Re: Does LTTng UST support ARM?

Re: Does LTTng UST support ARM?

[Jan Glauber]

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Hi Hongbo,
I'm using LTTng UST on ARM, so the statement that it does not support the
ARM platform is certainly wrong.

I don't know why you don't get trace results, can you provide some more
details about your setup (LTTng versions, commands you are using, console
output,...)

Regards, Jan


2014-05-29 10:10 GMT+02:00 Hongbo Zhang <hongbo.zhang@linaro.org>:

> Hi all,
> I got info that LTTng UST didn't support ARM platform, does anybody know
> if there is any update about this? LTTng UST still doesn't support ARM
> nowadays?
> I can compile and install userspace-rcu and lttng-ust, but cannot get
> trace result.
> Thanks.
>
> _______________________________________________
> lttng-dev mailing list
> lttng-dev@lists.lttng.org
> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
>
>

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Re: Does LTTng UST support ARM?

[Hongbo Zhang]

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Thank you Jan.
Encouraged by the truth that LTTng UST does work on ARM, I paid more
efforts and run it on my ARM board at last.

I am using a Ubuntu on my board, and I installed lttng-ust and
userspace-rcu from source codes, but installed lttng-tools by apt-get
command(the babeltrace was also included I think), the reason I failed to
trace the lttng-tools from apt-get doesn't work and even doesn't give any
suggestive output.
Then I re-installed lttng-tools and babeltrace from source codes again,
then everything works :)



On 29 May 2014 18:19, Jan Glauber <jan.glauber@gmail.com> wrote:

> Hi Hongbo,
> I'm using LTTng UST on ARM, so the statement that it does not support the
> ARM platform is certainly wrong.
>
> I don't know why you don't get trace results, can you provide some more
> details about your setup (LTTng versions, commands you are using, console
> output,...)
>
> Regards, Jan
>
>
> 2014-05-29 10:10 GMT+02:00 Hongbo Zhang <hongbo.zhang@linaro.org>:
>
>> Hi all,
>> I got info that LTTng UST didn't support ARM platform, does anybody know
>> if there is any update about this? LTTng UST still doesn't support ARM
>> nowadays?
>> I can compile and install userspace-rcu and lttng-ust, but cannot get
>> trace result.
>> Thanks.
>>
>> _______________________________________________
>> lttng-dev mailing list
>> lttng-dev@lists.lttng.org
>> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
>>
>>
>

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Re: Does LTTng UST support ARM?

[Alexandre Montplaisir]

On 05/30/2014 04:53 AM, Hongbo Zhang wrote:
> Thank you Jan.
> Encouraged by the truth that LTTng UST does work on ARM, I paid more
> efforts and run it on my ARM board at last.
>
> I am using a Ubuntu on my board, and I installed lttng-ust and
> userspace-rcu from source codes, but installed lttng-tools by apt-get
> command(the babeltrace was also included I think), the reason I failed to
> trace the lttng-tools from apt-get doesn't work and even doesn't give any
> suggestive output.
> Then I re-installed lttng-tools and babeltrace from source codes again,
> then everything works :)

You need to use lttng-ust and lttng-tools (and lttng-modules if you use 
the kernel tracer) from the same release branch. So everything needs to 
be 2.4.x, or everything 2.3.x, etc.

If you compiled lttng-ust 2.4 from source, but the distro package 
installed lttng-tools let's say 2.2, it's expected that they wouldn't 
work. :)  However I'd suppose some sort of user-friendly message should 
be printed if incompatible versions are used together.

Cheers,
Alexandre

Does LTTng UST support ARM?

[Hongbo Zhang]

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Hi all,
I got info that LTTng UST didn't support ARM platform, does anybody know if
there is any update about this? LTTng UST still doesn't support ARM
nowadays?
I can compile and install userspace-rcu and lttng-ust, but cannot get trace
result.
Thanks.

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