Jan Kiszka wrote: > Let us get the tracer right. > ... And here is the issue already when having a second look:
> / # cat /proc/ipipe/trace/frozen
> I-pipe frozen back-tracing service on 2.6.19.2/ipipe-1.6-04
> ------------------------------------------------------------
> Freeze: 9187269471 cycles, Trace Points: 30 (+10)
> Calibrated minimum trace-point overhead: 3.000 us
>
> +----- Hard IRQs ('|': locked)
> |+---- <unused>
> ||+--- Xenomai
> |||+-- IShield
> ||||+- Linux ('*': domain stalled, '+': current, '#': current+stalled)
> ||||| +---------- Delay flag ('+': > 1 us, '!': > 10
> us)
> ||||| | +- NMI noise ('N')
> ||||| | |
> Type User Val. Time Delay Function (Parent)
> :| # begin 0x80000001 -190+ 4.250N __ipipe_mach_get_tsc+0x48
> (xntimer_do_tick_aperiodic+0x40)
__ipipe_mach_get_tsc() must never pop up in trace, it has to be marked
"notrace". I guess you ported that service for your board? Please fix
and retry the test.
Jan
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