On Tue, Feb 09, 2016 at 11:37:10PM +0100, Jiri Olsa wrote:
> On Fri, Feb 05, 2016 at 10:01:55PM +0900, Namhyung Kim wrote:
> > Support hierarchy output for perf-top using --hierarchy option.
> > 
> > Acked-by: Pekka Enberg <[email protected]>
> > Signed-off-by: Namhyung Kim <[email protected]>
> > ---
> >  tools/perf/Documentation/perf-top.txt |  3 +++
> >  tools/perf/builtin-top.c              | 15 +++++++++++++++
> >  2 files changed, 18 insertions(+)
> > 
> > diff --git a/tools/perf/Documentation/perf-top.txt 
> > b/tools/perf/Documentation/perf-top.txt
> > index b0e60e17db38..19f046f027cd 100644
> > --- a/tools/perf/Documentation/perf-top.txt
> > +++ b/tools/perf/Documentation/perf-top.txt
> > @@ -233,6 +233,9 @@ Default is to monitor all CPUS.
> >  --raw-trace::
> >     When displaying traceevent output, do not use print fmt or plugins.
> >  
> > +--hierarchy::
> > +   Enable hierarchy output.
> > +
> >  INTERACTIVE PROMPTING KEYS
> >  --------------------------
> >  
> > diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
> > index a75de3940b97..b86b623e8799 100644
> > --- a/tools/perf/builtin-top.c
> > +++ b/tools/perf/builtin-top.c
> > @@ -1214,6 +1214,8 @@ int cmd_top(int argc, const char **argv, const char 
> > *prefix __maybe_unused)
> >                  parse_branch_stack),
> >     OPT_BOOLEAN(0, "raw-trace", &symbol_conf.raw_trace,
> >                 "Show raw trace event output (do not use print fmt or 
> > plugins)"),
> > +   OPT_BOOLEAN(0, "hierarchy", &symbol_conf.report_hierarchy,
> > +               "Show entries in a hierarchy"),
> >     OPT_END()
> >     };
> >     const char * const top_usage[] = {
> > @@ -1241,6 +1243,19 @@ int cmd_top(int argc, const char **argv, const char 
> > *prefix __maybe_unused)
> >             goto out_delete_evlist;
> >     }
> >  
> > +   if (symbol_conf.report_hierarchy) {
> > +           /* disable incompatible options */
> > +           symbol_conf.event_group = false;
> > +           symbol_conf.cumulate_callchain = false;
> > +
> > +           if (field_order) {
> > +                   pr_err("Error: --hierarchy and --fields options cannot 
> > be used together\n");
> > +                   parse_options_usage(top_usage, options, "fields", 0);
> > +                   parse_options_usage(NULL, options, "hierarchy", 0);
> > +                   goto out_delete_evlist;
> > +           }
> > +   }
> 
> I was wondering about this when I was going through the patchset ;-)

but isn't that too restricting? hows about fields like
overhead_sys/us, samples, period 

jirka

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