Em Fri, Jul 20, 2012 at 05:25:53PM -0600, David Ahern escreveu:
> PEBS cannot be used with guest mode. If user adds :p modifier set
> exclude_guest as well.

Is this something Intel specific? Or can someone think of an arch where
this limitation wouldn't exist?
 
> 
> Signed-off-by: David Ahern <[email protected]>
> Cc: Arnaldo Carvalho de Melo <[email protected]>
> Cc: Ingo Molnar <[email protected]>
> Cc: Jiri Olsa <[email protected]>
> Cc: Namhyung Kim <[email protected]>
> Cc: Frederic Weisbecker <[email protected]>
> Cc: Peter Zijlstra <[email protected]>
> Cc: Gleb Natapov <[email protected]>
> Link: https://lkml.org/lkml/2012/7/9/264
> ---
>  tools/perf/util/parse-events.c |    3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
> index 1aa721d..f34629b 100644
> --- a/tools/perf/util/parse-events.c
> +++ b/tools/perf/util/parse-events.c
> @@ -653,6 +653,9 @@ int parse_events_modifier(struct list_head *list, char 
> *str)
>                       eH = 0;
>               } else if (*str == 'p') {
>                       precise++;
> +                     /* use of precise requires exclude_guest */
> +                     if (!exclude_GH)
> +                             eG = 1;
>               } else
>                       break;
>  
> -- 
> 1.7.10.1
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