On Sun, 2012-02-05 at 14:49 +0200, Raz wrote:

I think it would be nice if load_module in ftrace mode will report that
the driver should be recompiled. same as where it screams about version
or license.

Did you have CONFIG_MODVERSIONS enabled?

So, i managed to use ftrace, problem is that i cannot get the trace
out of the machine,
neither by scp nor by sz. i cannot cp it since it will flush to drive.
( even though i set
flush to RT 99).

Why doesn't scp work?

You can also use trace-cmd to send the trace to another box.

On another host run:

	trace-cmd listen -p <port>

On this box run:

	trace-cmd record -p function -N <host>:<port>


The you can send me the "trace.*.dat" file generated.

Here is part of the trace  file.

      tEthernInp-1173  [000]   133.002614: sub_preempt_count <-unmask_8259A_irq
      tEthernInp-1173  [000]   133.002614: sub_preempt_count <-handle_level_irq
      tEthernInp-1173  [000]   133.002614: irq_exit <-do_IRQ
      tEthernInp-1173  [000]   133.002615: sub_preempt_count <-irq_exit
      tEthernInp-1173  [000]   133.002615: wakeup_softirqd <-irq_exit
      tEthernInp-1173  [000]   133.002615: wake_up_process <-wakeup_softirqd
      tEthernInp-1173  [000]   133.002616: try_to_wake_up <-wake_up_process
      tEthernInp-1173  [000]   133.002616: add_preempt_count <-try_to_wake_up
      tEthernInp-1173  [000]   133.002616: add_preempt_count <-try_to_wake_up
      tEthernInp-1173  [000]   133.002617: activate_task <-try_to_wake_up
      tEthernInp-1173  [000]   133.002617: enqueue_task <-activate_task
      tEthernInp-1173  [000]   133.002617: update_rq_clock <-enqueue_task
      tEthernInp-1173  [000]   133.002618: enqueue_task_rt <-enqueue_task
      tEthernInp-1173  [000]   133.002618: dequeue_rt_stack <-enqueue_task_rt
      tEthernInp-1173  [000]   133.002618: ttwu_do_wakeup.clone.139 <-try_to_wa

Would you be able to send more than this?


-- Steve