linux-kernel - Re: [PATCH 27/35] perf tools: Add perf_event__is

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Date:   Wed, 20 Jul 2022 11:06:08 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ian Rogers <irogers@...gle.com>
Cc:     Adrian Hunter <adrian.hunter@...el.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Andi Kleen <ak@...ux.intel.com>, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org
Subject: Re: [PATCH 27/35] perf tools: Add perf_event__is_guest()

Em Tue, Jul 19, 2022 at 06:11:47PM -0700, Ian Rogers escreveu:
> On Mon, Jul 11, 2022 at 2:33 AM Adrian Hunter <adrian.hunter@...el.com> wrote:
> >
> > Add a helper function to determine if an event is a guest event.
> >
> > Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
> > ---
> >  tools/perf/util/event.h | 21 +++++++++++++++++++++
> >  1 file changed, 21 insertions(+)
> >
> > diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
> > index a660f304f83c..a7b0931d5137 100644
> > --- a/tools/perf/util/event.h
> > +++ b/tools/perf/util/event.h
> 
> Would this be better under tools/lib/perf ?

In general I think we should move things to libperf when a user requests
it, i.e. it'll be needed in a tool that uses libperf.

- Arnaldo
 
> Thanks,
> Ian
> 
> > @@ -484,4 +484,25 @@ void arch_perf_synthesize_sample_weight(const struct perf_sample *data, __u64 *a
> >  const char *arch_perf_header_entry(const char *se_header);
> >  int arch_support_sort_key(const char *sort_key);
> >
> > +static inline bool perf_event_header__cpumode_is_guest(u8 cpumode)
> > +{
> > +       return cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
> > +              cpumode == PERF_RECORD_MISC_GUEST_USER;
> > +}
> > +
> > +static inline bool perf_event_header__misc_is_guest(u16 misc)
> > +{
> > +       return perf_event_header__cpumode_is_guest(misc & PERF_RECORD_MISC_CPUMODE_MASK);
> > +}
> > +
> > +static inline bool perf_event_header__is_guest(const struct perf_event_header *header)
> > +{
> > +       return perf_event_header__misc_is_guest(header->misc);
> > +}
> > +
> > +static inline bool perf_event__is_guest(const union perf_event *event)
> > +{
> > +       return perf_event_header__is_guest(&event->header);
> > +}
> > +
> >  #endif /* __PERF_RECORD_H */
> > --
> > 2.25.1
> >

-- 

- Arnaldo