On Tue, Feb 28, 2012 at 8:13 PM, Dmitry Antipov <dmitry.anti...@linaro.org> wrote: > On 02/28/2012 04:45 AM, Ming Lei wrote: > >> Please try the uImage on the link below: >> >> http://kernel.ubuntu.com/~ming/up/uImage-3.3-rc5-perf >> > > No good news for the oprofile:
OK, could you try the MLO and u-boot.bin under the link of http://kernel.ubuntu.com/~ming/up to see if 'perf' may work well? If still not, could you tell me what is the revision of your pandaboard? or do you have any changes on the hardware? I am sure that several guys have tried the current omap4 pmu patch and make perf work well on pandaboard. > > > ... > irq 34: nobody cared (try booting with the "irqpoll" option) > [stack] > > Disabling IRQ #34 > irq 33: nobody cared (try booting with the "irqpoll" option) > [stack] > Disabling IRQ #33 > ... > > Could you also try an attached module in a loop like: > > while true; do insmod timeoutbench.ko && rmmod timeoutbench; done > > with oprofile running? 'perf top' can be run well with the output below: PerfTop: 1036 irqs/sec kernel:99.2% us: 1.0% guest kernel: 0.0% guest us: 0.0% exact: 0.0% [1000Hz cycles], (all, 2 CPUs) -------------------------------------------------------------------------------------------------------- 44.87% [kernel] [k] _raw_spin_unlock_irqrestore 22.48% [kernel] [k] _raw_spin_unlock_irq 7.41% [kernel] [k] del_timer_sync 6.24% [kernel] [k] lock_acquire 4.95% [kernel] [k] lock_release 2.05% [kernel] [k] omap4_enter_idle 1.81% [kernel] [k] finish_task_switch 1.06% [kernel] [k] rcu_note_context_switch 0.60% [kernel] [k] schedule_timeout 0.57% [kernel] [k] memchr_inv 0.54% [kernel] [k] __schedule 0.54% [kernel] [k] thumbee_notifier 0.53% [kernel] [k] sub_preempt_count thanks, -- Ming Lei _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
