[lttng-dev] Error using add-context for perf counters

[Bernd Hufmann]

Hi Mathieu

I tried it with 2.2-rc1 and it also fails.
I'll open a bug report for that.

Thanks
Bernd

On 04/10/2013 10:21 AM, Mathieu Desnoyers wrote:
> please open a bug report on the bug tracker for this issue if you still
> see it. Please let us know if you see it in 2.2-rc1 too.
>
> * Matthew Khouzam (matthew.khouzam at ericsson.com) wrote:
>> Hi, I can confirm this bug, Has anyone else tried it?
>>
>> On 13-03-19 03:03 PM, Bernd Hufmann wrote:
>>> Hello
>>>
>>> I cannot add contexts for perf counters using lttng-tools v2.1.1 and I
>>> get an error (see below). When using lttng-tools 2.0.5 (on a different
>>> computer) it works. Could somebody from lttng development team look
>>> into that?
>>>
>>> Thanks
>>> Bernd
>>>
>>> ----------------------------------------------------------------------
>>>> lttng create mySession
>>> Session mySession created.
>>> Traces will be written in
>>> /home/bernd/lttng-traces/mySession-20130319-145021
>>>
>>>> lttng enable-event -a -k
>>> All kernel events are enabled in channel channel0
>>>
>>>> lttng add-context -k -t perf:branch-misses -t perf:cache-misses
>>> PERROR: add context ioctl: Invalid argument [in
>>> kernel_add_channel_context() at kernel.c:47]
>>> Error: perf:cache-misses: Add kernel context failed
>>> PERROR: add context ioctl: Invalid argument [in
>>> kernel_add_channel_context() at kernel.c:47]
>>> Error: perf:branch-misses: Add kernel context failed
>>> Warning: Some command(s) went wrong
>>>
>>> -----------------------------------------------------------------------
>>> My setup is:
>>> Ubuntu 12.04 with kernel 3.2.0-38
>>> lttng-modules v2.1.1
>>> lttng-tools v2.1.1
>>>
>>>
>>>
>>
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>> lttng-dev at lists.lttng.org
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