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    SubjectRe: [PATCH 0/5] [GIT PULL] updates for tip/tracing/ftrace

    found another, unrelated lockup with the event tracer:

    europe:/debug/tracing/events/sched/sched_wakeup_new> cat enable
    0
    europe:/debug/tracing/events/sched/sched_wakeup_new> echo 1 > enable
    europe:/debug/tracing/events/sched/sched_wakeup_new> sync
    europe:/debug/tracing/events/sched/sched_wakeup_new> cat
    ../../../trace_pipe
    <...>-2870 [000] 688.730160: sched_wakeup_new: task
    bash:2898 [120] success=1
    <...>-2870 [001] 689.945375: sched_wakeup_new: task
    bash:2899 [120] success=1

    [hard lockup]

    The .config bits that matter er the Kernel hacking and Tracer
    portions - i plugged those bits into a 64-bit system as well and it
    insta-locked similarly. See them below. Put the sections below into
    your usual .config and you'll likely see the same lockup.

    Ingo

    #
    # Kernel hacking
    #
    CONFIG_TRACE_IRQFLAGS_SUPPORT=y
    # CONFIG_PRINTK_TIME is not set
    CONFIG_ALLOW_WARNINGS=y
    CONFIG_ENABLE_WARN_DEPRECATED=y
    # CONFIG_ENABLE_MUST_CHECK is not set
    CONFIG_FRAME_WARN=2048
    CONFIG_MAGIC_SYSRQ=y
    # CONFIG_UNUSED_SYMBOLS is not set
    CONFIG_DEBUG_FS=y
    # CONFIG_HEADERS_CHECK is not set
    # CONFIG_DEBUG_SECTION_MISMATCH is not set
    CONFIG_DEBUG_KERNEL=y
    # CONFIG_DEBUG_SHIRQ is not set
    # CONFIG_DETECT_SOFTLOCKUP is not set
    CONFIG_DETECT_HUNG_TASK=y
    # CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set
    CONFIG_BOOTPARAM_HUNG_TASK_PANIC_VALUE=0
    CONFIG_SCHED_DEBUG=y
    CONFIG_SCHEDSTATS=y
    # CONFIG_TIMER_STATS is not set
    # CONFIG_DEBUG_OBJECTS is not set
    # CONFIG_SLUB_DEBUG_ON is not set
    # CONFIG_SLUB_STATS is not set
    # CONFIG_DEBUG_RT_MUTEXES is not set
    CONFIG_RT_MUTEX_TESTER=y
    # CONFIG_DEBUG_SPINLOCK is not set
    # CONFIG_DEBUG_MUTEXES is not set
    # CONFIG_DEBUG_LOCK_ALLOC is not set
    # CONFIG_PROVE_LOCKING is not set
    # CONFIG_LOCK_STAT is not set
    CONFIG_TRACE_IRQFLAGS=y
    # CONFIG_DEBUG_SPINLOCK_SLEEP is not set
    # CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
    CONFIG_STACKTRACE=y
    CONFIG_DEBUG_BUGVERBOSE=y
    # CONFIG_DEBUG_VM is not set
    # CONFIG_DEBUG_VIRTUAL is not set
    # CONFIG_DEBUG_WRITECOUNT is not set
    CONFIG_DEBUG_MEMORY_INIT=y
    # CONFIG_DEBUG_LIST is not set
    # CONFIG_DEBUG_SG is not set
    # CONFIG_DEBUG_NOTIFIERS is not set
    CONFIG_ARCH_WANT_FRAME_POINTERS=y
    CONFIG_FRAME_POINTER=y
    # CONFIG_BOOT_PRINTK_DELAY is not set
    # CONFIG_RCU_TORTURE_TEST is not set
    # CONFIG_RCU_CPU_STALL_DETECTOR is not set
    # CONFIG_KPROBES_SANITY_TEST is not set
    # CONFIG_BACKTRACE_SELF_TEST is not set
    # CONFIG_LKDTM is not set
    # CONFIG_FAULT_INJECTION is not set
    # CONFIG_LATENCYTOP is not set
    CONFIG_SYSCTL_SYSCALL_CHECK=y
    CONFIG_USER_STACKTRACE_SUPPORT=y
    CONFIG_NOP_TRACER=y
    CONFIG_HAVE_FTRACE_NMI_ENTER=y
    CONFIG_HAVE_FUNCTION_TRACER=y
    CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
    CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST=y
    CONFIG_HAVE_DYNAMIC_FTRACE=y
    CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
    CONFIG_HAVE_HW_BRANCH_TRACER=y
    CONFIG_HAVE_FTRACE_SYSCALLS=y
    CONFIG_TRACER_MAX_TRACE=y
    CONFIG_RING_BUFFER=y
    CONFIG_FTRACE_NMI_ENTER=y
    CONFIG_TRACING=y
    CONFIG_TRACING_SUPPORT=y

    #
    # Tracers
    #
    CONFIG_FUNCTION_TRACER=y
    CONFIG_FUNCTION_GRAPH_TRACER=y
    CONFIG_IRQSOFF_TRACER=y
    CONFIG_SYSPROF_TRACER=y
    CONFIG_SCHED_TRACER=y
    CONFIG_CONTEXT_SWITCH_TRACER=y
    CONFIG_EVENT_TRACER=y
    CONFIG_FTRACE_SYSCALLS=y
    CONFIG_BOOT_TRACER=y
    CONFIG_POWER_TRACER=y
    CONFIG_STACK_TRACER=y
    CONFIG_HW_BRANCH_TRACER=y
    CONFIG_KMEMTRACE=y
    # CONFIG_WORKQUEUE_TRACER is not set
    CONFIG_BLK_DEV_IO_TRACE=y
    CONFIG_DYNAMIC_FTRACE=y
    CONFIG_FTRACE_MCOUNT_RECORD=y
    # CONFIG_FTRACE_STARTUP_TEST is not set
    CONFIG_MMIOTRACE=y
    # CONFIG_MMIOTRACE_TEST is not set
    # CONFIG_PROVIDE_OHCI1394_DMA_INIT is not set
    # CONFIG_DYNAMIC_PRINTK_DEBUG is not set
    # CONFIG_SAMPLES is not set
    CONFIG_HAVE_ARCH_KGDB=y
    # CONFIG_KGDB is not set
    CONFIG_HAVE_ARCH_KMEMCHECK=y
    # CONFIG_STRICT_DEVMEM is not set
    CONFIG_X86_VERBOSE_BOOTUP=y
    CONFIG_EARLY_PRINTK=y
    # CONFIG_EARLY_PRINTK_DBGP is not set
    # CONFIG_DEBUG_STACKOVERFLOW is not set
    # CONFIG_DEBUG_STACK_USAGE is not set
    # CONFIG_DEBUG_PAGEALLOC is not set
    # CONFIG_DEBUG_PER_CPU_MAPS is not set
    # CONFIG_X86_PTDUMP is not set
    CONFIG_DEBUG_RODATA=y
    # CONFIG_DEBUG_RODATA_TEST is not set
    # CONFIG_DEBUG_NX_TEST is not set
    # CONFIG_IOMMU_DEBUG is not set
    CONFIG_HAVE_MMIOTRACE_SUPPORT=y
    CONFIG_IO_DELAY_TYPE_0X80=0
    CONFIG_IO_DELAY_TYPE_0XED=1
    CONFIG_IO_DELAY_TYPE_UDELAY=2
    CONFIG_IO_DELAY_TYPE_NONE=3
    CONFIG_IO_DELAY_0X80=y
    # CONFIG_IO_DELAY_0XED is not set
    # CONFIG_IO_DELAY_UDELAY is not set
    # CONFIG_IO_DELAY_NONE is not set
    CONFIG_DEFAULT_IO_DELAY_TYPE=0
    # CONFIG_DEBUG_BOOT_PARAMS is not set
    # CONFIG_CPA_DEBUG is not set
    # CONFIG_OPTIMIZE_INLINING is not set



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      Last update: 2009-03-22 20:45    [W:0.027 / U:1.396 seconds]
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