Re: [discuss] Re: 2.6.19-rc5: known regressions (v3)

[Andi Kleen]

> OProfile has a simplistic view of the performance monitoring hardware. The 
> routines in libop/op_alloc_counter.c determine what set of performance registers 
> is available from the processor in use. There is no check to see what registers 
> are actually available in the /dev/oprofile directory.
> 
> opcontrol executes ophelp to determine which specific counters to count which 
> events. The function map_event_to_counter() in libop/op_alloc_counter.c does the 
> actual selection. It seems what is needed is for map_event_to_counter() to check 
> to see which counters are available and mark the others as unavailable

Thanks for the explanation. Can you please fix it and release a new version? 
Documentation/Changes could be adapted then.

-Andi

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