Hi, Using RT-patch with linux-3.14.2 on mx28, I am getting very high latencies with a unloaded system. Note, I do not know if they were reasonable with earlier releases. Running cyclictest without RT gives ~350 us max latency. On one of the instances, I got the ftrace output as below, I redirect to /dev/null, so the prints itself do not affect results. root@freescale ~$ ./cyclictest -t1 -p 80 -n -i 10000 -l 10000 -m -W -b 3000 > /de v/null INFO: debugfs mountpoint: /sys/kernel/debug/tracing/ root@XL850-0 ~$ cat /sys/kernel/debug/tracing/trace # tracer: wakeup_rt # # wakeup_rt latency trace v1.1.5 on 3.14.2-rt3 # -------------------------------------------------------------------- # latency: 2700 us, #314/314, CPU#0 | (M:preempt VP:0, KP:0, SP:0 HP:0) # ----------------- # | task: cyclictest-1317 (uid:0 nice:0 policy:1 rt_prio:80) # ----------------- # # _--------=> CPU# # / _-------=> irqs-off # | / _------=> need-resched # || / _-----=> need-resched_lazy # ||| / _----=> hardirq/softirq # |||| / _---=> preempt-depth # ||||| / _--=> preempt-lazy-depth # |||||| / _-=> migrate-disable # ||||||| / delay # cmd pid |||||||| time | caller # \ / |||||||| \ | / <idle>-0 0dn.h4.. 10us+: 0:120:R + [000] 1317: 19:S cyclictest <idle>-0 0dn.h4.. 33us+: 0 <idle>-0 0dn.h4.. 47us+: _raw_spin_unlock <-try_to_wake_up <idle>-0 0dn.h4.. 56us+: do_raw_spin_unlock <-_raw_spin_unlock <idle>-0 0dn.h4.. 63us+: preempt_count_sub <-_raw_spin_unlock <idle>-0 0dn.h3.. 71us+: _raw_spin_unlock_irqrestore <-try_to_wake_up <idle>-0 0dn.h3.. 78us+: do_raw_spin_unlock <-_raw_spin_unlock_irqrestore <idle>-0 0dn.h3.. 85us+: preempt_count_sub <-_raw_spin_unlock_irqrestore <idle>-0 0dn.h2.. 94us+: _raw_spin_lock <-__run_hrtimer <idle>-0 0dn.h2.. 100us+: preempt_count_add <-_raw_spin_lock <idle>-0 0dn.h3.. 114us+: do_raw_spin_lock <-_raw_spin_lock <idle>-0 0dn.h3.. 126us+: _raw_spin_unlock <-hrtimer_interrupt <idle>-0 0dn.h3.. 133us+: do_raw_spin_unlock <-_raw_spin_unlock <idle>-0 0dn.h3.. 141us+: preempt_count_sub <-_raw_spin_unlock <idle>-0 0dn.h2.. 148us+: tick_program_event <-hrtimer_interrupt <idle>-0 0dn.h2.. 155us+: clockevents_program_event <-tick_program_event <idle>-0 0dn.h2.. 163us+: ktime_get <-clockevents_program_event <idle>-0 0dn.h2.. 174us+: clocksource_mmio_readl_down <-ktime_get <idle>-0 0dn.h2.. 184us+: timrotv2_set_next_event <-clockevents_program_event <idle>-0 0dn.h2.. 195us+: note_interrupt <-handle_irq_event_percpu <idle>-0 0dn.h2.. 203us+: _raw_spin_lock <-handle_irq_event <idle>-0 0dn.h2.. 210us+: preempt_count_add <-_raw_spin_lock <idle>-0 0dn.h3.. 219us+: do_raw_spin_lock <-_raw_spin_lock <idle>-0 0dn.h3.. 228us+: unmask_irq <-handle_level_irq <idle>-0 0dn.h3.. 235us+: icoll_unmask_irq <-unmask_irq <idle>-0 0dn.h3.. 243us+: _raw_spin_unlock <-handle_level_irq <idle>-0 0dn.h3.. 251us+: do_raw_spin_unlock <-_raw_spin_unlock <idle>-0 0dn.h3.. 258us+: preempt_count_sub <-_raw_spin_unlock <idle>-0 0dn.h2.. 265us+: irq_exit <-handle_IRQ <idle>-0 0dn.h2.. 273us+: preempt_count_sub <-irq_exit <idle>-0 0dn..2.. 282us+: idle_cpu <-irq_exit <idle>-0 0dn..2.. 291us+: rcu_irq_exit <-irq_exit <idle>-0 0dn..2.. 299us+: T.845 <-rcu_irq_exit <idle>-0 0dn..2.. 313us+: icoll_handle_irq <-__irq_svc <idle>-0 0dn..2.. 321us+: irq_find_mapping <-icoll_handle_irq <idle>-0 0dn..2.. 329us+: handle_IRQ <-icoll_handle_irq <idle>-0 0dn..2.. 336us+: irq_enter <-handle_IRQ <idle>-0 0dn..2.. 343us+: rcu_irq_enter <-irq_enter <idle>-0 0dn..2.. 351us+: T.846 <-rcu_irq_enter <idle>-0 0dn..2.. 360us+: tick_irq_enter <-irq_enter <idle>-0 0dn..2.. 367us+: preempt_count_add <-irq_enter <idle>-0 0dn.h2.. 374us+: generic_handle_irq <-handle_IRQ <idle>-0 0dn.h2.. 381us+: irq_to_desc <-generic_handle_irq <idle>-0 0dn.h2.. 389us+: handle_level_irq <-generic_handle_irq <idle>-0 0dn.h2.. 397us+: _raw_spin_lock <-handle_level_irq <idle>-0 0dn.h2.. 404us+: preempt_count_add <-_raw_spin_lock <idle>-0 0dn.h3.. 417us+: do_raw_spin_lock <-_raw_spin_lock <idle>-0 0dn.h3.. 426us+: icoll_mask_irq <-handle_level_irq <idle>-0 0dn.h3.. 435us+: icoll_ack_irq <-handle_level_irq <idle>-0 0dn.h3.. 443us+: handle_irq_event <-handle_level_irq <idle>-0 0dn.h3.. 451us+: _raw_spin_unlock <-handle_irq_event <idle>-0 0dn.h3.. 458us+: do_raw_spin_unlock <-_raw_spin_unlock <idle>-0 0dn.h3.. 465us+: preempt_count_sub <-_raw_spin_unlock <idle>-0 0dn.h2.. 472us+: handle_irq_event_percpu <-handle_irq_event <idle>-0 0dn.h2.. 479us+: mxs_timer_interrupt <-handle_irq_event_percpu <idle>-0 0dn.h2.. 487us+: hrtimer_interrupt <-mxs_timer_interrupt <idle>-0 0dn.h2.. 494us+: _raw_spin_lock <-hrtimer_interrupt <idle>-0 0dn.h2.. 501us+: preempt_count_add <-_raw_spin_lock <idle>-0 0dn.h3.. 511us+: do_raw_spin_lock <-_raw_spin_lock <idle>-0 0dn.h3.. 520us+: ktime_get_update_offsets <-hrtimer_interrupt <idle>-0 0dn.h3.. 532us+: clocksource_mmio_readl_down <-ktime_get_update_offsets <idle>-0 0dn.h3.. 542us+: hrtimer_rt_defer <-hrtimer_interrupt <idle>-0 0dn.h3.. 550us+: __run_hrtimer <-hrtimer_interrupt <idle>-0 0dn.h3.. 558us+: __remove_hrtimer <-__run_hrtimer <idle>-0 0dn.h3.. 569us+: _raw_spin_unlock <-__run_hrtimer <idle>-0 0dn.h3.. 577us+: do_raw_spin_unlock <-_raw_spin_unlock <idle>-0 0dn.h3.. 584us+: preempt_count_sub <-_raw_spin_unlock <idle>-0 0dn.h2.. 591us+: sched_rt_period_timer <-__run_hrtimer <idle>-0 0dn.h2.. 599us+: ktime_get <-sched_rt_period_timer <idle>-0 0dn.h2.. 611us+: clocksource_mmio_readl_down <-ktime_get <idle>-0 0dn.h2.. 621us+: hrtimer_forward <-sched_rt_period_timer <idle>-0 0dn.h2.. 630us+: ktime_add_safe <-hrtimer_forward <idle>-0 0dn.h2.. 638us+: ktime_add_safe <-hrtimer_forward <idle>-0 0dn.h2.. 646us+: _raw_spin_lock <-sched_rt_period_timer <idle>-0 0dn.h2.. 652us+: preempt_count_add <-_raw_spin_lock <idle>-0 0dn.h3.. 663us+: do_raw_spin_lock <-_raw_spin_lock <idle>-0 0dn.h3.. 670us+: _raw_spin_lock <-sched_rt_period_timer <idle>-0 0dn.h3.. 677us+: preempt_count_add <-_raw_spin_lock <idle>-0 0dn.h4.. 687us+: do_raw_spin_lock <-_raw_spin_lock <idle>-0 0dn.h4.. 695us+: _raw_spin_unlock <-sched_rt_period_timer <idle>-0 0dn.h4.. 703us+: do_raw_spin_unlock <-_raw_spin_unlock <idle>-0 0dn.h4.. 709us+: preempt_count_sub <-_raw_spin_unlock <idle>-0 0dn.h3.. 717us+: _raw_spin_unlock <-sched_rt_period_timer <idle>-0 0dn.h3.. 724us+: do_raw_spin_unlock <-_raw_spin_unlock <idle>-0 0dn.h3.. 731us+: preempt_count_sub <-_raw_spin_unlock <idle>-0 0dn.h2.. 738us+: ktime_get <-sched_rt_period_timer <idle>-0 0dn.h2.. 748us+: clocksource_mmio_readl_down <-ktime_get <idle>-0 0dn.h2.. 756us+: hrtimer_forward <-sched_rt_period_timer <idle>-0 0dn.h2.. 764us+: _raw_spin_lock <-__run_hrtimer <idle>-0 0dn.h2.. 771us+: preempt_count_add <-_raw_spin_lock <idle>-0 0dn.h3.. 780us+: do_raw_spin_lock <-_raw_spin_lock <idle>-0 0dn.h3.. 788us+: enqueue_hrtimer <-__run_hrtimer <idle>-0 0dn.h3.. 809us+: hrtimer_rt_defer <-hrtimer_interrupt <idle>-0 0dn.h3.. 818us+: __run_hrtimer <-hrtimer_interrupt <idle>-0 0dn.h3.. 826us+: __remove_hrtimer <-__run_hrtimer <idle>-0 0dn.h3.. 835us+: _raw_spin_unlock <-__run_hrtimer <idle>-0 0dn.h3.. 843us+: do_raw_spin_unlock <-_raw_spin_unlock <idle>-0 0dn.h3.. 851us+: preempt_count_sub <-_raw_spin_unlock <idle>-0 0dn.h2.. 858us+: tick_sched_timer <-__run_hrtimer <idle>-0 0dn.h2.. 865us+: ktime_get <-tick_sched_timer <idle>-0 0dn.h2.. 878us+: clocksource_mmio_readl_down <-ktime_get <idle>-0 0dn.h2.. 886us+: tick_sched_do_timer <-tick_sched_timer <idle>-0 0dn.h2.. 895us+: tick_do_update_jiffies64 <-tick_sched_do_timer <idle>-0 0dn.h2.. 903us+: _raw_spin_lock <-tick_do_update_jiffies64 <idle>-0 0dn.h2.. 910us+: preempt_count_add <-_raw_spin_lock <idle>-0 0dn.h3.. 920us+: do_raw_spin_lock <-_raw_spin_lock <idle>-0 0dn.h3.. 927us+: preempt_count_add <-tick_do_update_jiffies64 <idle>-0 0dn.h4.. 938us+: do_timer <-tick_do_update_jiffies64 <idle>-0 0dn.h4.. 946us+: calc_global_load <-do_timer <idle>-0 0dn.h4.. 955us+: preempt_count_sub <-tick_do_update_jiffies64 <idle>-0 0dn.h3.. 962us+: _raw_spin_unlock <-tick_do_update_jiffies64 <idle>-0 0dn.h3.. 969us+: do_raw_spin_unlock <-_raw_spin_unlock <idle>-0 0dn.h3.. 976us+: preempt_count_sub <-_raw_spin_unlock <idle>-0 0dn.h2.. 983us+: update_wall_time <-tick_do_update_jiffies64 <idle>-0 0dn.h2.. 991us+: _raw_spin_lock_irqsave <-update_wall_time <idle>-0 0dn.h2.. 999us+: preempt_count_add <-_raw_spin_lock_irqsave <idle>-0 0dn.h3.. 1009us+: do_raw_spin_lock <-_raw_spin_lock_irqsave <idle>-0 0dn.h3.. 1017us+: clocksource_mmio_readl_down <-update_wall_time <idle>-0 0dn.h3.. 1027us+: ntp_tick_length <-update_wall_time <idle>-0 0dn.h3.. 1040us+: ntp_tick_length <-update_wall_time <idle>-0 0dn.h3.. 1052us+: preempt_count_add <-update_wall_time <idle>-0 0dn.h4.. 1068us+: T.731 <-update_wall_time <idle>-0 0dn.h4.. 1077us+: raw_notifier_call_chain <-T.731 <idle>-0 0dn.h4.. 1085us+: notifier_call_chain <-raw_notifier_call_chain <idle>-0 0dn.h4.. 1094us+: preempt_count_sub <-update_wall_time <idle>-0 0dn.h3.. 1102us+: _raw_spin_unlock_irqrestore <-update_wall_time <idle>-0 0dn.h3.. 1109us+: do_raw_spin_unlock <-_raw_spin_unlock_irqrestore <idle>-0 0dn.h3.. 1116us+: preempt_count_sub <-_raw_spin_unlock_irqrestore <idle>-0 0dn.h2.. 1124us+: tick_sched_handle <-tick_sched_timer <idle>-0 0dn.h2.. 1132us+: update_process_times <-tick_sched_handle <idle>-0 0dn.h2.. 1139us+: account_process_tick <-update_process_times <idle>-0 0dn.h2.. 1148us+: scheduler_tick <-update_process_times <idle>-0 0dn.h2.. 1155us+: _raw_spin_lock <-scheduler_tick <idle>-0 0dn.h2.. 1162us+: preempt_count_add <-_raw_spin_lock <idle>-0 0dn.h3.. 1172us+: do_raw_spin_lock <-_raw_spin_lock <idle>-0 0dn.h3.. 1180us+: update_rq_clock <-scheduler_tick <idle>-0 0dn.h3.. 1188us+: task_tick_idle <-scheduler_tick <idle>-0 0dn.h3.. 1195us+: update_cpu_load_active <-scheduler_tick <idle>-0 0dn.h3.. 1202us+: __update_cpu_load <-update_cpu_load_active <idle>-0 0dn.h3.. 1211us+: _raw_spin_unlock <-scheduler_tick <idle>-0 0dn.h3.. 1218us+: do_raw_spin_unlock <-_raw_spin_unlock <idle>-0 0dn.h3.. 1226us+: preempt_count_sub <-_raw_spin_unlock <idle>-0 0dn.h2.. 1235us+: run_local_timers <-update_process_times <idle>-0 0dn.h2.. 1242us+: hrtimer_run_queues <-run_local_timers <idle>-0 0dn.h2.. 1250us+: raise_softirq <-run_local_timers <idle>-0 0dn.h2.. 1258us+: raise_softirq_irqoff <-raise_softirq <idle>-0 0dn.h2.. 1265us+: do_raise_softirq_irqoff <-raise_softirq_irqoff <idle>-0 0dn.h2.. 1275us+: rcu_check_callbacks <-update_process_times <idle>-0 0dn.h2.. 1283us+: rcu_bh_qs <-rcu_check_callbacks <idle>-0 0dn.h2.. 1294us+: invoke_rcu_core <-rcu_check_callbacks <idle>-0 0dn.h2.. 1303us+: wake_up_process <-invoke_rcu_core <idle>-0 0dn.h2.. 1310us+: try_to_wake_up <-wake_up_process <idle>-0 0dn.h2.. 1317us+: _raw_spin_lock_irqsave <-try_to_wake_up <idle>-0 0dn.h2.. 1325us+: preempt_count_add <-_raw_spin_lock_irqsave <idle>-0 0dn.h3.. 1335us+: do_raw_spin_lock <-_raw_spin_lock_irqsave <idle>-0 0dn.h3.. 1343us+: _raw_spin_lock <-try_to_wake_up <idle>-0 0dn.h3.. 1350us+: preempt_count_add <-_raw_spin_lock <idle>-0 0dn.h4.. 1360us+: do_raw_spin_lock <-_raw_spin_lock <idle>-0 0dn.h4.. 1368us+: activate_task <-try_to_wake_up <idle>-0 0dn.h4.. 1375us+: enqueue_task <-activate_task <idle>-0 0dn.h4.. 1382us+: update_rq_clock <-enqueue_task <idle>-0 0dn.h4.. 1390us+: enqueue_task_rt <-enqueue_task <idle>-0 0dn.h4.. 1397us+: dequeue_rt_stack <-enqueue_task_rt <idle>-0 0dn.h4.. 1407us+: T.1436 <-try_to_wake_up <idle>-0 0dn.h4.. 1414us+: check_preempt_curr <-T.1436 <idle>-0 0dn.h4.. 1422us+: resched_task <-check_preempt_curr <idle>-0 0dn.h4.. 1438us+: _raw_spin_unlock <-try_to_wake_up <idle>-0 0dn.h4.. 1445us+: do_raw_spin_unlock <-_raw_spin_unlock <idle>-0 0dn.h4.. 1452us+: preempt_count_sub <-_raw_spin_unlock <idle>-0 0dn.h3.. 1459us+: _raw_spin_unlock_irqrestore <-try_to_wake_up <idle>-0 0dn.h3.. 1467us+: do_raw_spin_unlock <-_raw_spin_unlock_irqrestore <idle>-0 0dn.h3.. 1474us+: preempt_count_sub <-_raw_spin_unlock_irqrestore <idle>-0 0dn.h2.. 1485us+: run_posix_cpu_timers <-update_process_times <idle>-0 0dn.h2.. 1495us+: hrtimer_forward <-tick_sched_timer <idle>-0 0dn.h2.. 1503us+: ktime_add_safe <-hrtimer_forward <idle>-0 0dn.h2.. 1510us+: ktime_add_safe <-hrtimer_forward <idle>-0 0dn.h2.. 1517us+: _raw_spin_lock <-__run_hrtimer <idle>-0 0dn.h2.. 1524us+: preempt_count_add <-_raw_spin_lock <idle>-0 0dn.h3.. 1535us+: do_raw_spin_lock <-_raw_spin_lock <idle>-0 0dn.h3.. 1543us+: enqueue_hrtimer <-__run_hrtimer <idle>-0 0dn.h3.. 1557us+: _raw_spin_unlock <-hrtimer_interrupt <idle>-0 0dn.h3.. 1566us+: do_raw_spin_unlock <-_raw_spin_unlock <idle>-0 0dn.h3.. 1573us+: preempt_count_sub <-_raw_spin_unlock <idle>-0 0dn.h2.. 1580us+: tick_program_event <-hrtimer_interrupt <idle>-0 0dn.h2.. 1588us+: clockevents_program_event <-tick_program_event <idle>-0 0dn.h2.. 1595us+: ktime_get <-clockevents_program_event <idle>-0 0dn.h2.. 1607us+: clocksource_mmio_readl_down <-ktime_get <idle>-0 0dn.h2.. 1617us+: timrotv2_set_next_event <-clockevents_program_event <idle>-0 0dn.h2.. 1627us+: note_interrupt <-handle_irq_event_percpu <idle>-0 0dn.h2.. 1635us+: _raw_spin_lock <-handle_irq_event <idle>-0 0dn.h2.. 1642us+: preempt_count_add <-_raw_spin_lock <idle>-0 0dn.h3.. 1653us+: do_raw_spin_lock <-_raw_spin_lock <idle>-0 0dn.h3.. 1662us+: unmask_irq <-handle_level_irq <idle>-0 0dn.h3.. 1669us+: icoll_unmask_irq <-unmask_irq <idle>-0 0dn.h3.. 1677us+: _raw_spin_unlock <-handle_level_irq <idle>-0 0dn.h3.. 1685us+: do_raw_spin_unlock <-_raw_spin_unlock <idle>-0 0dn.h3.. 1692us+: preempt_count_sub <-_raw_spin_unlock <idle>-0 0dn.h2.. 1699us+: irq_exit <-handle_IRQ <idle>-0 0dn.h2.. 1707us+: preempt_count_sub <-irq_exit <idle>-0 0dn..2.. 1716us+: wake_up_process <-irq_exit <idle>-0 0dn..2.. 1724us+: try_to_wake_up <-wake_up_process <idle>-0 0dn..2.. 1731us+: _raw_spin_lock_irqsave <-try_to_wake_up <idle>-0 0dn..2.. 1738us+: preempt_count_add <-_raw_spin_lock_irqsave <idle>-0 0dn..3.. 1748us+: do_raw_spin_lock <-_raw_spin_lock_irqsave <idle>-0 0dn..3.. 1756us+: _raw_spin_lock <-try_to_wake_up <idle>-0 0dn..3.. 1763us+: preempt_count_add <-_raw_spin_lock <idle>-0 0dn..4.. 1773us+: do_raw_spin_lock <-_raw_spin_lock <idle>-0 0dn..4.. 1780us+: activate_task <-try_to_wake_up <idle>-0 0dn..4.. 1787us+: enqueue_task <-activate_task <idle>-0 0dn..4.. 1794us+: update_rq_clock <-enqueue_task <idle>-0 0dn..4.. 1801us+: enqueue_task_rt <-enqueue_task <idle>-0 0dn..4.. 1808us+: dequeue_rt_stack <-enqueue_task_rt <idle>-0 0dn..4.. 1817us+: T.1436 <-try_to_wake_up <idle>-0 0dn..4.. 1825us+: check_preempt_curr <-T.1436 <idle>-0 0dn..4.. 1832us+: resched_task <-check_preempt_curr <idle>-0 0dn..4.. 1845us+: _raw_spin_unlock <-try_to_wake_up <idle>-0 0dn..4.. 1852us+: do_raw_spin_unlock <-_raw_spin_unlock <idle>-0 0dn..4.. 1859us+: preempt_count_sub <-_raw_spin_unlock <idle>-0 0dn..3.. 1866us+: _raw_spin_unlock_irqrestore <-try_to_wake_up <idle>-0 0dn..3.. 1873us+: do_raw_spin_unlock <-_raw_spin_unlock_irqrestore <idle>-0 0dn..3.. 1880us+: preempt_count_sub <-_raw_spin_unlock_irqrestore <idle>-0 0dn..2.. 1889us+: idle_cpu <-irq_exit <idle>-0 0dn..2.. 1897us+: rcu_irq_exit <-irq_exit <idle>-0 0dn..2.. 1905us+: T.845 <-rcu_irq_exit <idle>-0 0.n..2.. 1920us+: rcu_idle_exit <-cpu_startup_entry <idle>-0 0dn..2.. 1930us+: T.846 <-rcu_idle_exit <idle>-0 0dn..2.. 1941us+: icoll_handle_irq <-__irq_svc <idle>-0 0dn..2.. 1948us+: irq_find_mapping <-icoll_handle_irq <idle>-0 0dn..2.. 1955us+: handle_IRQ <-icoll_handle_irq <idle>-0 0dn..2.. 1962us+: irq_enter <-handle_IRQ <idle>-0 0dn..2.. 1969us+: rcu_irq_enter <-irq_enter <idle>-0 0dn..2.. 1978us+: tick_irq_enter <-irq_enter <idle>-0 0dn..2.. 1986us+: preempt_count_add <-irq_enter <idle>-0 0dn.h2.. 1994us+: generic_handle_irq <-handle_IRQ <idle>-0 0dn.h2.. 2001us+: irq_to_desc <-generic_handle_irq <idle>-0 0dn.h2.. 2009us+: handle_level_irq <-generic_handle_irq <idle>-0 0dn.h2.. 2017us+: _raw_spin_lock <-handle_level_irq <idle>-0 0dn.h2.. 2031us+: preempt_count_add <-_raw_spin_lock <idle>-0 0dn.h3.. 2046us+: do_raw_spin_lock <-_raw_spin_lock <idle>-0 0dn.h3.. 2056us+: icoll_mask_irq <-handle_level_irq <idle>-0 0dn.h3.. 2064us+: icoll_ack_irq <-handle_level_irq <idle>-0 0dn.h3.. 2072us+: handle_irq_event <-handle_level_irq <idle>-0 0dn.h3.. 2079us+: _raw_spin_unlock <-handle_irq_event <idle>-0 0dn.h3.. 2087us+: do_raw_spin_unlock <-_raw_spin_unlock <idle>-0 0dn.h3.. 2094us+: preempt_count_sub <-_raw_spin_unlock <idle>-0 0dn.h2.. 2102us+: handle_irq_event_percpu <-handle_irq_event <idle>-0 0dn.h2.. 2109us+: mxs_timer_interrupt <-handle_irq_event_percpu <idle>-0 0dn.h2.. 2117us+: hrtimer_interrupt <-mxs_timer_interrupt <idle>-0 0dn.h2.. 2125us+: _raw_spin_lock <-hrtimer_interrupt <idle>-0 0dn.h2.. 2132us+: preempt_count_add <-_raw_spin_lock <idle>-0 0dn.h3.. 2142us+: do_raw_spin_lock <-_raw_spin_lock <idle>-0 0dn.h3.. 2151us+: ktime_get_update_offsets <-hrtimer_interrupt <idle>-0 0dn.h3.. 2165us+: clocksource_mmio_readl_down <-ktime_get_update_offsets <idle>-0 0dn.h3.. 2175us+: hrtimer_rt_defer <-hrtimer_interrupt <idle>-0 0dn.h3.. 2183us+: __run_hrtimer <-hrtimer_interrupt <idle>-0 0dn.h3.. 2191us+: __remove_hrtimer <-__run_hrtimer <idle>-0 0dn.h3.. 2201us+: _raw_spin_unlock <-__run_hrtimer <idle>-0 0dn.h3.. 2209us+: do_raw_spin_unlock <-_raw_spin_unlock <idle>-0 0dn.h3.. 2216us+: preempt_count_sub <-_raw_spin_unlock <idle>-0 0dn.h2.. 2224us+: hrtimer_wakeup <-__run_hrtimer <idle>-0 0dn.h2.. 2231us+: wake_up_process <-hrtimer_wakeup <idle>-0 0dn.h2.. 2238us+: try_to_wake_up <-wake_up_process <idle>-0 0dn.h2.. 2245us+: _raw_spin_lock_irqsave <-try_to_wake_up <idle>-0 0dn.h2.. 2253us+: preempt_count_add <-_raw_spin_lock_irqsave <idle>-0 0dn.h3.. 2264us+: do_raw_spin_lock <-_raw_spin_lock_irqsave <idle>-0 0dn.h3.. 2271us+: _raw_spin_lock <-try_to_wake_up <idle>-0 0dn.h3.. 2278us+: preempt_count_add <-_raw_spin_lock <idle>-0 0dn.h4.. 2287us+: do_raw_spin_lock <-_raw_spin_lock <idle>-0 0dn.h4.. 2294us+: activate_task <-try_to_wake_up <idle>-0 0dn.h4.. 2302us+: enqueue_task <-activate_task <idle>-0 0dn.h4.. 2309us+: update_rq_clock <-enqueue_task <idle>-0 0dn.h4.. 2317us+: enqueue_task_fair <-enqueue_task <idle>-0 0dn.h4.. 2325us+: T.781 <-enqueue_task_fair <idle>-0 0dn.h4.. 2333us+: T.782 <-enqueue_task_fair <idle>-0 0dn.h4.. 2343us+: T.1436 <-try_to_wake_up <idle>-0 0dn.h4.. 2350us+: check_preempt_curr <-T.1436 <idle>-0 0dn.h4.. 2358us+: resched_task <-check_preempt_curr <idle>-0 0dn.h4.. 2371us+: _raw_spin_unlock <-try_to_wake_up <idle>-0 0dn.h4.. 2379us+: do_raw_spin_unlock <-_raw_spin_unlock <idle>-0 0dn.h4.. 2387us+: preempt_count_sub <-_raw_spin_unlock <idle>-0 0dn.h3.. 2394us+: _raw_spin_unlock_irqrestore <-try_to_wake_up <idle>-0 0dn.h3.. 2401us+: do_raw_spin_unlock <-_raw_spin_unlock_irqrestore <idle>-0 0dn.h3.. 2409us+: preempt_count_sub <-_raw_spin_unlock_irqrestore <idle>-0 0dn.h2.. 2417us+: _raw_spin_lock <-__run_hrtimer <idle>-0 0dn.h2.. 2424us+: preempt_count_add <-_raw_spin_lock <idle>-0 0dn.h3.. 2434us+: do_raw_spin_lock <-_raw_spin_lock <idle>-0 0dn.h3.. 2443us+: _raw_spin_unlock <-hrtimer_interrupt <idle>-0 0dn.h3.. 2450us+: do_raw_spin_unlock <-_raw_spin_unlock <idle>-0 0dn.h3.. 2457us+: preempt_count_sub <-_raw_spin_unlock <idle>-0 0dn.h2.. 2465us+: tick_program_event <-hrtimer_interrupt <idle>-0 0dn.h2.. 2472us+: clockevents_program_event <-tick_program_event <idle>-0 0dn.h2.. 2479us+: ktime_get <-clockevents_program_event <idle>-0 0dn.h2.. 2489us+: clocksource_mmio_readl_down <-ktime_get <idle>-0 0dn.h2.. 2499us+: timrotv2_set_next_event <-clockevents_program_event <idle>-0 0dn.h2.. 2508us+: note_interrupt <-handle_irq_event_percpu <idle>-0 0dn.h2.. 2516us+: _raw_spin_lock <-handle_irq_event <idle>-0 0dn.h2.. 2523us+: preempt_count_add <-_raw_spin_lock <idle>-0 0dn.h3.. 2533us+: do_raw_spin_lock <-_raw_spin_lock <idle>-0 0dn.h3.. 2541us+: unmask_irq <-handle_level_irq <idle>-0 0dn.h3.. 2548us+: icoll_unmask_irq <-unmask_irq <idle>-0 0dn.h3.. 2556us+: _raw_spin_unlock <-handle_level_irq <idle>-0 0dn.h3.. 2563us+: do_raw_spin_unlock <-_raw_spin_unlock <idle>-0 0dn.h3.. 2570us+: preempt_count_sub <-_raw_spin_unlock <idle>-0 0dn.h2.. 2578us+: irq_exit <-handle_IRQ <idle>-0 0dn.h2.. 2585us+: preempt_count_sub <-irq_exit <idle>-0 0dn..2.. 2595us+: idle_cpu <-irq_exit <idle>-0 0dn..2.. 2603us+: rcu_irq_exit <-irq_exit <idle>-0 0.n..2.. 2617us+: arch_cpu_idle_exit <-cpu_startup_entry <idle>-0 0.n..2.. 2626us+: tick_nohz_idle_exit <-cpu_startup_entry <idle>-0 0.n..2.. 2635us+: schedule_preempt_disabled <-cpu_startup_entry <idle>-0 0.n..2.. 2642us+: preempt_count_sub <-schedule_preempt_disabled <idle>-0 0.n..1.. 2653us+: schedule <-schedule_preempt_disabled <idle>-0 0d...3.. 2685us+: __schedule <idle>-0 0d...3.. 2692us : 0:120:R ==> [000] 1317: 19:R cyclictest root@freescale ~$ --Ismail ________________________________ The information contained in this message is privileged and intended only for the recipients named. 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