[ltt-dev] Using LTTng on DA8xx Target

[saumya agarwal]

Thanks a lot. I shall give it a try now.

--Saumya

On 11/12/08, Pierre-Marc Fournier <pierre-marc.fournier at polymtl.ca> wrote:
> saumya agarwal wrote:
> > Following exes are present in /usr/bin
> > ltrace
> > ltt-unload
> > lttd
> > lttv-gui
> > ltt-load
> > lttctl
> > lttv
> > lttv.real
> >
> > Does that means I don't have to install LTTng patches, or get LLT
> > control tools on target?
> > Only thing I need is to install LTTV on host?
>
> Exactly.
>
> >
> > --Saumya
> >
> > On 11/12/08, Mathieu Desnoyers <compudj at krystal.dyndns.org> wrote:
> >> If you already have a kernel with the LTTng patches applied, it probably
> >> comes from your distro. You should have a look at your distro-specific
> >> documentation to see if they provide some info about the specific LTTng
> >> version they use.  But yes, all the pointers Pierre-Marc told you about
> >> should help you getting started.
> >>
> >> Mathieu
> >>
> >> * saumya agarwal (cmks2002 at gmail.com) wrote:
> >>> Thanks Marc, this info should get me started.
> >>>
> >>> My host linux machine has a different kernel version (2.6.9), so do I
> >>> need LTTV compatible with host or target?
> >>> In DA8xx kernel sources, I see a folder named LTT which has some
> >>> source files like ltt-control.c, ltt-core.c etc, so does that mean
> >>> that LTT control tools are already available in the kernel?
> >>>
> >>> --Saumya
> >>>
> >>>
> >>> On 11/12/08, Pierre-Marc Fournier <pierre-marc.fournier at polymtl.ca> wrote:
> >>>> Hello Saumya,
> >>>>
> >>>> saumya agarwal wrote:
> >>>>> I am using a DA8xx Primus EVM and I want to use LTTng to trace the
> >>>>> system. The  kernel supports LTTng.
> >>>>> This is the first time I'll am working on it.
> >>>>>
> >>>>> I downloaded TraceToolkit-0.9.5 and untared it.
> >>>>> The patched I am getting are:
> >>>>> patch-ltt-linux-2.4.16-rthal5f-020415-1.14
> >>>>> patch-ltt-linux-2.4.16-s390-020422-1.14
> >>>>> patch-ltt-linux-2.4.16-vanilla-020415-1.14
> >>>>> patch-ltt-linux-2.5.7-vanilla-020415-1.14
> >>>>> patch-ltt-rtai-24.1.8-020317-1.14
> >>>>>
> >>>> Hmm, I don't know where you got this patch, but it is several years old.
> >>>> Please see the site http://ltt.polymtl.ca
> >>>> Have a look at the Compatibility list ("LTTng+LTTV versions
> >>>> compatibility" link) to see what you need for a 2.6.18 kernel. You
> >>>> probably need LTTng 0.6.41, ltt-control 0.30 and LTTV (the viewer)
> >>>> 0.8.72. You will also find the quickstart guide there which will help
> >>>> get you started.
> >>>>
> >>>> Note that since 2.6.18 is an old kernel. A lot of things changed since
> >>>> that time and the quickstart guide that is on the site now will not be
> >>>> in sync with this old version. I would recommend fetching the old guide
> >>>> from the svn repository.
> >>>>
> >>>>> But the linux kernel version for DA8xx is 2.6.18.
> >>>>> So can I use any of these patches?
> >>>> No, you need a much newer version of LTTng that was designed for 2.6.18.
> >>>>
> >>>>> One more doubt I had was, that we use this tool from host or on
> >>>>> target? Do I need a linux host machine, apply patches to its kernel,
> >>>>> and reboot it and then start using it OR I need to apply patches to my
> >>>>> DA8xx kernel and then start tracing on target itself?
> >>>> You install the patches on the target kernel. You also need the
> >>>> ltt-control tools on the target to control the tracing. You need to have
> >>>> enough disk space on the target to record the trace. Work on streaming
> >>>> is under way. Once you have the trace, you transfer it to the host and
> >>>> inspect it with LTTV.
> >>>>
> >>>>> I am kind of confused about its usage.
> >>>>> Could any one help me out with the exact procedure for using LTTng and
> >>>>> patches version (website) from where I can get required packages?
> >>>> Look at ltt.polymtl.ca and the quickstart guide.
> >>>>
> >>>> pmf
> >>>>
> >>> _______________________________________________
> >>> ltt-dev mailing list
> >>> ltt-dev at lists.casi.polymtl.ca
> >>> http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
> >>>
> >> --
> >> Mathieu Desnoyers
> >> OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68
> >>
>
>