[ltt-dev] LTTng internals document

Umashankar V.K. shankar.vk at gmail.com
Mon Aug 4 07:41:01 EDT 2008


Hi,

I  can see that the ( major , minor ) version  in  ltt-core.c  is   0,7.
Is this what you are referring to ?

I  have seen the  compatibility list.   I am using
ltt-control-0.50-17072008.

Also,  I want to know  why do  you  package   the 3 files  ( ltt-control.c
ltt-control.h  ltt-statedump.c )
separately  as  ltt-modules  in the  repository  ?

I  greped  for   /proc  APIs  in  LTT source files,  but could not find any
.  Anyway ,  I am reading the code now.

The  version of LTT  I am  using came  pre-included with vendor-supplied
kernel code.

                                    shankar






On Wed, Jul 30, 2008 at 8:29 PM, Mathieu Desnoyers <
compudj at krystal.dyndns.org> wrote:

> Which version of LTTng is it based on ?
>
> Have you made sure you follow the compatibility list on
> http://ltt.polymtl.ca ?
>
> Given the APIs are not casted in stone and will likely change with
> integration to the Linux kernel, the comments at the beginning of the
> patches is probably the best reference. Also, going through the papers
> found on the website will give you an idea of the overall design.
>
> Mathieu
>
>
> * Umashankar V.K. (shankar.vk at gmail.com) wrote:
> > Hi,
> >
> >      I am trying out  LTTng on MIPS 4K with Linux 2.6.14.
> >
> > I find that  /proc/ltt is not getting created even after I insmod
> > ltt-control.ko, ltt-statedump.ko and ltt-core.ko. ( The build has created
> > only 3 LTT modules. The facilities are built into the kernel. )
> >
> > ( ltt-armall script is trying to read /proc/ltt. )
> >
> > To debug this, I am going through the code of LTTng, to get a basic
> > understanding.
> >
> > I  want to know if anybody has written a document on the internals/design
> of
> > this tool.  If not, would someone please do so ?
> >
> >                     Umashankar
>
> > _______________________________________________
> > 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
>
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