/powerpc/lib/feature-fixups.o
  CC      arch/powerpc/kernel/align.o
  AS      arch/powerpc/lib/checksum_64.o
  CC      init/initramfs.o
  CC      arch/powerpc/mm/mmap.o
  CC      arch/powerpc/lib/checksum_wrappers.o
  CC      init/init_task.o
  CC      arch/powerpc/mm/init_64.o
  CC      arch/powerpc/platforms/cell/cbe_regs.o
  CC      arch/powerpc/lib/sstep.o
  AS      arch/powerpc/lib/ldstfp.o
  CC      arch/powerpc/mm/pgtable_64.o
  CC      arch/powerpc/kernel/signal_32.o
  CC      arch/powerpc/kernel/pmc.o
  CC      arch/powerpc/platforms/cell/interrupt.o
  CC      arch/powerpc/kernel/vdso.o
  CC      arch/powerpc/sysdev/mpic_msi.o
  CC      arch/powerpc/platforms/maple/setup.o
  CC      arch/powerpc/platforms/maple/pci.o
  CC      init/version.o
  CC      arch/powerpc/mm/init-common.o
  LD      init/mounts.o
  LD      init/built-in.o
  CC      arch/powerpc/platforms/maple/time.o
  CC      arch/powerpc/sysdev/mpic_u3msi.o
  CC      arch/powerpc/sysdev/msi_bitmap.o
  CC      arch/powerpc/mm/pgtable-hash64.o
  CC      arch/powerpc/platforms/cell/pervasive.o
  CC      arch/powerpc/platforms/cell/iommu.o
  CC      arch/powerpc/kernel/process.o
  CC      arch/powerpc/platforms/cell/setup.o
  CC      arch/powerpc/platforms/cell/spider-pic.o
  CC      arch/powerpc/mm/hash_utils_64.o
  LD      arch/powerpc/platforms/maple/built-in.o
  AS      arch/powerpc/lib/feature-fixups-test.o
  CC      arch/powerpc/platforms/pasemi/setup.o
  CC      arch/powerpc/platforms/pasemi/pci.o
  CC      arch/powerpc/lib/xor_vmx.o
  CC      arch/powerpc/sysdev/dart_iommu.o
  CC      arch/powerpc/sysdev/mmio_nvram.o
  CC      arch/powerpc/sysdev/i8259.o
  AS      arch/powerpc/lib/copypage_64.o
  CC      arch/powerpc/platforms/pasemi/time.o
  AS      arch/powerpc/lib/copyuser_64.o
  CC      arch/powerpc/platforms/cell/pmu.o
  CC      arch/powerpc/lib/usercopy_64.o
  CPP     arch/powerpc/kernel/systbl_chk.i
  CC      arch/powerpc/platforms/powermac/pic.o
  CC      arch/powerpc/platforms/powermac/setup.o
  CC      arch/powerpc/platforms/powernv/setup.o
  CC      arch/powerpc/platforms/pasemi/idle.o
  AS      arch/powerpc/platforms/powernv/opal-wrappers.o
  AS      arch/powerpc/lib/mem_64.o
  CC      arch/powerpc/sysdev/dcr.o
  AS      arch/powerpc/mm/slb_low.o
  AS      arch/powerpc/lib/hweight_64.o
  CC      arch/powerpc/platforms/ps3/setup.o
  CC      arch/powerpc/mm/slb.o
  CC      arch/powerpc/kernel/idle.o
  AS      arch/powerpc/platforms/pasemi/powersave.o
  AS      arch/powerpc/lib/copyuser_power7.o
  CC      arch/powerpc/platforms/pasemi/iommu.o
  AS      arch/powerpc/lib/string_64.o
  CC      arch/powerpc/sysdev/scom.o
  CC      arch/powerpc/platforms/pseries/lpar.o
  CC      arch/powerpc/platforms/cell/spider-pci.o
  AS      arch/powerpc/lib/copypage_power7.o
  CC      arch/powerpc/platforms/powernv/opal.o
  AS      arch/powerpc/lib/memcpy_power7.o
  AS      arch/powerpc/lib/memcpy_64.o
  CC      arch/powerpc/platforms/powermac/time.o
  CC      arch/powerpc/mm/hash_native_64.o
  CC      arch/powerpc/kernel/signal.o
  AS      arch/powerpc/lib/memcmp_64.o
  CC      arch/powerpc/platforms/pasemi/dma_lib.o
  CC      arch/powerpc/platforms/ps3/mm.o
  CC      arch/powerpc/sysdev/xics/xics-common.o
  CC      arch/powerpc/lib/locks.o
  CC      arch/powerpc/platforms/cell/ras.o
  CC      arch/powerpc/platforms/powermac/feature.o
  CC      arch/powerpc/lib/vmx-helper.o
  CC      arch/powerpc/kernel/sysfs.o
  CC      arch/powerpc/mm/mmu_context_book3s64.o
  AS      arch/powerpc/platforms/pseries/hvCall.o
  CC      arch/powerpc/platforms/powernv/opal-async.o
  CC      arch/powerpc/platforms/pseries/nvram.o
  CC      arch/powerpc/sysdev/xics/icp-native.o
  LD      arch/powerpc/lib/built-in.o
  CC      arch/powerpc/sysdev/xics/icp-hv.o
  CC      arch/powerpc/platforms/cell/smp.o
  CC      arch/powerpc/platforms/pasemi/misc.o
  CC      arch/powerpc/platforms/ps3/time.o
  CC      arch/powerpc/mm/pgtable-book3s64.o
  CC      arch/powerpc/mm/pgtable-radix.o
  CC      arch/powerpc/platforms/pseries/reconfig.o
  CC      arch/powerpc/platforms/pasemi/gpio_mdio.o
  CC      arch/powerpc/platforms/powermac/pci.o
  CC      arch/powerpc/platforms/powernv/idle.o
  AS      arch/powerpc/platforms/ps3/hvcall.o
  CC      arch/powerpc/platforms/cell/spu_callbacks.o
  CC      arch/powerpc/sysdev/xics/ics-rtas.o
  CC      arch/powerpc/platforms/ps3/htab.o
  CC      arch/powerpc/platforms/ps3/repository.o
  CC      arch/powerpc/mm/tlb-radix.o
  CC      arch/powerpc/platforms/pseries/of_helpers.o
  CC      arch/powerpc/kernel/cacheinfo.o
  CC      arch/powerpc/sysdev/xics/ics-opal.o
  CC      arch/powerpc/platforms/pasemi/msi.o
  CC      arch/powerpc/platforms/cell/spu_base.o
  CC      arch/powerpc/mm/tlb_hash64.o
  AS      arch/powerpc/platforms/powermac/sleep.o
  CC      arch/powerpc/platforms/powermac/low_i2c.o
  CC      arch/powerpc/platforms/pseries/setup.o
  CC      arch/powerpc/platforms/ps3/interrupt.o
  CC      arch/powerpc/platforms/powernv/opal-rtc.o
  CC      arch/powerpc/sysdev/xics/icp-opal.o
  CC      arch/powerpc/kernel/time.o
  LD      arch/powerpc/platforms/pasemi/built-in.o
  CC      arch/powerpc/kernel/prom.o
  CC      arch/powerpc/platforms/ps3/exports.o
  CC      arch/powerpc/mm/hash64_4k.o
  CC      arch/powerpc/platforms/ps3/os-area.o
  CC      arch/powerpc/platforms/powernv/opal-nvram.o
  LD      arch/powerpc/sysdev/xics/built-in.o
  CC [M]  arch/powerpc/sysdev/pmi.o
  CC      arch/powerpc/platforms/cell/spu_notify.o
  CC      arch/powerpc/platforms/cell/spu_syscalls.o
  CC      arch/powerpc/mm/numa.o
  CC      arch/powerpc/platforms/pseries/iommu.o
  CC      arch/powerpc/platforms/powernv/opal-lpc.o
  CC      arch/powerpc/platforms/pseries/event_sources.o
  CC [M]  arch/powerpc/sysdev/axonram.o
  CC      arch/powerpc/platforms/pseries/ras.o
  AS      arch/powerpc/platforms/powermac/cache.o
  CC      arch/powerpc/platforms/powermac/pfunc_core.o
  CC      arch/powerpc/platforms/ps3/system-bus.o
  CC      arch/powerpc/kernel/traps.o
  CC      arch/powerpc/platforms/ps3/smp.o
  CC      arch/powerpc/platforms/powernv/opal-flash.o
  CC      arch/powerpc/platforms/cell/spu_priv1_mmio.o
  CC      arch/powerpc/mm/vphn.o
  LD      arch/powerpc/sysdev/built-in.o
  CC      arch/powerpc/platforms/powermac/pfunc_base.o
  CC      arch/powerpc/kernel/setup-common.o
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  CC      arch/powerpc/platforms/pseries/power.o
  CC      arch/powerpc/platforms/powernv/rng.o
  CC      arch/powerpc/mm/slice.o
  CC      arch/powerpc/platforms/cell/spu_manage.o
  LD      arch/powerpc/platforms/cell/spufs/built-in.o
  CC [M]  arch/powerpc/platforms/cell/spufs/inode.o
  CC      arch/powerpc/platforms/ps3/spu.o
  CC      arch/powerpc/platforms/pseries/dlpar.o
  CC      arch/powerpc/platforms/ps3/device-init.o
  CC      arch/powerpc/platforms/powermac/udbg_scc.o
  CC      arch/powerpc/platforms/powermac/udbg_adb.o
  CC      arch/powerpc/platforms/powernv/opal-elog.o
  CC [M]  arch/powerpc/platforms/cell/spufs/file.o
  CC [M]  arch/powerpc/platforms/cell/spufs/context.o
  CC      arch/powerpc/platforms/pseries/mobility.o
  CC      arch/powerpc/kernel/udbg.o
  AS      arch/powerpc/kernel/misc.o
  CC      arch/powerpc/mm/hugetlbpage.o
  CC      arch/powerpc/platforms/powermac/nvram.o
  LD      arch/powerpc/platforms/ps3/built-in.o
  CC      arch/powerpc/platforms/powernv/opal-dump.o
  CC      arch/powerpc/platforms/powermac/smp.o
  LD      arch/powerpc/math-emu/built-in.o
  CC      arch/powerpc/kernel/io.o
  LD      arch/powerpc/crypto/built-in.o
  AS [M]  arch/powerpc/crypto/md5-asm.o
  AS      arch/powerpc/net/bpf_jit_asm64.o
  CC [M]  arch/powerpc/crypto/md5-glue.o
  CC      arch/powerpc/net/bpf_jit_comp64.o
  AS [M]  arch/powerpc/crypto/sha1-powerpc-asm.o
  CC      arch/powerpc/platforms/powernv/opal-sysparam.o
  CC      arch/powerpc/platforms/pseries/rng.o
  CC      arch/powerpc/kernel/dma.o
  CC      arch/powerpc/mm/hugetlbpage-hash64.o
  CC      arch/powerpc/mm/hugetlbpage-radix.o
  CC [M]  arch/powerpc/crypto/sha1.o
  CC      arch/powerpc/platforms/powernv/opal-sensor.o
  CC      arch/powerpc/platforms/pseries/pci.o
  LD      arch/powerpc/platforms/powermac/built-in.o
  AS [M]  arch/powerpc/crypto/crc32c-vpmsum_asm.o
  CC      arch/powerpc/mm/copro_fault.o
  CC      arch/powerpc/platforms/pseries/pci_dlpar.o
  CC      arch/powerpc/platforms/pseries/eeh_pseries.o
  CC      arch/powerpc/platforms/pseries/msi.o
  CC [M]  arch/powerpc/crypto/crc32c-vpmsum_glue.o
  CC [M]  arch/powerpc/platforms/cell/spufs/syscalls.o
  CC      arch/powerpc/platforms/powernv/opal-msglog.o
  CC [M]  arch/powerpc/platforms/cell/spufs/sched.o
  AS      arch/powerpc/kernel/misc_64.o
  LD      arch/powerpc/mm/built-in.o
  CC      arch/powerpc/kernel/of_platform.o
  LD [M]  arch/powerpc/crypto/md5-ppc.o
  LD [M]  arch/powerpc/crypto/sha1-powerpc.o
  LD [M]  arch/powerpc/crypto/crc32c-vpmsum.o
  CC      arch/powerpc/kernel/prom_parse.o
  CC      arch/powerpc/platforms/cell/axon_msi.o
  CC [M]  arch/powerpc/platforms/cell/cbe_thermal.o
  CC [M]  arch/powerpc/platforms/cell/cpufreq_spudemand.o
  CC      arch/powerpc/platforms/powernv/opal-hmi.o
  CC [M]  arch/powerpc/platforms/cell/cbe_powerbutton.o
  CC      arch/powerpc/platforms/pseries/smp.o
  LD      arch/powerpc/net/built-in.o
  CC      arch/powerpc/kernel/setup_64.o
  CC      arch/powerpc/platforms/powernv/opal-power.o
  CC      arch/powerpc/platforms/pseries/kexec.o
  CC      arch/powerpc/platforms/pseries/pseries_energy.o
  CC      arch/powerpc/platforms/powernv/opal-irqchip.o
  CC      arch/powerpc/xmon/xmon.o
  CC      arch/powerpc/platforms/pseries/hotplug-cpu.o
  CC      arch/powerpc/platforms/pseries/hvconsole.o
  CC      arch/powerpc/kvm/book3s_exports.o
  CC      arch/powerpc/platforms/pseries/cmm.o
  CC      arch/powerpc/xmon/nonstdio.o
  CC [M]  arch/powerpc/platforms/cell/spufs/backing_ops.o
  CC [M]  arch/powerpc/platforms/cell/spufs/hw_ops.o
  CC      arch/powerpc/kernel/sys_ppc32.o
  AS      arch/powerpc/xmon/spr_access.o
  CC      arch/powerpc/platforms/pseries/dtl.o
  CC      arch/powerpc/kvm/book3s_64_vio_hv.o
  CC      arch/powerpc/platforms/pseries/io_event_irq.o
  CC      arch/powerpc/platforms/powernv/opal-kmsg.o
  CC      arch/powerpc/platforms/pseries/lparcfg.o
  CC      arch/powerpc/platforms/pseries/vio.o
  CC      arch/powerpc/kernel/signal_64.o
  CC [M]  arch/powerpc/platforms/cell/spufs/run.o
  CC      arch/powerpc/perf/callchain.o
  CC      arch/powerpc/platforms/powernv/smp.o
  AS      arch/powerpc/purgatory/trampoline.o
  LD      arch/powerpc/purgatory/purgatory.ro
  BIN2C   arch/powerpc/purgatory/kexec-purgatory.c
  CC      arch/powerpc/purgatory/kexec-purgatory.o
  LD      arch/powerpc/purgatory/built-in.o
  CC      kernel/fork.o
  CC      kernel/exec_domain.o
  CC      arch/powerpc/kernel/ptrace32.o
  CC      arch/powerpc/kernel/paca.o
  CC [M]  arch/powerpc/platforms/cell/spufs/gang.o
  CC      arch/powerpc/perf/perf_regs.o
  CC      arch/powerpc/platforms/powernv/subcore.o
  CC      arch/powerpc/kvm/book3s_hv_hmi.o
  AS      arch/powerpc/kvm/book3s_hv_rmhandlers.o
  CC      arch/powerpc/kvm/book3s_hv_rm_mmu.o
  AS      arch/powerpc/platforms/powernv/subcore-asm.o
  CC      arch/powerpc/platforms/pseries/ibmebus.o
  CC      arch/powerpc/platforms/pseries/suspend.o
  SHIPPED arch/powerpc/platforms/cell/spufs/spu_save_dump.h
  SHIPPED arch/powerpc/platforms/cell/spufs/spu_restore_dump.h
  CC [M]  arch/powerpc/platforms/cell/spufs/fault.o
  CC      arch/powerpc/perf/core-book3s.o
  CC      arch/powerpc/kernel/nvram_64.o
  CC      arch/powerpc/kernel/firmware.o
  AS      arch/powerpc/perf/bhrb.o
  CC      arch/powerpc/platforms/powernv/pci.o
  CC      arch/powerpc/xmon/ppc-dis.o
  CC [M]  arch/powerpc/platforms/cell/spufs/lscsa_alloc.o
  CC      arch/powerpc/xmon/ppc-opc.o
  CC      arch/powerpc/perf/hv-24x7.o
  CC [M]  arch/powerpc/platforms/pseries/scanlog.o
  CC      arch/powerpc/xmon/spu-dis.o
  CC [M]  arch/powerpc/platforms/cell/spufs/coredump.o
  LDS     arch/powerpc/kernel/vdso32/vdso32.lds
  VDSO32A arch/powerpc/kernel/vdso32/sigtramp.o
  LDS     arch/powerpc/kernel/vdso64/vdso64.lds
  AS      arch/powerpc/kernel/vdso64/sigtramp.o
  VDSO32A arch/powerpc/kernel/vdso32/gettimeofday.o
  AS      arch/powerpc/kernel/vdso64/gettimeofday.o
  VDSO32A arch/powerpc/kernel/vdso32/datapage.o
  AS      arch/powerpc/kernel/vdso64/datapage.o
  VDSO32A arch/powerpc/kernel/vdso32/cacheflush.o
  VDSO32A arch/powerpc/kernel/vdso32/note.o
  AS      arch/powerpc/kernel/vdso64/cacheflush.o
  VDSO32A arch/powerpc/kernel/vdso32/getcpu.o
  AS      arch/powerpc/kernel/vdso64/note.o
  CC [M]  arch/powerpc/platforms/pseries/hvcserver.o
  VDSO32L arch/powerpc/kernel/vdso32/vdso32.so.dbg
  AS      arch/powerpc/kernel/vdso64/getcpu.o
  OBJCOPY arch/powerpc/kernel/vdso32/vdso32.so
  AS      arch/powerpc/kernel/vdso32/vdso32_wrapper.o
  VDSO64L arch/powerpc/kernel/vdso64/vdso64.so.dbg
  OBJCOPY arch/powerpc/kernel/vdso64/vdso64.so
  AS      arch/powerpc/kernel/vdso64/vdso64_wrapper.o
  LD      arch/powerpc/kernel/vdso32/built-in.o
  CC      arch/powerpc/platforms/powernv/pci-ioda.o
  LD      arch/powerpc/kernel/vdso64/built-in.o
  CC      arch/powerpc/kvm/book3s_hv_ras.o
  CC      arch/powerpc/kernel/hw_breakpoint.o
  LD      arch/powerpc/platforms/pseries/built-in.o
  CC      arch/powerpc/xmon/spu-opc.o
  CC [M]  arch/powerpc/platforms/cell/spufs/switch.o
  AS      arch/powerpc/kernel/cpu_setup_ppc970.o
  CC      arch/powerpc/perf/hv-gpci.o
  CC      arch/powerpc/perf/hv-common.o
  CC      kernel/panic.o
  CC      kernel/cpu.o
  AS      arch/powerpc/kernel/cpu_setup_pa6t.o
  AS      arch/powerpc/kernel/cpu_setup_power.o
  CC      arch/powerpc/kernel/mce.o
  LD      certs/built-in.o
  CC      arch/powerpc/kvm/book3s_hv_builtin.o
  CC      arch/powerpc/platforms/powernv/npu-dma.o
  CC      arch/powerpc/platforms/powernv/pci-cxl.o
  LD      arch/powerpc/xmon/built-in.o
  CC      arch/powerpc/kvm/book3s_hv_rm_xics.o
  CC      arch/powerpc/perf/power4-pmu.o
  CC      arch/powerpc/kernel/mce_power.o
  CC      arch/powerpc/perf/ppc970-pmu.o
  CC      arch/powerpc/kernel/vecemu.o
  AS      arch/powerpc/kernel/idle_power4.o
  CC      arch/powerpc/platforms/powernv/eeh-powernv.o
  CC      arch/powerpc/perf/power5-pmu.o
  CC      arch/powerpc/perf/power5+-pmu.o
  CC      arch/powerpc/platforms/powernv/opal-xscom.o
  LD [M]  arch/powerpc/platforms/cell/spufs/spufs.o
  AS      arch/powerpc/kernel/idle_book3s.o
  LD      arch/powerpc/platforms/cell/built-in.o
  CC      arch/powerpc/platforms/powernv/opal-tracepoints.o
/home/kisskb/slave/src/arch/powerpc/kernel/idle_book3s.S: Assembler messages:
/home/kisskb/slave/src/arch/powerpc/kernel/idle_book3s.S:446: Error: invalid operands (*UND* and *UND* sections) for `-'
/home/kisskb/slave/src/arch/powerpc/kernel/idle_book3s.S:446: Error: invalid operands (*UND* and *UND* sections) for `-'
/home/kisskb/slave/src/scripts/Makefile.build:395: recipe for target 'arch/powerpc/kernel/idle_book3s.o' failed
make[2]: *** [arch/powerpc/kernel/idle_book3s.o] Error 1
/home/kisskb/slave/src/Makefile:1002: recipe for target 'arch/powerpc/kernel' failed
make[1]: *** [arch/powerpc/kernel] Error 2
make[1]: *** Waiting for unfinished jobs....
  CC [M]  arch/powerpc/kvm/../../../virt/kvm/kvm_main.o
  CC [M]  arch/powerpc/kvm/../../../virt/kvm/eventfd.o
  CC [M]  arch/powerpc/kvm/../../../virt/kvm/vfio.o
  CC      kernel/exit.o
  CC      kernel/softirq.o
  CC [M]  arch/powerpc/kvm/powerpc.o
  CC      arch/powerpc/perf/power6-pmu.o
  CC      arch/powerpc/perf/power7-pmu.o
  CC      arch/powerpc/perf/isa207-common.o
  LD      arch/powerpc/platforms/powernv/built-in.o
  LD      arch/powerpc/platforms/built-in.o
  CC      kernel/resource.o
  CC [M]  arch/powerpc/kvm/emulate_loadstore.o
  CC [M]  arch/powerpc/kvm/book3s.o
  CC      arch/powerpc/perf/power8-pmu.o
  CC      arch/powerpc/perf/power9-pmu.o
  CC [M]  arch/powerpc/kvm/book3s_64_vio.o
  CC      kernel/sysctl.o
  CC      kernel/sysctl_binary.o
  CC [M]  arch/powerpc/kvm/book3s_rtas.o
  LD      arch/powerpc/perf/built-in.o
  CC      kernel/capability.o
  CC [M]  arch/powerpc/kvm/book3s_xics.o
  CC      kernel/ptrace.o
  CC [M]  arch/powerpc/kvm/book3s_hv.o
  CC      kernel/user.o
  AS [M]  arch/powerpc/kvm/book3s_hv_interrupts.o
  CC      kernel/signal.o
  CC [M]  arch/powerpc/kvm/book3s_64_mmu_hv.o
  CC [M]  arch/powerpc/kvm/book3s_64_mmu_radix.o
  CC      kernel/sys.o
  CC      kernel/kmod.o
  CC      kernel/workqueue.o
  LD      arch/powerpc/kvm/built-in.o
  CC      kernel/pid.o
  CC      kernel/task_work.o
  CC      kernel/extable.o
  CC      kernel/params.o
  CC      kernel/kthread.o
  LD [M]  arch/powerpc/kvm/kvm.o
  CC      kernel/sys_ni.o
  CC      kernel/nsproxy.o
  CC      kernel/notifier.o
  CC      kernel/ksysfs.o
  CC      kernel/cred.o
  CC      kernel/reboot.o
  CC      kernel/async.o
  CC      kernel/range.o
  CC      kernel/smpboot.o
  CC      kernel/ucount.o
  CC      kernel/groups.o
  CC      kernel/bpf/core.o
  CC      kernel/cgroup/cgroup.o
  CC      kernel/bpf/syscall.o
  LD [M]  arch/powerpc/kvm/kvm-hv.o
  CC      kernel/bpf/verifier.o
  CC      kernel/bpf/inode.o
  CC      kernel/events/core.o
  CC      kernel/irq/irqdesc.o
  LD      kernel/livepatch/built-in.o
  CC      kernel/locking/mutex.o
  CC      kernel/power/qos.o
  CC      kernel/bpf/helpers.o
  CC      kernel/irq/handle.o
  CC      kernel/power/main.o
  CC      kernel/bpf/hashtab.o
  CC      kernel/locking/semaphore.o
  CC      kernel/bpf/arraymap.o
  CC      kernel/bpf/percpu_freelist.o
  CC      kernel/irq/manage.o
  CC      kernel/irq/spurious.o
  CC      kernel/power/console.o
  CC      kernel/power/process.o
  CC      kernel/locking/rwsem.o
  CC      kernel/cgroup/namespace.o
  CC      kernel/cgroup/cgroup-v1.o
  CC      kernel/irq/resend.o
  CC      kernel/locking/percpu-rwsem.o
  CC      kernel/irq/chip.o
  CC      kernel/power/suspend.o
  CC      kernel/irq/dummychip.o
  CC      kernel/locking/mutex-debug.o
  CC      kernel/irq/devres.o
  CC      kernel/bpf/bpf_lru_list.o
  CC      kernel/printk/printk.o
  CC      kernel/printk/printk_safe.o
  CC      kernel/bpf/lpm_trie.o
/home/kisskb/slave/src/kernel/cgroup/cgroup-v1.c: In function 'cgroup1_mount':
/home/kisskb/slave/src/kernel/cgroup/cgroup-v1.c:1200:9: warning: 'root' may be used uninitialized in this function [-Wuninitialized]
  CC      kernel/bpf/stackmap.o
  CC      kernel/locking/spinlock.o
  CC      kernel/bpf/cgroup.o
  CC      kernel/power/poweroff.o
  CC      kernel/cgroup/cpuset.o
  CC      kernel/irq/irqdomain.o
  CC      kernel/locking/osq_lock.o
  LD      kernel/power/built-in.o
  CC      kernel/irq/proc.o
  CC      kernel/locking/rtmutex.o
  CC      kernel/locking/rwsem-xadd.o
  CC      kernel/events/ring_buffer.o
  CC      kernel/events/callchain.o
/home/kisskb/slave/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/home/kisskb/slave/src/kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
  LD      kernel/bpf/built-in.o
  CC      kernel/irq/pm.o
  CC      kernel/events/hw_breakpoint.o
  CC      kernel/irq/msi.o
  CC      kernel/rcu/update.o
  CC      kernel/rcu/sync.o
  LD      kernel/locking/built-in.o
  CC      kernel/rcu/srcu.o
  CC      kernel/sched/core.o
  CC      kernel/irq/affinity.o
  CC      kernel/sched/loadavg.o
  LD      kernel/printk/built-in.o
  CC      kernel/rcu/tree.o
  CC      kernel/rcu/tree_trace.o
  LD      kernel/cgroup/built-in.o
  CC      kernel/time/time.o
  CC      kernel/trace/trace_clock.o
  CC      kernel/trace/ring_buffer.o
  LD      kernel/events/built-in.o
  LD      kernel/irq/built-in.o
  CC      kernel/freezer.o
  CC      kernel/profile.o
  CC      kernel/time/timer.o
  CC      kernel/time/hrtimer.o
  CC      kernel/time/timekeeping.o
  CC      kernel/sched/clock.o
  CC      kernel/sched/cputime.o
  CC      kernel/sched/idle_task.o
  CC      kernel/sched/fair.o
  CC      kernel/stacktrace.o
  CC      kernel/futex.o
  CC      kernel/trace/trace.o
  CC      kernel/trace/trace_output.o
  CC      kernel/trace/trace_seq.o
  CC      kernel/trace/trace_stat.o
  CC      kernel/time/ntp.o
  CC      kernel/futex_compat.o
  CC      kernel/time/clocksource.o
  CC      kernel/sched/rt.o
  CC      kernel/sched/deadline.o
  CC      kernel/dma.o
  LD      kernel/rcu/built-in.o
  CC      kernel/trace/trace_printk.o
  CC      kernel/time/jiffies.o
  CC      kernel/trace/trace_sched_switch.o
  CC      kernel/smp.o
  CC      kernel/time/timer_list.o
  CC      kernel/time/timeconv.o
  CC      kernel/time/timecounter.o
  CC      kernel/sched/stop_task.o
  CC      kernel/module.o
  CC      kernel/kallsyms.o
  CC      kernel/kexec_core.o
  CC      kernel/kexec.o
  CC      kernel/sched/wait.o
  CC      kernel/trace/trace_sched_wakeup.o
  CC      kernel/time/alarmtimer.o
  CC      kernel/kexec_file.o
  CC      kernel/time/posix-timers.o
  CC      kernel/sched/swait.o
  CC      kernel/sched/completion.o
  CC      kernel/time/posix-cpu-timers.o
  CC      kernel/time/posix-clock.o
  CC      kernel/compat.o
  CC      kernel/time/itimer.o
  CC      kernel/time/clockevents.o
  CC      kernel/utsname.o
  CC      kernel/sched/idle.o
  CC      kernel/trace/trace_nop.o
  CC      kernel/trace/blktrace.o
  CC      kernel/sched/cpupri.o
  CC      kernel/sched/cpudeadline.o
  CC      kernel/sched/topology.o
  CC      kernel/pid_namespace.o
  GZIP    kernel/config_data.gz
  CC      kernel/stop_machine.o
  CC      kernel/time/tick-common.o
  CC      kernel/sched/stats.o
  CC      kernel/trace/trace_events.o
  CC      kernel/trace/trace_export.o
  CC      kernel/trace/trace_event_perf.o
  CC      kernel/trace/trace_events_filter.o
  CC      kernel/trace/trace_events_trigger.o
  CC      kernel/trace/bpf_trace.o
  CC      kernel/kprobes.o
  CC      kernel/hung_task.o
  CC      kernel/sched/debug.o
  CC      kernel/time/tick-broadcast.o
  CC      kernel/trace/trace_kprobe.o
  CC      kernel/watchdog.o
  CC      kernel/time/tick-broadcast-hrtimer.o
  CC      kernel/time/tick-oneshot.o
  CC      kernel/sched/cpufreq.o
  CC      kernel/trace/power-traces.o
  CC      kernel/watchdog_hld.o
  CC      kernel/seccomp.o
  CC      kernel/time/tick-sched.o
  CC      kernel/time/timekeeping_debug.o
  CC      kernel/relay.o
  CC      kernel/trace/rpm-traces.o
  LD      kernel/sched/built-in.o
  CC      kernel/trace/trace_probe.o
  CC      kernel/utsname_sysctl.o
  CC      kernel/delayacct.o
  CC      kernel/taskstats.o
  CC      kernel/tsacct.o
  CC      kernel/tracepoint.o
  CC      kernel/latencytop.o
  LD      kernel/time/built-in.o
  CC      kernel/elfcore.o
  CC      kernel/irq_work.o
  CC      kernel/crash_dump.o
  CC      kernel/jump_label.o
  CC      kernel/membarrier.o
  CC      kernel/memremap.o
  CHK     kernel/config_data.h
  UPD     kernel/config_data.h
  CC      kernel/configs.o
  LD      kernel/trace/built-in.o
  LD      kernel/built-in.o
make[1]: Leaving directory '/home/kisskb/slave/build/powerpc-next_ppc64_defconfig+NO_TM_powerpc'
Makefile:152: recipe for target 'sub-make' failed
make: *** [sub-make] Error 2
Command 'make -j 10 ARCH=powerpc O=/home/kisskb/slave/build/powerpc-next_ppc64_defconfig+NO_TM_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  ' returned non-zero exit status 2
# rm -rf /home/kisskb/slave/build/powerpc-next_ppc64_defconfig+NO_TM_powerpc
# Build took: 0:00:37.560715