[ltt-dev] "Kernel/LTTV event size differs for event udpv4_rcv_extended: kernel 32, LTTV 28" error when view trace

[xufeng zhang]

On 11/08/2010 09:45 AM, Benjamin Poirier wrote:
> On 05/11/10 02:24 AM, xufeng zhang wrote:
>    
>> Hi,
>> I'm using ltt-control-0.86 and lttv-0.12.31 on ARM to trace the kernel,
>> however,
>>      
> Hello,
>
> Which version of the kernel tracer patches are you using?
>    
We are using linux-kernel-2.6.34, but I can't figure out which version 
of LTTpng we are using.

Thanks,
Xufeng Zhang
> -Ben
>
>    
>> I cannot view the trace after I have successfully generated, here is the
>> error
>> when I run 'lttv-gui -t trace1' command:
>> ** Message: statistics viewer : background computation data ready.
>>
>> ** (lttv.real:6559): WARNING **: Cannot find pin_in in schedchange 671
>>
>> ** ERROR **: Kernel/LTTV event size differs for event
>> udpv4_rcv_extended: kernel 32, LTTV 28
>> aborting...
>> /usr/local/bin/lttv-gui: line 10:  6559 Aborted
>> $LTTV_CMD.real -m lttvwindow -m guievents -m guifilter -m guicontrolflow
>> -m resourceview -m guistat
>>
>>
>> And I found another people met the same problem on MIPS32, a patch have
>> also been provided for MIPS32.
>> Here is the similar code in ARM trace-clock.c:
>> linux/arch/arm/mach-omap2/trace-clock.c line 537
>> void get_trace_clock(void)
>> {
>>          spin_lock(&trace_clock_lock);
>>          if (trace_clock_refcount++)
>>                  goto end;
>>          _start_trace_clock();
>> end:
>>          spin_unlock(&trace_clock_lock);
>> }
>> EXPORT_SYMBOL_GPL(get_trace_clock);
>>
>> void put_trace_clock(void)
>> {
>>          spin_lock(&trace_clock_lock);
>>          WARN_ON(trace_clock_refcount<= 0);
>>          if (trace_clock_refcount != 1)
>>                  goto end;
>>          _stop_trace_clock();
>> end:
>>          trace_clock_refcount--;
>>          spin_unlock(&trace_clock_lock);
>> }
>> EXPORT_SYMBOL_GPL(put_trace_clock);
>>
>> Could anybody figure out what's wrong with the kernel code? Any
>> suggestion would be appreciated.
>>
>>
>> Thanks,
>> Xufeng Zhang
>>
>>
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>>      
>