[PATCH] powerpc/mm: Add trace point for tracking hash pte fault
Anton Blanchard
anton at samba.org
Mon Feb 2 21:26:07 AEDT 2015
Hi,
> > ebizzy with -S 30 -t 1 -P gave
> > 13627 records/s -> Without patch
> > 13546 records/s -> With patch with tracepoint disabled
>
> OK. So that's about -0.6%. Are we happy with that? I'm not sure.
>
> Can you do a few more runs and see if that's a stable result.
Surprisingly large. Is CONFIG_JUMP_LABEL enabled? That should reduce the
tracepoint to just a nop.
Anton
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