preemption latency trace v1.0.6 on 2.6.9-rc1-bk12-VP-R6
--------------------------------------------------
 latency: 4012 us, entries: 36 (36)  [VP:1 KP:1 SP:1 HP:1 #CPUS:1]
    -----------------
    | task: dt/5852, uid:0 nice:0 policy:0 rt_prio:0
    -----------------
 => started at: do_IRQ+0x19/0x1a0
 => ended at:   do_IRQ+0x14d/0x1a0
=======>
00010000 0.000ms (+0.000ms): do_IRQ (common_interrupt)
00010000 0.000ms (+0.000ms): do_IRQ (<08050ad4>)
00010000 0.000ms (+0.000ms): do_IRQ (<00000000>)
00010001 0.000ms (+0.002ms): mask_and_ack_8259A (do_IRQ)
00010001 0.003ms (+0.000ms): generic_redirect_hardirq (do_IRQ)
00010000 0.003ms (+0.000ms): generic_handle_IRQ_event (do_IRQ)
00010000 0.004ms (+0.000ms): timer_interrupt (generic_handle_IRQ_event)
00010001 0.004ms (+3.993ms): mark_offset_tsc (timer_interrupt)
00010001 3.998ms (+0.000ms): do_timer (timer_interrupt)
00010001 3.999ms (+0.000ms): update_process_times (do_timer)
00010001 3.999ms (+0.000ms): update_one_process (update_process_times)
00010001 3.999ms (+0.000ms): run_local_timers (update_process_times)
00010001 4.000ms (+0.000ms): raise_softirq (update_process_times)
00010001 4.000ms (+0.000ms): scheduler_tick (update_process_times)
00010001 4.000ms (+0.001ms): sched_clock (scheduler_tick)
00010001 4.002ms (+0.000ms): update_wall_time (do_timer)
00010001 4.002ms (+0.000ms): update_wall_time_one_tick (update_wall_time)
00010001 4.003ms (+0.000ms): profile_tick (timer_interrupt)
00010001 4.003ms (+0.000ms): profile_hook (profile_tick)
00010002 4.004ms (+0.001ms): notifier_call_chain (profile_hook)
00010001 4.005ms (+0.000ms): generic_note_interrupt (do_IRQ)
00010001 4.005ms (+0.000ms): end_8259A_irq (do_IRQ)
00010001 4.006ms (+0.001ms): enable_8259A_irq (do_IRQ)
00000001 4.007ms (+0.000ms): do_softirq (do_IRQ)
00000001 4.007ms (+0.000ms): __do_softirq (do_softirq)
00000001 4.008ms (+0.000ms): wake_up_process (do_softirq)
00000001 4.008ms (+0.000ms): try_to_wake_up (wake_up_process)
00000001 4.009ms (+0.000ms): task_rq_lock (try_to_wake_up)
00000002 4.009ms (+0.000ms): activate_task (try_to_wake_up)
00000002 4.009ms (+0.000ms): sched_clock (activate_task)
00000002 4.010ms (+0.000ms): recalc_task_prio (activate_task)
00000002 4.010ms (+0.000ms): effective_prio (recalc_task_prio)
00000002 4.011ms (+0.000ms): enqueue_task (activate_task)
00000001 4.011ms (+0.000ms): preempt_schedule (try_to_wake_up)
00000001 4.012ms (+0.000ms): sub_preempt_count (do_IRQ)
00000001 4.013ms (+0.000ms): update_max_trace (check_preempt_timing)