Messages in this thread | | | Date | Sun, 22 Mar 2009 20:41:53 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH 0/5] [GIT PULL] updates for tip/tracing/ftrace |
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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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