From: Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com>
To: paramesh p <params16jan@gmail.com>
Cc: lttng-dev@lists.lttng.org
Subject: Re: Error in creating session in Embedded Android based development board
Date: Sun, 3 Jun 2018 18:24:16 -0400 [thread overview]
Message-ID: <20180603222416.GA29511__41603.5812501379$1528064551$gmane$org@joraj-alpa> (raw)
In-Reply-To: <CAOG=51x=05q8b8T8TNVoxXuEsy5QOyK59gn6y67Rtmp-9qN+RA@mail.gmail.com>
Hi Paramesh,
LTTng 2.6 is not supported anymore. Either upgrade your bitbake recipes or
the yocto tree used. The problem you seems to observe is most
probably related to UEFI Secure Boot and kernel/modules signing. You could try to
disabling Secure Boot in the BIOS. Otherwise you will need to sign the modules.
Cheers
On Sat, Jun 02, 2018 at 06:01:36PM -0700, paramesh p wrote:
> Hi,
> I am new to Tracing. I was trying to use Lttng in my Android based
> Dragonboard Develop kit. I installed Lttng with Bitbake, by adding below
> line in conf/local.conf
> IMAGE_INSTALL_append = " lttng-tools lttng-modules lttng-ust"
>
> After the succesful build and flashing, I can access the Lttng in my
> platform. Below is the output of "lttng" command
>
>
> */ # lttng*
> *LTTng Trace Control 2.6.0 - Gaia - v2.6.0*
>
> *usage: lttng [OPTIONS] <COMMAND> [<ARGS>]*
>
> *Options:*
> * -V, --version Show version*
> * -h, --help Show this help*
> * --list-options Simple listing of lttng options*
> * --list-commands Simple listing of lttng commands*
> * -v, --verbose Increase verbosity*
> * -q, --quiet Quiet mode*
> * -m, --mi TYPE Machine Interface mode.*
> * Type: xml*
> * -g, --group NAME Unix tracing group name. (default: tracing)*
> * -n, --no-sessiond Don't spawn a session daemon*
> * --sessiond-path PATH Session daemon full path*
> * --relayd-path PATH Relayd daemon full path*
>
> *Commands:*
> * add-context Add context to event and/or channel*
> * calibrate Quantify LTTng overhead*
> * create Create tracing session*
> * destroy Tear down tracing session*
> * enable-channel Enable tracing channel*
> * enable-event Enable tracing event*
> * disable-channel Disable tracing channel*
> * disable-event Disable tracing event*
> * list List possible tracing options*
> * set-session Set current session name*
> * snapshot Snapshot buffers of current session name*
> * start Start tracing*
> * stop Stop tracing*
> * version Show version information*
> * view Start trace viewer*
> * save Save session configuration*
> * load Load session configuration*
>
> *Each command also has its own -h, --help option.*
>
> *Please see the lttng(1) man page for full documentation.*
> *See http://lttng.org <http://lttng.org> for updates, bug reports and news.*
>
>
> When I try to create a session. I am getting below error.
>
> */ # lttng create test-session*
> *Spawning a session daemon*
> *modprobe: ERROR: could not insert 'lttng_tracer': Required key not
> available*
> *Error: Unable to load required module lttng-tracer*
> *Warning: No kernel tracer available*
> *Session test-session created.*
> *Traces will be written in
> /home/root/lttng-traces/test-session-19700101-000212*
> *Error: Unable to create config file*
> Error: Command error
>
>
> Please help me.
> Thanks in Advance.
>
> Regards,
> Paramesh
> _______________________________________________
> lttng-dev mailing list
> lttng-dev@lists.lttng.org
> https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
--
Jonathan Rajotte-Julien
EfficiOS
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next parent reply other threads:[~2018-06-03 22:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAOG=51x=05q8b8T8TNVoxXuEsy5QOyK59gn6y67Rtmp-9qN+RA@mail.gmail.com>
2018-06-03 22:24 ` Jonathan Rajotte-Julien [this message]
2018-06-03 1:01 Error in creating session in Embedded Android based development board paramesh p
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