The dummy tracking event is only for tracking task/comom/mmap events
and has no sample data for itself.  So no need to report, just skip it.

Signed-off-by: Namhyung Kim <namhy...@kernel.org>
---
 tools/perf/builtin-report.c    |  3 +++
 tools/perf/ui/browsers/hists.c | 30 ++++++++++++++++++++++++------
 tools/perf/ui/gtk/hists.c      |  3 +++
 3 files changed, 30 insertions(+), 6 deletions(-)

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 92fca2157e5e..fee770935eab 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -323,6 +323,9 @@ static int perf_evlist__tty_browse_hists(struct perf_evlist 
*evlist,
                struct hists *hists = evsel__hists(pos);
                const char *evname = perf_evsel__name(pos);
 
+               if (perf_evsel__is_dummy_tracking(pos))
+                       continue;
+
                if (symbol_conf.event_group &&
                    !perf_evsel__is_group_leader(pos))
                        continue;
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index f981cb8f0158..2cc18b693950 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -2128,14 +2128,17 @@ static int perf_evsel_menu__run(struct perf_evsel_menu 
*menu,
        return key;
 }
 
-static bool filter_group_entries(struct ui_browser *browser __maybe_unused,
-                                void *entry)
+static bool filter_entries(struct ui_browser *browser __maybe_unused,
+                          void *entry)
 {
        struct perf_evsel *evsel = list_entry(entry, struct perf_evsel, node);
 
        if (symbol_conf.event_group && !perf_evsel__is_group_leader(evsel))
                return true;
 
+       if (perf_evsel__is_dummy_tracking(evsel))
+               return true;
+
        return false;
 }
 
@@ -2152,7 +2155,7 @@ static int __perf_evlist__tui_browse_hists(struct 
perf_evlist *evlist,
                        .refresh    = ui_browser__list_head_refresh,
                        .seek       = ui_browser__list_head_seek,
                        .write      = perf_evsel_menu__write,
-                       .filter     = filter_group_entries,
+                       .filter     = filter_entries,
                        .nr_entries = nr_entries,
                        .priv       = evlist,
                },
@@ -2179,21 +2182,22 @@ int perf_evlist__tui_browse_hists(struct perf_evlist 
*evlist, const char *help,
                                  struct perf_session_env *env)
 {
        int nr_entries = evlist->nr_entries;
+       struct perf_evsel *first = perf_evlist__first(evlist);
+       struct perf_evsel *pos;
 
 single_entry:
        if (nr_entries == 1) {
-               struct perf_evsel *first = perf_evlist__first(evlist);
-
                return perf_evsel__hists_browse(first, nr_entries, help,
                                                false, hbt, min_pcnt,
                                                env);
        }
 
        if (symbol_conf.event_group) {
-               struct perf_evsel *pos;
 
                nr_entries = 0;
                evlist__for_each(evlist, pos) {
+                       if (perf_evsel__is_dummy_tracking(pos))
+                               continue;
                        if (perf_evsel__is_group_leader(pos))
                                nr_entries++;
                }
@@ -2202,6 +2206,20 @@ int perf_evlist__tui_browse_hists(struct perf_evlist 
*evlist, const char *help,
                        goto single_entry;
        }
 
+       evlist__for_each(evlist, pos) {
+               if (perf_evsel__is_dummy_tracking(pos))
+                       nr_entries--;
+       }
+
+       if (nr_entries == 1) {
+               evlist__for_each(evlist, pos) {
+                       if (!perf_evsel__is_dummy_tracking(pos)) {
+                               first = pos;
+                               goto single_entry;
+                       }
+               }
+       }
+
        return __perf_evlist__tui_browse_hists(evlist, nr_entries, help,
                                               hbt, min_pcnt, env);
 }
diff --git a/tools/perf/ui/gtk/hists.c b/tools/perf/ui/gtk/hists.c
index 4b3585eed1e8..83a7ecd5cda8 100644
--- a/tools/perf/ui/gtk/hists.c
+++ b/tools/perf/ui/gtk/hists.c
@@ -317,6 +317,9 @@ int perf_evlist__gtk_browse_hists(struct perf_evlist 
*evlist,
                char buf[512];
                size_t size = sizeof(buf);
 
+               if (perf_evsel__is_dummy_tracking(pos))
+                       continue;
+
                if (symbol_conf.event_group) {
                        if (!perf_evsel__is_group_leader(pos))
                                continue;
-- 
2.4.0

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