Hi,
I'm using ltt-control-0.86 and lttv-0.12.31 on ARM to trace the kernel,
however,
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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