linux-kernel - Re: [PATCH] perf annotate-data: Support --skip-empty option

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Message-ID: <Zrbpe8jeTXFnc041@google.com>
Date: Fri, 9 Aug 2024 21:15:55 -0700
From: Namhyung Kim <namhyung@...nel.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: Ian Rogers <irogers@...gle.com>, Kan Liang <kan.liang@...ux.intel.com>,
	Jiri Olsa <jolsa@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>, LKML <linux-kernel@...r.kernel.org>,
	linux-perf-users@...r.kernel.org
Subject: Re: [PATCH] perf annotate-data: Support --skip-empty option

On Fri, Aug 09, 2024 at 06:33:09PM -0300, Arnaldo Carvalho de Melo wrote:
> On Tue, Aug 06, 2024 at 11:17:13PM -0700, Namhyung Kim wrote:
> > The --skip-empty option is to hide dummy events in a group.  Like other
> > output mode like perf report and perf annotate, the data-type profiling
> > output should support the option.
> 
> Thanks, tested and applied.

Thanks, but I found a bug when a member has multiple histogram entries.
Could you please fold this?  Or I can send a format patch if you want.

Thanks,
Namhyung


diff --git a/tools/perf/ui/browsers/annotate-data.c b/tools/perf/ui/browsers/annotate-data.c
index c3db80a7589a..a937b55da736 100644
--- a/tools/perf/ui/browsers/annotate-data.c
+++ b/tools/perf/ui/browsers/annotate-data.c
@@ -46,11 +46,12 @@ static int get_member_overhead(struct annotated_data_type *adt,
 	struct annotated_member *member = entry->data;
 	int i, k;
 
-	for (i = 0, k = 0; i < member->size; i++) {
+	for (i = 0; i < member->size; i++) {
 		struct type_hist *h;
 		struct evsel *evsel;
 		int offset = member->offset + i;
 
+		k = 0;
 		for_each_group_evsel(evsel, leader) {
 			if (symbol_conf.skip_empty &&
 			    evsel__hists(evsel)->stats.nr_samples == 0)