Re: [PATCH 3/3] perf, tools: Add support for guest/host-only profiling

["Roedel, Joerg" <Joerg.Roedel@amd.com>]

On Tue, May 10, 2011 at 10:50:08AM -0400, Peter Zijlstra wrote:
> On Tue, 2011-05-10 at 16:35 +0200, Joerg Roedel wrote:
> > @@ -740,6 +740,12 @@ parse_event_modifier(const char **strp, struct perf_event_attr *attr)
> >                         if (!exclude)
> >                                 exclude = eu = ek = eh = 1;
> >                         eh = 0;
> > +               } else if (*str == 'G') {
> > +                       eg   = 0;
> > +                       ehst = 1;
> > +               } else if (*str == 'H') {
> > +                       eg   = 1;
> > +                       ehst = 0; 
> 
> This doesn't match the existing exclude logic, also eH and eG come to
> mind.

OK, eH and eG seems like a better choice. Regarding the logic I
explictly decided to do it this way. The reason is that guest/host
counting is orthogonal to user/kernel/hv counting. You can decide to
only count guest-kernel for example. And if a user just specifies
-e cycles:G this would automatically exlucde user and kernel counting.
This didn't make sense to me so I decided to keep the logic seperate for
guest/host exclusions.

	Joerg