[ltt-dev] ltt-dev Digest, Vol 12, Issue 4

[Mathieu Desnoyers]

* Shouwei Li (casmyu at gmail.com) wrote:
> HI, All:
> Thank you very much for your quick reply!
> I have put the config file in the attachment. Please help me to check it.
> If the modules have been build in to kernel correctly, why I can not
> find the by this command:
> # lsmod | grep modulesName
> Now I am not sure whether I have compiled the kernel correctly, of
> course I don't knwo What should I do next?
> Thanks a million!
> 

You have :
CONFIG_LTT_TRACEPROBES=y

Which means that the probes are really built into your kernel image.
There is no need to load them as modules, and they don't appear as
modules, since they are within the kernel core. You can just skip the
module load part and proceed to the next steps, given that LTTng and all
the probes are already "loaded" as soon as you kernel image is populated
in memory by the boot loader.

Mathieu


> On 4/4/09, Mathieu Desnoyers <compudj at krystal.dyndns.org> wrote:
> > * Shouwei Li (casmyu at gmail.com) wrote:
> >> Hi, All:
> >> I have installed the lttng and lttv successfully. According this manual:
> >> http://ltt.polymtl.ca/svn/trunk/lttv/LTTngManual.html
> >> But after this step, I did not know how to do next:
> >>
> >> You need to load the LTT modules to be able to control tracing from user
> >> space. This is done by issuing the following commands. Note however these
> >> commands load all LTT modules. Depending on what options you chose to
> >> compile statically, you may not need to issue all these commands.
> >>
> >> modprobe ltt-trace-control
> >> modprobe ltt-marker-control
> >> modprobe ltt-tracer
> >> modprobe ltt-serialize
> >> modprobe ltt-relay
> >> modprobe ipc-trace
> >> ......
> >>
> >> I can not find these modules, even I had search them all the disk.
> >>
> >> Please tell me where these modules put or how to compile these modules. I
> >> can
> >> make sure that when I compile the lttng-kernel, I have select ALL of the
> >> items
> >> of LTT category.
> >>
> >> [root][~]# find / -name ltt-marker-control
> >> [root][~]# find / -name ipc-trace
> >> [root][~]# modprobe ipc-trace
> >> FATAL: Module ipc_trace not found.
> >> [root][~]# modprobe ltt-marker-control
> >> FATAL: Module ltt_marker_control not found.
> >>
> >> Thanks all !
> >>
> >
> > They are probably selected as "builtin" into your kernel image.
> > Therefore you would not need to load them as modules, since they are
> > already present.
> >
> > We could confirm this if you give us your .config or
> > /boot/config-kernelversion-with-lttng.
> >
> > Mathieu
> >
> >
> >> On Sat, Apr 4, 2009 at 12:00 AM,
> >> <ltt-dev-request at lists.casi.polymtl.ca>wrote:
> >>
> >> > Send ltt-dev mailing list submissions to
> >> >        ltt-dev at lists.casi.polymtl.ca
> >> >
> >> > To subscribe or unsubscribe via the World Wide Web, visit
> >> >        http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
> >> > or, via email, send a message with subject or body 'help' to
> >> >        ltt-dev-request at lists.casi.polymtl.ca
> >> >
> >> > You can reach the person managing the list at
> >> >        ltt-dev-owner at lists.casi.polymtl.ca
> >> >
> >> > When replying, please edit your Subject line so it is more specific
> >> > than "Re: Contents of ltt-dev digest..."
> >> >
> >> >
> >> > Today's Topics:
> >> >
> >> >   1. Re: Where I can get some more document recently (Michel Dagenais)
> >> >
> >> >
> >> > ----------------------------------------------------------------------
> >> >
> >> > Message: 1
> >> > Date: Fri, 03 Apr 2009 11:13:39 -0400
> >> > From: Michel Dagenais <michel.dagenais at polymtl.ca>
> >> > Subject: Re: [ltt-dev] Where I can get some more document recently
> >> > To: Shouwei Li <casmyu at gmail.com>
> >> > Cc: ltt-dev at lists.casi.polymtl.ca
> >> > Message-ID: <1238771619.15836.2.camel at localhost>
> >> > Content-Type: text/plain
> >> >
> >> >
> >> > > *** exact error that occured. This usually means GLIB is incorrectly
> >> > > installed.
> >> > > configure: error: glib is required in order to compile
> >> > > LinuxTraceToolkit - download it from ftp://ftp.gtk.org/pub/gtk
> >> > > But I have installed the libc, as follows:
> >> >
> >> > The GLIB and the GNU Libc are not the same thing. You need something
> >> > like libglib2.0-dev Development files for the GLib library.
> >> >
> >> > > [root][~]# dpkg -l | grep libc6
> >> > > ii  libc6                             2.9-6                    GNU C
> >> >
> >> >
> >> >
> >> >
> >> > ------------------------------
> >> >
> >> > _______________________________________________
> >> > ltt-dev mailing list
> >> > ltt-dev at lists.casi.polymtl.ca
> >> > http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
> >> >
> >> >
> >> > End of ltt-dev Digest, Vol 12, Issue 4
> >> > **************************************
> >> >
> >>
> >>
> >>
> >> --
> >> Best Regards!
> >> Shouwei Li
> >
> >> _______________________________________________
> >> 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
> >
> 
> 
> -- 
> Best Regards!
> Shouwei Li



-- 
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68