7 files changed, 20 insertions, 8 deletions

diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 17c6b494e8cc..6c5ae57831f6 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -247,7 +247,7 @@ static int __cmd_annotate(struct perf_annotate *ann)
 
                 if (nr_samples > 0) {
                         total_nr_samples += nr_samples;
-                        hists__collapse_resort(hists);
+                        hists__collapse_resort(hists, NULL);
                         hists__output_resort(hists);
 
                         if (symbol_conf.event_group &&
diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 9c828881714c..b605009e803f 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -369,7 +369,7 @@ static void perf_evlist__collapse_resort(struct perf_evlist *evlist)
         list_for_each_entry(evsel, &evlist->entries, node) {
                 struct hists *hists = &evsel->hists;
 
-                hists__collapse_resort(hists);
+                hists__collapse_resort(hists, NULL);
         }
 }
 
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index e3598a456017..98d3891392e2 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -496,6 +496,7 @@ static int __cmd_report(struct perf_report *rep)
         struct map *kernel_map;
         struct kmap *kernel_kmap;
         const char *help = "For a higher level overview, try: perf report --sort comm,dso";
+        struct ui_progress prog;
         struct perf_data_file *file = session->file;
 
         signal(SIGINT, sig_handler);
@@ -558,13 +559,19 @@ static int __cmd_report(struct perf_report *rep)
         }
 
         nr_samples = 0;
+        list_for_each_entry(pos, &session->evlist->entries, node)
+                nr_samples += pos->hists.nr_entries;
+
+        ui_progress__init(&prog, nr_samples, "Merging related events...");
+
+        nr_samples = 0;
         list_for_each_entry(pos, &session->evlist->entries, node) {
                 struct hists *hists = &pos->hists;
 
                 if (pos->idx == 0)
                         hists->symbol_filter_str = rep->symbol_filter_str;
 
-                hists__collapse_resort(hists);
+                hists__collapse_resort(hists, &prog);
                 nr_samples += hists->stats.nr_events[PERF_RECORD_SAMPLE];
 
                 /* Non-group events are considered as leader */
@@ -576,6 +583,7 @@ static int __cmd_report(struct perf_report *rep)
                         hists__link(leader_hists, hists);
                 }
         }
+        ui_progress__finish();
 
         if (session_done())
                 return 0;
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 386d83324a8d..76c9264ed070 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -286,7 +286,7 @@ static void perf_top__print_sym_table(struct perf_top *top)
                 return;
         }
 
-        hists__collapse_resort(&top->sym_evsel->hists);
+        hists__collapse_resort(&top->sym_evsel->hists, NULL);
         hists__output_resort(&top->sym_evsel->hists);
         hists__decay_entries(&top->sym_evsel->hists,
                              top->hide_user_symbols,
@@ -552,7 +552,7 @@ static void perf_top__sort_new_samples(void *arg)
         if (t->evlist->selected != NULL)
                 t->sym_evsel = t->evlist->selected;
 
-        hists__collapse_resort(&t->sym_evsel->hists);
+        hists__collapse_resort(&t->sym_evsel->hists, NULL);
         hists__output_resort(&t->sym_evsel->hists);
         hists__decay_entries(&t->sym_evsel->hists,
                              t->hide_user_symbols,
diff --git a/tools/perf/tests/hists_link.c b/tools/perf/tests/hists_link.c
index 025503a22ff7..b51abcb2c243 100644
--- a/tools/perf/tests/hists_link.c
+++ b/tools/perf/tests/hists_link.c
@@ -467,7 +467,7 @@ int test__hists_link(void)
                 goto out;
 
         list_for_each_entry(evsel, &evlist->entries, node) {
-                hists__collapse_resort(&evsel->hists);
+                hists__collapse_resort(&evsel->hists, NULL);
 
                 if (verbose > 2)
                         print_hists(&evsel->hists);
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index f0b863ef4896..7e80253074b0 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -399,6 +399,7 @@ static struct hist_entry *add_hist_entry(struct hists *hists,
         if (!he)
                 return NULL;
 
+        hists->nr_entries++;
         rb_link_node(&he->rb_node_in, parent, p);
         rb_insert_color(&he->rb_node_in, hists->entries_in);
 out:
@@ -604,7 +605,7 @@ static void hists__apply_filters(struct hists *hists, struct hist_entry *he)
         hists__filter_entry_by_symbol(hists, he);
 }
 
-void hists__collapse_resort(struct hists *hists)
+void hists__collapse_resort(struct hists *hists, struct ui_progress *prog)
 {
         struct rb_root *root;
         struct rb_node *next;
@@ -631,6 +632,8 @@ void hists__collapse_resort(struct hists *hists)
                          */
                         hists__apply_filters(hists, n);
                 }
+                if (prog)
+                        ui_progress__update(prog, 1);
         }
 }
 
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 20b175808cd3..0c7ce8bb8eba 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -5,6 +5,7 @@
 #include <pthread.h>
 #include "callchain.h"
 #include "header.h"
+#include "ui/progress.h"
 
 extern struct callchain_param callchain_param;
 
@@ -108,7 +109,7 @@ struct hist_entry *__hists__add_mem_entry(struct hists *self,
                                           u64 weight);
 
 void hists__output_resort(struct hists *self);
-void hists__collapse_resort(struct hists *self);
+void hists__collapse_resort(struct hists *self, struct ui_progress *prog);
 
 void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel);
 void hists__output_recalc_col_len(struct hists *hists, int max_rows);