From: Andrew M. <ak...@os...> - 2006-11-15 18:39:31
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On Wed, 15 Nov 2006 17:48:05 +0100 Andi Kleen <ak...@su...> wrote: > > > 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. > Meanwhile we should restore the NMI counter to fix this bug. |