[ltt-dev] LTTng on arm target and LTTv on x86 host

[Mathieu Desnoyers]

* Gaurav Singh (gausinghnsit at gmail.com) wrote:
> Hi,
> I am trying to view the details of a trace obtained on ARM target on
> x86 host. I compile 2.6.24 kernel with LTTng patches and also compile
> LTT control package for arm. After running LTT control pack in normal
> mode
> 
> ltt-armall
> lttctl -n trace -d -l /mnt/debugfs/ltt -t /tmp/trace'
> some ops
> lttctl -n trace -R
> 
> I got a trace in /tmp/trace directory
> 
> Compiled lttv-gui for x86 server running linux and ran-
> 
> lttv-gui
> 
> selected the trace folder and got the following msgs-
> 
> ** (lttv.real:31254): WARNING **: No marker of name
> kernel_arch_syscall_entry found
> 
> (lttv.real:31254): GLib-CRITICAL **: g_array_remove_range: assertion
> `index_ < array->len' failed
> 
> ** (lttv.real:31254): WARNING **: No marker of name kernel_arch_trap_entry found
> /home/gaurav/install/bin/lttv-gui: line 10: 31254 Segmentation fault
>    $LTTV_CMD.real -m guievents -m guifilter -m guicontrolflow -m
> resourceview -m guistatistics -m guitracecontrol $*
> 
> 
> Qus.1. Am I following the correct procedure - cn I view target traces on host
> 2. I am compiling LTT contol and LTT viewer on same machines buyt
> kernel on another - is that a prb?
> 3. What can be the reason for this error
> 

A few questions :

what lttng, ltt-control, lttv versions do you use ?
did you follow the compatibility list on the website ?

Can you show me the output of

cat /proc/ltt

on the ARM target ?

Thanks,

Mathieu


> Regards
> Gaurav
> 
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-- 
Mathieu Desnoyers
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