lkml.org 
[lkml]   [2006]   [Nov]   [15]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
FromAndi Kleen <>
SubjectRe: [discuss] Re: 2.6.19-rc5: known regressions (v3)
DateWed, 15 Nov 2006 17:48:05 +0100
> 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

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-11-15 17:51    [from the cache]
©2003-2008