[ltt-dev] LTTng kernel patches not patching successfully

[Ajit R]

--- On Fri, 7/17/09, Mathieu Desnoyers <compudj at krystal.dyndns.org> wrote:

> From: Mathieu Desnoyers <compudj at krystal.dyndns.org>
> Subject: Re: [ltt-dev] LTTng kernel patches not patching successfully
> To: "Ajit R" <ajitrzid at yahoo.com>
> Cc: ltt-dev at lists.casi.polymtl.ca
> Date: Friday, July 17, 2009, 7:13 PM
> * Ajit R (ajitrzid at yahoo.com)
> wrote:
> > 
> > Hello
> >   I want to try out LTT on my x86 32
> bit machine before I move to an ARM target. The tried the
> following steps
> > 1) Download kernel from kernel.org. Version
> linux-2.6.23.tar.bz2
> > 2) Patched with the "mm" patch - 2.6.23-mm1.bz2
> 
> I would recommend staying with "stable" kernels rather than
> experimental
> -mm kernels when possible.
> 
> > 3) Tried patching
> "patch-2.6.23-mm1-lttng-0.10-pre14.tar.bz2" to the mm1
> kernel tree. This fails with multiple rejects.
> > 4) Tried patching
> "patch-2.6.23-mm1-lttng-0.10-pre7.tar.bz2". This also fails
> with multiple rejects.
> > 5) Patched the vanilla 2.6.23 kernel to 2.6.30.
> > 6) Also tried : "patch-2.6.30-lttng-0.148.tar.bz2" 
> >     This fails too with multiple
> rejects.
> > Downloaded patches from "http://ltt.polymtl.ca/files/lttng/".
> > 
> > Is this normal or am I doing something wrong?
> 
> Make sure to review the LTTng manual on the lttng.org
> website,
> 
> The 2.6.30 patch should work. Can you paste the whole
> sequence of:
> 
> wget...
> extract...
> and the commands you use to apply the patchset, with the
> error you get?
> 
> Thanks,
> 
> Mathieu
> 
> > TIA
> > Ajit
> > 
> > 
> >       
> > 
> > _______________________________________________
> > 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
> 


Hello Mathieu
  Thanks for the mail. 
 2.6.23 is required because the aim is to run LTTng on an uclinux enabled ARMv6 platform. Most of the patches on the lttng.org are for the mm1 branch. Once I know more about the hardware I will need to scope this out. Any thoughts ?
  I thought this patch system was just like the kernel patch system. 
So I was using:  
      cd linux_2.6.30_kernel_directory
      bzcat patch-2.6.30-lttng-0.148.tar.bz2 | patch -p1
This was failing and was the mistake.

The correct way is the  manual's way of extracting.
      bzip2 -cd patch-2.6.X-lttng-0.x.xx.tar.bz2 | tar xvof -
This creates a patch directory containing the individual patches.
      grep -v "^#" series | grep -v "^$" > series.filter
And a script then patches the linux-2.6.30 kernel with the LTTng ones in sequence.
      make xconfig
Build all LTT components statically into the kernel.( I can send you the .config if you like)
Build and install ltt-control-0.68-19062009 and lttv-0.12.17-01072009.
Reboot into new kernel.
Use debugfs by mounting
     mount -t debugfs none  /mnt/debugfs
One problem here
  lttv-gui starts the trace but does not log much. Any clues ?

Thanks
Ajit