On Wed, Jul 05, 2017 at 11:35:52AM +0800, changbin...@intel.com wrote: > From: Changbin Du <changbin...@intel.com> > > If we always insert 'overhead' and 'overhead_children' as sort keys, > this make it impossible to sort as overhead (which displayed as Self) > first.Ths will be a problem if the data is collected with call-graph > enabled. Then we never can sort the result as self-overhead on this > data. And sometimes the data is hard to collect. > > > perf record -ag > > perf report -s overhead,sym > > Samples: 7K of event 'cycles', Event count (approx.): 865138253 > Children Self Symbol > + 26.41% 0.00% [k] verify_cpu > + 26.37% 0.04% [k] cpu_startup_entry > + 25.93% 0.27% [k] do_idle > + 19.88% 0.00% [k] start_secondary > .... > > I intend to sort as 'Self', but actually it sort as 'Children'. > > This patch fix this by only insert overhead && overhead_children > when no overhead* field given. > > Signed-off-by: Changbin Du <changbin...@intel.com>
Acked-by: Jiri Olsa <jo...@kernel.org> thanks, jirka > --- > v3: Add comment in code from Jiri > v2: Add the example in commit message. > > --- > tools/perf/util/sort.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c > index 8b327c9..9e087fb 100644 > --- a/tools/perf/util/sort.c > +++ b/tools/perf/util/sort.c > @@ -2635,6 +2635,13 @@ static char *setup_overhead(char *keys) > if (sort__mode == SORT_MODE__DIFF) > return keys; > > + /** > + * User already stated overhead within -s option, > + * do not mangle with that. > + */ > + if (strstr(keys, "overhead")) > + return keys; > + > keys = prefix_if_not_in("overhead", keys); > > if (symbol_conf.cumulate_callchain) > -- > 2.7.4 >