[lttng-dev] lttng view - doubt

[lttng-dev] lttng view - doubt

[Muni Sekhar]

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 [ Please keep me in CC as I'm not subscribed to the list]


Hello,


Few lines of lttng view trace about workqueue events:

[11:07:08.208795325] (+0.000001677) testbox irq_handler_entry: {
cpu_id = 1 }, { irq = 16, name = "debug_irq" }

[11:07:08.208822703] (+0.000027378) testbox workqueue_queue_work: {
cpu_id = 1 }, { work = 0xFFFF8801396D4F18, function =
0xFFFFFFFFC07273B0, req_cpu = 256 }

[11:07:08.208824380] (+0.000001677) testbox workqueue_activate_work: {
cpu_id = 1 }, { work = 0xFFFF8801396D4F18 }

[11:07:08.208826615] (+0.000002235) testbox irq_handler_exit: { cpu_id
= 1 }, { irq = 16, ret = 1 }

[11:07:08.208831364] (+0.000004749) testbox workqueue_execute_start: {
cpu_id = 1 }, { work = 0xFFFF8801396D4F18, function =
0xFFFFFFFFC07273B0 }

[11:07:08.208841422] (+0.000010058) testbox workqueue_execute_end: {
cpu_id = 1 }, { work = 0xFFFF8801396D4F18 }





Can it be possible to print function name instead of ‘function =
0xFFFFFFFFC07273B0’?

-- 
Thanks,
Sekhar

[lttng-dev] lttng view - doubt

[Jérémie Galarneau]

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On Mon, Aug 8, 2016 at 2:37 AM, Muni Sekhar <munisekharrms at gmail.com> wrote:
>  [ Please keep me in CC as I'm not subscribed to the list]
>
>
> Hello,
>
>
> Few lines of lttng view trace about workqueue events:
>
> [11:07:08.208795325] (+0.000001677) testbox irq_handler_entry: {
> cpu_id = 1 }, { irq = 16, name = "debug_irq" }
>
> [11:07:08.208822703] (+0.000027378) testbox workqueue_queue_work: {
> cpu_id = 1 }, { work = 0xFFFF8801396D4F18, function =
> 0xFFFFFFFFC07273B0, req_cpu = 256 }
>
> [11:07:08.208824380] (+0.000001677) testbox workqueue_activate_work: {
> cpu_id = 1 }, { work = 0xFFFF8801396D4F18 }
>
> [11:07:08.208826615] (+0.000002235) testbox irq_handler_exit: { cpu_id
> = 1 }, { irq = 16, ret = 1 }
>
> [11:07:08.208831364] (+0.000004749) testbox workqueue_execute_start: {
> cpu_id = 1 }, { work = 0xFFFF8801396D4F18, function =
> 0xFFFFFFFFC07273B0 }
>
> [11:07:08.208841422] (+0.000010058) testbox workqueue_execute_end: {
> cpu_id = 1 }, { work = 0xFFFF8801396D4F18 }
>
>
>
>
>
> Can it be possible to print function name instead of ‘function =
> 0xFFFFFFFFC07273B0’?

Hi Muni,

Unfortunately, you need to perform that look-up manually using
addr2line or other such tools since Babeltrace (the viewer invoked by
lttng view) only performs the address/symbol association for user
space code. Extending that feature would be a great idea though!

I'm CC-ing the Trace Compass mailing list; perhaps this is supported
or already in the works.

Thanks!
Jérémie

>
> --
> Thanks,
> Sekhar
> _______________________________________________
> lttng-dev mailing list
> lttng-dev at lists.lttng.org
> https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev



-- 
Jérémie Galarneau
EfficiOS Inc.
http://www.efficios.com

[lttng-dev] lttng view - doubt

[Muni Sekhar]

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On Wed, Aug 10, 2016 at 12:41 AM, Jérémie Galarneau
<jeremie.galarneau at efficios.com> wrote:
> On Mon, Aug 8, 2016 at 2:37 AM, Muni Sekhar <munisekharrms at gmail.com> wrote:
>>  [ Please keep me in CC as I'm not subscribed to the list]
>>
>>
>> Hello,
>>
>>
>> Few lines of lttng view trace about workqueue events:
>>
>> [11:07:08.208795325] (+0.000001677) testbox irq_handler_entry: {
>> cpu_id = 1 }, { irq = 16, name = "debug_irq" }
>>
>> [11:07:08.208822703] (+0.000027378) testbox workqueue_queue_work: {
>> cpu_id = 1 }, { work = 0xFFFF8801396D4F18, function =
>> 0xFFFFFFFFC07273B0, req_cpu = 256 }
>>
>> [11:07:08.208824380] (+0.000001677) testbox workqueue_activate_work: {
>> cpu_id = 1 }, { work = 0xFFFF8801396D4F18 }
>>
>> [11:07:08.208826615] (+0.000002235) testbox irq_handler_exit: { cpu_id
>> = 1 }, { irq = 16, ret = 1 }
>>
>> [11:07:08.208831364] (+0.000004749) testbox workqueue_execute_start: {
>> cpu_id = 1 }, { work = 0xFFFF8801396D4F18, function =
>> 0xFFFFFFFFC07273B0 }
>>
>> [11:07:08.208841422] (+0.000010058) testbox workqueue_execute_end: {
>> cpu_id = 1 }, { work = 0xFFFF8801396D4F18 }
>>
>>
>>
>>
>>
>> Can it be possible to print function name instead of ‘function =
>> 0xFFFFFFFFC07273B0’?
>
> Hi Muni,
>
> Unfortunately, you need to perform that look-up manually using
> addr2line or other such tools since Babeltrace (the viewer invoked by
> lttng view) only performs the address/symbol association for user
> space code. Extending that feature would be a great idea though!
Thanks for the reply. I used the /proc/kallsyms to fetch the symbol name.

>
> I'm CC-ing the Trace Compass mailing list; perhaps this is supported
> or already in the works.
>
> Thanks!
> Jérémie
>
>>
>> --
>> Thanks,
>> Sekhar
>> _______________________________________________
>> lttng-dev mailing list
>> lttng-dev at lists.lttng.org
>> https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
>
>
>
> --
> Jérémie Galarneau
> EfficiOS Inc.
> http://www.efficios.com



-- 
Thanks,
Sekhar