On Wed, Feb 10, 2016 at 02:19:40PM +0100, Jiri Olsa wrote:
> 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 <penb...@kernel.org>
> > > Signed-off-by: Namhyung Kim <namhy...@kernel.org>
> > > ---
> > > 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
Allowing -F/--fields option cannot ensure the hierarchy mode working
correctly. Those fields can be shown with following options anyway..
-n, --show-nr-samples
Show a column with the number of samples
--show-cpu-utilization
Show sample percentage for different cpu modes
--show-total-period
Show a column with the sum of periods
Thanks,
Namhyung
